SCB-1548 import oas-validator
diff --git a/oas-validator/.gitignore b/oas-validator/.gitignore
new file mode 100755
index 0000000..a8d4d48
--- /dev/null
+++ b/oas-validator/.gitignore
@@ -0,0 +1,32 @@
+HELP.md
+/target/
+!.mvn/wrapper/maven-wrapper.jar
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+/build/
+
+### VS Code ###
+.vscode/
+
+*/target
+*.class
\ No newline at end of file
diff --git a/oas-validator/.mvn/wrapper/maven-wrapper.jar b/oas-validator/.mvn/wrapper/maven-wrapper.jar
new file mode 100755
index 0000000..f775b1c
--- /dev/null
+++ b/oas-validator/.mvn/wrapper/maven-wrapper.jar
Binary files differ
diff --git a/oas-validator/.mvn/wrapper/maven-wrapper.properties b/oas-validator/.mvn/wrapper/maven-wrapper.properties
new file mode 100755
index 0000000..eb91947
--- /dev/null
+++ b/oas-validator/.mvn/wrapper/maven-wrapper.properties
@@ -0,0 +1 @@
+distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.3.3/apache-maven-3.3.3-bin.zip
\ No newline at end of file
diff --git a/oas-validator/Jenkinsfile b/oas-validator/Jenkinsfile
new file mode 100755
index 0000000..ea54d66
--- /dev/null
+++ b/oas-validator/Jenkinsfile
@@ -0,0 +1,61 @@
+pipeline {
+  agent any
+
+  triggers {
+    // 每30分钟检查一下GIT仓库
+    pollSCM '*/30 * * * *'
+  }
+
+  options {
+    // 禁止因Multibranch pipeline index动作触发构建
+    overrideIndexTriggers false
+    // 禁止并发构建
+    disableConcurrentBuilds()
+    // 构建结果保留天数10天,最多保留10个
+    buildDiscarder logRotator(daysToKeepStr: '30', numToKeepStr: '10')
+    // 控制台打出时间戳
+    // timestamps()
+    // 构建超时设置:15分钟
+    timeout(30)
+  }
+
+  stages {
+
+    stage('Build & Test') {
+
+      steps {
+        withMaven(
+          // Jenkins全局工具设置的Maven的名字
+          maven: 'Maven3',
+          // Jenkins全局工具设置的JDK的名字,有JDK6,JDK7,JDK8可选
+          jdk: 'JDK8',
+          // 指定maven本地仓库路径为项目working dir下的.local-m2-reop,可以避免因并发构建导致本地仓库混乱的问题
+          mavenLocalRepo: '.local-m2-repo'
+        ) {
+          sh 'mvn -f ./ clean install'
+        }
+      }
+
+    }
+
+
+  }
+
+  post {
+    always {
+      // 发送邮件到本次change所包含的committer
+      emailext recipientProviders: [developers()],
+        subject: "Pipeline [${currentBuild.fullDisplayName}] built ${currentBuild.currentResult}",
+        body: "More details: ${currentBuild.absoluteUrl}"
+
+    }
+    cleanup {
+      // 清空workspace,节省Jenkins服务器磁盘空间
+      echo 'Cleanup workspace'
+      withMaven(maven: 'Maven3', jdk: 'JDK8', mavenLocalRepo: '.local-m2-repo', publisherStrategy: 'EXPLICIT') {
+        sh 'mvn -f ./ clean'
+      }
+
+    }
+  }
+}
diff --git a/oas-validator/LICENSE b/oas-validator/LICENSE
new file mode 100755
index 0000000..261eeb9
--- /dev/null
+++ b/oas-validator/LICENSE
@@ -0,0 +1,201 @@
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+
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diff --git a/oas-validator/README.md b/oas-validator/README.md
new file mode 100755
index 0000000..c9b5e07
--- /dev/null
+++ b/oas-validator/README.md
@@ -0,0 +1,447 @@
+# OAS Validator
+
+OpenAPI V3 Spec校验工具。
+
+[TOC]
+
+## 项目结构
+
+* oas-validator-core,核心API及骨架实现
+* oas-validator-core-spring,骨架的Spring Boot Autoconfiguration
+* oas-validator-test,核心API的测试帮助类
+* oas-validator-compliance,合规性校验实现
+* oas-validator-compliance-spring,合规性校验的Spring Boot Autoconfiguration
+* oas-validator-compatibility,兼容性校验实现
+* oas-validator-compatibility-spring,兼容性校验实现的Spring Boot Autoconfiguration
+* oas-validator-web,校验工具的操作UI
+
+
+
+## 校验工具安装
+
+[安装文档](./doc/INSTALLATION.MD)
+
+
+
+## 校验工具使用
+
+[使用文档](./doc/USAGE.MD)
+
+
+
+## 合规性校验
+
+OAS必须符合[OAS 3.0.2规范][openapi-3.0.2](比如属性的名称、REQUIED要求)。除此之外则是我们自己的定义的合规性检查。
+
+### 一些字符串匹配规则
+
+* <a name="lower-camel-case"></a>Lower Camel Case:首字母小写的驼峰,对应的正则`^[a-z]+((\d)|([A-Z0-9][a-z0-9]+))*([A-Z])?$`
+* <a name="upper-camel-case"></a>Upper Camel Case:首字母大写的驼峰,对应的正则`^[A-Z]([a-z0-9]+[A-Z]?)*$`
+* <a name="upper-hyphen-case"></a>Upper Hyphen Case:单词首字母大写,多个单词用`-`连接,比如`Content-Type`、`Accept`、`X-Rate-Limit-Limit`。对应的正则:`^([A-Z][a-z0-9]*-)*([A-Z][a-z0-9]*)$`
+
+### OpenAPI Object [doc][spec-openapi]
+
+<a name="openapi-compliance"></a>
+
+* `openapi`属性必须为3.0.x且>=3.0.2
+* `info`属性见[Info Object合规性检查](#info-compliance)
+* `paths`属性,必须提供见[Paths Object合规性检查](#paths-compliance)
+* `components`属性见[Components Object合规性检查](#components-compliance)
+* `tags`属性,至少提供一个[Tag Object][spec-tag]
+  * 见[Tag Object合规性检查](#tag-compliance)
+* `security`属性,不允许提供
+
+### Info Object [doc][spec-info]
+
+<a name="info-compliance"></a>
+
+* `description`属性,必须填写
+
+### Tag Object [doc][spec-tag]
+
+<a name="tag-compliance"></a>
+
+- `name`属性,必须是[Upper Camel Case](#upper-camel-case)
+- `description`属性,必须填写
+- 不得存在[Operation Object][spec-operation]没有引用过的tag
+
+### Paths Object [doc][spec-paths]
+
+<a name="paths-compliance"></a>
+
+* path必须是[Lower Camel Case](#lower-camel-case),包括[Path Templating][spec-path-templating]中的变量
+  * 见[Path Item Object合规性检查](#path-item-compliance)
+
+### Path Item Object [doc][spec-path-item]
+
+<a name="path-item-compliance"></a>
+
+* `get/post/put/delete/...`属性,见[Operation Object合规性检查](operation-compliance)
+* `parameters`属性,见[Parameter Object合规性检查](#parameter-compliance)
+
+### Operation Object [doc][spec-operation]
+
+<a name="operation-compliance"></a>
+
+* `summary`属性、必须填写
+* `operationId`属性,且[Lower Camel Case](#lower-camel-case)
+* `parameters`属性,见[Parameter Object合规性检查](#parameter-compliance)
+* `requestBody`属性,见[Request Body Object合规性检查](#request-body-compliance)
+* `responses`属性,见[Responses Object合规性检查](#responses-compliance)
+* `tags`属性,且只能写一个tag,且必须在[OpenAPI Object][spec-openapi] 的 `tags`属性里所定义的范围内
+  
+* `servers`属性,不允许提供
+
+### Parameter Object [doc][spec-parameter]
+
+<a name="parameter-compliance"></a>
+
+* `description`属性,必须填写
+* `name`属性
+  * 如果`in`为path、query、cookie,则那么必须是[Lower Camel Case](#lower-camel-case)
+  * 如果`in`为header,则那么必须是[Upper Hyphen Case](#upper-hyphen-case)
+* `schema`属性,见[Schema Object合规性检查](#schema-compliance)
+* `content`属性,见[Media Type Object合规性检查](#media-type-compliance)
+
+### Request Body Object [doc][spec-request-body]
+
+<a name="request-body-compliance"></a>
+
+* `description`属性,必须填写
+* `content`属性,见[Media Type Object合规性检查](#media-type-compliance)
+
+### Media Type Object [doc][spec-media-type]
+
+<a name="media-type-compliance"></a>
+
+* `schema`属性,必须填写。见[Schema Object合规性检查](#schema-compliance)
+* `encoding`属性,见[Encoding Object合规性检查](#encoding-compliance)
+
+### Responses Object [doc][spec-responses]
+
+<a name="responses-compliance"></a>
+
+* 见[Response Object合规性检查](#response-compliance)
+
+### Response Object [doc][spec-response]
+
+<a name="response-compliance"></a>
+
+* `description`属性,必须填写
+* `headers`属性,name(`headers`的key)必须是[Upper Hyphen Case](#upper-hyphen-case)
+  * 见[Header Object合规性检查](#header-compliance)
+* `content`属性,见[Media Type Object合规性检查](#media-type-compliance)
+
+### Schema Object [doc][spec-schema]
+
+<a name="schema-compliance"></a>
+
+* `title`属性,如果上级是[Schema Object][spec-schema]或[Components Object][spec-components],那么必须填写
+* `properties`属性,name(`properties`的key)必须是[Lower Camel Case](#lower-camel-case)
+  * Sub Schema见[Schema Object合规性检查](#schema-compliance)
+
+### Encoding Object [doc][spec-encoding]
+
+<a name="encoding-compliance"></a>
+
+* `headers`属性,name(`headers`的key)必须是[Upper Hyphen Case](#upper-hyphen-case)
+  * 见[Header Object合规性检查](#header-compliance)
+
+### Header Object [doc][spec-header]
+
+<a name="header-compliance"></a>
+
+* `description`属性,必须填写
+* `schema`属性,见[Schema Object合规性检查](#schema-compliance)
+* `content`属性,见[Media Type Object合规性检查](#media-type-compliance)
+
+### Components Object [doc][spec-components]
+
+<a name="components-compliance"></a>
+
+* `schemas`属性,name必须是[Upper Camel Case](#upper-camel-case)
+  * 见[Schema Object合规性检查](#schema-compliance)
+* `responses`属性,name必须是[Upper Camel Case](#upper-camel-case)
+  * 见[Response Object合规性检查](#response-compliance)
+* `parameters`属性,name必须是[Upper Camel Case](#upper-camel-case)
+  * 见[Parameter Object合规性检查](#parameter-compliance)
+* `examples`属性,name必须是[Upper Camel Case](#upper-camel-case)
+* `requestBodies`属性,name必须是[Upper Camel Case](#upper-camel-case)
+  * 见[Request Body合规性检查](#request-body-compliance)
+* `headers`属性,name必须是[Upper Hyphen Case](#upper-hyphen-case)
+  * 见[Header合规性检查](#header-compliance)
+* `links`属性,name必须是[Upper Camel Case](#upper-camel-case)
+* `callbacks`属性,name必须是[Upper Camel Case](#upper-camel-case)
+
+## 兼容性检查
+
+对新旧两个版本的OAS做兼容性检查。
+
+OAS可以使用[Reference Object][spec-reference]来描述Spec,两个不同的OAS会出现描述不同但语义相同的情况。比如下面的旧OAS没有使用[Reference Object][spec-reference],而新OAS则使用了的情况:
+
+旧OAS
+
+```yaml
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    post:
+      summary: List all pets
+      operationId: listPets
+      requestBody:
+        content:
+          application/json:
+            schema:
+              type: array
+              items:
+                type: object
+                properties:
+                  Foo:
+                    type: string
+      responses:
+        '200':
+          description: A paged array of pets
+```
+
+新OAS
+
+```yaml
+paths:
+  /pets:
+    post:
+      operationId: listPets
+      requestBody:
+        content:
+          application/json: 
+            schema:
+              $ref: '#/components/schemas/Foo'
+      responses:
+        '200':
+          description: A paged array of pets
+components:
+  schemas:
+    Foo:
+      type: array
+      items:
+        type: object
+        properties:
+          Foo:
+            type: string
+```
+
+因此在检查兼容性的时候会将新旧OAS的[Reference Object][spec-reference]做解析,然后再检查,下面是一段[swagger-parser][swagger-parser]的例子:
+
+```java
+OpenAPIV3Parser parser = new OpenAPIV3Parser();
+
+ParseOptions parseOptions = new ParseOptions();
+parseOptions.setResolve(true);
+parseOptions.setResolveCombinators(true);
+parseOptions.setResolveFully(true);
+parseOptions.setFlatten(false);
+
+SwaggerParseResult parseResult = parser.readContents(content, null, parseOptions);
+```
+
+因此,检查下来如果发现不兼容,那么所报告的位置会和原文档有所不同。
+
+### Paths Object [doc][spec-paths]
+
+<a name="paths-compatibility"></a>
+
+* 新OAS必须包含旧OAS的所有的`path`,如果`path`使用了[Path Templating][spec-path-templating],只要变量名发生了变化,那么即使语义上相同也会被认为不同,比如`/pets/{foo}`和`/pets/{bar}`会被认定为不同。
+  * 见[Path Item Object兼容性检查](#path-item-compatibility)
+
+### Path Item Object [doc][spec-path-item]
+
+<a name="path-item-compatibility"></a>
+
+* 新OAS必须包含旧OAS的所有的get/put/post/delete/...[Operation Object][spec-operation]
+
+### Operation Object [doc][spec-operation]
+
+<a name="operation-compatibility"></a>
+
+* `operationId`属性,新旧OAS必须完全一致。
+* `parameters`属性,对它检查须在考虑到[Path Item Object parameters属性][spec-path-item-parameters]的情况下进行:
+  * 新OAS可以新增[Parameter Object][spec-parameter],但是新增的[Parameter Object][spec-parameter]的`required`属性必须为`false`
+  * 新OAS可以删除[Parameter Object][spec-parameter]
+  * 针对单个[Parameter Object][spec-parameter]的修改的检查见[Parameter Object兼容性检查](#parameter-compatibility)(在同一个[Operation Object][spec-operation]下[Parameter Object][spec-parameter]依靠`name`和`in`两个属性作为ID)。
+* `requestBody`属性,见[Request Body Object兼容性检查](#request-body-compatibility)
+* `responses`属性,见[Responses Object兼容性检查](#responses-compatibility)
+
+### Parameter Object [doc][spec-parameter]
+
+<a name="parameter-compatibility"></a>
+
+* `required`属性,只允许`true(旧) -> false(新)`
+* `allowEmptyValue`属性,只允许`false(旧) -> true(新)`的变化
+* `style`属性,新旧OAS必须保持一致
+* `explode`属性,新旧OAS必须保持一致
+* `allowReserved`属性,只允许`false(旧) -> true(新)`的变化
+* `schema`属性,见[Schema Object兼容性检查](#schema-compatibility)
+* `content`属性,新OAS必须包含旧OAS的所有media type(`content`的key),且不能新增media type
+  * 见[Media Type Object兼容性检查](#media-type-compatibility)
+
+### Request Body Object [doc][spec-request-body]
+
+<a name="request-body-compatibility"></a>
+
+* `content`属性,新OAS必须包含旧OAS的所有media type(`content`的key)
+  * 见[Media Type Object兼容性检查](#media-type-compatibility)
+* `required`属性,只允许`true(旧) -> false(新)`的变化
+
+### Media Type Object [doc][spec-media-type]
+
+<a name="media-type-compatibility"></a>
+
+* `schema`属性,见[Schema Object兼容性检查](#schema-compatibility)
+* `encoding`属性,该属性仅适用于`requestBody`,因此新旧OAS的property name(`encoding`的key)必须完全一致
+  * 见[Encoding Object兼容性检查](#encoding-compatibility)
+
+### Responses Object [doc][spec-responses]
+
+<a name="responses-compatibility"></a>
+
+* `default`属性,如果旧OAS没有定义`default`,那么新OAS也不能定义`default`。
+* `{Http Status Code}`属性,新OAS不允许新增。
+* 见[Response Object兼容性检查](#response-compatibility)
+
+### Response Object [doc][spec-response]
+
+<a name="response-compatibility"></a>
+
+* `headers`属性,新OAS必须包含旧OAS的所有header name(`headers`的key),可以新增header name
+  * [Header Object][spec-header]见[Header Object兼容性检查](#header-compatibility)
+* `content`属性,新OAS必须包含旧OAS的所有media type(`content`的key),可以新增media type
+  - [Media Type Object][spec-media-type]见[Media Type Object兼容性检查](#media-type-compatibility)
+
+### Schema Object [doc][spec-schema]
+
+<a name="schema-compatibility"></a>
+
+OAS中定义,Schema Object可以直接或间接用在:
+
+* 请求类:[Parameter Object][spec-parameter]、[Request Body Object][spec-request-body]、[Header Object][spec-header]
+* 响应类:[Header Object][spec-header]、[Response Object][spec-response]
+
+不同用途的兼容性检查规则有所不同。
+
+### 用做请求时
+
+原则上,当Schema Object用在请求时,只允许从紧到松的变化。
+
+* `type, format`组合所允许的变化范围
+
+| 旧(type,format)  | 新(type,format)                                              |
+| ---------------- | ------------------------------------------------------------ |
+| integer, null    | integer, int64<br />number, double<br />number, null         |
+| integer, int32   | integer, int64<br />integer, null<br />number, float<br />number, double<br />number, null |
+| integer, int64   | integer, null<br />number, double<br />number, null          |
+| number, null     | number, double                                               |
+| number, float    | number, null<br />number, double                             |
+| number, double   | number, null                                                 |
+| string, null     | string, password                                             |
+| string, password | string, null                                                 |
+
+* `allOf`、`oneOf`、`anyOf`属性,在combine之后再做检查
+* `multipleOf`属性,如果旧OAS为null。新OAS必须==旧OAS或者新OAS是旧OAS的因子,比如6(旧)->3(新)
+* `maximum`、`maxLength`、`maxItems`、`maxProperties`,如果旧OAS为null,那么新OAS也必须是null。其他情况,新OAS必须>=旧OAS。
+* `minimum`、`minLenght`、`minItems`、`minProperties`,如果旧OAS为null,那么新OAS也必须是null。其他情况,新OAS必须<=旧OAS。
+* `exclusiveMaximum`、`exclusiveMinimum`属性,仅允许`true(旧)->false(新)`的变化
+* `uniqueItems`属性,只允许`true(旧)->false(新)`的变化。
+* `required`属性,新OAS必须==旧OAS,或者新OAS是旧OAS的子集。
+* `enum`属性,新OAS必须==旧OAS,或者新OAS是旧OAS的超集。
+* `properties`属性,新OAS可以新增property name(`properties`的key)或者减少property name。
+* `nullable`属性,只允许`false(旧)->true(新)`的变化。
+* `discriminator`属性,新旧OAS必须完全一致。
+* `xml`属性,新旧OAS必须完全一致。
+* `readOnly`、`writeOnly`,新旧OAS必须完全一致。
+
+### 用做响应时
+
+原则上,当Schema Object用在响应时,只允许从松到紧的变化。
+
+* `type, format`组合所允许的变化范围
+
+| 旧(type,format)  | 新(type,format)                    |
+| ---------------- | ---------------------------------- |
+| integer, null    | integer, int64<br />integer, int32 |
+| integer, int64   | integer, null<br />interger, int32 |
+| number, null     | number, double<br />number, float  |
+| number, double   | number, null<br />number, float    |
+| string, null     | string, password                   |
+| string, password | string, null                       |
+
+* `allOf`、`oneOf`、`anyOf`属性,在combine之后再做检查
+* `multipleOf`属性,如果旧OAS为null。新OAS必须==旧OAS或者新OAS是旧OAS的倍数,比如3(旧)->6(新)
+* `maximum`、`maxLength`、`maxItems`、`maxProperties`,如果旧OAS为null,那么新OAS也必须是null。其他情况,新OAS必须<=旧OAS。
+* `minimum`、`minLenght`、`minItems`、`minProperties`,如果旧OAS为null,那么新OAS也必须是null。其他情况,新OAS必须>=旧OAS。
+* `exclusiveMaximum`、`exclusiveMinimum`属性,仅允许`false(旧)->true(新)`的变化
+* `uniqueItems`属性,只允许`false(旧)->true(新)`的变化。
+* `required`属性,新OAS必须==旧OAS或者,新OAS是旧OAS的超集。
+* `enum`属性,新OAS必须==旧OAS,或者新OAS是旧OAS的子集。
+* `properties`属性,新OAS可以新增property name(`properties`的key)或者减少property name。
+* `nullable`属性,只允许`true(旧)->false(新)`的变化。
+* `discriminator`属性,新旧OAS必须完全一致。
+* `xml`属性,新旧OAS必须完全一致。
+* `readOnly`、`writeOnly`,新旧OAS必须完全一致。
+
+### Encoding Object [doc][spec-encoding]
+
+<a name="encoding-compatibility"></a>
+
+PS. Encoding Object仅针对Request Body Object有用
+
+* `contentType`属性,新旧OAS必须保持一致
+* `headers`属性,新OAS必须包含旧OAS的所有header name(`headers`的key),且不能新增header name,但是可以减少header name
+  * [Header Object][spec-header]见[Header Object兼容性检查](#header-compatibility)
+* `style`属性,新旧OAS必须保持一致
+* `explode`属性,新旧OAS必须保持一致
+* `allowReserved`属性,只允许`false(旧) -> true(新)`的变化
+
+### Header Object [doc][spec-header]
+
+<a name="header-compatibility"></a>
+
+- `schema`属性,见[Schema Object兼容性检查](#schema-compatibility)
+
+### Components Object [doc][spec-components]
+
+<a name="components-compatibility"></a>
+
+[Components Object][spec-components]定义的都是可复用OAS Object,而在检查兼容性的时候所有`$ref`都已被解析了,因此不需要对[Components Object][spec-components]的属性做兼容性检查。
+
+
+[spec-operation]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#operationObject
+[openapi-3.0.2]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md
+[spec-openapi]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#openapi-object
+[spec-server]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#serverObject
+[spec-info]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#infoObject
+[spec-paths]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#paths-object
+[spec-path-item]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#pathItemObject
+[spec-parameter]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#parameterObject
+[spec-request-body]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#requestBodyObject
+[spec-security-scheme]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#securitySchemeObject
+[spec-components]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#components-object
+[spec-tag]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#tagObject
+[spec-schema]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#schemaObject
+
+[spec-media-type]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#media-type-object
+[spec-response]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#response-object
+[spec-path-templating]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#path-templating
+[spec-parameterIn]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#parameterIn
+[spec-encoding]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#encodingObject
+[spec-header]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#header-object
+[spec-info]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#infoObject
+[spec-reference]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#reference-object
+[swagger-parser]: https://github.com/swagger-api/swagger-parser
+[spec-path-item-parameters]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#user-content-pathitemparameters
+[spec-responses]: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#responsesObject
\ No newline at end of file
diff --git a/oas-validator/distribution/pom.xml b/oas-validator/distribution/pom.xml
new file mode 100755
index 0000000..2e7cf98
--- /dev/null
+++ b/oas-validator/distribution/pom.xml
@@ -0,0 +1,107 @@
+<?xml version="1.0"?>
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one or more
+  ~ contributor license agreements.  See the NOTICE file distributed with
+  ~ this work for additional information regarding copyright ownership.
+  ~ The ASF licenses this file to You under the Apache License, Version 2.0
+  ~ (the "License"); you may not use this file except in compliance with
+  ~ the License.  You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <parent>
+    <groupId>org.apache.servicecomb.toolkit</groupId>
+    <artifactId>oas-validator-parent</artifactId>
+    <version>0.2.0-SNAPSHOT</version>
+  </parent>
+  <artifactId>oas-validator-distribution</artifactId>
+  <packaging>pom</packaging>
+  <dependencies>
+    <dependency>
+      <groupId>org.apache.servicecomb.toolkit</groupId>
+      <artifactId>oas-validator-core</artifactId>
+      <version>0.2.0-SNAPSHOT</version>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.servicecomb.toolkit</groupId>
+      <artifactId>oas-validator-core-spring</artifactId>
+      <version>0.2.0-SNAPSHOT</version>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.servicecomb.toolkit</groupId>
+      <artifactId>oas-validator-test</artifactId>
+      <version>0.2.0-SNAPSHOT</version>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.servicecomb.toolkit</groupId>
+      <artifactId>oas-validator-compliance</artifactId>
+      <version>0.2.0-SNAPSHOT</version>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.servicecomb.toolkit</groupId>
+      <artifactId>oas-validator-compliance-spring</artifactId>
+      <version>0.2.0-SNAPSHOT</version>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.servicecomb.toolkit</groupId>
+      <artifactId>oas-validator-compatibility</artifactId>
+      <version>0.2.0-SNAPSHOT</version>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.servicecomb.toolkit</groupId>
+      <artifactId>oas-validator-compatibility-spring</artifactId>
+      <version>0.2.0-SNAPSHOT</version>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.servicecomb.toolkit</groupId>
+      <artifactId>oas-validator-web</artifactId>
+      <version>0.2.0-SNAPSHOT</version>
+    </dependency>
+  </dependencies>
+  <profiles>
+    <profile>
+      <id>release</id>
+      <build>
+        <plugins>
+          <plugin>
+            <artifactId>maven-assembly-plugin</artifactId>
+            <executions>
+              <execution>
+                <id>bin</id>
+                <phase>package</phase>
+                <goals>
+                  <goal>single</goal>
+                </goals>
+                <configuration>
+                  <descriptors>
+                    <descriptor>src/assembly/bin.xml</descriptor>
+                  </descriptors>
+                </configuration>
+              </execution>
+              <execution>
+                <id>src</id>
+                <phase>package</phase>
+                <goals>
+                  <goal>single</goal>
+                </goals>
+                <configuration>
+                  <descriptors>
+                    <descriptor>src/assembly/src.xml</descriptor>
+                  </descriptors>
+                </configuration>
+              </execution>
+            </executions>
+          </plugin>
+        </plugins>
+      </build>
+    </profile>
+  </profiles>
+</project>
diff --git a/oas-validator/distribution/src/assembly/bin.xml b/oas-validator/distribution/src/assembly/bin.xml
new file mode 100755
index 0000000..cb908a3
--- /dev/null
+++ b/oas-validator/distribution/src/assembly/bin.xml
@@ -0,0 +1,65 @@
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one or more
+  ~ contributor license agreements.  See the NOTICE file distributed with
+  ~ this work for additional information regarding copyright ownership.
+  ~ The ASF licenses this file to You under the Apache License, Version 2.0
+  ~ (the "License"); you may not use this file except in compliance with
+  ~ the License.  You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<assembly xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.2 http://maven.apache.org/xsd/assembly-1.1.2.xsd">
+    <includeBaseDirectory>true</includeBaseDirectory>
+    <baseDirectory>${project.build.finalName}-bin</baseDirectory>
+    <id>bin</id>
+    <formats>
+        <format>zip</format>
+    </formats>
+    <fileSets>
+        <fileSet>
+            <directory>../doc</directory>
+            <outputDirectory>/doc</outputDirectory>
+        </fileSet>
+        <fileSet>
+            <directory>../</directory>
+            <outputDirectory>/</outputDirectory>
+            <includes>
+                <include>README.md</include>
+            </includes>
+        </fileSet>
+        <!-- include the LICENSE file from release directory -->
+        <fileSet>
+            <directory>src/release</directory>
+            <outputDirectory>/</outputDirectory>
+            <includes>
+                <include>LICENSE</include>
+                <include>licenses/**</include>
+            </includes>
+        </fileSet>
+        <!-- include alpha server exec into bin directory -->
+        <fileSet>
+            <directory>../oas-validator-web//target</directory>
+            <outputDirectory>/</outputDirectory>
+            <includes>
+                <include>oas-validator-web-exec.jar</include>
+            </includes>
+            <fileMode>0755</fileMode>
+        </fileSet>
+    </fileSets>
+    <dependencySets>
+        <dependencySet>
+            <useProjectArtifact>true</useProjectArtifact>
+            <unpack>false</unpack>
+            <outputDirectory>/libs</outputDirectory>
+            <scope>runtime</scope>
+        </dependencySet>
+    </dependencySets>
+</assembly>
diff --git a/oas-validator/distribution/src/assembly/src.xml b/oas-validator/distribution/src/assembly/src.xml
new file mode 100755
index 0000000..b365db5
--- /dev/null
+++ b/oas-validator/distribution/src/assembly/src.xml
@@ -0,0 +1,66 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+    Licensed to the Apache Software Foundation (ASF) under one or more
+    contributor license agreements.  See the NOTICE file distributed with
+    this work for additional information regarding copyright ownership.
+    The ASF licenses this file to You under the Apache License, Version 2.0
+    (the "License"); you may not use this file except in compliance with
+    the License.  You may obtain a copy of the License at
+
+         http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+
+-->
+<assembly>
+  <id>src</id>
+  <formats>
+    <format>zip</format>
+  </formats>
+  <includeBaseDirectory>true</includeBaseDirectory>
+  <baseDirectory>${project.build.finalName}-src</baseDirectory>
+  <fileSets>
+    <!-- Binary Files -->
+    <fileSet>
+      <directory>..</directory>
+      <outputDirectory></outputDirectory>
+      <includes>
+        <include>**/*</include>
+      </includes>
+      <!-- excludes the binary files -->
+      <excludes>
+        <!-- exclude the mvn wrapper in the source artifact -->
+        <exclude>Jenkinsfile</exclude>
+        <exclude>mvnw*</exclude>
+        <exclude>.mvn/**</exclude>
+
+        <exclude>**/eclipse-classes/**</exclude>
+        <exclude>**/target/**</exclude>
+        <exclude>**/build/**</exclude>
+        <exclude>**/eclipse-classes/**</exclude>
+        <exclude>**/.*</exclude>
+        <exclude>**/.*/**</exclude>
+        <exclude>*.enc</exclude>
+        <exclude>*.gpg</exclude>
+        <exclude>random_seed</exclude>
+        <exclude>**/surefire*</exclude>
+        <exclude>**/svn-commit*</exclude>
+
+        <exclude>**/.idea/**</exclude>
+        <exclude>**/*.iml</exclude>
+        <exclude>**/*.ipr</exclude>
+        <exclude>**/*.iws</exclude>
+
+        <exclude>**/cobertura.ser</exclude>
+
+        <exclude>**/node_modules/**</exclude>
+      </excludes>
+    </fileSet>
+
+  </fileSets>
+</assembly>
diff --git a/oas-validator/distribution/src/release/LICENSE b/oas-validator/distribution/src/release/LICENSE
new file mode 100755
index 0000000..d649bec
--- /dev/null
+++ b/oas-validator/distribution/src/release/LICENSE
@@ -0,0 +1,437 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
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+
+================================================================
+This product bundles the following libraries which are licensed
+under the Apache License v2.
+For details, see their respective project links.
+
+* Apache Commons Codec (commons-codec:commons-codec:1.9 - http://commons.apache.org/proper/commons-codec/)
+* Apache Commons Collections (org.apache.commons:commons-collections4:4.3 - http://commons.apache.org/proper/commons-collections/)
+* Apache Commons Lang (org.apache.commons:commons-lang3:3.8.1 - http://commons.apache.org/proper/commons-lang/)
+* Apache Commons Logging (commons-logging:commons-logging:1.2 - http://commons.apache.org/proper/commons-logging/)
+* Apache HttpClient (org.apache.httpcomponents:httpclient:4.5.2 - http://hc.apache.org/httpcomponents-client)
+* Apache HttpCore (org.apache.httpcomponents:httpcore:4.4.4 - http://hc.apache.org/httpcomponents-core-ga)
+* Apache Log4j API (org.apache.logging.log4j:log4j-api:2.11.2 - https://logging.apache.org/log4j/2.x/log4j-api/)
+* Apache Log4j to SLF4J Adapter (org.apache.logging.log4j:log4j-to-slf4j:2.11.2 - https://logging.apache.org/log4j/2.x/log4j-to-slf4j/)
+* ASM based accessors helper used by json-smart (net.minidev:accessors-smart:1.2 - http://www.minidev.net/)
+* AssertJ fluent assertions (org.assertj:assertj-core:3.11.1 - http://assertj.org/assertj-core)
+* attoparser (org.attoparser:attoparser:2.0.5.RELEASE - http://www.attoparser.org)
+* Bean Validation API (javax.validation:validation-api:1.1.0.Final - http://beanvalidation.org)
+* Bean Validation API (javax.validation:validation-api:2.0.1.Final - http://beanvalidation.org)
+* Bootstrap (org.webjars:bootstrap:4.3.1 - http://webjars.org)
+* Byte Buddy (without dependencies) (net.bytebuddy:byte-buddy:1.9.3 - http://bytebuddy.net/byte-buddy)
+* Byte Buddy Java agent (net.bytebuddy:byte-buddy-agent:1.9.3 - http://bytebuddy.net/byte-buddy-agent)
+* ClassMate (com.fasterxml:classmate:1.3.4 - http://github.com/FasterXML/java-classmate)
+* Commons IO (commons-io:commons-io:2.4 - http://commons.apache.org/io/)
+* error-prone annotations (com.google.errorprone:error_prone_annotations:2.2.0 - http://nexus.sonatype.org/oss-repository-hosting.html/error_prone_parent/error_prone_annotations)
+* FindBugs-jsr305 (com.google.code.findbugs:jsr305:3.0.1 - http://findbugs.sourceforge.net/)
+* Guava: Google Core Libraries for Java (com.google.guava:guava:27.0.1-android - https://github.com/google/guava/guava)
+* Guava InternalFutureFailureAccess and InternalFutures (com.google.guava:failureaccess:1.0.1 - https://github.com/google/guava/failureaccess)
+* Guava ListenableFuture only (com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava - https://github.com/google/guava/listenablefuture)
+* Hibernate Validator Engine (org.hibernate.validator:hibernate-validator:6.0.16.Final - http://hibernate.org/validator/hibernate-validator)
+* J2ObjC Annotations (com.google.j2objc:j2objc-annotations:1.1 - https://github.com/google/j2objc/)
+* Jackson-annotations (com.fasterxml.jackson.core:jackson-annotations:2.9.0 - http://github.com/FasterXML/jackson)
+* Jackson-annotations (com.fasterxml.jackson.core:jackson-annotations:2.9.8 - http://github.com/FasterXML/jackson)
+* Jackson-core (com.fasterxml.jackson.core:jackson-core:2.9.8 - https://github.com/FasterXML/jackson-core)
+* jackson-databind (com.fasterxml.jackson.core:jackson-databind:2.9.8 - http://github.com/FasterXML/jackson)
+* Jackson-dataformat-YAML (com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.9.8 - https://github.com/FasterXML/jackson-dataformats-text)
+* Jackson datatype: jdk8 (com.fasterxml.jackson.datatype:jackson-datatype-jdk8:2.9.8 - https://github.com/FasterXML/jackson-modules-java8/jackson-datatype-jdk8)
+* Jackson datatype: JSR310 (com.fasterxml.jackson.datatype:jackson-datatype-jsr310:2.9.8 - https://github.com/FasterXML/jackson-modules-java8/jackson-datatype-jsr310)
+* Jackson-module-parameter-names (com.fasterxml.jackson.module:jackson-module-parameter-names:2.9.8 - https://github.com/FasterXML/jackson-modules-java8/jackson-module-parameter-names)
+* JBoss Logging 3 (org.jboss.logging:jboss-logging:3.3.2.Final - http://www.jboss.org)
+* Joda-Time (joda-time:joda-time:2.9.7 - http://www.joda.org/joda-time/)
+* JSONassert (org.skyscreamer:jsonassert:1.5.0 - https://github.com/skyscreamer/JSONassert)
+* JSON library from Android SDK (com.vaadin.external.google:android-json:0.0.20131108.vaadin1 - http://developer.android.com/sdk)
+* JSON Small and Fast Parser (net.minidev:json-smart:2.3 - http://www.minidev.net/)
+* libphonenumber (com.googlecode.libphonenumber:libphonenumber:8.0.0 - https://github.com/googlei18n/libphonenumber/)
+* micrometer-core (io.micrometer:micrometer-core:1.1.4 - https://github.com/micrometer-metrics/micrometer)
+* oas-validator-compatibility (org.apache.servicecomb.toolkit:oas-validator-compatibility:0.2.0-SNAPSHOT - no url defined)
+* oas-validator-compatibility-spring (org.apache.servicecomb.toolkit:oas-validator-compatibility-spring:0.2.0-SNAPSHOT - no url defined)
+* oas-validator-compliance (org.apache.servicecomb.toolkit:oas-validator-compliance:0.2.0-SNAPSHOT - no url defined)
+* oas-validator-compliance-spring (org.apache.servicecomb.toolkit:oas-validator-compliance-spring:0.2.0-SNAPSHOT - no url defined)
+* oas-validator-core (org.apache.servicecomb.toolkit:oas-validator-core:0.2.0-SNAPSHOT - no url defined)
+* oas-validator-core-spring (org.apache.servicecomb.toolkit:oas-validator-core-spring:0.2.0-SNAPSHOT - no url defined)
+* oas-validator-test (org.apache.servicecomb.toolkit:oas-validator-test:0.2.0-SNAPSHOT - no url defined)
+* Objenesis (org.objenesis:objenesis:2.6 - http://objenesis.org)
+* org.xmlunit:xmlunit-core (org.xmlunit:xmlunit-core:2.6.2 - https://www.xmlunit.org/)
+* project ':json-path' (com.jayway.jsonpath:json-path:2.4.0 - https://github.com/jayway/JsonPath)
+* SnakeYAML (org.yaml:snakeyaml:1.23 - http://www.snakeyaml.org)
+* Spring AOP (org.springframework:spring-aop:5.1.6.RELEASE - https://github.com/spring-projects/spring-framework)
+* Spring Beans (org.springframework:spring-beans:5.1.6.RELEASE - https://github.com/spring-projects/spring-framework)
+* Spring Boot (org.springframework.boot:spring-boot:2.1.4.RELEASE - https://projects.spring.io/spring-boot/#/spring-boot-parent/spring-boot)
+* Spring Boot Actuator (org.springframework.boot:spring-boot-actuator:2.1.4.RELEASE - https://projects.spring.io/spring-boot/#/spring-boot-parent/spring-boot-actuator)
+* Spring Boot Actuator AutoConfigure (org.springframework.boot:spring-boot-actuator-autoconfigure:2.1.4.RELEASE - https://projects.spring.io/spring-boot/#/spring-boot-parent/spring-boot-actuator-autoconfigure)
+* Spring Boot Actuator Starter (org.springframework.boot:spring-boot-starter-actuator:2.1.4.RELEASE - https://projects.spring.io/spring-boot/#/spring-boot-parent/spring-boot-starters/spring-boot-starter-actuator)
+* Spring Boot AutoConfigure (org.springframework.boot:spring-boot-autoconfigure:2.1.4.RELEASE - https://projects.spring.io/spring-boot/#/spring-boot-parent/spring-boot-autoconfigure)
+* Spring Boot Json Starter (org.springframework.boot:spring-boot-starter-json:2.1.4.RELEASE - https://projects.spring.io/spring-boot/#/spring-boot-parent/spring-boot-starters/spring-boot-starter-json)
+* Spring Boot Logging Starter (org.springframework.boot:spring-boot-starter-logging:2.1.4.RELEASE - https://projects.spring.io/spring-boot/#/spring-boot-parent/spring-boot-starters/spring-boot-starter-logging)
+* Spring Boot Starter (org.springframework.boot:spring-boot-starter:2.1.4.RELEASE - https://projects.spring.io/spring-boot/#/spring-boot-parent/spring-boot-starters/spring-boot-starter)
+* Spring Boot Test (org.springframework.boot:spring-boot-test:2.1.4.RELEASE - https://projects.spring.io/spring-boot/#/spring-boot-parent/spring-boot-test)
+* Spring Boot Test Auto-Configure (org.springframework.boot:spring-boot-test-autoconfigure:2.1.4.RELEASE - https://projects.spring.io/spring-boot/#/spring-boot-parent/spring-boot-test-autoconfigure)
+* Spring Boot Test Starter (org.springframework.boot:spring-boot-starter-test:2.1.4.RELEASE - https://projects.spring.io/spring-boot/#/spring-boot-parent/spring-boot-starters/spring-boot-starter-test)
+* Spring Boot Thymeleaf Starter (org.springframework.boot:spring-boot-starter-thymeleaf:2.1.4.RELEASE - https://projects.spring.io/spring-boot/#/spring-boot-parent/spring-boot-starters/spring-boot-starter-thymeleaf)
+* Spring Boot Tomcat Starter (org.springframework.boot:spring-boot-starter-tomcat:2.1.4.RELEASE - https://projects.spring.io/spring-boot/#/spring-boot-parent/spring-boot-starters/spring-boot-starter-tomcat)
+* Spring Boot Web Starter (org.springframework.boot:spring-boot-starter-web:2.1.4.RELEASE - https://projects.spring.io/spring-boot/#/spring-boot-parent/spring-boot-starters/spring-boot-starter-web)
+* Spring Commons Logging Bridge (org.springframework:spring-jcl:5.1.6.RELEASE - https://github.com/spring-projects/spring-framework)
+* Spring Context (org.springframework:spring-context:5.1.6.RELEASE - https://github.com/spring-projects/spring-framework)
+* Spring Core (org.springframework:spring-core:5.1.6.RELEASE - https://github.com/spring-projects/spring-framework)
+* Spring Expression Language (SpEL) (org.springframework:spring-expression:5.1.6.RELEASE - https://github.com/spring-projects/spring-framework)
+* Spring TestContext Framework (org.springframework:spring-test:5.1.6.RELEASE - https://github.com/spring-projects/spring-framework)
+* Spring Web (org.springframework:spring-web:5.1.6.RELEASE - https://github.com/spring-projects/spring-framework)
+* Spring Web MVC (org.springframework:spring-webmvc:5.1.6.RELEASE - https://github.com/spring-projects/spring-framework)
+* swagger-annotations (io.swagger:swagger-annotations:1.5.22 - https://github.com/swagger-api/swagger-core/modules/swagger-annotations)
+* swagger-annotations (io.swagger.core.v3:swagger-annotations:2.0.8 - https://github.com/swagger-api/swagger-core/modules/swagger-annotations)
+* swagger-compat-spec-parser (io.swagger:swagger-compat-spec-parser:1.0.44 - http://nexus.sonatype.org/oss-repository-hosting.html/swagger-parser-project/modules/swagger-compat-spec-parser)
+* swagger-core (io.swagger:swagger-core:1.5.22 - https://github.com/swagger-api/swagger-core/modules/swagger-core)
+* swagger-core (io.swagger.core.v3:swagger-core:2.0.8 - https://github.com/swagger-api/swagger-core/modules/swagger-core)
+* swagger-models (io.swagger:swagger-models:1.5.22 - https://github.com/swagger-api/swagger-core/modules/swagger-models)
+* swagger-models (io.swagger.core.v3:swagger-models:2.0.8 - https://github.com/swagger-api/swagger-core/modules/swagger-models)
+* swagger-parser (io.swagger:swagger-parser:1.0.44 - http://nexus.sonatype.org/oss-repository-hosting.html/swagger-parser-project/modules/swagger-parser)
+* swagger-parser (io.swagger.parser.v3:swagger-parser:2.0.12 - http://nexus.sonatype.org/oss-repository-hosting.html/swagger-parser-project/modules/swagger-parser)
+* swagger-parser (io.swagger.parser.v3:swagger-parser-core:2.0.12 - http://nexus.sonatype.org/oss-repository-hosting.html/swagger-parser-project/modules/swagger-parser-core)
+* swagger-parser-v2-converter (io.swagger.parser.v3:swagger-parser-v2-converter:2.0.12 - http://nexus.sonatype.org/oss-repository-hosting.html/swagger-parser-project/modules/swagger-parser-v2-converter)
+* swagger-parser-v3 (io.swagger.parser.v3:swagger-parser-v3:2.0.12 - http://nexus.sonatype.org/oss-repository-hosting.html/swagger-parser-project/modules/swagger-parser-v3)
+* thymeleaf (org.thymeleaf:thymeleaf:3.0.11.RELEASE - http://www.thymeleaf.org)
+* thymeleaf-extras-java8time (org.thymeleaf.extras:thymeleaf-extras-java8time:3.0.4.RELEASE - http://www.thymeleaf.org)
+* thymeleaf-spring5 (org.thymeleaf:thymeleaf-spring5:3.0.11.RELEASE - http://www.thymeleaf.org)
+* tomcat-embed-core (org.apache.tomcat.embed:tomcat-embed-core:9.0.17 - https://tomcat.apache.org/)
+* tomcat-embed-el (org.apache.tomcat.embed:tomcat-embed-el:9.0.17 - https://tomcat.apache.org/)
+* tomcat-embed-websocket (org.apache.tomcat.embed:tomcat-embed-websocket:9.0.17 - https://tomcat.apache.org/)
+* unbescape (org.unbescape:unbescape:1.1.6.RELEASE - http://www.unbescape.org)
+* json-schema-core (com.github.java-json-tools:json-schema-core:1.2.8 - https://github.com/java-json-tools/json-schema-core)
+* json-schema-validator (com.github.java-json-tools:json-schema-validator:2.2.8 - https://github.com/box-metadata/json-schema-validator)
+* com.github.fge:btf (com.github.fge:btf:1.2 - https://github.com/fge/btf)
+* com.github.fge:jackson-coreutils (com.github.fge:jackson-coreutils:1.6 - https://github.com/fge/jackson-coreutils)
+* com.github.fge:json-patch (com.github.fge:json-patch:1.6 - https://github.com/fge/json-patch)
+* com.github.fge:msg-simple (com.github.fge:msg-simple:1.1 - https://github.com/fge/msg-simple)
+* com.github.fge:uri-template (com.github.fge:uri-template:0.9 - https://github.com/fge/uri-template)
+
+===========================================================================
+This product bundles JavaBeans Activation Framework which are licensed under the
+COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL) v1.0.
+For details, see http://java.sun.com/products/javabeans/jaf/index.jsp
+You can find a copy of the License at licenses/LICENSE-cddl-v10
+
+* JavaBeans Activation Framework (JAF) (javax.activation:activation:1.1 - http://java.sun.com/products/javabeans/jaf/index.jsp)
+
+===========================================================================
+This product bundles the following libraries which are licensed under the
+CDDL + GPLv2 with classpath exception.
+For details, see their respective project links.
+You can find a copy of the License at licenses/LICENSE-cddl-gplv2
+
+* javax.annotation API (javax.annotation:javax.annotation-api:1.3.2 - http://jcp.org/en/jsr/detail?id=250)
+* jaxb-api (javax.xml.bind:jaxb-api:2.3.0 - https://github.com/javaee/jaxb-spec/jaxb-api)
+* JavaMail API jar (javax.mail:mailapi:1.4.3 - http://java.sun.com/projects/javamail/mailapi)
+
+===========================================================================
+This product bundles Mozilla Rhino which is licensed under the
+Mozilla Public License, Version 2.0.
+For details, see https://developer.mozilla.org/en/Rhino
+You can find a copy of the License at licenses/LICENSE-mpl-v20
+
+* Mozilla Rhino (org.mozilla:rhino:1.7R4 - https://developer.mozilla.org/en/Rhino)
+
+===========================================================================
+This product bundles Webjars which is licensed under the
+MIT License.
+For details, see their respective project links.
+You can find a copy of the License at licenses/LICENSE-webjars
+
+* Popper.js (org.webjars:popper.js:1.14.3 - http://webjars.org)
+* jquery (org.webjars:jquery:3.0.0 - http://webjars.org)
+
+===========================================================================
+This product bundles Animal Sniffer Annotations which is licensed under the
+MIT License.
+For details, see http://www.mojohaus.org/animal-sniffer/animal-sniffer-annotations
+You can find a copy of the License at licenses/LICENSE-mit-unknown
+
+* Animal Sniffer Annotations (org.codehaus.mojo:animal-sniffer-annotations:1.17 - http://www.mojohaus.org/animal-sniffer/animal-sniffer-annotations)
+
+===========================================================================
+This product bundles Checker Qual which is licensed under the
+MIT License.
+For details, see https://checkerframework.org
+You can find a copy of the License at licenses/LICENSE-mit-unknown
+
+* Checker Qual (org.checkerframework:checker-compat-qual:2.5.2 - https://checkerframework.org)
+
+===========================================================================
+This product bundles Mockito which is licensed under the
+MIT License.
+For details, see https://github.com/mockito/mockito
+You can find a copy of the License at licenses/LICENSE-mockito
+
+* mockito-core (org.mockito:mockito-core:2.23.4 - https://github.com/mockito/mockito)
+
+===========================================================================
+This product bundles SLF4J which is licensed under the
+MIT License.
+For details, see http://www.slf4j.org
+You can find a copy of the License at licenses/LICENSE-slf4j
+
+* JUL to SLF4J bridge (org.slf4j:jul-to-slf4j:1.7.26 - http://www.slf4j.org)
+* SLF4J API Module (org.slf4j:slf4j-api:1.6.3 - http://www.slf4j.org)
+* SLF4J API Module (org.slf4j:slf4j-api:1.7.25 - http://www.slf4j.org)
+* SLF4J Extensions Module (org.slf4j:slf4j-ext:1.6.3 - http://www.slf4j.org)
+
+===========================================================================
+This product bundles Project Lombok which is licensed under the
+MIT License.
+For details, see https://projectlombok.org
+You can find a copy of the License at licenses/LICENSE-lombok
+
+* Project Lombok (org.projectlombok:lombok:1.18.6 - https://projectlombok.org)
+
+===========================================================================
+This product bundles JOpt Simple which is licensed under the
+MIT License.
+For details, see http://pholser.github.io/jopt-simple
+You can find a copy of the License at licenses/LICENSE-jopt
+
+* JOpt Simple (net.sf.jopt-simple:jopt-simple:5.0.3 - http://pholser.github.io/jopt-simple)
+
+===========================================================================
+This product bundles CAL10N which is licensed under the
+MIT License.
+For details, see http://cal10n.qos.ch/cal10n-api
+You can find a copy of the License at licenses/LICENSE-qos
+
+* Compiler assisted localization library (CAL10N) -    API (ch.qos.cal10n:cal10n-api:0.7.4 - http://cal10n.qos.ch/cal10n-api)
+
+===========================================================================
+This product bundles following libraries which is licensed under the
+Public Domain, per Creative Commons CC0.
+For details, see their respective project links.
+You can find a copy of the License at licenses/LICENSE-cc0
+
+* HdrHistogram (org.hdrhistogram:HdrHistogram:2.1.9 - http://hdrhistogram.github.io/HdrHistogram/)
+* LatencyUtils (org.latencyutils:LatencyUtils:2.0.3 - http://latencyutils.github.io/LatencyUtils/)
+
+===========================================================================
+This product bundles following libraries which is licensed under the
+Eclipse Public License v1.0.
+For details, see their respective project links.
+You can find a copy of the License at licenses/LICENSE-epl-v10
+
+* Logback Classic Module (ch.qos.logback:logback-classic:1.2.3 - http://logback.qos.ch/logback-classic)
+* Logback Core Module (ch.qos.logback:logback-core:1.2.3 - http://logback.qos.ch/logback-core)
+* JUnit (junit:junit:4.12 - http://junit.org)
+
+===========================================================================
+This product bundles Hamcrest which is licensed under the
+2-Clause BSD.
+For details, see https://github.com/hamcrest/JavaHamcrest
+You can find a copy of the License at licenses/LICENSE-hamcrest
+
+* Hamcrest Core (org.hamcrest:hamcrest-core:1.3 - https://github.com/hamcrest/JavaHamcrest/hamcrest-core)
+* Hamcrest library (org.hamcrest:hamcrest-library:1.3 - https://github.com/hamcrest/JavaHamcrest/hamcrest-library)
+
+===========================================================================
+This product bundles ASM Core which is licensed under the
+3-Clause BSD.
+For details, see http://asm.objectweb.org/asm/
+You can find a copy of the License at licenses/LICENSE-asm
+
+* ASM Core (org.ow2.asm:asm:5.0.4 - http://asm.objectweb.org/asm/)
diff --git a/oas-validator/distribution/src/release/licenses/LICENSE-asm b/oas-validator/distribution/src/release/licenses/LICENSE-asm
new file mode 100755
index 0000000..c71bb7b
--- /dev/null
+++ b/oas-validator/distribution/src/release/licenses/LICENSE-asm
@@ -0,0 +1,27 @@
+ASM: a very small and fast Java bytecode manipulation framework
+Copyright (c) 2000-2011 INRIA, France Telecom
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+1. Redistributions of source code must retain the above copyright
+  notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+  notice, this list of conditions and the following disclaimer in the
+  documentation and/or other materials provided with the distribution.
+3. Neither the name of the copyright holders nor the names of its
+  contributors may be used to endorse or promote products derived from
+  this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/oas-validator/distribution/src/release/licenses/LICENSE-cc0 b/oas-validator/distribution/src/release/licenses/LICENSE-cc0
new file mode 100755
index 0000000..2dbc2c0
--- /dev/null
+++ b/oas-validator/distribution/src/release/licenses/LICENSE-cc0
@@ -0,0 +1,27 @@
+CREATIVE COMMONS CORPORATION IS NOT A LAW FIRM AND DOES NOT PROVIDE LEGAL SERVICES. DISTRIBUTION OF THIS DOCUMENT DOES NOT CREATE AN ATTORNEY-CLIENT RELATIONSHIP. CREATIVE COMMONS PROVIDES THIS INFORMATION ON AN "AS-IS" BASIS. CREATIVE COMMONS MAKES NO WARRANTIES REGARDING THE USE OF THIS DOCUMENT OR THE INFORMATION OR WORKS PROVIDED HEREUNDER, AND DISCLAIMS LIABILITY FOR DAMAGES RESULTING FROM THE USE OF THIS DOCUMENT OR THE INFORMATION OR WORKS PROVIDED HEREUNDER.
+Statement of Purpose
+The laws of most jurisdictions throughout the world automatically confer exclusive Copyright and Related Rights (defined below) upon the creator and subsequent owner(s) (each and all, an "owner") of an original work of authorship and/or a database (each, a "Work").
+
+Certain owners wish to permanently relinquish those rights to a Work for the purpose of contributing to a commons of creative, cultural and scientific works ("Commons") that the public can reliably and without fear of later claims of infringement build upon, modify, incorporate in other works, reuse and redistribute as freely as possible in any form whatsoever and for any purposes, including without limitation commercial purposes. These owners may contribute to the Commons to promote the ideal of a free culture and the further production of creative, cultural and scientific works, or to gain reputation or greater distribution for their Work in part through the use and efforts of others.
+
+For these and/or other purposes and motivations, and without any expectation of additional consideration or compensation, the person associating CC0 with a Work (the "Affirmer"), to the extent that he or she is an owner of Copyright and Related Rights in the Work, voluntarily elects to apply CC0 to the Work and publicly distribute the Work under its terms, with knowledge of his or her Copyright and Related Rights in the Work and the meaning and intended legal effect of CC0 on those rights.
+
+1. Copyright and Related Rights. A Work made available under CC0 may be protected by copyright and related or neighboring rights ("Copyright and Related Rights"). Copyright and Related Rights include, but are not limited to, the following:
+
+the right to reproduce, adapt, distribute, perform, display, communicate, and translate a Work;
+moral rights retained by the original author(s) and/or performer(s);
+publicity and privacy rights pertaining to a person's image or likeness depicted in a Work;
+rights protecting against unfair competition in regards to a Work, subject to the limitations in paragraph 4(a), below;
+rights protecting the extraction, dissemination, use and reuse of data in a Work;
+database rights (such as those arising under Directive 96/9/EC of the European Parliament and of the Council of 11 March 1996 on the legal protection of databases, and under any national implementation thereof, including any amended or successor version of such directive); and
+other similar, equivalent or corresponding rights throughout the world based on applicable law or treaty, and any national implementations thereof.
+2. Waiver. To the greatest extent permitted by, but not in contravention of, applicable law, Affirmer hereby overtly, fully, permanently, irrevocably and unconditionally waives, abandons, and surrenders all of Affirmer's Copyright and Related Rights and associated claims and causes of action, whether now known or unknown (including existing as well as future claims and causes of action), in the Work (i) in all territories worldwide, (ii) for the maximum duration provided by applicable law or treaty (including future time extensions), (iii) in any current or future medium and for any number of copies, and (iv) for any purpose whatsoever, including without limitation commercial, advertising or promotional purposes (the "Waiver"). Affirmer makes the Waiver for the benefit of each member of the public at large and to the detriment of Affirmer's heirs and successors, fully intending that such Waiver shall not be subject to revocation, rescission, cancellation, termination, or any other legal or equitable action to disrupt the quiet enjoyment of the Work by the public as contemplated by Affirmer's express Statement of Purpose.
+
+3. Public License Fallback. Should any part of the Waiver for any reason be judged legally invalid or ineffective under applicable law, then the Waiver shall be preserved to the maximum extent permitted taking into account Affirmer's express Statement of Purpose. In addition, to the extent the Waiver is so judged Affirmer hereby grants to each affected person a royalty-free, non transferable, non sublicensable, non exclusive, irrevocable and unconditional license to exercise Affirmer's Copyright and Related Rights in the Work (i) in all territories worldwide, (ii) for the maximum duration provided by applicable law or treaty (including future time extensions), (iii) in any current or future medium and for any number of copies, and (iv) for any purpose whatsoever, including without limitation commercial, advertising or promotional purposes (the "License"). The License shall be deemed effective as of the date CC0 was applied by Affirmer to the Work. Should any part of the License for any reason be judged legally invalid or ineffective under applicable law, such partial invalidity or ineffectiveness shall not invalidate the remainder of the License, and in such case Affirmer hereby affirms that he or she will not (i) exercise any of his or her remaining Copyright and Related Rights in the Work or (ii) assert any associated claims and causes of action with respect to the Work, in either case contrary to Affirmer's express Statement of Purpose.
+
+4. Limitations and Disclaimers.
+
+No trademark or patent rights held by Affirmer are waived, abandoned, surrendered, licensed or otherwise affected by this document.
+Affirmer offers the Work as-is and makes no representations or warranties of any kind concerning the Work, express, implied, statutory or otherwise, including without limitation warranties of title, merchantability, fitness for a particular purpose, non infringement, or the absence of latent or other defects, accuracy, or the present or absence of errors, whether or not discoverable, all to the greatest extent permissible under applicable law.
+Affirmer disclaims responsibility for clearing rights of other persons that may apply to the Work or any use thereof, including without limitation any person's Copyright and Related Rights in the Work. Further, Affirmer disclaims responsibility for obtaining any necessary consents, permissions or other rights required for any use of the Work.
+Affirmer understands and acknowledges that Creative Commons is not a party to this document and has no duty or obligation with respect to this CC0 or use of the Work.
diff --git a/oas-validator/distribution/src/release/licenses/LICENSE-cddl-gplv2 b/oas-validator/distribution/src/release/licenses/LICENSE-cddl-gplv2
new file mode 100755
index 0000000..4b156e6
--- /dev/null
+++ b/oas-validator/distribution/src/release/licenses/LICENSE-cddl-gplv2
@@ -0,0 +1,760 @@
+COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL) Version 1.1
+
+1. Definitions.
+
+    1.1. "Contributor" means each individual or entity that creates or
+    contributes to the creation of Modifications.
+
+    1.2. "Contributor Version" means the combination of the Original
+    Software, prior Modifications used by a Contributor (if any), and
+    the Modifications made by that particular Contributor.
+
+    1.3. "Covered Software" means (a) the Original Software, or (b)
+    Modifications, or (c) the combination of files containing Original
+    Software with files containing Modifications, in each case including
+    portions thereof.
+
+    1.4. "Executable" means the Covered Software in any form other than
+    Source Code.
+
+    1.5. "Initial Developer" means the individual or entity that first
+    makes Original Software available under this License.
+
+    1.6. "Larger Work" means a work which combines Covered Software or
+    portions thereof with code not governed by the terms of this License.
+
+    1.7. "License" means this document.
+
+    1.8. "Licensable" means having the right to grant, to the maximum
+    extent possible, whether at the time of the initial grant or
+    subsequently acquired, any and all of the rights conveyed herein.
+
+    1.9. "Modifications" means the Source Code and Executable form of
+    any of the following:
+
+    A. Any file that results from an addition to, deletion from or
+    modification of the contents of a file containing Original Software
+    or previous Modifications;
+
+    B. Any new file that contains any part of the Original Software or
+    previous Modification; or
+
+    C. Any new file that is contributed or otherwise made available
+    under the terms of this License.
+
+    1.10. "Original Software" means the Source Code and Executable form
+    of computer software code that is originally released under this
+    License.
+
+    1.11. "Patent Claims" means any patent claim(s), now owned or
+    hereafter acquired, including without limitation, method, process,
+    and apparatus claims, in any patent Licensable by grantor.
+
+    1.12. "Source Code" means (a) the common form of computer software
+    code in which modifications are made and (b) associated
+    documentation included in or with such code.
+
+    1.13. "You" (or "Your") means an individual or a legal entity
+    exercising rights under, and complying with all of the terms of,
+    this License. For legal entities, "You" includes any entity which
+    controls, is controlled by, or is under common control with You. For
+    purposes of this definition, "control" means (a) the power, direct
+    or indirect, to cause the direction or management of such entity,
+    whether by contract or otherwise, or (b) ownership of more than
+    fifty percent (50%) of the outstanding shares or beneficial
+    ownership of such entity.
+
+2. License Grants.
+
+    2.1. The Initial Developer Grant.
+
+    Conditioned upon Your compliance with Section 3.1 below and subject
+    to third party intellectual property claims, the Initial Developer
+    hereby grants You a world-wide, royalty-free, non-exclusive license:
+
+    (a) under intellectual property rights (other than patent or
+    trademark) Licensable by Initial Developer, to use, reproduce,
+    modify, display, perform, sublicense and distribute the Original
+    Software (or portions thereof), with or without Modifications,
+    and/or as part of a Larger Work; and
+
+    (b) under Patent Claims infringed by the making, using or selling of
+    Original Software, to make, have made, use, practice, sell, and
+    offer for sale, and/or otherwise dispose of the Original Software
+    (or portions thereof).
+
+    (c) The licenses granted in Sections 2.1(a) and (b) are effective on
+    the date Initial Developer first distributes or otherwise makes the
+    Original Software available to a third party under the terms of this
+    License.
+
+    (d) Notwithstanding Section 2.1(b) above, no patent license is
+    granted: (1) for code that You delete from the Original Software, or
+    (2) for infringements caused by: (i) the modification of the
+    Original Software, or (ii) the combination of the Original Software
+    with other software or devices.
+
+    2.2. Contributor Grant.
+
+    Conditioned upon Your compliance with Section 3.1 below and subject
+    to third party intellectual property claims, each Contributor hereby
+    grants You a world-wide, royalty-free, non-exclusive license:
+
+    (a) under intellectual property rights (other than patent or
+    trademark) Licensable by Contributor to use, reproduce, modify,
+    display, perform, sublicense and distribute the Modifications
+    created by such Contributor (or portions thereof), either on an
+    unmodified basis, with other Modifications, as Covered Software
+    and/or as part of a Larger Work; and
+
+    (b) under Patent Claims infringed by the making, using, or selling
+    of Modifications made by that Contributor either alone and/or in
+    combination with its Contributor Version (or portions of such
+    combination), to make, use, sell, offer for sale, have made, and/or
+    otherwise dispose of: (1) Modifications made by that Contributor (or
+    portions thereof); and (2) the combination of Modifications made by
+    that Contributor with its Contributor Version (or portions of such
+    combination).
+
+    (c) The licenses granted in Sections 2.2(a) and 2.2(b) are effective
+    on the date Contributor first distributes or otherwise makes the
+    Modifications available to a third party.
+
+    (d) Notwithstanding Section 2.2(b) above, no patent license is
+    granted: (1) for any code that Contributor has deleted from the
+    Contributor Version; (2) for infringements caused by: (i) third
+    party modifications of Contributor Version, or (ii) the combination
+    of Modifications made by that Contributor with other software
+    (except as part of the Contributor Version) or other devices; or (3)
+    under Patent Claims infringed by Covered Software in the absence of
+    Modifications made by that Contributor.
+
+3. Distribution Obligations.
+
+    3.1. Availability of Source Code.
+
+    Any Covered Software that You distribute or otherwise make available
+    in Executable form must also be made available in Source Code form
+    and that Source Code form must be distributed only under the terms
+    of this License. You must include a copy of this License with every
+    copy of the Source Code form of the Covered Software You distribute
+    or otherwise make available. You must inform recipients of any such
+    Covered Software in Executable form as to how they can obtain such
+    Covered Software in Source Code form in a reasonable manner on or
+    through a medium customarily used for software exchange.
+
+    3.2. Modifications.
+
+    The Modifications that You create or to which You contribute are
+    governed by the terms of this License. You represent that You
+    believe Your Modifications are Your original creation(s) and/or You
+    have sufficient rights to grant the rights conveyed by this License.
+
+    3.3. Required Notices.
+
+    You must include a notice in each of Your Modifications that
+    identifies You as the Contributor of the Modification. You may not
+    remove or alter any copyright, patent or trademark notices contained
+    within the Covered Software, or any notices of licensing or any
+    descriptive text giving attribution to any Contributor or the
+    Initial Developer.
+
+    3.4. Application of Additional Terms.
+
+    You may not offer or impose any terms on any Covered Software in
+    Source Code form that alters or restricts the applicable version of
+    this License or the recipients' rights hereunder. You may choose to
+    offer, and to charge a fee for, warranty, support, indemnity or
+    liability obligations to one or more recipients of Covered Software.
+    However, you may do so only on Your own behalf, and not on behalf of
+    the Initial Developer or any Contributor. You must make it
+    absolutely clear that any such warranty, support, indemnity or
+    liability obligation is offered by You alone, and You hereby agree
+    to indemnify the Initial Developer and every Contributor for any
+    liability incurred by the Initial Developer or such Contributor as a
+    result of warranty, support, indemnity or liability terms You offer.
+
+    3.5. Distribution of Executable Versions.
+
+    You may distribute the Executable form of the Covered Software under
+    the terms of this License or under the terms of a license of Your
+    choice, which may contain terms different from this License,
+    provided that You are in compliance with the terms of this License
+    and that the license for the Executable form does not attempt to
+    limit or alter the recipient's rights in the Source Code form from
+    the rights set forth in this License. If You distribute the Covered
+    Software in Executable form under a different license, You must make
+    it absolutely clear that any terms which differ from this License
+    are offered by You alone, not by the Initial Developer or
+    Contributor. You hereby agree to indemnify the Initial Developer and
+    every Contributor for any liability incurred by the Initial
+    Developer or such Contributor as a result of any such terms You offer.
+
+    3.6. Larger Works.
+
+    You may create a Larger Work by combining Covered Software with
+    other code not governed by the terms of this License and distribute
+    the Larger Work as a single product. In such a case, You must make
+    sure the requirements of this License are fulfilled for the Covered
+    Software.
+
+4. Versions of the License.
+
+    4.1. New Versions.
+
+    Oracle is the initial license steward and may publish revised and/or
+    new versions of this License from time to time. Each version will be
+    given a distinguishing version number. Except as provided in Section
+    4.3, no one other than the license steward has the right to modify
+    this License.
+
+    4.2. Effect of New Versions.
+
+    You may always continue to use, distribute or otherwise make the
+    Covered Software available under the terms of the version of the
+    License under which You originally received the Covered Software. If
+    the Initial Developer includes a notice in the Original Software
+    prohibiting it from being distributed or otherwise made available
+    under any subsequent version of the License, You must distribute and
+    make the Covered Software available under the terms of the version
+    of the License under which You originally received the Covered
+    Software. Otherwise, You may also choose to use, distribute or
+    otherwise make the Covered Software available under the terms of any
+    subsequent version of the License published by the license steward.
+
+    4.3. Modified Versions.
+
+    When You are an Initial Developer and You want to create a new
+    license for Your Original Software, You may create and use a
+    modified version of this License if You: (a) rename the license and
+    remove any references to the name of the license steward (except to
+    note that the license differs from this License); and (b) otherwise
+    make it clear that the license contains terms which differ from this
+    License.
+
+5. DISCLAIMER OF WARRANTY.
+
+    COVERED SOFTWARE IS PROVIDED UNDER THIS LICENSE ON AN "AS IS" BASIS,
+    WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED,
+    INCLUDING, WITHOUT LIMITATION, WARRANTIES THAT THE COVERED SOFTWARE
+    IS FREE OF DEFECTS, MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE OR
+    NON-INFRINGING. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF
+    THE COVERED SOFTWARE IS WITH YOU. SHOULD ANY COVERED SOFTWARE PROVE
+    DEFECTIVE IN ANY RESPECT, YOU (NOT THE INITIAL DEVELOPER OR ANY
+    OTHER CONTRIBUTOR) ASSUME THE COST OF ANY NECESSARY SERVICING,
+    REPAIR OR CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN
+    ESSENTIAL PART OF THIS LICENSE. NO USE OF ANY COVERED SOFTWARE IS
+    AUTHORIZED HEREUNDER EXCEPT UNDER THIS DISCLAIMER.
+
+6. TERMINATION.
+
+    6.1. This License and the rights granted hereunder will terminate
+    automatically if You fail to comply with terms herein and fail to
+    cure such breach within 30 days of becoming aware of the breach.
+    Provisions which, by their nature, must remain in effect beyond the
+    termination of this License shall survive.
+
+    6.2. If You assert a patent infringement claim (excluding
+    declaratory judgment actions) against Initial Developer or a
+    Contributor (the Initial Developer or Contributor against whom You
+    assert such claim is referred to as "Participant") alleging that the
+    Participant Software (meaning the Contributor Version where the
+    Participant is a Contributor or the Original Software where the
+    Participant is the Initial Developer) directly or indirectly
+    infringes any patent, then any and all rights granted directly or
+    indirectly to You by such Participant, the Initial Developer (if the
+    Initial Developer is not the Participant) and all Contributors under
+    Sections 2.1 and/or 2.2 of this License shall, upon 60 days notice
+    from Participant terminate prospectively and automatically at the
+    expiration of such 60 day notice period, unless if within such 60
+    day period You withdraw Your claim with respect to the Participant
+    Software against such Participant either unilaterally or pursuant to
+    a written agreement with Participant.
+
+    6.3. If You assert a patent infringement claim against Participant
+    alleging that the Participant Software directly or indirectly
+    infringes any patent where such claim is resolved (such as by
+    license or settlement) prior to the initiation of patent
+    infringement litigation, then the reasonable value of the licenses
+    granted by such Participant under Sections 2.1 or 2.2 shall be taken
+    into account in determining the amount or value of any payment or
+    license.
+
+    6.4. In the event of termination under Sections 6.1 or 6.2 above,
+    all end user licenses that have been validly granted by You or any
+    distributor hereunder prior to termination (excluding licenses
+    granted to You by any distributor) shall survive termination.
+
+7. LIMITATION OF LIABILITY.
+
+    UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY, WHETHER TORT
+    (INCLUDING NEGLIGENCE), CONTRACT, OR OTHERWISE, SHALL YOU, THE
+    INITIAL DEVELOPER, ANY OTHER CONTRIBUTOR, OR ANY DISTRIBUTOR OF
+    COVERED SOFTWARE, OR ANY SUPPLIER OF ANY OF SUCH PARTIES, BE LIABLE
+    TO ANY PERSON FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR
+    CONSEQUENTIAL DAMAGES OF ANY CHARACTER INCLUDING, WITHOUT
+    LIMITATION, DAMAGES FOR LOSS OF GOODWILL, WORK STOPPAGE, COMPUTER
+    FAILURE OR MALFUNCTION, OR ANY AND ALL OTHER COMMERCIAL DAMAGES OR
+    LOSSES, EVEN IF SUCH PARTY SHALL HAVE BEEN INFORMED OF THE
+    POSSIBILITY OF SUCH DAMAGES. THIS LIMITATION OF LIABILITY SHALL NOT
+    APPLY TO LIABILITY FOR DEATH OR PERSONAL INJURY RESULTING FROM SUCH
+    PARTY'S NEGLIGENCE TO THE EXTENT APPLICABLE LAW PROHIBITS SUCH
+    LIMITATION. SOME JURISDICTIONS DO NOT ALLOW THE EXCLUSION OR
+    LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THIS EXCLUSION
+    AND LIMITATION MAY NOT APPLY TO YOU.
+
+8. U.S. GOVERNMENT END USERS.
+
+    The Covered Software is a "commercial item," as that term is defined
+    in 48 C.F.R. 2.101 (Oct. 1995), consisting of "commercial computer
+    software" (as that term is defined at 48 C.F.R. §
+    252.227-7014(a)(1)) and "commercial computer software documentation"
+    as such terms are used in 48 C.F.R. 12.212 (Sept. 1995). Consistent
+    with 48 C.F.R. 12.212 and 48 C.F.R. 227.7202-1 through 227.7202-4
+    (June 1995), all U.S. Government End Users acquire Covered Software
+    with only those rights set forth herein. This U.S. Government Rights
+    clause is in lieu of, and supersedes, any other FAR, DFAR, or other
+    clause or provision that addresses Government rights in computer
+    software under this License.
+
+9. MISCELLANEOUS.
+
+    This License represents the complete agreement concerning subject
+    matter hereof. If any provision of this License is held to be
+    unenforceable, such provision shall be reformed only to the extent
+    necessary to make it enforceable. This License shall be governed by
+    the law of the jurisdiction specified in a notice contained within
+    the Original Software (except to the extent applicable law, if any,
+    provides otherwise), excluding such jurisdiction's conflict-of-law
+    provisions. Any litigation relating to this License shall be subject
+    to the jurisdiction of the courts located in the jurisdiction and
+    venue specified in a notice contained within the Original Software,
+    with the losing party responsible for costs, including, without
+    limitation, court costs and reasonable attorneys' fees and expenses.
+    The application of the United Nations Convention on Contracts for
+    the International Sale of Goods is expressly excluded. Any law or
+    regulation which provides that the language of a contract shall be
+    construed against the drafter shall not apply to this License. You
+    agree that You alone are responsible for compliance with the United
+    States export administration regulations (and the export control
+    laws and regulation of any other countries) when You use, distribute
+    or otherwise make available any Covered Software.
+
+10. RESPONSIBILITY FOR CLAIMS.
+
+    As between Initial Developer and the Contributors, each party is
+    responsible for claims and damages arising, directly or indirectly,
+    out of its utilization of rights under this License and You agree to
+    work with Initial Developer and Contributors to distribute such
+    responsibility on an equitable basis. Nothing herein is intended or
+    shall be deemed to constitute any admission of liability.
+
+------------------------------------------------------------------------
+
+NOTICE PURSUANT TO SECTION 9 OF THE COMMON DEVELOPMENT AND DISTRIBUTION
+LICENSE (CDDL)
+
+The code released under the CDDL shall be governed by the laws of the
+State of California (excluding conflict-of-law provisions). Any
+litigation relating to this License shall be subject to the jurisdiction
+of the Federal Courts of the Northern District of California and the
+state courts of the State of California, with venue lying in Santa Clara
+County, California.
+
+
+
+  The GNU General Public License (GPL) Version 2, June 1991
+
+Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+51 Franklin Street, Fifth Floor
+Boston, MA 02110-1335
+USA
+
+Everyone is permitted to copy and distribute verbatim copies
+of this license document, but changing it is not allowed.
+
+Preamble
+
+The licenses for most software are designed to take away your freedom to
+share and change it. By contrast, the GNU General Public License is
+intended to guarantee your freedom to share and change free software--to
+make sure the software is free for all its users. This General Public
+License applies to most of the Free Software Foundation's software and
+to any other program whose authors commit to using it. (Some other Free
+Software Foundation software is covered by the GNU Library General
+Public License instead.) You can apply it to your programs, too.
+
+When we speak of free software, we are referring to freedom, not price.
+Our General Public Licenses are designed to make sure that you have the
+freedom to distribute copies of free software (and charge for this
+service if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs; and that you know you can do these things.
+
+To protect your rights, we need to make restrictions that forbid anyone
+to deny you these rights or to ask you to surrender the rights. These
+restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+For example, if you distribute copies of such a program, whether gratis
+or for a fee, you must give the recipients all the rights that you have.
+You must make sure that they, too, receive or can get the source code.
+And you must show them these terms so they know their rights.
+
+We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software. If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+Finally, any free program is threatened constantly by software patents.
+We wish to avoid the danger that redistributors of a free program will
+individually obtain patent licenses, in effect making the program
+proprietary. To prevent this, we have made it clear that any patent must
+be licensed for everyone's free use or not licensed at all.
+
+The precise terms and conditions for copying, distribution and
+modification follow.
+
+TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+0. This License applies to any program or other work which contains a
+notice placed by the copyright holder saying it may be distributed under
+the terms of this General Public License. The "Program", below, refers
+to any such program or work, and a "work based on the Program" means
+either the Program or any derivative work under copyright law: that is
+to say, a work containing the Program or a portion of it, either
+verbatim or with modifications and/or translated into another language.
+(Hereinafter, translation is included without limitation in the term
+"modification".) Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope. The act of running
+the Program is not restricted, and the output from the Program is
+covered only if its contents constitute a work based on the Program
+(independent of having been made by running the Program). Whether that
+is true depends on what the Program does.
+
+1. You may copy and distribute verbatim copies of the Program's source
+code as you receive it, in any medium, provided that you conspicuously
+and appropriately publish on each copy an appropriate copyright notice
+and disclaimer of warranty; keep intact all the notices that refer to
+this License and to the absence of any warranty; and give any other
+recipients of the Program a copy of this License along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+2. You may modify your copy or copies of the Program or any portion of
+it, thus forming a work based on the Program, and copy and distribute
+such modifications or work under the terms of Section 1 above, provided
+that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any part
+    thereof, to be licensed as a whole at no charge to all third parties
+    under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a notice
+    that there is no warranty (or else, saying that you provide a
+    warranty) and that users may redistribute the program under these
+    conditions, and telling the user how to view a copy of this License.
+    (Exception: if the Program itself is interactive but does not
+    normally print such an announcement, your work based on the Program
+    is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole. If
+identifiable sections of that work are not derived from the Program, and
+can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works. But when you
+distribute the same sections as part of a whole which is a work based on
+the Program, the distribution of the whole must be on the terms of this
+License, whose permissions for other licensees extend to the entire
+whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of a
+storage or distribution medium does not bring the other work under the
+scope of this License.
+
+3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections 1
+    and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your cost
+    of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer to
+    distribute corresponding source code. (This alternative is allowed
+    only for noncommercial distribution and only if you received the
+    program in object code or executable form with such an offer, in
+    accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it. For an executable work, complete source code
+means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to control
+compilation and installation of the executable. However, as a special
+exception, the source code distributed need not include anything that is
+normally distributed (in either source or binary form) with the major
+components (compiler, kernel, and so on) of the operating system on
+which the executable runs, unless that component itself accompanies the
+executable.
+
+If distribution of executable or object code is made by offering access
+to copy from a designated place, then offering equivalent access to copy
+the source code from the same place counts as distribution of the source
+code, even though third parties are not compelled to copy the source
+along with the object code.
+
+4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License. Any attempt otherwise
+to copy, modify, sublicense or distribute the Program is void, and will
+automatically terminate your rights under this License. However, parties
+who have received copies, or rights, from you under this License will
+not have their licenses terminated so long as such parties remain in
+full compliance.
+
+5. You are not required to accept this License, since you have not
+signed it. However, nothing else grants you permission to modify or
+distribute the Program or its derivative works. These actions are
+prohibited by law if you do not accept this License. Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and all
+its terms and conditions for copying, distributing or modifying the
+Program or works based on it.
+
+6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions. You may not impose any further restrictions
+on the recipients' exercise of the rights granted herein. You are not
+responsible for enforcing compliance by third parties to this License.
+
+7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot distribute
+so as to satisfy simultaneously your obligations under this License and
+any other pertinent obligations, then as a consequence you may not
+distribute the Program at all. For example, if a patent license would
+not permit royalty-free redistribution of the Program by all those who
+receive copies directly or indirectly through you, then the only way you
+could satisfy both it and this License would be to refrain entirely from
+distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is implemented
+by public license practices. Many people have made generous
+contributions to the wide range of software distributed through that
+system in reliance on consistent application of that system; it is up to
+the author/donor to decide if he or she is willing to distribute
+software through any other system and a licensee cannot impose that choice.
+
+This section is intended to make thoroughly clear what is believed to be
+a consequence of the rest of this License.
+
+8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License may
+add an explicit geographical distribution limitation excluding those
+countries, so that distribution is permitted only in or among countries
+not thus excluded. In such case, this License incorporates the
+limitation as if written in the body of this License.
+
+9. The Free Software Foundation may publish revised and/or new
+versions of the General Public License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and
+conditions either of that version or of any later version published by
+the Free Software Foundation. If the Program does not specify a version
+number of this License, you may choose any version ever published by the
+Free Software Foundation.
+
+10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the
+author to ask for permission. For software which is copyrighted by the
+Free Software Foundation, write to the Free Software Foundation; we
+sometimes make exceptions for this. Our decision will be guided by the
+two goals of preserving the free status of all derivatives of our free
+software and of promoting the sharing and reuse of software generally.
+
+NO WARRANTY
+
+11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO
+WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
+EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
+OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND,
+EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE
+ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH
+YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL
+NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
+WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
+AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR
+DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL
+DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM
+(INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED
+INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF
+THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR
+OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+END OF TERMS AND CONDITIONS
+
+How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+To do so, attach the following notices to the program. It is safest to
+attach them to the start of each source file to most effectively convey
+the exclusion of warranty; and each file should have at least the
+"copyright" line and a pointer to where the full notice is found.
+
+    One line to give the program's name and a brief idea of what it does.
+    Copyright (C) <year> <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful, but
+    WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+    General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type
+    `show w'. This is free software, and you are welcome to redistribute
+    it under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the
+appropriate parts of the General Public License. Of course, the commands
+you use may be called something other than `show w' and `show c'; they
+could even be mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. Here is a sample; alter the names:
+
+    Yoyodyne, Inc., hereby disclaims all copyright interest in the
+    program `Gnomovision' (which makes passes at compilers) written by
+    James Hacker.
+
+    signature of Ty Coon, 1 April 1989
+    Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications
+with the library. If this is what you want to do, use the GNU Library
+General Public License instead of this License.
+
+#
+
+Certain source files distributed by Oracle America, Inc. and/or its
+affiliates are subject to the following clarification and special
+exception to the GPLv2, based on the GNU Project exception for its
+Classpath libraries, known as the GNU Classpath Exception, but only
+where Oracle has expressly included in the particular source file's
+header the words "Oracle designates this particular file as subject to
+the "Classpath" exception as provided by Oracle in the LICENSE file
+that accompanied this code."
+
+You should also note that Oracle includes multiple, independent
+programs in this software package. Some of those programs are provided
+under licenses deemed incompatible with the GPLv2 by the Free Software
+Foundation and others.  For example, the package includes programs
+licensed under the Apache License, Version 2.0.  Such programs are
+licensed to you under their original licenses.
+
+Oracle facilitates your further distribution of this package by adding
+the Classpath Exception to the necessary parts of its GPLv2 code, which
+permits you to use that code in combination with other independent
+modules not licensed under the GPLv2.  However, note that this would
+not permit you to commingle code under an incompatible license with
+Oracle's GPLv2 licensed code by, for example, cutting and pasting such
+code into a file also containing Oracle's GPLv2 licensed code and then
+distributing the result.  Additionally, if you were to remove the
+Classpath Exception from any of the files to which it applies and
+distribute the result, you would likely be required to license some or
+all of the other code in that distribution under the GPLv2 as well, and
+since the GPLv2 is incompatible with the license terms of some items
+included in the distribution by Oracle, removing the Classpath
+Exception could therefore effectively compromise your ability to
+further distribute the package.
+
+Proceed with caution and we recommend that you obtain the advice of a
+lawyer skilled in open source matters before removing the Classpath
+Exception or making modifications to this package which may
+subsequently be redistributed and/or involve the use of third party
+software.
+
+CLASSPATH EXCEPTION
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License version 2 cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from or
+based on this library.  If you modify this library, you may extend this
+exception to your version of the library, but you are not obligated to
+do so.  If you do not wish to do so, delete this exception statement
+from your version.
+
diff --git a/oas-validator/distribution/src/release/licenses/LICENSE-cddl-v10 b/oas-validator/distribution/src/release/licenses/LICENSE-cddl-v10
new file mode 100755
index 0000000..46164de
--- /dev/null
+++ b/oas-validator/distribution/src/release/licenses/LICENSE-cddl-v10
@@ -0,0 +1,132 @@
+COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL) Version 1.0
+
+1. Definitions.
+
+1.1. "Contributor" means each individual or entity that creates or contributes to the creation of Modifications.
+
+1.2. "Contributor Version" means the combination of the Original Software, prior Modifications used by a Contributor (if any), and the Modifications made by that particular Contributor.
+
+1.3. "Covered Software" means (a) the Original Software, or (b) Modifications, or (c) the combination of files containing Original Software with files containing Modifications, in each case including portions thereof.
+
+1.4. "Executable" means the Covered Software in any form other than Source Code.
+
+1.5. "Initial Developer" means the individual or entity that first makes Original Software available under this License.
+
+1.6. "Larger Work" means a work which combines Covered Software or portions thereof with code not governed by the terms of this License.
+
+1.7. "License" means this document.
+
+1.8. "Licensable" means having the right to grant, to the maximum extent possible, whether at the time of the initial grant or subsequently acquired, any and all of the rights conveyed herein.
+
+1.9. "Modifications" means the Source Code and Executable form of any of the following:
+
+A. Any file that results from an addition to, deletion from or modification of the contents of a file containing Original Software or previous Modifications;
+
+B. Any new file that contains any part of the Original Software or previous Modification; or
+
+C. Any new file that is contributed or otherwise made available under the terms of this License.
+
+1.10. "Original Software" means the Source Code and Executable form of computer software code that is originally released under this License.
+
+1.11. "Patent Claims" means any patent claim(s), now owned or hereafter acquired, including without limitation, method, process, and apparatus claims, in any patent Licensable by grantor.
+
+1.12. "Source Code" means (a) the common form of computer software code in which modifications are made and (b) associated documentation included in or with such code.
+
+1.13. "You" (or "Your") means an individual or a legal entity exercising rights under, and complying with all of the terms of, this License. For legal entities, "You" includes any entity which controls, is controlled by, or is under common control with You. For purposes of this definition, "control" means (a) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (b) ownership of more than fifty percent (50%) of the outstanding shares or beneficial ownership of such entity.
+
+2. License Grants.
+
+2.1. The Initial Developer Grant.
+
+Conditioned upon Your compliance with Section 3.1 below and subject to third party intellectual property claims, the Initial Developer hereby grants You a world-wide, royalty-free, non-exclusive license:
+
+(a) under intellectual property rights (other than patent or trademark) Licensable by Initial Developer, to use, reproduce, modify, display, perform, sublicense and distribute the Original Software (or portions thereof), with or without Modifications, and/or as part of a Larger Work; and
+
+(b) under Patent Claims infringed by the making, using or selling of Original Software, to make, have made, use, practice, sell, and offer for sale, and/or otherwise dispose of the Original Software (or portions thereof).
+
+(c) The licenses granted in Sections 2.1(a) and (b) are effective on the date Initial Developer first distributes or otherwise makes the Original Software available to a third party under the terms of this License.
+
+(d) Notwithstanding Section 2.1(b) above, no patent license is granted: (1) for code that You delete from the Original Software, or (2) for infringements caused by: (i) the modification of the Original Software, or (ii) the combination of the Original Software with other software or devices.
+
+2.2. Contributor Grant.
+
+Conditioned upon Your compliance with Section 3.1 below and
+subject to third party intellectual property claims, each
+Contributor hereby grants You a world-wide, royalty-free,
+non-exclusive license:
+
+(a) under intellectual property rights (other than patent or trademark) Licensable by Contributor to use, reproduce, modify, display, perform, sublicense and distribute the Modifications created by such Contributor (or portions thereof), either on an unmodified basis, with other Modifications, as Covered Software and/or as part of a Larger Work; and
+
+(b) under Patent Claims infringed by the making, using, or selling of Modifications made by that Contributor either alone and/or in combination with its Contributor Version (or portions of such combination), to make, use, sell, offer for sale, have made, and/or otherwise dispose of: (1) Modifications made by that Contributor (or portions thereof); and (2) the combination of Modifications made by that Contributor with its Contributor Version (or portions of such combination).
+
+(c) The licenses granted in Sections 2.2(a) and 2.2(b) are effective on the date Contributor first distributes or otherwise makes the Modifications available to a third party.
+(d) Notwithstanding Section 2.2(b) above, no patent license is granted: (1) for any code that Contributor has deleted from the Contributor Version; (2) for infringements caused by: (i) third party modifications of Contributor Version, or (ii) the combination of Modifications made by that Contributor with other software (except as part of the Contributor Version) or other devices; or (3) under Patent Claims infringed by Covered Software in the absence of Modifications made by that Contributor.
+
+3. Distribution Obligations.
+
+3.1. Availability of Source Code.
+
+Any Covered Software that You distribute or otherwise make available in Executable form must also be made available in Source Code form and that Source Code form must be distributed only under the terms of this License. You must include a copy of this License with every copy of the Source Code form of the Covered Software You distribute or otherwise make available. You must inform recipients of any such Covered Software in Executable form as to how they can obtain such Covered Software in Source Code form in a reasonable manner on or through a medium customarily used for software exchange.
+
+3.2. Modifications.
+
+The Modifications that You create or to which You contribute are governed by the terms of this License. You represent that You believe Your Modifications are Your original creation(s) and/or You have sufficient rights to grant the rights conveyed by this License.
+
+3.3. Required Notices.
+
+You must include a notice in each of Your Modifications that identifies You as the Contributor of the Modification. You may not remove or alter any copyright, patent or trademark notices contained within the Covered Software, or any notices of licensing or any descriptive text giving attribution to any Contributor or the Initial Developer.
+
+3.4. Application of Additional Terms.
+
+You may not offer or impose any terms on any Covered Software in Source Code form that alters or restricts the applicable version of this License or the recipients' rights hereunder. You may choose to offer, and to charge a fee for, warranty, support, indemnity or liability obligations to one or more recipients of Covered Software. However, you may do so only on Your own behalf, and not on behalf of the Initial Developer or any Contributor. You must make it absolutely clear that any such warranty, support, indemnity or liability obligation is offered by You alone, and You hereby agree to indemnify the Initial Developer and every Contributor for any liability incurred by the Initial Developer or such Contributor as a result of warranty, support, indemnity or liability terms You offer.
+
+3.5. Distribution of Executable Versions.
+
+You may distribute the Executable form of the Covered Software under the terms of this License or under the terms of a license of Your choice, which may contain terms different from this License, provided that You are in compliance with the terms of this License and that the license for the Executable form does not attempt to limit or alter the recipient's rights in the Source Code form from the rights set forth in this License. If You distribute the Covered Software in Executable form under a different license, You must make it absolutely clear that any terms which differ from this License are offered by You alone, not by the Initial Developer or Contributor. You hereby agree to indemnify the Initial Developer and every Contributor for any liability incurred by the Initial Developer or such Contributor as a result of any such terms You offer.
+
+3.6. Larger Works.
+
+You may create a Larger Work by combining Covered Software with other code not governed by the terms of this License and distribute the Larger Work as a single product. In such a case, You must make sure the requirements of this License are fulfilled for the Covered Software.
+
+4. Versions of the License.
+
+4.1. New Versions.
+
+Sun Microsystems, Inc. is the initial license steward and may publish revised and/or new versions of this License from time to time. Each version will be given a distinguishing version number. Except as provided in Section 4.3, no one other than the license steward has the right to modify this License.
+
+4.2. Effect of New Versions.
+
+You may always continue to use, distribute or otherwise make the Covered Software available under the terms of the version of the License under which You originally received the Covered Software. If the Initial Developer includes a notice in the Original Software prohibiting it from being distributed or otherwise made available under any subsequent version of the License, You must distribute and make the Covered Software available under the terms of the version of the License under which You originally received the Covered Software. Otherwise, You may also choose to use, distribute or otherwise make the Covered Software available under the terms of any subsequent version of the License published by the license steward.
+
+4.3. Modified Versions.
+
+When You are an Initial Developer and You want to create a new license for Your Original Software, You may create and use a modified version of this License if You: (a) rename the license and remove any references to the name of the license steward (except to note that the license differs from this License); and (b) otherwise make it clear that the license contains terms which differ from this License.
+
+5. DISCLAIMER OF WARRANTY.
+
+COVERED SOFTWARE IS PROVIDED UNDER THIS LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES THAT THE COVERED SOFTWARE IS FREE OF DEFECTS, MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE OR NON-INFRINGING. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE COVERED SOFTWARE IS WITH YOU. SHOULD ANY COVERED SOFTWARE PROVE DEFECTIVE IN ANY RESPECT, YOU (NOT THE INITIAL DEVELOPER OR ANY OTHER CONTRIBUTOR) ASSUME THE COST OF ANY NECESSARY SERVICING, REPAIR OR CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE. NO USE OF ANY COVERED SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER THIS DISCLAIMER.
+
+6. TERMINATION.
+
+6.1. This License and the rights granted hereunder will terminate automatically if You fail to comply with terms herein and fail to cure such breach within 30 days of becoming aware of the breach. Provisions which, by their nature, must remain in effect beyond the termination of this License shall survive.
+
+6.2. If You assert a patent infringement claim (excluding declaratory judgment actions) against Initial Developer or a Contributor (the Initial Developer or Contributor against whom You assert such claim is referred to as "Participant") alleging that the Participant Software (meaning the Contributor Version where the Participant is a Contributor or the Original Software where the Participant is the Initial Developer) directly or indirectly infringes any patent, then any and all rights granted directly or indirectly to You by such Participant, the Initial Developer (if the Initial Developer is not the Participant) and all Contributors under Sections 2.1 and/or 2.2 of this License shall, upon 60 days notice from Participant terminate prospectively and automatically at the expiration of such 60 day notice period, unless if within such 60 day period You withdraw Your claim with respect to the Participant Software against such Participant either unilaterally or pursuant to a written agreement with Participant.
+
+6.3. In the event of termination under Sections 6.1 or 6.2 above, all end user licenses that have been validly granted by You or any distributor hereunder prior to termination (excluding licenses granted to You by any distributor) shall survive termination.
+
+7. LIMITATION OF LIABILITY.
+
+UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY, WHETHER TORT (INCLUDING NEGLIGENCE), CONTRACT, OR OTHERWISE, SHALL YOU, THE INITIAL DEVELOPER, ANY OTHER CONTRIBUTOR, OR ANY DISTRIBUTOR OF COVERED SOFTWARE, OR ANY SUPPLIER OF ANY OF SUCH PARTIES, BE LIABLE TO ANY PERSON FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OF ANY CHARACTER INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOST PROFITS, LOSS OF GOODWILL, WORK STOPPAGE, COMPUTER FAILURE OR MALFUNCTION, OR ANY AND ALL OTHER COMMERCIAL DAMAGES OR LOSSES, EVEN IF SUCH PARTY SHALL HAVE BEEN INFORMED OF THE POSSIBILITY OF SUCH DAMAGES. THIS LIMITATION OF LIABILITY SHALL NOT APPLY TO LIABILITY FOR DEATH OR PERSONAL INJURY RESULTING FROM SUCH PARTY'S NEGLIGENCE TO THE EXTENT APPLICABLE LAW PROHIBITS SUCH LIMITATION. SOME JURISDICTIONS DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THIS EXCLUSION AND LIMITATION MAY NOT APPLY TO YOU.
+
+8. U.S. GOVERNMENT END USERS.
+
+The Covered Software is a "commercial item," as that term is defined in 48 C.F.R. 2.101 (Oct. 1995), consisting of "commercial computer software" (as that term is defined at 48 C.F.R. ¤ 252.227-7014(a)(1)) and "commercial computer software documentation" as such terms are used in 48 C.F.R. 12.212 (Sept. 1995). Consistent with 48 C.F.R. 12.212 and 48 C.F.R. 227.7202-1 through 227.7202-4 (June 1995), all U.S. Government End Users acquire Covered Software with only those rights set forth herein. This U.S. Government Rights clause is in lieu of, and supersedes, any other FAR, DFAR, or other clause or provision that addresses Government rights in computer software under this License.
+
+9. MISCELLANEOUS.
+
+This License represents the complete agreement concerning subject matter hereof. If any provision of this License is held to be unenforceable, such provision shall be reformed only to the extent necessary to make it enforceable. This License shall be governed by the law of the jurisdiction specified in a notice contained within the Original Software (except to the extent applicable law, if any, provides otherwise), excluding such jurisdiction's conflict-of-law provisions. Any litigation relating to this License shall be subject to the jurisdiction of the courts located in the jurisdiction and venue specified in a notice contained within the Original Software, with the losing party responsible for costs, including, without limitation, court costs and reasonable attorneys' fees and expenses. The application of the United Nations Convention on Contracts for the International Sale of Goods is expressly excluded. Any law or regulation which provides that the language of a contract shall be construed against the drafter shall not apply to this License. You agree that You alone are responsible for compliance with the United States export administration regulations (and the export control laws and regulation of any other countries) when You use, distribute or otherwise make available any Covered Software.
+
+10. RESPONSIBILITY FOR CLAIMS.
+
+As between Initial Developer and the Contributors, each party is responsible for claims and damages arising, directly or indirectly, out of its utilization of rights under this License and You agree to work with Initial Developer and Contributors to distribute such responsibility on an equitable basis. Nothing herein is intended or shall be deemed to constitute any admission of liability.
+
diff --git a/oas-validator/distribution/src/release/licenses/LICENSE-epl-v10 b/oas-validator/distribution/src/release/licenses/LICENSE-epl-v10
new file mode 100755
index 0000000..b0476ee
--- /dev/null
+++ b/oas-validator/distribution/src/release/licenses/LICENSE-epl-v10
@@ -0,0 +1,86 @@
+Eclipse Public License - v 1.0
+THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS ECLIPSE PUBLIC LICENSE ("AGREEMENT"). ANY USE, REPRODUCTION OR DISTRIBUTION OF THE PROGRAM CONSTITUTES RECIPIENT'S ACCEPTANCE OF THIS AGREEMENT.
+
+1. DEFINITIONS
+
+"Contribution" means:
+
+a) in the case of the initial Contributor, the initial code and documentation distributed under this Agreement, and
+
+b) in the case of each subsequent Contributor:
+
+i) changes to the Program, and
+
+ii) additions to the Program;
+
+where such changes and/or additions to the Program originate from and are distributed by that particular Contributor. A Contribution 'originates' from a Contributor if it was added to the Program by such Contributor itself or anyone acting on such Contributor's behalf. Contributions do not include additions to the Program which: (i) are separate modules of software distributed in conjunction with the Program under their own license agreement, and (ii) are not derivative works of the Program.
+
+"Contributor" means any person or entity that distributes the Program.
+
+"Licensed Patents" mean patent claims licensable by a Contributor which are necessarily infringed by the use or sale of its Contribution alone or when combined with the Program.
+
+"Program" means the Contributions distributed in accordance with this Agreement.
+
+"Recipient" means anyone who receives the Program under this Agreement, including all Contributors.
+
+2. GRANT OF RIGHTS
+
+a) Subject to the terms of this Agreement, each Contributor hereby grants Recipient a non-exclusive, worldwide, royalty-free copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, distribute and sublicense the Contribution of such Contributor, if any, and such derivative works, in source code and object code form.
+
+b) Subject to the terms of this Agreement, each Contributor hereby grants Recipient a non-exclusive, worldwide, royalty-free patent license under Licensed Patents to make, use, sell, offer to sell, import and otherwise transfer the Contribution of such Contributor, if any, in source code and object code form. This patent license shall apply to the combination of the Contribution and the Program if, at the time the Contribution is added by the Contributor, such addition of the Contribution causes such combination to be covered by the Licensed Patents. The patent license shall not apply to any other combinations which include the Contribution. No hardware per se is licensed hereunder.
+
+c) Recipient understands that although each Contributor grants the licenses to its Contributions set forth herein, no assurances are provided by any Contributor that the Program does not infringe the patent or other intellectual property rights of any other entity. Each Contributor disclaims any liability to Recipient for claims brought by any other entity based on infringement of intellectual property rights or otherwise. As a condition to exercising the rights and licenses granted hereunder, each Recipient hereby assumes sole responsibility to secure any other intellectual property rights needed, if any. For example, if a third party patent license is required to allow Recipient to distribute the Program, it is Recipient's responsibility to acquire that license before distributing the Program.
+
+d) Each Contributor represents that to its knowledge it has sufficient copyright rights in its Contribution, if any, to grant the copyright license set forth in this Agreement.
+
+3. REQUIREMENTS
+
+A Contributor may choose to distribute the Program in object code form under its own license agreement, provided that:
+
+a) it complies with the terms and conditions of this Agreement; and
+
+b) its license agreement:
+
+i) effectively disclaims on behalf of all Contributors all warranties and conditions, express and implied, including warranties or conditions of title and non-infringement, and implied warranties or conditions of merchantability and fitness for a particular purpose;
+
+ii) effectively excludes on behalf of all Contributors all liability for damages, including direct, indirect, special, incidental and consequential damages, such as lost profits;
+
+iii) states that any provisions which differ from this Agreement are offered by that Contributor alone and not by any other party; and
+
+iv) states that source code for the Program is available from such Contributor, and informs licensees how to obtain it in a reasonable manner on or through a medium customarily used for software exchange.
+
+When the Program is made available in source code form:
+
+a) it must be made available under this Agreement; and
+
+b) a copy of this Agreement must be included with each copy of the Program.
+
+Contributors may not remove or alter any copyright notices contained within the Program.
+
+Each Contributor must identify itself as the originator of its Contribution, if any, in a manner that reasonably allows subsequent Recipients to identify the originator of the Contribution.
+
+4. COMMERCIAL DISTRIBUTION
+
+Commercial distributors of software may accept certain responsibilities with respect to end users, business partners and the like. While this license is intended to facilitate the commercial use of the Program, the Contributor who includes the Program in a commercial product offering should do so in a manner which does not create potential liability for other Contributors. Therefore, if a Contributor includes the Program in a commercial product offering, such Contributor ("Commercial Contributor") hereby agrees to defend and indemnify every other Contributor ("Indemnified Contributor") against any losses, damages and costs (collectively "Losses") arising from claims, lawsuits and other legal actions brought by a third party against the Indemnified Contributor to the extent caused by the acts or omissions of such Commercial Contributor in connection with its distribution of the Program in a commercial product offering. The obligations in this section do not apply to any claims or Losses relating to any actual or alleged intellectual property infringement. In order to qualify, an Indemnified Contributor must: a) promptly notify the Commercial Contributor in writing of such claim, and b) allow the Commercial Contributor to control, and cooperate with the Commercial Contributor in, the defense and any related settlement negotiations. The Indemnified Contributor may participate in any such claim at its own expense.
+
+For example, a Contributor might include the Program in a commercial product offering, Product X. That Contributor is then a Commercial Contributor. If that Commercial Contributor then makes performance claims, or offers warranties related to Product X, those performance claims and warranties are such Commercial Contributor's responsibility alone. Under this section, the Commercial Contributor would have to defend claims against the other Contributors related to those performance claims and warranties, and if a court requires any other Contributor to pay any damages as a result, the Commercial Contributor must pay those damages.
+
+5. NO WARRANTY
+
+EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is solely responsible for determining the appropriateness of using and distributing the Program and assumes all risks associated with its exercise of rights under this Agreement , including but not limited to the risks and costs of program errors, compliance with applicable laws, damage to or loss of data, programs or equipment, and unavailability or interruption of operations.
+
+6. DISCLAIMER OF LIABILITY
+
+EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+7. GENERAL
+
+If any provision of this Agreement is invalid or unenforceable under applicable law, it shall not affect the validity or enforceability of the remainder of the terms of this Agreement, and without further action by the parties hereto, such provision shall be reformed to the minimum extent necessary to make such provision valid and enforceable.
+
+If Recipient institutes patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Program itself (excluding combinations of the Program with other software or hardware) infringes such Recipient's patent(s), then such Recipient's rights granted under Section 2(b) shall terminate as of the date such litigation is filed.
+
+All Recipient's rights under this Agreement shall terminate if it fails to comply with any of the material terms or conditions of this Agreement and does not cure such failure in a reasonable period of time after becoming aware of such noncompliance. If all Recipient's rights under this Agreement terminate, Recipient agrees to cease use and distribution of the Program as soon as reasonably practicable. However, Recipient's obligations under this Agreement and any licenses granted by Recipient relating to the Program shall continue and survive.
+
+Everyone is permitted to copy and distribute copies of this Agreement, but in order to avoid inconsistency the Agreement is copyrighted and may only be modified in the following manner. The Agreement Steward reserves the right to publish new versions (including revisions) of this Agreement from time to time. No one other than the Agreement Steward has the right to modify this Agreement. The Eclipse Foundation is the initial Agreement Steward. The Eclipse Foundation may assign the responsibility to serve as the Agreement Steward to a suitable separate entity. Each new version of the Agreement will be given a distinguishing version number. The Program (including Contributions) may always be distributed subject to the version of the Agreement under which it was received. In addition, after a new version of the Agreement is published, Contributor may elect to distribute the Program (including its Contributions) under the new version. Except as expressly stated in Sections 2(a) and 2(b) above, Recipient receives no rights or licenses to the intellectual property of any Contributor under this Agreement, whether expressly, by implication, estoppel or otherwise. All rights in the Program not expressly granted under this Agreement are reserved.
+
+This Agreement is governed by the laws of the State of New York and the intellectual property laws of the United States of America. No party to this Agreement will bring a legal action under this Agreement more than one year after the cause of action arose. Each party waives its rights to a jury trial in any resulting litigation.
diff --git a/oas-validator/distribution/src/release/licenses/LICENSE-hamcrest b/oas-validator/distribution/src/release/licenses/LICENSE-hamcrest
new file mode 100755
index 0000000..dcdcc42
--- /dev/null
+++ b/oas-validator/distribution/src/release/licenses/LICENSE-hamcrest
@@ -0,0 +1,27 @@
+BSD License
+
+Copyright (c) 2000-2006, www.hamcrest.org
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+Redistributions of source code must retain the above copyright notice, this list of
+conditions and the following disclaimer. Redistributions in binary form must reproduce
+the above copyright notice, this list of conditions and the following disclaimer in
+the documentation and/or other materials provided with the distribution.
+
+Neither the name of Hamcrest nor the names of its contributors may be used to endorse
+or promote products derived from this software without specific prior written
+permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
+WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGE.
diff --git a/oas-validator/distribution/src/release/licenses/LICENSE-jopt b/oas-validator/distribution/src/release/licenses/LICENSE-jopt
new file mode 100755
index 0000000..7cb505b
--- /dev/null
+++ b/oas-validator/distribution/src/release/licenses/LICENSE-jopt
@@ -0,0 +1,22 @@
+The MIT License
+
+Copyright (c) 2004-2016 Paul R. Holser, Jr.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/oas-validator/distribution/src/release/licenses/LICENSE-lombok b/oas-validator/distribution/src/release/licenses/LICENSE-lombok
new file mode 100755
index 0000000..5da7dbe
--- /dev/null
+++ b/oas-validator/distribution/src/release/licenses/LICENSE-lombok
@@ -0,0 +1,19 @@
+Copyright (C) 2009-2015 The Project Lombok Authors.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/oas-validator/distribution/src/release/licenses/LICENSE-mit b/oas-validator/distribution/src/release/licenses/LICENSE-mit
new file mode 100755
index 0000000..244229e
--- /dev/null
+++ b/oas-validator/distribution/src/release/licenses/LICENSE-mit
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/oas-validator/distribution/src/release/licenses/LICENSE-mockito b/oas-validator/distribution/src/release/licenses/LICENSE-mockito
new file mode 100755
index 0000000..5a311f7
--- /dev/null
+++ b/oas-validator/distribution/src/release/licenses/LICENSE-mockito
@@ -0,0 +1,21 @@
+The MIT License
+
+Copyright (c) 2007 Mockito contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/oas-validator/distribution/src/release/licenses/LICENSE-mpl-v20 b/oas-validator/distribution/src/release/licenses/LICENSE-mpl-v20
new file mode 100755
index 0000000..14e2f77
--- /dev/null
+++ b/oas-validator/distribution/src/release/licenses/LICENSE-mpl-v20
@@ -0,0 +1,373 @@
+Mozilla Public License Version 2.0
+==================================
+
+1. Definitions
+--------------
+
+1.1. "Contributor"
+    means each individual or legal entity that creates, contributes to
+    the creation of, or owns Covered Software.
+
+1.2. "Contributor Version"
+    means the combination of the Contributions of others (if any) used
+    by a Contributor and that particular Contributor's Contribution.
+
+1.3. "Contribution"
+    means Covered Software of a particular Contributor.
+
+1.4. "Covered Software"
+    means Source Code Form to which the initial Contributor has attached
+    the notice in Exhibit A, the Executable Form of such Source Code
+    Form, and Modifications of such Source Code Form, in each case
+    including portions thereof.
+
+1.5. "Incompatible With Secondary Licenses"
+    means
+
+    (a) that the initial Contributor has attached the notice described
+        in Exhibit B to the Covered Software; or
+
+    (b) that the Covered Software was made available under the terms of
+        version 1.1 or earlier of the License, but not also under the
+        terms of a Secondary License.
+
+1.6. "Executable Form"
+    means any form of the work other than Source Code Form.
+
+1.7. "Larger Work"
+    means a work that combines Covered Software with other material, in 
+    a separate file or files, that is not Covered Software.
+
+1.8. "License"
+    means this document.
+
+1.9. "Licensable"
+    means having the right to grant, to the maximum extent possible,
+    whether at the time of the initial grant or subsequently, any and
+    all of the rights conveyed by this License.
+
+1.10. "Modifications"
+    means any of the following:
+
+    (a) any file in Source Code Form that results from an addition to,
+        deletion from, or modification of the contents of Covered
+        Software; or
+
+    (b) any new file in Source Code Form that contains any Covered
+        Software.
+
+1.11. "Patent Claims" of a Contributor
+    means any patent claim(s), including without limitation, method,
+    process, and apparatus claims, in any patent Licensable by such
+    Contributor that would be infringed, but for the grant of the
+    License, by the making, using, selling, offering for sale, having
+    made, import, or transfer of either its Contributions or its
+    Contributor Version.
+
+1.12. "Secondary License"
+    means either the GNU General Public License, Version 2.0, the GNU
+    Lesser General Public License, Version 2.1, the GNU Affero General
+    Public License, Version 3.0, or any later versions of those
+    licenses.
+
+1.13. "Source Code Form"
+    means the form of the work preferred for making modifications.
+
+1.14. "You" (or "Your")
+    means an individual or a legal entity exercising rights under this
+    License. For legal entities, "You" includes any entity that
+    controls, is controlled by, or is under common control with You. For
+    purposes of this definition, "control" means (a) the power, direct
+    or indirect, to cause the direction or management of such entity,
+    whether by contract or otherwise, or (b) ownership of more than
+    fifty percent (50%) of the outstanding shares or beneficial
+    ownership of such entity.
+
+2. License Grants and Conditions
+--------------------------------
+
+2.1. Grants
+
+Each Contributor hereby grants You a world-wide, royalty-free,
+non-exclusive license:
+
+(a) under intellectual property rights (other than patent or trademark)
+    Licensable by such Contributor to use, reproduce, make available,
+    modify, display, perform, distribute, and otherwise exploit its
+    Contributions, either on an unmodified basis, with Modifications, or
+    as part of a Larger Work; and
+
+(b) under Patent Claims of such Contributor to make, use, sell, offer
+    for sale, have made, import, and otherwise transfer either its
+    Contributions or its Contributor Version.
+
+2.2. Effective Date
+
+The licenses granted in Section 2.1 with respect to any Contribution
+become effective for each Contribution on the date the Contributor first
+distributes such Contribution.
+
+2.3. Limitations on Grant Scope
+
+The licenses granted in this Section 2 are the only rights granted under
+this License. No additional rights or licenses will be implied from the
+distribution or licensing of Covered Software under this License.
+Notwithstanding Section 2.1(b) above, no patent license is granted by a
+Contributor:
+
+(a) for any code that a Contributor has removed from Covered Software;
+    or
+
+(b) for infringements caused by: (i) Your and any other third party's
+    modifications of Covered Software, or (ii) the combination of its
+    Contributions with other software (except as part of its Contributor
+    Version); or
+
+(c) under Patent Claims infringed by Covered Software in the absence of
+    its Contributions.
+
+This License does not grant any rights in the trademarks, service marks,
+or logos of any Contributor (except as may be necessary to comply with
+the notice requirements in Section 3.4).
+
+2.4. Subsequent Licenses
+
+No Contributor makes additional grants as a result of Your choice to
+distribute the Covered Software under a subsequent version of this
+License (see Section 10.2) or under the terms of a Secondary License (if
+permitted under the terms of Section 3.3).
+
+2.5. Representation
+
+Each Contributor represents that the Contributor believes its
+Contributions are its original creation(s) or it has sufficient rights
+to grant the rights to its Contributions conveyed by this License.
+
+2.6. Fair Use
+
+This License is not intended to limit any rights You have under
+applicable copyright doctrines of fair use, fair dealing, or other
+equivalents.
+
+2.7. Conditions
+
+Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted
+in Section 2.1.
+
+3. Responsibilities
+-------------------
+
+3.1. Distribution of Source Form
+
+All distribution of Covered Software in Source Code Form, including any
+Modifications that You create or to which You contribute, must be under
+the terms of this License. You must inform recipients that the Source
+Code Form of the Covered Software is governed by the terms of this
+License, and how they can obtain a copy of this License. You may not
+attempt to alter or restrict the recipients' rights in the Source Code
+Form.
+
+3.2. Distribution of Executable Form
+
+If You distribute Covered Software in Executable Form then:
+
+(a) such Covered Software must also be made available in Source Code
+    Form, as described in Section 3.1, and You must inform recipients of
+    the Executable Form how they can obtain a copy of such Source Code
+    Form by reasonable means in a timely manner, at a charge no more
+    than the cost of distribution to the recipient; and
+
+(b) You may distribute such Executable Form under the terms of this
+    License, or sublicense it under different terms, provided that the
+    license for the Executable Form does not attempt to limit or alter
+    the recipients' rights in the Source Code Form under this License.
+
+3.3. Distribution of a Larger Work
+
+You may create and distribute a Larger Work under terms of Your choice,
+provided that You also comply with the requirements of this License for
+the Covered Software. If the Larger Work is a combination of Covered
+Software with a work governed by one or more Secondary Licenses, and the
+Covered Software is not Incompatible With Secondary Licenses, this
+License permits You to additionally distribute such Covered Software
+under the terms of such Secondary License(s), so that the recipient of
+the Larger Work may, at their option, further distribute the Covered
+Software under the terms of either this License or such Secondary
+License(s).
+
+3.4. Notices
+
+You may not remove or alter the substance of any license notices
+(including copyright notices, patent notices, disclaimers of warranty,
+or limitations of liability) contained within the Source Code Form of
+the Covered Software, except that You may alter any license notices to
+the extent required to remedy known factual inaccuracies.
+
+3.5. Application of Additional Terms
+
+You may choose to offer, and to charge a fee for, warranty, support,
+indemnity or liability obligations to one or more recipients of Covered
+Software. However, You may do so only on Your own behalf, and not on
+behalf of any Contributor. You must make it absolutely clear that any
+such warranty, support, indemnity, or liability obligation is offered by
+You alone, and You hereby agree to indemnify every Contributor for any
+liability incurred by such Contributor as a result of warranty, support,
+indemnity or liability terms You offer. You may include additional
+disclaimers of warranty and limitations of liability specific to any
+jurisdiction.
+
+4. Inability to Comply Due to Statute or Regulation
+---------------------------------------------------
+
+If it is impossible for You to comply with any of the terms of this
+License with respect to some or all of the Covered Software due to
+statute, judicial order, or regulation then You must: (a) comply with
+the terms of this License to the maximum extent possible; and (b)
+describe the limitations and the code they affect. Such description must
+be placed in a text file included with all distributions of the Covered
+Software under this License. Except to the extent prohibited by statute
+or regulation, such description must be sufficiently detailed for a
+recipient of ordinary skill to be able to understand it.
+
+5. Termination
+--------------
+
+5.1. The rights granted under this License will terminate automatically
+if You fail to comply with any of its terms. However, if You become
+compliant, then the rights granted under this License from a particular
+Contributor are reinstated (a) provisionally, unless and until such
+Contributor explicitly and finally terminates Your grants, and (b) on an
+ongoing basis, if such Contributor fails to notify You of the
+non-compliance by some reasonable means prior to 60 days after You have
+come back into compliance. Moreover, Your grants from a particular
+Contributor are reinstated on an ongoing basis if such Contributor
+notifies You of the non-compliance by some reasonable means, this is the
+first time You have received notice of non-compliance with this License
+from such Contributor, and You become compliant prior to 30 days after
+Your receipt of the notice.
+
+5.2. If You initiate litigation against any entity by asserting a patent
+infringement claim (excluding declaratory judgment actions,
+counter-claims, and cross-claims) alleging that a Contributor Version
+directly or indirectly infringes any patent, then the rights granted to
+You by any and all Contributors for the Covered Software under Section
+2.1 of this License shall terminate.
+
+5.3. In the event of termination under Sections 5.1 or 5.2 above, all
+end user license agreements (excluding distributors and resellers) which
+have been validly granted by You or Your distributors under this License
+prior to termination shall survive termination.
+
+************************************************************************
+*                                                                      *
+*  6. Disclaimer of Warranty                                           *
+*  -------------------------                                           *
+*                                                                      *
+*  Covered Software is provided under this License on an "as is"       *
+*  basis, without warranty of any kind, either expressed, implied, or  *
+*  statutory, including, without limitation, warranties that the       *
+*  Covered Software is free of defects, merchantable, fit for a        *
+*  particular purpose or non-infringing. The entire risk as to the     *
+*  quality and performance of the Covered Software is with You.        *
+*  Should any Covered Software prove defective in any respect, You     *
+*  (not any Contributor) assume the cost of any necessary servicing,   *
+*  repair, or correction. This disclaimer of warranty constitutes an   *
+*  essential part of this License. No use of any Covered Software is   *
+*  authorized under this License except under this disclaimer.         *
+*                                                                      *
+************************************************************************
+
+************************************************************************
+*                                                                      *
+*  7. Limitation of Liability                                          *
+*  --------------------------                                          *
+*                                                                      *
+*  Under no circumstances and under no legal theory, whether tort      *
+*  (including negligence), contract, or otherwise, shall any           *
+*  Contributor, or anyone who distributes Covered Software as          *
+*  permitted above, be liable to You for any direct, indirect,         *
+*  special, incidental, or consequential damages of any character      *
+*  including, without limitation, damages for lost profits, loss of    *
+*  goodwill, work stoppage, computer failure or malfunction, or any    *
+*  and all other commercial damages or losses, even if such party      *
+*  shall have been informed of the possibility of such damages. This   *
+*  limitation of liability shall not apply to liability for death or   *
+*  personal injury resulting from such party's negligence to the       *
+*  extent applicable law prohibits such limitation. Some               *
+*  jurisdictions do not allow the exclusion or limitation of           *
+*  incidental or consequential damages, so this exclusion and          *
+*  limitation may not apply to You.                                    *
+*                                                                      *
+************************************************************************
+
+8. Litigation
+-------------
+
+Any litigation relating to this License may be brought only in the
+courts of a jurisdiction where the defendant maintains its principal
+place of business and such litigation shall be governed by laws of that
+jurisdiction, without reference to its conflict-of-law provisions.
+Nothing in this Section shall prevent a party's ability to bring
+cross-claims or counter-claims.
+
+9. Miscellaneous
+----------------
+
+This License represents the complete agreement concerning the subject
+matter hereof. If any provision of this License is held to be
+unenforceable, such provision shall be reformed only to the extent
+necessary to make it enforceable. Any law or regulation which provides
+that the language of a contract shall be construed against the drafter
+shall not be used to construe this License against a Contributor.
+
+10. Versions of the License
+---------------------------
+
+10.1. New Versions
+
+Mozilla Foundation is the license steward. Except as provided in Section
+10.3, no one other than the license steward has the right to modify or
+publish new versions of this License. Each version will be given a
+distinguishing version number.
+
+10.2. Effect of New Versions
+
+You may distribute the Covered Software under the terms of the version
+of the License under which You originally received the Covered Software,
+or under the terms of any subsequent version published by the license
+steward.
+
+10.3. Modified Versions
+
+If you create software not governed by this License, and you want to
+create a new license for such software, you may create and use a
+modified version of this License if you rename the license and remove
+any references to the name of the license steward (except to note that
+such modified license differs from this License).
+
+10.4. Distributing Source Code Form that is Incompatible With Secondary
+Licenses
+
+If You choose to distribute Source Code Form that is Incompatible With
+Secondary Licenses under the terms of this version of the License, the
+notice described in Exhibit B of this License must be attached.
+
+Exhibit A - Source Code Form License Notice
+-------------------------------------------
+
+  This Source Code Form is subject to the terms of the Mozilla Public
+  License, v. 2.0. If a copy of the MPL was not distributed with this
+  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+If it is not possible or desirable to put the notice in a particular
+file, then You may include the notice in a location (such as a LICENSE
+file in a relevant directory) where a recipient would be likely to look
+for such a notice.
+
+You may add additional accurate notices of copyright ownership.
+
+Exhibit B - "Incompatible With Secondary Licenses" Notice
+---------------------------------------------------------
+
+  This Source Code Form is "Incompatible With Secondary Licenses", as
+  defined by the Mozilla Public License, v. 2.0.
diff --git a/oas-validator/distribution/src/release/licenses/LICENSE-qos b/oas-validator/distribution/src/release/licenses/LICENSE-qos
new file mode 100755
index 0000000..0c40879
--- /dev/null
+++ b/oas-validator/distribution/src/release/licenses/LICENSE-qos
@@ -0,0 +1,21 @@
+Copyright (c) 2009 QOS.ch
+All rights reserved.
+
+Permission is hereby granted, free  of charge, to any person obtaining
+a  copy  of this  software  and  associated  documentation files  (the
+"Software"), to  deal in  the Software without  restriction, including
+without limitation  the rights to  use, copy, modify,  merge, publish,
+distribute,  sublicense, and/or sell  copies of  the Software,  and to
+permit persons to whom the Software  is furnished to do so, subject to
+the following conditions:
+
+The  above  copyright  notice  and  this permission  notice  shall  be
+included in all copies or substantial portions of the Software.
+
+THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
+EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
+MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/oas-validator/distribution/src/release/licenses/LICENSE-slf4j b/oas-validator/distribution/src/release/licenses/LICENSE-slf4j
new file mode 100755
index 0000000..744377c
--- /dev/null
+++ b/oas-validator/distribution/src/release/licenses/LICENSE-slf4j
@@ -0,0 +1,21 @@
+Copyright (c) 2004-2017 QOS.ch
+All rights reserved.
+
+Permission is hereby granted, free  of charge, to any person obtaining
+a  copy  of this  software  and  associated  documentation files  (the
+"Software"), to  deal in  the Software without  restriction, including
+without limitation  the rights to  use, copy, modify,  merge, publish,
+distribute,  sublicense, and/or sell  copies of  the Software,  and to
+permit persons to whom the Software  is furnished to do so, subject to
+the following conditions:
+
+The  above  copyright  notice  and  this permission  notice  shall  be
+included in all copies or substantial portions of the Software.
+
+THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
+EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
+MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/oas-validator/distribution/src/release/licenses/LICENSE-webjars b/oas-validator/distribution/src/release/licenses/LICENSE-webjars
new file mode 100755
index 0000000..29bdee3
--- /dev/null
+++ b/oas-validator/distribution/src/release/licenses/LICENSE-webjars
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2017 James Ward
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/oas-validator/doc/INSTALLATION.MD b/oas-validator/doc/INSTALLATION.MD
new file mode 100755
index 0000000..6dc6849
--- /dev/null
+++ b/oas-validator/doc/INSTALLATION.MD
@@ -0,0 +1,36 @@
+# INSTALLATION.MD
+
+## Prerequisites
+
+* Java 8
+* Maven
+
+## Building
+
+### Jar
+
+```
+mvn clean package
+```
+
+
+```
+./mvnw clean package
+```
+
+
+## Run
+
+### Maven
+
+```
+mvn clean package spring-boot:run
+```
+
+
+
+### Java
+
+```
+java -jar ./oas-validator-web/target/oas-validator-web-exec.jar
+```
diff --git a/oas-validator/doc/USAGE.MD b/oas-validator/doc/USAGE.MD
new file mode 100755
index 0000000..ffe2a0c
--- /dev/null
+++ b/oas-validator/doc/USAGE.MD
@@ -0,0 +1,62 @@
+# 使用手册
+
+
+
+
+## 访问
+
+访问地址:[http://localhost:8080/](http://localhost:8080/)
+
+
+
+## 工具
+
+### 查看器
+
+敬请期待……
+
+
+
+### 编辑器
+
+敬请期待……
+
+
+
+### 验证器
+
+分为 **合规性验证** 和 **兼容性检查**
+
+#### 合规性验证
+
+对 OpenAPI Spec 文档进行规范验证,对违反规范的错误作出提示。
+
+
+
+##### 操作示例
+
+1. Step 1
+
+   ![](./compliance-1.png)
+
+2. Step 2
+
+   ![](./compliance-2.png)
+
+
+
+#### 兼容性检查
+
+对新旧两个 OpenAPI Spec 文档进行兼容性比较,检查出文档更新过程中出现的无法向下兼容的错误
+
+
+##### 操作示例
+
+1. Step 1
+
+   ![](./compatibility-1.png)
+
+2. Step 2
+
+   ![](./compatibility-2.png)
+
diff --git a/oas-validator/doc/compatibility-1.png b/oas-validator/doc/compatibility-1.png
new file mode 100755
index 0000000..1eecf0b
--- /dev/null
+++ b/oas-validator/doc/compatibility-1.png
Binary files differ
diff --git a/oas-validator/doc/compatibility-2.png b/oas-validator/doc/compatibility-2.png
new file mode 100755
index 0000000..8794faa
--- /dev/null
+++ b/oas-validator/doc/compatibility-2.png
Binary files differ
diff --git a/oas-validator/doc/compliance-1.png b/oas-validator/doc/compliance-1.png
new file mode 100755
index 0000000..3227baf
--- /dev/null
+++ b/oas-validator/doc/compliance-1.png
Binary files differ
diff --git a/oas-validator/doc/compliance-2.png b/oas-validator/doc/compliance-2.png
new file mode 100755
index 0000000..8a32c0c
--- /dev/null
+++ b/oas-validator/doc/compliance-2.png
Binary files differ
diff --git a/oas-validator/mvnw b/oas-validator/mvnw
new file mode 100755
index 0000000..e96ccd5
--- /dev/null
+++ b/oas-validator/mvnw
@@ -0,0 +1,227 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Maven2 Start Up Batch script
+#
+# Required ENV vars:
+# ------------------
+#   JAVA_HOME - location of a JDK home dir
+#
+# Optional ENV vars
+# -----------------
+#   M2_HOME - location of maven2's installed home dir
+#   MAVEN_OPTS - parameters passed to the Java VM when running Maven
+#     e.g. to debug Maven itself, use
+#       set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+#   MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+# ----------------------------------------------------------------------------
+
+if [ -z "$MAVEN_SKIP_RC" ] ; then
+
+  if [ -f /etc/mavenrc ] ; then
+    . /etc/mavenrc
+  fi
+
+  if [ -f "$HOME/.mavenrc" ] ; then
+    . "$HOME/.mavenrc"
+  fi
+
+fi
+
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+mingw=false
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+  MINGW*) mingw=true;;
+  Darwin*) darwin=true
+    # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
+    # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
+    if [ -z "$JAVA_HOME" ]; then
+      if [ -x "/usr/libexec/java_home" ]; then
+        export JAVA_HOME="`/usr/libexec/java_home`"
+      else
+        export JAVA_HOME="/Library/Java/Home"
+      fi
+    fi
+    ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+  if [ -r /etc/gentoo-release ] ; then
+    JAVA_HOME=`java-config --jre-home`
+  fi
+fi
+
+if [ -z "$M2_HOME" ] ; then
+  ## resolve links - $0 may be a link to maven's home
+  PRG="$0"
+
+  # need this for relative symlinks
+  while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+      PRG="$link"
+    else
+      PRG="`dirname "$PRG"`/$link"
+    fi
+  done
+
+  saveddir=`pwd`
+
+  M2_HOME=`dirname "$PRG"`/..
+
+  # make it fully qualified
+  M2_HOME=`cd "$M2_HOME" && pwd`
+
+  cd "$saveddir"
+  # echo Using m2 at $M2_HOME
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --unix "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# For Mingw, ensure paths are in UNIX format before anything is touched
+if $mingw ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME="`(cd "$M2_HOME"; pwd)`"
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
+  # TODO classpath?
+fi
+
+if [ -z "$JAVA_HOME" ]; then
+  javaExecutable="`which javac`"
+  if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
+    # readlink(1) is not available as standard on Solaris 10.
+    readLink=`which readlink`
+    if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
+      if $darwin ; then
+        javaHome="`dirname \"$javaExecutable\"`"
+        javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
+      else
+        javaExecutable="`readlink -f \"$javaExecutable\"`"
+      fi
+      javaHome="`dirname \"$javaExecutable\"`"
+      javaHome=`expr "$javaHome" : '\(.*\)/bin'`
+      JAVA_HOME="$javaHome"
+      export JAVA_HOME
+    fi
+  fi
+fi
+
+if [ -z "$JAVACMD" ] ; then
+  if [ -n "$JAVA_HOME"  ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+    fi
+  else
+    JAVACMD="`which java`"
+  fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+  echo "Error: JAVA_HOME is not defined correctly." >&2
+  echo "  We cannot execute $JAVACMD" >&2
+  exit 1
+fi
+
+if [ -z "$JAVA_HOME" ] ; then
+  echo "Warning: JAVA_HOME environment variable is not set."
+fi
+
+CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
+
+# traverses directory structure from process work directory to filesystem root
+# first directory with .mvn subdirectory is considered project base directory
+find_maven_basedir() {
+
+  if [ -z "$1" ]
+  then
+    echo "Path not specified to find_maven_basedir"
+    return 1
+  fi
+
+  basedir="$1"
+  wdir="$1"
+  while [ "$wdir" != '/' ] ; do
+    if [ -d "$wdir"/.mvn ] ; then
+      basedir=$wdir
+      break
+    fi
+    # workaround for JBEAP-8937 (on Solaris 10/Sparc)
+    if [ -d "${wdir}" ]; then
+      wdir=`cd "$wdir/.."; pwd`
+    fi
+    # end of workaround
+  done
+  echo "${basedir}"
+}
+
+# concatenates all lines of a file
+concat_lines() {
+  if [ -f "$1" ]; then
+    echo "$(tr -s '\n' ' ' < "$1")"
+  fi
+}
+
+BASE_DIR=`find_maven_basedir "$(pwd)"`
+if [ -z "$BASE_DIR" ]; then
+  exit 1;
+fi
+
+export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
+if [ "$MVNW_VERBOSE" = true ]; then
+  echo $MAVEN_PROJECTBASEDIR
+fi
+MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --path --windows "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+  [ -n "$MAVEN_PROJECTBASEDIR" ] &&
+    MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
+fi
+
+WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+exec "$JAVACMD" \
+  $MAVEN_OPTS \
+  -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+  "-Dmaven.home=${M2_HOME}" "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+  ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"
diff --git a/oas-validator/mvnw.cmd b/oas-validator/mvnw.cmd
new file mode 100755
index 0000000..4f0b068
--- /dev/null
+++ b/oas-validator/mvnw.cmd
@@ -0,0 +1,145 @@
+@REM ----------------------------------------------------------------------------

+@REM Licensed to the Apache Software Foundation (ASF) under one

+@REM or more contributor license agreements.  See the NOTICE file

+@REM distributed with this work for additional information

+@REM regarding copyright ownership.  The ASF licenses this file

+@REM to you under the Apache License, Version 2.0 (the

+@REM "License"); you may not use this file except in compliance

+@REM with the License.  You may obtain a copy of the License at

+@REM

+@REM    http://www.apache.org/licenses/LICENSE-2.0

+@REM

+@REM Unless required by applicable law or agreed to in writing,

+@REM software distributed under the License is distributed on an

+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

+@REM KIND, either express or implied.  See the License for the

+@REM specific language governing permissions and limitations

+@REM under the License.

+@REM ----------------------------------------------------------------------------

+

+@REM ----------------------------------------------------------------------------

+@REM Maven2 Start Up Batch script

+@REM

+@REM Required ENV vars:

+@REM JAVA_HOME - location of a JDK home dir

+@REM

+@REM Optional ENV vars

+@REM M2_HOME - location of maven2's installed home dir

+@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands

+@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a key stroke before ending

+@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven

+@REM     e.g. to debug Maven itself, use

+@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000

+@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files

+@REM ----------------------------------------------------------------------------

+

+@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'

+@echo off

+@REM set title of command window

+title %0

+@REM enable echoing my setting MAVEN_BATCH_ECHO to 'on'

+@if "%MAVEN_BATCH_ECHO%" == "on"  echo %MAVEN_BATCH_ECHO%

+

+@REM set %HOME% to equivalent of $HOME

+if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")

+

+@REM Execute a user defined script before this one

+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre

+@REM check for pre script, once with legacy .bat ending and once with .cmd ending

+if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat"

+if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd"

+:skipRcPre

+

+@setlocal

+

+set ERROR_CODE=0

+

+@REM To isolate internal variables from possible post scripts, we use another setlocal

+@setlocal

+

+@REM ==== START VALIDATION ====

+if not "%JAVA_HOME%" == "" goto OkJHome

+

+echo.

+echo Error: JAVA_HOME not found in your environment. >&2

+echo Please set the JAVA_HOME variable in your environment to match the >&2

+echo location of your Java installation. >&2

+echo.

+goto error

+

+:OkJHome

+if exist "%JAVA_HOME%\bin\java.exe" goto init

+

+echo.

+echo Error: JAVA_HOME is set to an invalid directory. >&2

+echo JAVA_HOME = "%JAVA_HOME%" >&2

+echo Please set the JAVA_HOME variable in your environment to match the >&2

+echo location of your Java installation. >&2

+echo.

+goto error

+

+@REM ==== END VALIDATION ====

+

+:init

+

+@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".

+@REM Fallback to current working directory if not found.

+

+set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%

+IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir

+

+set EXEC_DIR=%CD%

+set WDIR=%EXEC_DIR%

+:findBaseDir

+IF EXIST "%WDIR%"\.mvn goto baseDirFound

+cd ..

+IF "%WDIR%"=="%CD%" goto baseDirNotFound

+set WDIR=%CD%

+goto findBaseDir

+

+:baseDirFound

+set MAVEN_PROJECTBASEDIR=%WDIR%

+cd "%EXEC_DIR%"

+goto endDetectBaseDir

+

+:baseDirNotFound

+set MAVEN_PROJECTBASEDIR=%EXEC_DIR%

+cd "%EXEC_DIR%"

+

+:endDetectBaseDir

+

+IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig

+

+@setlocal EnableExtensions EnableDelayedExpansion

+for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a

+@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%

+

+:endReadAdditionalConfig

+

+SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"

+

+set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"

+set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain

+

+%MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %WRAPPER_JAR% "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*

+if ERRORLEVEL 1 goto error

+goto end

+

+:error

+set ERROR_CODE=1

+

+:end

+@endlocal & set ERROR_CODE=%ERROR_CODE%

+

+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost

+@REM check for post script, once with legacy .bat ending and once with .cmd ending

+if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat"

+if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd"

+:skipRcPost

+

+@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'

+if "%MAVEN_BATCH_PAUSE%" == "on" pause

+

+if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE%

+

+exit /B %ERROR_CODE%

diff --git a/oas-validator/oas-validator-compatibility-spring/pom.xml b/oas-validator/oas-validator-compatibility-spring/pom.xml
new file mode 100755
index 0000000..913db0c
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility-spring/pom.xml
@@ -0,0 +1,69 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one or more
+  ~ contributor license agreements.  See the NOTICE file distributed with
+  ~ this work for additional information regarding copyright ownership.
+  ~ The ASF licenses this file to You under the Apache License, Version 2.0
+  ~ (the "License"); you may not use this file except in compliance with
+  ~ the License.  You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.apache.servicecomb.toolkit</groupId>
+    <artifactId>oas-validator-parent</artifactId>
+    <version>0.2.0-SNAPSHOT</version>
+    <relativePath>../pom.xml</relativePath>
+  </parent>
+
+  <groupId>org.apache.servicecomb.toolkit</groupId>
+  <artifactId>oas-validator-compatibility-spring</artifactId>
+  <version>${parent.version}</version>
+
+  <dependencies>
+
+    <dependency>
+      <groupId>org.apache.servicecomb.toolkit</groupId>
+      <artifactId>oas-validator-compatibility</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+
+    <dependency>
+      <groupId>org.apache.servicecomb.toolkit</groupId>
+      <artifactId>oas-validator-core-spring</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-test</artifactId>
+    </dependency>
+
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-surefire-plugin</artifactId>
+      </plugin>
+
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-surefire-report-plugin</artifactId>
+      </plugin>
+    </plugins>
+  </build>
+
+</project>
diff --git a/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/EncodingDiffValidatorsConfiguration.java b/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/EncodingDiffValidatorsConfiguration.java
new file mode 100755
index 0000000..c547974
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/EncodingDiffValidatorsConfiguration.java
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.config;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.encoding.*;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.EncodingDiffValidator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class EncodingDiffValidatorsConfiguration {
+
+  @Bean
+  public EncodingDiffValidator encodingAddNotAllowedDiffValidator() {
+    return new EncodingAddNotAllowedDiffValidator();
+  }
+
+  @Bean
+  public EncodingDiffValidator encodingDelNotAllowedDiffValidator() {
+    return new EncodingDelNotAllowedDiffValidator();
+  }
+
+  @Bean
+  public EncodingDiffValidator encodingAllowedReservedChangeDiffValidator() {
+    return new EncodingAllowedReservedChangeDiffValidator();
+  }
+
+  @Bean
+  public EncodingDiffValidator encodingContentTypeNotSameDiffValidator() {
+    return new EncodingContentTypeNotSameDiffValidator();
+  }
+
+  @Bean
+  public EncodingDiffValidator encodingExplodeNotSameDiffValidator() {
+    return new EncodingExplodeNotSameDiffValidator();
+  }
+
+  @Bean
+  public EncodingDiffValidator encodingStyleNotSameDiffValidator() {
+    return new EncodingStyleNotSameDiffValidator();
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/HeaderDiffValidatorsConfiguration.java b/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/HeaderDiffValidatorsConfiguration.java
new file mode 100755
index 0000000..aaf35da
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/HeaderDiffValidatorsConfiguration.java
@@ -0,0 +1,39 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.config;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.HeaderDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.header.HeaderAddInRequestBodyNotAllowedDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.header.HeaderDelInResponseNotAllowedDiffValidator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class HeaderDiffValidatorsConfiguration {
+
+  @Bean
+  public HeaderDiffValidator headerAddInRequestBodyNotAllowedDiffValidator() {
+    return new HeaderAddInRequestBodyNotAllowedDiffValidator();
+  }
+
+  @Bean
+  public HeaderDiffValidator headerDelInResponseNotAllowedDiffValidator() {
+    return new HeaderDelInResponseNotAllowedDiffValidator();
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/MediaTypeDiffValidatorsConfiguration.java b/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/MediaTypeDiffValidatorsConfiguration.java
new file mode 100755
index 0000000..023bfa2
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/MediaTypeDiffValidatorsConfiguration.java
@@ -0,0 +1,51 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.config;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.MediaTypeDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.mediatype.MediaTypeAddInParameterNotAllowedDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.mediatype.MediaTypeDelInParameterNotAllowedDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.mediatype.MediaTypeDelInRequestBodyNotAllowedDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.mediatype.MediaTypeDelInResponseNotAllowedDiffValidator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class MediaTypeDiffValidatorsConfiguration {
+
+  @Bean
+  public MediaTypeDiffValidator mediaTypeAddInParameterNotAllowedDiffValidator() {
+    return new MediaTypeAddInParameterNotAllowedDiffValidator();
+  }
+
+  @Bean
+  public MediaTypeDiffValidator mediaTypeDelInParameterNotAllowedDiffValidator() {
+    return new MediaTypeDelInParameterNotAllowedDiffValidator();
+  }
+
+  @Bean
+  public MediaTypeDiffValidator mediaTypeDelInRequestBodyNotAllowedDiffValidator() {
+    return new MediaTypeDelInRequestBodyNotAllowedDiffValidator();
+  }
+
+  @Bean
+  public MediaTypeDiffValidator mediaTypeDelInResponseNotAllowedDiffValidator() {
+    return new MediaTypeDelInResponseNotAllowedDiffValidator();
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/OperationDiffValidatorsConfiguration.java b/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/OperationDiffValidatorsConfiguration.java
new file mode 100755
index 0000000..e82dc36
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/OperationDiffValidatorsConfiguration.java
@@ -0,0 +1,39 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.config;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.operation.OperationDeleteNotAllowedDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.operation.OperationIdNotSameDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OperationDiffValidator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class OperationDiffValidatorsConfiguration {
+
+  @Bean
+  public OperationDiffValidator operationDeleteNotAllowedDiffValidator() {
+    return new OperationDeleteNotAllowedDiffValidator();
+  }
+
+  @Bean
+  public OperationDiffValidator operationIdNotSameDiffValidator() {
+    return new OperationIdNotSameDiffValidator();
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/ParameterDiffValidatorsConfiguration.java b/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/ParameterDiffValidatorsConfiguration.java
new file mode 100755
index 0000000..f007e49
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/ParameterDiffValidatorsConfiguration.java
@@ -0,0 +1,59 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.config;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.parameter.*;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ParameterDiffValidator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class ParameterDiffValidatorsConfiguration {
+
+  @Bean
+  public ParameterDiffValidator parameterAddDiffValidator() {
+    return new ParameterAddDiffValidator();
+  }
+
+  @Bean
+  public ParameterDiffValidator parameterRequiredChangeDiffValidator() {
+    return new ParameterRequiredChangeDiffValidator();
+  }
+
+  @Bean
+  public ParameterDiffValidator parameterAllowEmptyValueChangeDiffValidator() {
+    return new ParameterAllowEmptyValueChangeDiffValidator();
+  }
+
+  @Bean
+  public ParameterDiffValidator parameterStyleNotSameDiffValidator() {
+    return new ParameterStyleNotSameDiffValidator();
+  }
+
+  @Bean
+  public ParameterDiffValidator parameterExplodeNotSameDiffValidator() {
+    return new ParameterExplodeNotSameDiffValidator();
+  }
+
+  @Bean
+  public ParameterDiffValidator parameterAllowReservedChangeDiffValidator() {
+    return new ParameterAllowReservedChangeDiffValidator();
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/PathItemDiffValidatorsConfiguration.java b/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/PathItemDiffValidatorsConfiguration.java
new file mode 100755
index 0000000..ef930c2
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/PathItemDiffValidatorsConfiguration.java
@@ -0,0 +1,33 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.config;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.PathItemDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.pathitem.PathItemDeleteNotAllowedDiffValidator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class PathItemDiffValidatorsConfiguration {
+
+  @Bean
+  public PathItemDiffValidator pathItemDeleteNotAllowedValidator() {
+    return new PathItemDeleteNotAllowedDiffValidator();
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/RequestBodyDiffValidatorsConfiguration.java b/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/RequestBodyDiffValidatorsConfiguration.java
new file mode 100755
index 0000000..4fb57a2
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/RequestBodyDiffValidatorsConfiguration.java
@@ -0,0 +1,33 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.config;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.RequestBodyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.requestbody.RequestBodyRequiredChangeDiffValidator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class RequestBodyDiffValidatorsConfiguration {
+
+  @Bean
+  public RequestBodyDiffValidator requestBodyRequiredChangeDiffValidator() {
+    return new RequestBodyRequiredChangeDiffValidator();
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/ResponseDiffValidatorsConfiguration.java b/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/ResponseDiffValidatorsConfiguration.java
new file mode 100755
index 0000000..82996a0
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/ResponseDiffValidatorsConfiguration.java
@@ -0,0 +1,33 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.config;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ResponseDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.response.ResponseAddNotAllowedDiffValidator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class ResponseDiffValidatorsConfiguration {
+
+  @Bean
+  public ResponseDiffValidator responseAddNotAllowedDiffValidator() {
+    return new ResponseAddNotAllowedDiffValidator();
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/SchemaDiffValidatorsConfiguration.java b/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/SchemaDiffValidatorsConfiguration.java
new file mode 100755
index 0000000..91d6930
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/config/SchemaDiffValidatorsConfiguration.java
@@ -0,0 +1,212 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.config;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request.*;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response.*;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaDiscriminatorChangeValidator;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaReadOnlyChangeValidator;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaWriteOnlyChangeValidator;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaXmlChangeValidator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class SchemaDiffValidatorsConfiguration {
+
+  @Bean
+  public SchemaCompareValidator schemaTypeFormatInRequestCompareValidator() {
+    return new SchemaTypeFormatChangeInRequestValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaTypeFormatInResponseCompareValidator() {
+    return new SchemaTypeFormatChangeInResponseValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaMultipleOfChangeInRequestValidator() {
+    return new SchemaMultipleOfChangeInRequestValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaMaximumChangeInResponseValidator() {
+    return new SchemaMaximumChangeInResponseValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaMaximumChangeInRequestValidator() {
+    return new SchemaMaximumChangeInRequestValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaExclusiveMinimumChangeInRequestValidator() {
+    return new SchemaExclusiveMinimumChangeInRequestValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaExclusiveMaximumChangeInRequestValidator() {
+    return new SchemaExclusiveMaximumChangeInRequestValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaExclusiveMaximumChangeInResponseValidator() {
+    return new SchemaExclusiveMaximumChangeInResponseValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaExclusiveMinimumChangeInResponseValidator() {
+    return new SchemaExclusiveMinimumChangeInResponseValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaMaxItemsChangeInRequestValidator() {
+    return new SchemaMaxItemsChangeInRequestValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaMaxLengthChangeInRequestValidator() {
+    return new SchemaMaxLengthChangeInRequestValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaMaxPropertiesChangeInRequestValidator() {
+    return new SchemaMaxPropertiesChangeInRequestValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaMinimumChangeInRequestValidator() {
+    return new SchemaMinimumChangeInRequestValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaMinItemsChangeInRequestValidator() {
+    return new SchemaMinItemsChangeInRequestValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaMinLengthChangeInRequestValidator() {
+    return new SchemaMinLengthChangeInRequestValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaMinPropertiesChangeInRequestValidator() {
+    return new SchemaMinPropertiesChangeInRequestValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaUniqueItemsChangeInRequestValidator() {
+    return new SchemaUniqueItemsChangeInRequestValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaRequiredChangeInRequestValidator() {
+    return new SchemaRequiredChangeInRequestValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaEnumChangeInRequestValidator() {
+    return new SchemaEnumChangeInRequestValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaNullableChangeInRequestValidator() {
+    return new SchemaNullableChangeInRequestValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaReadOnlyChangeValidator() {
+    return new SchemaReadOnlyChangeValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaWriteOnlyChangeValidator() {
+    return new SchemaWriteOnlyChangeValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaXmlChangeValidator() {
+    return new SchemaXmlChangeValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaDiscriminatorChangeValidator() {
+    return new SchemaDiscriminatorChangeValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaMultipleOfChangeInResponseValidator() {
+    return new SchemaMultipleOfChangeInResponseValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaMaxItemsChangeInResponseValidator() {
+    return new SchemaMaxItemsChangeInResponseValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaMaxLengthChangeInResponseValidator() {
+    return new SchemaMaxLengthChangeInResponseValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaMaxPropertiesChangeInResponseValidator() {
+    return new SchemaMaxPropertiesChangeInResponseValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaMinimumChangeInResponseValidator() {
+    return new SchemaMinimumChangeInResponseValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaMinItemsChangeInResponseValidator() {
+    return new SchemaMinItemsChangeInResponseValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaMinLengthChangeInResponseValidator() {
+    return new SchemaMinLengthChangeInResponseValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaMinPropertiesChangeInResponseValidator() {
+    return new SchemaMinPropertiesChangeInResponseValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaUniqueItemsChangeInResponseValidator() {
+    return new SchemaUniqueItemsChangeInResponseValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaRequiredChangeInResponseValidator() {
+    return new SchemaRequiredChangeInResponseValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaEnumChangeInResponseValidator() {
+    return new SchemaEnumChangeInResponseValidator();
+  }
+
+  @Bean
+  public SchemaCompareValidator schemaNullableChangeInResponseValidator() {
+    return new SchemaNullableChangeInResponseValidator();
+  }
+}
diff --git a/oas-validator/oas-validator-compatibility-spring/src/main/resources/META-INF/spring.factories b/oas-validator/oas-validator-compatibility-spring/src/main/resources/META-INF/spring.factories
new file mode 100755
index 0000000..fb0c853
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility-spring/src/main/resources/META-INF/spring.factories
@@ -0,0 +1,10 @@
+org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
+org.apache.servicecomb.toolkit.oasv.compatibility.config.EncodingDiffValidatorsConfiguration,\
+org.apache.servicecomb.toolkit.oasv.compatibility.config.HeaderDiffValidatorsConfiguration,\
+org.apache.servicecomb.toolkit.oasv.compatibility.config.MediaTypeDiffValidatorsConfiguration,\
+org.apache.servicecomb.toolkit.oasv.compatibility.config.OperationDiffValidatorsConfiguration,\
+org.apache.servicecomb.toolkit.oasv.compatibility.config.ParameterDiffValidatorsConfiguration,\
+org.apache.servicecomb.toolkit.oasv.compatibility.config.PathItemDiffValidatorsConfiguration,\
+org.apache.servicecomb.toolkit.oasv.compatibility.config.RequestBodyDiffValidatorsConfiguration,\
+org.apache.servicecomb.toolkit.oasv.compatibility.config.ResponseDiffValidatorsConfiguration,\
+org.apache.servicecomb.toolkit.oasv.compatibility.config.SchemaDiffValidatorsConfiguration
diff --git a/oas-validator/oas-validator-compatibility/pom.xml b/oas-validator/oas-validator-compatibility/pom.xml
new file mode 100755
index 0000000..cb4bb4d
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/pom.xml
@@ -0,0 +1,81 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one or more
+  ~ contributor license agreements.  See the NOTICE file distributed with
+  ~ this work for additional information regarding copyright ownership.
+  ~ The ASF licenses this file to You under the Apache License, Version 2.0
+  ~ (the "License"); you may not use this file except in compliance with
+  ~ the License.  You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.apache.servicecomb.toolkit</groupId>
+    <artifactId>oas-validator-parent</artifactId>
+    <version>0.2.0-SNAPSHOT</version>
+    <relativePath>../pom.xml</relativePath>
+  </parent>
+
+  <groupId>org.apache.servicecomb.toolkit</groupId>
+  <artifactId>oas-validator-compatibility</artifactId>
+  <version>${parent.version}</version>
+
+  <properties>
+  </properties>
+
+  <dependencies>
+
+    <dependency>
+      <groupId>org.apache.servicecomb.toolkit</groupId>
+      <artifactId>oas-validator-core</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+
+    <!-- test deps -->
+    <dependency>
+      <groupId>org.apache.servicecomb.toolkit</groupId>
+      <artifactId>oas-validator-test</artifactId>
+      <version>${project.version}</version>
+      <scope>test</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>org.apache.servicecomb.toolkit</groupId>
+      <artifactId>oas-validator-core-spring</artifactId>
+      <version>${project.version}</version>
+      <scope>test</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-test</artifactId>
+      <scope>test</scope>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-surefire-plugin</artifactId>
+      </plugin>
+
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-surefire-report-plugin</artifactId>
+      </plugin>
+    </plugins>
+  </build>
+
+</project>
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingAddNotAllowedDiffValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingAddNotAllowedDiffValidator.java
new file mode 100755
index 0000000..1db67a1
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingAddNotAllowedDiffValidator.java
@@ -0,0 +1,38 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.encoding;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import io.swagger.v3.oas.models.media.Encoding;
+
+import java.util.List;
+
+import static java.util.Collections.singletonList;
+
+public class EncodingAddNotAllowedDiffValidator
+  extends OasObjectDiffValidatorTemplate<Encoding>
+  implements EncodingDiffValidator {
+
+  @Override
+  protected List<OasDiffViolation> validateAdd(OasDiffValidationContext context,
+    OasObjectPropertyLocation rightLocation, Encoding rightOasObject) {
+    return singletonList(OasDiffViolation.onlyRight(rightLocation, DiffViolationMessages.OP_ADD_FORBIDDEN));
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingAllowedReservedChangeDiffValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingAllowedReservedChangeDiffValidator.java
new file mode 100755
index 0000000..614471b
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingAllowedReservedChangeDiffValidator.java
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.encoding;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.EncodingDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasObjectDiffValidatorTemplate;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.util.ChangeRangeCheckUtils;
+import io.swagger.v3.oas.models.media.Encoding;
+
+import java.util.List;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+import static org.apache.commons.lang3.ObjectUtils.defaultIfNull;
+
+public class EncodingAllowedReservedChangeDiffValidator
+  extends OasObjectDiffValidatorTemplate<Encoding>
+  implements EncodingDiffValidator {
+
+  @Override
+  protected List<OasDiffViolation> validateCompare(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, Encoding leftOasObject, OasObjectPropertyLocation rightLocation,
+    Encoding rightOasObject) {
+
+    if (ChangeRangeCheckUtils.isNotViolated(
+      defaultIfNull(leftOasObject.getAllowReserved(), Boolean.FALSE),
+      defaultIfNull(rightOasObject.getAllowReserved(), Boolean.FALSE),
+      singletonList(new Object[] { false, true }))) {
+      return emptyList();
+    }
+
+    return singletonList(new OasDiffViolation(
+      leftLocation.property("allowReserved"),
+      rightLocation.property("allowReserved"),
+      "仅允许false->true的修改"
+    ));
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingContentTypeNotSameDiffValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingContentTypeNotSameDiffValidator.java
new file mode 100755
index 0000000..932981d
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingContentTypeNotSameDiffValidator.java
@@ -0,0 +1,51 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.encoding;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import io.swagger.v3.oas.models.media.Encoding;
+
+import java.util.List;
+import java.util.Objects;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+public class EncodingContentTypeNotSameDiffValidator
+  extends OasObjectDiffValidatorTemplate<Encoding>
+  implements EncodingDiffValidator {
+
+  @Override
+  protected List<OasDiffViolation> validateCompare(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, Encoding leftOasObject, OasObjectPropertyLocation rightLocation,
+    Encoding rightOasObject) {
+
+    if (Objects.equals(leftOasObject.getContentType(), rightOasObject.getContentType())) {
+      return emptyList();
+    }
+
+    return singletonList(new OasDiffViolation(
+      leftLocation.property("contentType"),
+      rightLocation.property("contentType"),
+      DiffViolationMessages.NEW_NOT_EQ_OLD
+    ));
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingDelNotAllowedDiffValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingDelNotAllowedDiffValidator.java
new file mode 100755
index 0000000..1933510
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingDelNotAllowedDiffValidator.java
@@ -0,0 +1,38 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.encoding;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import io.swagger.v3.oas.models.media.Encoding;
+
+import java.util.List;
+
+import static java.util.Collections.singletonList;
+
+public class EncodingDelNotAllowedDiffValidator
+  extends OasObjectDiffValidatorTemplate<Encoding>
+  implements EncodingDiffValidator {
+
+  @Override
+  protected List<OasDiffViolation> validateDel(OasDiffValidationContext context, OasObjectPropertyLocation leftLocation,
+    Encoding leftOasObject) {
+    return singletonList(OasDiffViolation.onlyLeft(leftLocation, DiffViolationMessages.OP_DEL_FORBIDDEN));
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingExplodeNotSameDiffValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingExplodeNotSameDiffValidator.java
new file mode 100755
index 0000000..7b97226
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingExplodeNotSameDiffValidator.java
@@ -0,0 +1,51 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.encoding;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import io.swagger.v3.oas.models.media.Encoding;
+
+import java.util.List;
+import java.util.Objects;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+public class EncodingExplodeNotSameDiffValidator
+  extends OasObjectDiffValidatorTemplate<Encoding>
+  implements EncodingDiffValidator {
+
+  @Override
+  protected List<OasDiffViolation> validateCompare(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, Encoding leftOasObject, OasObjectPropertyLocation rightLocation,
+    Encoding rightOasObject) {
+
+    if (Objects.equals(leftOasObject.getExplode(), rightOasObject.getExplode())) {
+      return emptyList();
+    }
+
+    return singletonList(new OasDiffViolation(
+      leftLocation.property("explode"),
+      rightLocation.property("explode"),
+      DiffViolationMessages.NEW_NOT_EQ_OLD
+    ));
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingStyleNotSameDiffValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingStyleNotSameDiffValidator.java
new file mode 100755
index 0000000..760290b
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingStyleNotSameDiffValidator.java
@@ -0,0 +1,52 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.encoding;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import io.swagger.v3.oas.models.media.Encoding;
+
+import java.util.List;
+import java.util.Objects;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+public class EncodingStyleNotSameDiffValidator
+  extends OasObjectDiffValidatorTemplate<Encoding>
+  implements EncodingDiffValidator {
+
+  @Override
+  protected List<OasDiffViolation> validateCompare(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, Encoding leftOasObject, OasObjectPropertyLocation rightLocation,
+    Encoding rightOasObject) {
+
+    if (Objects.equals(leftOasObject.getStyle(), rightOasObject.getStyle())) {
+      return emptyList();
+    }
+
+    return singletonList(new OasDiffViolation(
+      leftLocation.property("style"),
+      rightLocation.property("style"),
+      DiffViolationMessages.NEW_NOT_EQ_OLD
+    ));
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/HeaderAddInRequestBodyNotAllowedDiffValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/HeaderAddInRequestBodyNotAllowedDiffValidator.java
new file mode 100755
index 0000000..7a8c4dd
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/HeaderAddInRequestBodyNotAllowedDiffValidator.java
@@ -0,0 +1,45 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.header;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import io.swagger.v3.oas.models.headers.Header;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInRequestBody;
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+/**
+ * 不允许在requestBody.content.'mediaType'.encoding.'encoding'.headers 下添加Header Object
+ */
+public class HeaderAddInRequestBodyNotAllowedDiffValidator extends OasObjectDiffValidatorTemplate<Header>
+  implements HeaderDiffValidator {
+
+  @Override
+  protected List<OasDiffViolation> validateAdd(OasDiffValidationContext context,
+    OasObjectPropertyLocation rightLocation, Header rightOasObject) {
+    if (!isInRequestBody(context)) {
+      return emptyList();
+    }
+    return singletonList(OasDiffViolation.onlyRight(rightLocation, DiffViolationMessages.OP_ADD_FORBIDDEN));
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/HeaderDelInResponseNotAllowedDiffValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/HeaderDelInResponseNotAllowedDiffValidator.java
new file mode 100755
index 0000000..8232d22
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/HeaderDelInResponseNotAllowedDiffValidator.java
@@ -0,0 +1,45 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.header;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import io.swagger.v3.oas.models.headers.Header;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInResponse;
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+/**
+ * 不允许在responses.'response'.headers.headers 下删除Header Object
+ */
+public class HeaderDelInResponseNotAllowedDiffValidator extends OasObjectDiffValidatorTemplate<Header>
+  implements HeaderDiffValidator {
+
+  @Override
+  protected List<OasDiffViolation> validateDel(OasDiffValidationContext context,
+    OasObjectPropertyLocation rightLocation, Header rightOasObject) {
+    if (!isInResponse(context)) {
+      return emptyList();
+    }
+    return singletonList(OasDiffViolation.onlyLeft(rightLocation, DiffViolationMessages.OP_DEL_FORBIDDEN));
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeAddInParameterNotAllowedDiffValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeAddInParameterNotAllowedDiffValidator.java
new file mode 100755
index 0000000..877694f
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeAddInParameterNotAllowedDiffValidator.java
@@ -0,0 +1,46 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.mediatype;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import io.swagger.v3.oas.models.media.MediaType;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInParameter;
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+/**
+ * 不允许在Parameter.content下添加MediaType
+ */
+public class MediaTypeAddInParameterNotAllowedDiffValidator
+  extends OasObjectDiffValidatorTemplate<MediaType>
+  implements MediaTypeDiffValidator {
+
+  @Override
+  protected List<OasDiffViolation> validateAdd(OasDiffValidationContext context,
+    OasObjectPropertyLocation rightLocation, MediaType rightOasObject) {
+    if (!isInParameter(context)) {
+      return emptyList();
+    }
+    return singletonList(OasDiffViolation.onlyRight(rightLocation, DiffViolationMessages.OP_ADD_FORBIDDEN));
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeDelInParameterNotAllowedDiffValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeDelInParameterNotAllowedDiffValidator.java
new file mode 100755
index 0000000..eca4ac3
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeDelInParameterNotAllowedDiffValidator.java
@@ -0,0 +1,46 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.mediatype;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import io.swagger.v3.oas.models.media.MediaType;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInParameter;
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+/**
+ * 不允许在Parameter.content下删除MediaType
+ */
+public class MediaTypeDelInParameterNotAllowedDiffValidator
+  extends OasObjectDiffValidatorTemplate<MediaType>
+  implements MediaTypeDiffValidator {
+
+  @Override
+  protected List<OasDiffViolation> validateDel(OasDiffValidationContext context, OasObjectPropertyLocation leftLocation,
+    MediaType leftOasObject) {
+    if (!isInParameter(context)) {
+      return emptyList();
+    }
+    return singletonList(OasDiffViolation.onlyLeft(leftLocation, DiffViolationMessages.OP_DEL_FORBIDDEN));
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeDelInRequestBodyNotAllowedDiffValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeDelInRequestBodyNotAllowedDiffValidator.java
new file mode 100755
index 0000000..6a50f83
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeDelInRequestBodyNotAllowedDiffValidator.java
@@ -0,0 +1,46 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.mediatype;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import io.swagger.v3.oas.models.media.MediaType;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInRequestBody;
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+/**
+ * 不允许在RequestBody.content下删除MediaType
+ */
+public class MediaTypeDelInRequestBodyNotAllowedDiffValidator
+  extends OasObjectDiffValidatorTemplate<MediaType>
+  implements MediaTypeDiffValidator {
+
+  @Override
+  protected List<OasDiffViolation> validateDel(OasDiffValidationContext context, OasObjectPropertyLocation leftLocation,
+    MediaType leftOasObject) {
+    if (!isInRequestBody(context)) {
+      return emptyList();
+    }
+    return singletonList(OasDiffViolation.onlyLeft(leftLocation, DiffViolationMessages.OP_DEL_FORBIDDEN));
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeDelInResponseNotAllowedDiffValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeDelInResponseNotAllowedDiffValidator.java
new file mode 100755
index 0000000..243a60b
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeDelInResponseNotAllowedDiffValidator.java
@@ -0,0 +1,46 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.mediatype;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import io.swagger.v3.oas.models.media.MediaType;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInResponse;
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+/**
+ * 不允许在responses.'response'.content.'mediaType' 下删除Header Object
+ */
+public class MediaTypeDelInResponseNotAllowedDiffValidator
+  extends OasObjectDiffValidatorTemplate<MediaType>
+  implements MediaTypeDiffValidator {
+
+  @Override
+  protected List<OasDiffViolation> validateDel(OasDiffValidationContext context, OasObjectPropertyLocation leftLocation,
+    MediaType leftOasObject) {
+    if (!isInResponse(context)) {
+      return emptyList();
+    }
+    return singletonList(OasDiffViolation.onlyLeft(leftLocation, DiffViolationMessages.OP_DEL_FORBIDDEN));
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/OperationDeleteNotAllowedDiffValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/OperationDeleteNotAllowedDiffValidator.java
new file mode 100755
index 0000000..1544dc3
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/OperationDeleteNotAllowedDiffValidator.java
@@ -0,0 +1,38 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.operation;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import io.swagger.v3.oas.models.Operation;
+
+import java.util.List;
+
+import static java.util.Collections.singletonList;
+
+public class OperationDeleteNotAllowedDiffValidator
+  extends OasObjectDiffValidatorTemplate<Operation>
+  implements OperationDiffValidator {
+
+  @Override
+  protected List<OasDiffViolation> validateDel(OasDiffValidationContext context, OasObjectPropertyLocation leftLocation,
+    Operation leftOasObject) {
+
+    return singletonList(OasDiffViolation.onlyLeft(leftLocation, DiffViolationMessages.OP_DEL_FORBIDDEN));
+  }
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/OperationIdNotSameDiffValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/OperationIdNotSameDiffValidator.java
new file mode 100755
index 0000000..7aa5b34
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/OperationIdNotSameDiffValidator.java
@@ -0,0 +1,46 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.operation;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import io.swagger.v3.oas.models.Operation;
+
+import java.util.List;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+public class OperationIdNotSameDiffValidator
+  extends OasObjectDiffValidatorTemplate<Operation>
+  implements OperationDiffValidator {
+
+  @Override
+  protected List<OasDiffViolation> validateCompare(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, Operation leftOasObject, OasObjectPropertyLocation rightLocation,
+    Operation rightOasObject) {
+    if (leftOasObject.getOperationId().equalsIgnoreCase(rightOasObject.getOperationId())) {
+      return emptyList();
+    }
+    return singletonList(new OasDiffViolation(
+      leftLocation.property("operationId"),
+      rightLocation.property("operationId"),
+      DiffViolationMessages.NEW_NOT_EQ_OLD));
+
+  }
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterAddDiffValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterAddDiffValidator.java
new file mode 100755
index 0000000..e5ee7e2
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterAddDiffValidator.java
@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasObjectDiffValidatorTemplate;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ParameterDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.util.ParameterUtils;
+import io.swagger.v3.oas.models.parameters.Parameter;
+
+import java.util.List;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+public class ParameterAddDiffValidator
+  extends OasObjectDiffValidatorTemplate<Parameter>
+  implements ParameterDiffValidator {
+
+  @Override
+  protected List<OasDiffViolation> validateAdd(OasDiffValidationContext context,
+    OasObjectPropertyLocation rightLocation, Parameter rightOasObject) {
+
+    if (Boolean.FALSE.equals(rightOasObject.getRequired())) {
+      return emptyList();
+    }
+
+    String message = new StringBuilder()
+      .append(ParameterUtils.getKeyString(rightOasObject))
+      .append(':')
+      .append("仅允许新增required=false的parameter")
+      .toString()
+      ;
+
+    return singletonList(OasDiffViolation.onlyRight(rightLocation.property("required"), message));
+
+  }
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterAllowEmptyValueChangeDiffValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterAllowEmptyValueChangeDiffValidator.java
new file mode 100755
index 0000000..8ac7d39
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterAllowEmptyValueChangeDiffValidator.java
@@ -0,0 +1,69 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasObjectDiffValidatorTemplate;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ParameterDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.util.ChangeRangeCheckUtils;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.util.ParameterUtils;
+import io.swagger.v3.oas.models.parameters.Parameter;
+
+import java.util.List;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+import static org.apache.commons.lang3.ObjectUtils.defaultIfNull;
+
+/**
+ * 仅允许false->true的修改
+ */
+public class ParameterAllowEmptyValueChangeDiffValidator
+  extends OasObjectDiffValidatorTemplate<Parameter>
+  implements ParameterDiffValidator {
+
+  @Override
+  protected List<OasDiffViolation> validateCompare(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, Parameter leftOasObject, OasObjectPropertyLocation rightLocation,
+    Parameter rightOasObject) {
+
+
+    if (ChangeRangeCheckUtils.isNotViolated(
+      defaultIfNull(leftOasObject.getAllowEmptyValue(), Boolean.FALSE),
+      defaultIfNull(rightOasObject.getAllowEmptyValue(), Boolean.FALSE),
+      singletonList(new Object[] { false, true }))) {
+      return emptyList();
+    }
+
+    String message = new StringBuilder()
+      .append(ParameterUtils.getKeyString(rightOasObject))
+      .append(':')
+      .append("仅允许false->true的修改")
+      .toString();
+
+    return singletonList(new OasDiffViolation(
+      leftLocation.property("allowEmptyValue"),
+      rightLocation.property("allowEmptyValue"),
+      message
+    ));
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterAllowReservedChangeDiffValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterAllowReservedChangeDiffValidator.java
new file mode 100755
index 0000000..9cca97a
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterAllowReservedChangeDiffValidator.java
@@ -0,0 +1,68 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasObjectDiffValidatorTemplate;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ParameterDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.util.ChangeRangeCheckUtils;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.util.ParameterUtils;
+import io.swagger.v3.oas.models.parameters.Parameter;
+
+import java.util.List;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+import static org.apache.commons.lang3.ObjectUtils.defaultIfNull;
+
+/**
+ * 仅允许false->true的修改
+ */
+public class ParameterAllowReservedChangeDiffValidator
+  extends OasObjectDiffValidatorTemplate<Parameter>
+  implements ParameterDiffValidator {
+
+  @Override
+  protected List<OasDiffViolation> validateCompare(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, Parameter leftOasObject, OasObjectPropertyLocation rightLocation,
+    Parameter rightOasObject) {
+
+    if (ChangeRangeCheckUtils.isNotViolated(
+      defaultIfNull(leftOasObject.getAllowReserved(), Boolean.FALSE),
+      defaultIfNull(rightOasObject.getAllowReserved(), Boolean.FALSE),
+      singletonList(new Object[] { false, true }))) {
+      return emptyList();
+    }
+
+    String message = new StringBuilder()
+      .append(ParameterUtils.getKeyString(rightOasObject))
+      .append(':')
+      .append("仅允许false->true的修改")
+      .toString();
+
+    return singletonList(new OasDiffViolation(
+      leftLocation.property("allowReserved"),
+      rightLocation.property("allowReserved"),
+      message
+    ));
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterExplodeNotSameDiffValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterExplodeNotSameDiffValidator.java
new file mode 100755
index 0000000..1089b22
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterExplodeNotSameDiffValidator.java
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.util.ParameterUtils;
+import io.swagger.v3.oas.models.parameters.Parameter;
+
+import java.util.List;
+import java.util.Objects;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+public class ParameterExplodeNotSameDiffValidator
+  extends OasObjectDiffValidatorTemplate<Parameter>
+  implements ParameterDiffValidator {
+
+  @Override
+  protected List<OasDiffViolation> validateCompare(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, Parameter leftOasObject, OasObjectPropertyLocation rightLocation,
+    Parameter rightOasObject) {
+
+    if (Objects.equals(leftOasObject.getExplode(), rightOasObject.getExplode())) {
+      return emptyList();
+    }
+
+    String message = new StringBuilder()
+      .append(ParameterUtils.getKeyString(rightOasObject))
+      .append(':')
+      .append(DiffViolationMessages.NEW_NOT_EQ_OLD)
+      .toString();
+
+    return singletonList(new OasDiffViolation(
+      leftLocation.property("explode"),
+      rightLocation.property("explode"),
+      message
+    ));
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterRequiredChangeDiffValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterRequiredChangeDiffValidator.java
new file mode 100755
index 0000000..f629812
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterRequiredChangeDiffValidator.java
@@ -0,0 +1,68 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasObjectDiffValidatorTemplate;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ParameterDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.util.ChangeRangeCheckUtils;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.util.ParameterUtils;
+import io.swagger.v3.oas.models.parameters.Parameter;
+
+import java.util.List;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+import static org.apache.commons.lang3.ObjectUtils.defaultIfNull;
+
+/**
+ * 仅允许true->false的修改
+ */
+public class ParameterRequiredChangeDiffValidator
+  extends OasObjectDiffValidatorTemplate<Parameter>
+  implements ParameterDiffValidator {
+
+  @Override
+  protected List<OasDiffViolation> validateCompare(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, Parameter leftOasObject, OasObjectPropertyLocation rightLocation,
+    Parameter rightOasObject) {
+
+    if (ChangeRangeCheckUtils.isNotViolated(
+      defaultIfNull(leftOasObject.getRequired(), Boolean.FALSE),
+      defaultIfNull(rightOasObject.getRequired(), Boolean.FALSE),
+      singletonList(new Object[] { true, false }))) {
+      return emptyList();
+    }
+
+    String message = new StringBuilder()
+      .append(ParameterUtils.getKeyString(rightOasObject))
+      .append(':')
+      .append("仅允许true->false的修改")
+      .toString();
+
+    return singletonList(new OasDiffViolation(
+      leftLocation.property("required"),
+      rightLocation.property("required"),
+      message
+    ));
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterStyleNotSameDiffValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterStyleNotSameDiffValidator.java
new file mode 100755
index 0000000..746babb
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterStyleNotSameDiffValidator.java
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.util.ParameterUtils;
+import io.swagger.v3.oas.models.parameters.Parameter;
+
+import java.util.List;
+import java.util.Objects;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+public class ParameterStyleNotSameDiffValidator
+  extends OasObjectDiffValidatorTemplate<Parameter>
+  implements ParameterDiffValidator {
+
+  @Override
+  protected List<OasDiffViolation> validateCompare(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, Parameter leftOasObject, OasObjectPropertyLocation rightLocation,
+    Parameter rightOasObject) {
+
+    if (Objects.equals(leftOasObject.getStyle(), rightOasObject.getStyle())) {
+      return emptyList();
+    }
+
+    String message = new StringBuilder()
+      .append(ParameterUtils.getKeyString(rightOasObject))
+      .append(':')
+      .append(DiffViolationMessages.NEW_NOT_EQ_OLD)
+      .toString();
+
+    return singletonList(new OasDiffViolation(
+      leftLocation.property("style"),
+      rightLocation.property("style"),
+      message
+    ));
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/pathitem/PathItemDeleteNotAllowedDiffValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/pathitem/PathItemDeleteNotAllowedDiffValidator.java
new file mode 100755
index 0000000..7f7914b
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/pathitem/PathItemDeleteNotAllowedDiffValidator.java
@@ -0,0 +1,39 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.pathitem;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import io.swagger.v3.oas.models.PathItem;
+
+import java.util.List;
+
+import static java.util.Collections.singletonList;
+
+public class PathItemDeleteNotAllowedDiffValidator
+  extends OasObjectDiffValidatorTemplate<PathItem>
+  implements PathItemDiffValidator {
+
+  @Override
+  protected List<OasDiffViolation> validateDel(OasDiffValidationContext context, OasObjectPropertyLocation leftLocation,
+    PathItem leftOasObject) {
+
+    return singletonList(OasDiffViolation.onlyLeft(leftLocation, DiffViolationMessages.OP_DEL_FORBIDDEN));
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/requestbody/RequestBodyRequiredChangeDiffValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/requestbody/RequestBodyRequiredChangeDiffValidator.java
new file mode 100755
index 0000000..76acb03
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/requestbody/RequestBodyRequiredChangeDiffValidator.java
@@ -0,0 +1,61 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.requestbody;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasObjectDiffValidatorTemplate;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.RequestBodyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.util.ChangeRangeCheckUtils;
+import io.swagger.v3.oas.models.parameters.RequestBody;
+import org.apache.commons.lang3.ObjectUtils;
+
+import java.util.List;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+/**
+ * 仅允许true->false的修改
+ */
+public class RequestBodyRequiredChangeDiffValidator
+  extends OasObjectDiffValidatorTemplate<RequestBody>
+  implements RequestBodyDiffValidator {
+
+  @Override
+  protected List<OasDiffViolation> validateCompare(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, RequestBody leftOasObject, OasObjectPropertyLocation rightLocation,
+    RequestBody rightOasObject) {
+
+    if (ChangeRangeCheckUtils.isNotViolated(
+      ObjectUtils.defaultIfNull(leftOasObject.getRequired(), Boolean.FALSE),
+      ObjectUtils.defaultIfNull(rightOasObject.getRequired(), Boolean.FALSE),
+      singletonList(new Object[] { true, false }))) {
+      return emptyList();
+    }
+
+    return singletonList(new OasDiffViolation(
+      leftLocation.property("required"),
+      rightLocation.property("required"),
+      "仅允许true->false的修改"
+    ));
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/response/ResponseAddNotAllowedDiffValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/response/ResponseAddNotAllowedDiffValidator.java
new file mode 100755
index 0000000..dacb282
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/response/ResponseAddNotAllowedDiffValidator.java
@@ -0,0 +1,41 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.response;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import io.swagger.v3.oas.models.responses.ApiResponse;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation.onlyRight;
+import static java.util.Collections.singletonList;
+
+/**
+ * 不允许在responses.'http status code'.下新增 Response Object
+ */
+public class ResponseAddNotAllowedDiffValidator
+  extends OasObjectDiffValidatorTemplate<ApiResponse>
+  implements ResponseDiffValidator {
+
+  @Override
+  protected List<OasDiffViolation> validateAdd(OasDiffValidationContext context,
+    OasObjectPropertyLocation rightLocation, ApiResponse rightOasObject) {
+    return singletonList(onlyRight(rightLocation, DiffViolationMessages.OP_ADD_FORBIDDEN));
+  }
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaDiscriminatorChangeValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaDiscriminatorChangeValidator.java
new file mode 100755
index 0000000..2096b2b
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaDiscriminatorChangeValidator.java
@@ -0,0 +1,52 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import io.swagger.v3.oas.models.media.Discriminator;
+import io.swagger.v3.oas.models.media.Schema;
+
+public class SchemaDiscriminatorChangeValidator extends SchemaPropertyChangeValidator<Discriminator> {
+
+  @Override
+  protected Discriminator getProperty(Schema schema) {
+    return schema.getDiscriminator();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "discriminator";
+  }
+
+  @Override
+  protected boolean isAllowed(Discriminator leftProperty, Discriminator rightProperty) {
+    return leftProperty.equals(rightProperty);
+  }
+
+  @Override
+  protected String getMessage(Discriminator leftProperty, Discriminator rightProperty) {
+    return DiffViolationMessages.NEW_NOT_EQ_OLD;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return true;
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaPropertyChangeValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaPropertyChangeValidator.java
new file mode 100755
index 0000000..c225466
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaPropertyChangeValidator.java
@@ -0,0 +1,84 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import io.swagger.v3.oas.models.media.Schema;
+
+import java.util.List;
+import java.util.Objects;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+public abstract class SchemaPropertyChangeValidator<T> implements SchemaCompareValidator {
+
+  @Override
+  public final List<OasDiffViolation> validate(OasDiffValidationContext context, OasObjectPropertyLocation leftLocation,
+    Schema leftOasObject, OasObjectPropertyLocation rightLocation, Schema rightOasObject) {
+
+    if (!needValidate(context)) {
+      return emptyList();
+    }
+
+    T leftNumber = getProperty(leftOasObject);
+    T rightNumber = getProperty(rightOasObject);
+
+    if (Objects.equals(leftNumber, rightNumber)) {
+      return emptyList();
+    }
+
+    String propertyName = getPropertyName();
+
+    if (leftNumber == null || rightNumber == null) {
+      return singletonList(new OasDiffViolation(
+          leftLocation.property(propertyName),
+          rightLocation.property(propertyName),
+          getMessage(leftNumber, rightNumber)
+        )
+      );
+    }
+
+    if (!isAllowed(leftNumber, rightNumber)) {
+      return singletonList(new OasDiffViolation(
+          leftLocation.property(propertyName),
+          rightLocation.property(propertyName),
+          getMessage(leftNumber, rightNumber)
+        )
+      );
+    }
+
+    return emptyList();
+
+  }
+
+
+  protected abstract T getProperty(Schema schema);
+
+  protected abstract String getPropertyName();
+
+  protected abstract String getMessage(T leftProperty, T rightProperty);
+
+  protected abstract boolean isAllowed(T leftProperty, T rightProperty);
+
+  protected abstract boolean needValidate(OasDiffValidationContext context);
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaReadOnlyChangeValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaReadOnlyChangeValidator.java
new file mode 100755
index 0000000..5d57f94
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaReadOnlyChangeValidator.java
@@ -0,0 +1,52 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import io.swagger.v3.oas.models.media.Schema;
+import org.apache.commons.lang3.ObjectUtils;
+
+public class SchemaReadOnlyChangeValidator extends SchemaPropertyChangeValidator<Boolean> {
+
+  @Override
+  protected Boolean getProperty(Schema schema) {
+    return ObjectUtils.defaultIfNull(schema.getReadOnly(), Boolean.FALSE);
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "readOnly";
+  }
+
+  @Override
+  protected boolean isAllowed(Boolean leftProperty, Boolean rightProperty) {
+    return leftProperty.equals(rightProperty);
+  }
+
+  @Override
+  protected String getMessage(Boolean leftProperty, Boolean rightProperty) {
+    return DiffViolationMessages.NEW_NOT_EQ_OLD;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return true;
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaTypeFormatChangeValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaTypeFormatChangeValidator.java
new file mode 100755
index 0000000..e302456
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaTypeFormatChangeValidator.java
@@ -0,0 +1,72 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.util.ChangeRangeCheckUtils;
+import io.swagger.v3.oas.models.media.Schema;
+
+import java.util.List;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+public abstract class SchemaTypeFormatChangeValidator implements SchemaCompareValidator {
+
+  @Override
+  public final List<OasDiffViolation> validate(OasDiffValidationContext context, OasObjectPropertyLocation leftLocation,
+    Schema leftOasObject, OasObjectPropertyLocation rightLocation, Schema rightOasObject) {
+
+    if (!needValidate(context)) {
+      return emptyList();
+    }
+
+    TypeFormat leftTypeFormat = new TypeFormat(leftOasObject);
+    TypeFormat rightTypeFormat = new TypeFormat(rightOasObject);
+
+    if (ChangeRangeCheckUtils.isNotViolated(leftTypeFormat, rightTypeFormat, getAllowedChangedList())) {
+      return emptyList();
+    }
+
+    StringBuilder message = new StringBuilder("不允许");
+    message
+      .append("(type=")
+      .append(leftTypeFormat.getType())
+      .append(",format=")
+      .append(leftTypeFormat.getFormat())
+      .append(')')
+      .append("->")
+      .append("(type=")
+      .append(rightTypeFormat.getType())
+      .append(",format=")
+      .append(rightTypeFormat.getFormat())
+      .append(')')
+      .append("的修改");
+
+    return singletonList(new OasDiffViolation(leftLocation, rightLocation, message.toString()));
+
+  }
+
+  protected abstract List<Object[]> getAllowedChangedList();
+
+  protected abstract boolean needValidate(OasDiffValidationContext context);
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaWriteOnlyChangeValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaWriteOnlyChangeValidator.java
new file mode 100755
index 0000000..17b1789
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaWriteOnlyChangeValidator.java
@@ -0,0 +1,52 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import io.swagger.v3.oas.models.media.Schema;
+import org.apache.commons.lang3.ObjectUtils;
+
+public class SchemaWriteOnlyChangeValidator extends SchemaPropertyChangeValidator<Boolean> {
+
+  @Override
+  protected Boolean getProperty(Schema schema) {
+    return ObjectUtils.defaultIfNull(schema.getWriteOnly(), Boolean.FALSE);
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "writeOnly";
+  }
+
+  @Override
+  protected boolean isAllowed(Boolean leftProperty, Boolean rightProperty) {
+    return leftProperty.equals(rightProperty);
+  }
+
+  @Override
+  protected String getMessage(Boolean leftProperty, Boolean rightProperty) {
+    return DiffViolationMessages.NEW_NOT_EQ_OLD;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return true;
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaXmlChangeValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaXmlChangeValidator.java
new file mode 100755
index 0000000..0ecb327
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaXmlChangeValidator.java
@@ -0,0 +1,52 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import io.swagger.v3.oas.models.media.Schema;
+import io.swagger.v3.oas.models.media.XML;
+
+public class SchemaXmlChangeValidator extends SchemaPropertyChangeValidator<XML> {
+
+  @Override
+  protected XML getProperty(Schema schema) {
+    return schema.getXml();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "xml";
+  }
+
+  @Override
+  protected boolean isAllowed(XML leftProperty, XML rightProperty) {
+    return leftProperty.equals(rightProperty);
+  }
+
+  @Override
+  protected String getMessage(XML leftProperty, XML rightProperty) {
+    return DiffViolationMessages.NEW_NOT_EQ_OLD;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return true;
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/TypeFormat.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/TypeFormat.java
new file mode 100755
index 0000000..8b1402b
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/TypeFormat.java
@@ -0,0 +1,68 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema;
+
+import io.swagger.v3.oas.models.media.Schema;
+
+import java.util.Objects;
+import java.util.StringJoiner;
+
+public class TypeFormat {
+  private final String type;
+  private final String format;
+
+  public TypeFormat(String type, String format) {
+    this.type = type;
+    this.format = format;
+  }
+
+  public TypeFormat(Schema schema) {
+    this.type = schema.getType();
+    this.format = schema.getFormat();
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) return true;
+    if (o == null || getClass() != o.getClass()) return false;
+    TypeFormat that = (TypeFormat) o;
+    return Objects.equals(type, that.type) &&
+      Objects.equals(format, that.format);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(type, format);
+  }
+
+  @Override
+  public String toString() {
+    return new StringJoiner(", ", TypeFormat.class.getSimpleName() + "[", "]")
+      .add("type='" + type + "'")
+      .add("format='" + format + "'")
+      .toString();
+  }
+
+  public String getType() {
+    return type;
+  }
+
+  public String getFormat() {
+    return format;
+  }
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaEnumChangeInRequestValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaEnumChangeInRequestValidator.java
new file mode 100755
index 0000000..ef8192f
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaEnumChangeInRequestValidator.java
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+import org.apache.commons.lang3.ObjectUtils;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInParameter;
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInRequestBody;
+import static java.util.Collections.emptyList;
+
+public class SchemaEnumChangeInRequestValidator extends SchemaPropertyChangeValidator<List> {
+
+  @Override
+  protected List getProperty(Schema schema) {
+    return ObjectUtils.defaultIfNull(schema.getEnum(), emptyList());
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "enum";
+  }
+
+  @Override
+  protected boolean isAllowed(List leftProperty, List rightProperty) {
+    return rightProperty.containsAll(leftProperty);
+  }
+
+  @Override
+  protected String getMessage(List leftProperty, List rightProperty) {
+    return "不允许删除enum";
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInParameter(context) || isInRequestBody(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaExclusiveMaximumChangeInRequestValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaExclusiveMaximumChangeInRequestValidator.java
new file mode 100755
index 0000000..b724510
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaExclusiveMaximumChangeInRequestValidator.java
@@ -0,0 +1,60 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.util.ChangeRangeCheckUtils;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+import org.apache.commons.lang3.ObjectUtils;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInParameter;
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInRequestBody;
+import static java.util.Collections.singletonList;
+
+public class SchemaExclusiveMaximumChangeInRequestValidator extends SchemaPropertyChangeValidator<Boolean> {
+
+  @Override
+  protected Boolean getProperty(Schema schema) {
+    return ObjectUtils.defaultIfNull(schema.getExclusiveMaximum(), Boolean.FALSE);
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "exclusiveMaximum";
+  }
+
+  @Override
+  protected boolean isAllowed(Boolean leftProperty, Boolean rightProperty) {
+
+    return ChangeRangeCheckUtils
+      .isNotViolated(leftProperty, rightProperty, singletonList(new Object[] { true, false }));
+
+  }
+
+  @Override
+  protected String getMessage(Boolean leftProperty, Boolean rightProperty) {
+    return "仅允许true->false的修改";
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInParameter(context) || isInRequestBody(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaExclusiveMinimumChangeInRequestValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaExclusiveMinimumChangeInRequestValidator.java
new file mode 100755
index 0000000..5481f59
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaExclusiveMinimumChangeInRequestValidator.java
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.util.ChangeRangeCheckUtils;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+import org.apache.commons.lang3.ObjectUtils;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInParameter;
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInRequestBody;
+import static java.util.Collections.singletonList;
+
+public class SchemaExclusiveMinimumChangeInRequestValidator extends SchemaPropertyChangeValidator<Boolean> {
+
+  @Override
+  protected Boolean getProperty(Schema schema) {
+    return ObjectUtils.defaultIfNull(schema.getExclusiveMinimum(), Boolean.FALSE);
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "exclusiveMinimum";
+  }
+
+  @Override
+  protected boolean isAllowed(Boolean leftProperty, Boolean rightProperty) {
+    return ChangeRangeCheckUtils
+      .isNotViolated(leftProperty, rightProperty, singletonList(new Object[] { true, false }));
+  }
+
+  @Override
+  protected String getMessage(Boolean leftProperty, Boolean rightProperty) {
+    return "仅允许true->false的修改";
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInParameter(context) || isInRequestBody(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaxItemsChangeInRequestValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaxItemsChangeInRequestValidator.java
new file mode 100755
index 0000000..38d1490
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaxItemsChangeInRequestValidator.java
@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInParameter;
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInRequestBody;
+
+public class SchemaMaxItemsChangeInRequestValidator extends SchemaPropertyChangeValidator<Integer> {
+
+  @Override
+  protected Integer getProperty(Schema schema) {
+    return schema.getMaxItems();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "maxItems";
+  }
+
+  @Override
+  protected boolean isAllowed(Integer leftProperty, Integer rightProperty) {
+    return rightProperty.compareTo(leftProperty) >= 0;
+  }
+
+  @Override
+  protected String getMessage(Integer leftProperty, Integer rightProperty) {
+    return DiffViolationMessages.NEW_NOT_GTE_OLD;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInParameter(context) || isInRequestBody(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaxLengthChangeInRequestValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaxLengthChangeInRequestValidator.java
new file mode 100755
index 0000000..a7ef8c7
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaxLengthChangeInRequestValidator.java
@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInParameter;
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInRequestBody;
+
+public class SchemaMaxLengthChangeInRequestValidator extends SchemaPropertyChangeValidator<Integer> {
+
+  @Override
+  protected Integer getProperty(Schema schema) {
+    return schema.getMaxLength();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "maxLength";
+  }
+
+  @Override
+  protected boolean isAllowed(Integer leftProperty, Integer rightProperty) {
+    return rightProperty.compareTo(leftProperty) >= 0;
+  }
+
+  @Override
+  protected String getMessage(Integer leftProperty, Integer rightProperty) {
+    return DiffViolationMessages.NEW_NOT_GTE_OLD;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInParameter(context) || isInRequestBody(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaxPropertiesChangeInRequestValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaxPropertiesChangeInRequestValidator.java
new file mode 100755
index 0000000..b6c563c
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaxPropertiesChangeInRequestValidator.java
@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInParameter;
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInRequestBody;
+
+public class SchemaMaxPropertiesChangeInRequestValidator extends SchemaPropertyChangeValidator<Integer> {
+
+  @Override
+  protected Integer getProperty(Schema schema) {
+    return schema.getMaxProperties();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "maxProperties";
+  }
+
+  @Override
+  protected boolean isAllowed(Integer leftProperty, Integer rightProperty) {
+    return rightProperty.compareTo(leftProperty) >= 0;
+  }
+
+  @Override
+  protected String getMessage(Integer leftProperty, Integer rightProperty) {
+    return DiffViolationMessages.NEW_NOT_GTE_OLD;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInParameter(context) || isInRequestBody(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaximumChangeInRequestValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaximumChangeInRequestValidator.java
new file mode 100755
index 0000000..5ae2e79
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaximumChangeInRequestValidator.java
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+
+import java.math.BigDecimal;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInParameter;
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInRequestBody;
+
+public class SchemaMaximumChangeInRequestValidator extends SchemaPropertyChangeValidator<BigDecimal> {
+
+  @Override
+  protected BigDecimal getProperty(Schema schema) {
+    return schema.getMaximum();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "maximum";
+  }
+
+  @Override
+  protected boolean isAllowed(BigDecimal leftProperty, BigDecimal rightProperty) {
+    return rightProperty.compareTo(leftProperty) >= 0;
+  }
+
+  @Override
+  protected String getMessage(BigDecimal leftProperty, BigDecimal rightProperty) {
+    return DiffViolationMessages.NEW_NOT_GTE_OLD;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInParameter(context) || isInRequestBody(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinItemsChangeInRequestValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinItemsChangeInRequestValidator.java
new file mode 100755
index 0000000..beaad54
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinItemsChangeInRequestValidator.java
@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInParameter;
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInRequestBody;
+
+public class SchemaMinItemsChangeInRequestValidator extends SchemaPropertyChangeValidator<Integer> {
+
+  @Override
+  protected Integer getProperty(Schema schema) {
+    return schema.getMinItems();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "minItems";
+  }
+
+  @Override
+  protected boolean isAllowed(Integer leftProperty, Integer rightProperty) {
+    return rightProperty.compareTo(leftProperty) <= 0;
+  }
+
+  @Override
+  protected String getMessage(Integer leftProperty, Integer rightProperty) {
+    return DiffViolationMessages.NEW_NOT_LTE_OLD;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInParameter(context) || isInRequestBody(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinLengthChangeInRequestValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinLengthChangeInRequestValidator.java
new file mode 100755
index 0000000..40693b2
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinLengthChangeInRequestValidator.java
@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInParameter;
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInRequestBody;
+
+public class SchemaMinLengthChangeInRequestValidator extends SchemaPropertyChangeValidator<Integer> {
+
+  @Override
+  protected Integer getProperty(Schema schema) {
+    return schema.getMinLength();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "minLength";
+  }
+
+  @Override
+  protected boolean isAllowed(Integer leftProperty, Integer rightProperty) {
+    return rightProperty.compareTo(leftProperty) <= 0;
+  }
+
+  @Override
+  protected String getMessage(Integer leftProperty, Integer rightProperty) {
+    return DiffViolationMessages.NEW_NOT_LTE_OLD;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInParameter(context) || isInRequestBody(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinPropertiesChangeInRequestValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinPropertiesChangeInRequestValidator.java
new file mode 100755
index 0000000..2b28335
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinPropertiesChangeInRequestValidator.java
@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInParameter;
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInRequestBody;
+
+public class SchemaMinPropertiesChangeInRequestValidator extends SchemaPropertyChangeValidator<Integer> {
+
+  @Override
+  protected Integer getProperty(Schema schema) {
+    return schema.getMinProperties();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "minProperties";
+  }
+
+  @Override
+  protected boolean isAllowed(Integer leftProperty, Integer rightProperty) {
+    return rightProperty.compareTo(leftProperty) <= 0;
+  }
+
+  @Override
+  protected String getMessage(Integer leftProperty, Integer rightProperty) {
+    return DiffViolationMessages.NEW_NOT_LTE_OLD;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInParameter(context) || isInRequestBody(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinimumChangeInRequestValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinimumChangeInRequestValidator.java
new file mode 100755
index 0000000..7c68259
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinimumChangeInRequestValidator.java
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+
+import java.math.BigDecimal;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInParameter;
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInRequestBody;
+
+public class SchemaMinimumChangeInRequestValidator extends SchemaPropertyChangeValidator<BigDecimal> {
+
+  @Override
+  protected BigDecimal getProperty(Schema schema) {
+    return schema.getMinimum();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "minimum";
+  }
+
+  @Override
+  protected boolean isAllowed(BigDecimal leftProperty, BigDecimal rightProperty) {
+    return rightProperty.compareTo(leftProperty) <= 0;
+  }
+
+  @Override
+  protected String getMessage(BigDecimal leftProperty, BigDecimal rightProperty) {
+    return DiffViolationMessages.NEW_NOT_LTE_OLD;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInParameter(context) || isInRequestBody(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMultipleOfChangeInRequestValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMultipleOfChangeInRequestValidator.java
new file mode 100755
index 0000000..1a9e619
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMultipleOfChangeInRequestValidator.java
@@ -0,0 +1,56 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+
+import java.math.BigDecimal;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInParameter;
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInRequestBody;
+
+public class SchemaMultipleOfChangeInRequestValidator extends SchemaPropertyChangeValidator<BigDecimal> {
+
+  @Override
+  protected BigDecimal getProperty(Schema schema) {
+    return schema.getMultipleOf();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "multipleOf";
+  }
+
+  @Override
+  protected String getMessage(BigDecimal leftProperty, BigDecimal rightProperty) {
+    return "新值必须==旧值或是旧值的因子";
+  }
+
+  @Override
+  protected boolean isAllowed(BigDecimal leftProperty, BigDecimal rightProperty) {
+    return BigDecimal.ZERO.compareTo(leftProperty.divideAndRemainder(rightProperty)[1]) == 0;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInParameter(context) || isInRequestBody(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaNullableChangeInRequestValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaNullableChangeInRequestValidator.java
new file mode 100755
index 0000000..abebca1
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaNullableChangeInRequestValidator.java
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.util.ChangeRangeCheckUtils;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+import org.apache.commons.lang3.ObjectUtils;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInParameter;
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInRequestBody;
+import static java.util.Collections.singletonList;
+
+public class SchemaNullableChangeInRequestValidator extends SchemaPropertyChangeValidator<Boolean> {
+
+  @Override
+  protected Boolean getProperty(Schema schema) {
+    return ObjectUtils.defaultIfNull(schema.getNullable(), Boolean.FALSE);
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "nullable";
+  }
+
+  @Override
+  protected boolean isAllowed(Boolean leftProperty, Boolean rightProperty) {
+    return ChangeRangeCheckUtils
+      .isNotViolated(leftProperty, rightProperty, singletonList(new Object[] { false, true }));
+  }
+
+  @Override
+  protected String getMessage(Boolean leftProperty, Boolean rightProperty) {
+    return "仅允许false->true的修改";
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInParameter(context) || isInRequestBody(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaRequiredChangeInRequestValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaRequiredChangeInRequestValidator.java
new file mode 100755
index 0000000..c090054
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaRequiredChangeInRequestValidator.java
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+import org.apache.commons.lang3.ObjectUtils;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInParameter;
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInRequestBody;
+import static java.util.Collections.emptyList;
+
+public class SchemaRequiredChangeInRequestValidator extends SchemaPropertyChangeValidator<List<String>> {
+
+  @Override
+  protected List<String> getProperty(Schema schema) {
+    return ObjectUtils.defaultIfNull(schema.getRequired(), emptyList());
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "required";
+  }
+
+  @Override
+  protected boolean isAllowed(List<String> leftProperty, List<String> rightProperty) {
+    return leftProperty.containsAll(rightProperty);
+  }
+
+  @Override
+  protected String getMessage(List<String> leftProperty, List<String> rightProperty) {
+    return "不允许新增required字段";
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInParameter(context) || isInRequestBody(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaTypeFormatChangeInRequestValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaTypeFormatChangeInRequestValidator.java
new file mode 100755
index 0000000..742e151
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaTypeFormatChangeInRequestValidator.java
@@ -0,0 +1,75 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaTypeFormatChangeValidator;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.TypeFormat;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInParameter;
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInRequestBody;
+
+public class SchemaTypeFormatChangeInRequestValidator extends SchemaTypeFormatChangeValidator {
+
+  private static final List<Object[]> allowedChangedList;
+
+  static {
+    Object[][] allowedChange = new Object[][] {
+      new Object[] { new TypeFormat("integer", null), new TypeFormat("integer", "int64") },
+      new Object[] { new TypeFormat("integer", null), new TypeFormat("number", "double") },
+      new Object[] { new TypeFormat("integer", null), new TypeFormat("number", null) },
+
+      new Object[] { new TypeFormat("integer", "int32"), new TypeFormat("integer", "int64") },
+      new Object[] { new TypeFormat("integer", "int32"), new TypeFormat("integer", null) },
+      new Object[] { new TypeFormat("integer", "int32"), new TypeFormat("number", "float") },
+      new Object[] { new TypeFormat("integer", "int32"), new TypeFormat("number", "double") },
+      new Object[] { new TypeFormat("integer", "int32"), new TypeFormat("number", null) },
+
+      new Object[] { new TypeFormat("integer", "int64"), new TypeFormat("integer", null) },
+      new Object[] { new TypeFormat("integer", "int64"), new TypeFormat("number", "double") },
+      new Object[] { new TypeFormat("integer", "int64"), new TypeFormat("number", null) },
+
+      new Object[] { new TypeFormat("number", null), new TypeFormat("number", "double") },
+
+      new Object[] { new TypeFormat("number", "float"), new TypeFormat("number", null) },
+      new Object[] { new TypeFormat("number", "float"), new TypeFormat("number", "double") },
+
+      new Object[] { new TypeFormat("number", "double"), new TypeFormat("number", null) },
+
+      new Object[] { new TypeFormat("string", null), new TypeFormat("string", "password") },
+
+      new Object[] { new TypeFormat("string", "password"), new TypeFormat("string", null) },
+    };
+    allowedChangedList = Collections.unmodifiableList(Arrays.asList(allowedChange));
+  }
+
+  @Override
+  protected List<Object[]> getAllowedChangedList() {
+    return allowedChangedList;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInRequestBody(context) || isInParameter(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaUniqueItemsChangeInRequestValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaUniqueItemsChangeInRequestValidator.java
new file mode 100755
index 0000000..de69be0
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaUniqueItemsChangeInRequestValidator.java
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.util.ChangeRangeCheckUtils;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInParameter;
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInRequestBody;
+import static java.util.Collections.singletonList;
+
+public class SchemaUniqueItemsChangeInRequestValidator extends SchemaPropertyChangeValidator<Boolean> {
+
+  @Override
+  protected Boolean getProperty(Schema schema) {
+    return schema.getUniqueItems();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "uniqueItems";
+  }
+
+  @Override
+  protected boolean isAllowed(Boolean leftProperty, Boolean rightProperty) {
+    return ChangeRangeCheckUtils
+      .isNotViolated(leftProperty, rightProperty, singletonList(new Object[] { true, false }));
+  }
+
+  @Override
+  protected String getMessage(Boolean leftProperty, Boolean rightProperty) {
+    return "仅允许true->false的修改";
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInParameter(context) || isInRequestBody(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaEnumChangeInResponseValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaEnumChangeInResponseValidator.java
new file mode 100755
index 0000000..0656f83
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaEnumChangeInResponseValidator.java
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+import org.apache.commons.lang3.ObjectUtils;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInResponse;
+import static java.util.Collections.emptyList;
+
+public class SchemaEnumChangeInResponseValidator extends SchemaPropertyChangeValidator<List> {
+
+  @Override
+  protected List getProperty(Schema schema) {
+    return ObjectUtils.defaultIfNull(schema.getEnum(), emptyList());
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "enum";
+  }
+
+  @Override
+  protected boolean isAllowed(List leftProperty, List rightProperty) {
+    return leftProperty.containsAll(rightProperty);
+  }
+
+  @Override
+  protected String getMessage(List leftProperty, List rightProperty) {
+    return "不允许新增enum";
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInResponse(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaExclusiveMaximumChangeInResponseValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaExclusiveMaximumChangeInResponseValidator.java
new file mode 100755
index 0000000..5c0084d
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaExclusiveMaximumChangeInResponseValidator.java
@@ -0,0 +1,59 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.util.ChangeRangeCheckUtils;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+import org.apache.commons.lang3.ObjectUtils;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInResponse;
+import static java.util.Collections.singletonList;
+
+public class SchemaExclusiveMaximumChangeInResponseValidator extends SchemaPropertyChangeValidator<Boolean> {
+
+  @Override
+  protected Boolean getProperty(Schema schema) {
+    return ObjectUtils.defaultIfNull(schema.getExclusiveMaximum(), Boolean.FALSE);
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "exclusiveMaximum";
+  }
+
+  @Override
+  protected boolean isAllowed(Boolean leftProperty, Boolean rightProperty) {
+
+    return ChangeRangeCheckUtils
+      .isNotViolated(leftProperty, rightProperty, singletonList(new Object[] { false, true }));
+
+  }
+
+  @Override
+  protected String getMessage(Boolean leftProperty, Boolean rightProperty) {
+    return "仅允许false->true的修改";
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInResponse(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaExclusiveMinimumChangeInResponseValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaExclusiveMinimumChangeInResponseValidator.java
new file mode 100755
index 0000000..25ce187
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaExclusiveMinimumChangeInResponseValidator.java
@@ -0,0 +1,59 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.util.ChangeRangeCheckUtils;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+import org.apache.commons.lang3.ObjectUtils;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInResponse;
+import static java.util.Collections.singletonList;
+
+public class SchemaExclusiveMinimumChangeInResponseValidator extends SchemaPropertyChangeValidator<Boolean> {
+
+  @Override
+  protected Boolean getProperty(Schema schema) {
+    return ObjectUtils.defaultIfNull(schema.getExclusiveMinimum(), Boolean.FALSE);
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "exclusiveMinimum";
+  }
+
+  @Override
+  protected boolean isAllowed(Boolean leftProperty, Boolean rightProperty) {
+
+    return ChangeRangeCheckUtils
+      .isNotViolated(leftProperty, rightProperty, singletonList(new Object[] { false, true }));
+
+  }
+
+  @Override
+  protected String getMessage(Boolean leftProperty, Boolean rightProperty) {
+    return "仅允许false->true的修改";
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInResponse(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaxItemsChangeInResponseValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaxItemsChangeInResponseValidator.java
new file mode 100755
index 0000000..037bd3f
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaxItemsChangeInResponseValidator.java
@@ -0,0 +1,54 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.*;
+
+public class SchemaMaxItemsChangeInResponseValidator extends SchemaPropertyChangeValidator<Integer> {
+
+  @Override
+  protected Integer getProperty(Schema schema) {
+    return schema.getMaxItems();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "maxItems";
+  }
+
+  @Override
+  protected boolean isAllowed(Integer leftProperty, Integer rightProperty) {
+    return rightProperty.compareTo(leftProperty) <= 0;
+  }
+
+  @Override
+  protected String getMessage(Integer leftProperty, Integer rightProperty) {
+    return DiffViolationMessages.NEW_NOT_LTE_OLD;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInResponse(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaxLengthChangeInResponseValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaxLengthChangeInResponseValidator.java
new file mode 100755
index 0000000..9f292af
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaxLengthChangeInResponseValidator.java
@@ -0,0 +1,54 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.*;
+
+public class SchemaMaxLengthChangeInResponseValidator extends SchemaPropertyChangeValidator<Integer> {
+
+  @Override
+  protected Integer getProperty(Schema schema) {
+    return schema.getMaxLength();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "maxLength";
+  }
+
+  @Override
+  protected boolean isAllowed(Integer leftProperty, Integer rightProperty) {
+    return rightProperty.compareTo(leftProperty) <= 0;
+  }
+
+  @Override
+  protected String getMessage(Integer leftProperty, Integer rightProperty) {
+    return DiffViolationMessages.NEW_NOT_LTE_OLD;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInResponse(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaxPropertiesChangeInResponseValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaxPropertiesChangeInResponseValidator.java
new file mode 100755
index 0000000..77d7f3c
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaxPropertiesChangeInResponseValidator.java
@@ -0,0 +1,54 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInResponse;
+
+public class SchemaMaxPropertiesChangeInResponseValidator extends SchemaPropertyChangeValidator<Integer> {
+
+  @Override
+  protected Integer getProperty(Schema schema) {
+    return schema.getMaxProperties();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "maxProperties";
+  }
+
+  @Override
+  protected boolean isAllowed(Integer leftProperty, Integer rightProperty) {
+    return rightProperty.compareTo(leftProperty) <= 0;
+  }
+
+  @Override
+  protected String getMessage(Integer leftProperty, Integer rightProperty) {
+    return DiffViolationMessages.NEW_NOT_LTE_OLD;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInResponse(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaximumChangeInResponseValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaximumChangeInResponseValidator.java
new file mode 100755
index 0000000..65f8b88
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaximumChangeInResponseValidator.java
@@ -0,0 +1,56 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+
+import java.math.BigDecimal;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInResponse;
+
+public class SchemaMaximumChangeInResponseValidator extends SchemaPropertyChangeValidator<BigDecimal> {
+
+  @Override
+  protected BigDecimal getProperty(Schema schema) {
+    return schema.getMaximum();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "maximum";
+  }
+
+  @Override
+  protected boolean isAllowed(BigDecimal leftProperty, BigDecimal rightProperty) {
+    return rightProperty.compareTo(leftProperty) <= 0;
+  }
+
+  @Override
+  protected String getMessage(BigDecimal leftProperty, BigDecimal rightProperty) {
+    return DiffViolationMessages.NEW_NOT_LTE_OLD;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInResponse(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinItemsChangeInResponseValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinItemsChangeInResponseValidator.java
new file mode 100755
index 0000000..9823fdc
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinItemsChangeInResponseValidator.java
@@ -0,0 +1,54 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInResponse;
+
+public class SchemaMinItemsChangeInResponseValidator extends SchemaPropertyChangeValidator<Integer> {
+
+  @Override
+  protected Integer getProperty(Schema schema) {
+    return schema.getMinItems();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "minItems";
+  }
+
+  @Override
+  protected boolean isAllowed(Integer leftProperty, Integer rightProperty) {
+    return rightProperty.compareTo(leftProperty) >= 0;
+  }
+
+  @Override
+  protected String getMessage(Integer leftProperty, Integer rightProperty) {
+    return DiffViolationMessages.NEW_NOT_GTE_OLD;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInResponse(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinLengthChangeInResponseValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinLengthChangeInResponseValidator.java
new file mode 100755
index 0000000..461a32d
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinLengthChangeInResponseValidator.java
@@ -0,0 +1,54 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInResponse;
+
+public class SchemaMinLengthChangeInResponseValidator extends SchemaPropertyChangeValidator<Integer> {
+
+  @Override
+  protected Integer getProperty(Schema schema) {
+    return schema.getMinLength();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "minLength";
+  }
+
+  @Override
+  protected boolean isAllowed(Integer leftProperty, Integer rightProperty) {
+    return rightProperty.compareTo(leftProperty) >= 0;
+  }
+
+  @Override
+  protected String getMessage(Integer leftProperty, Integer rightProperty) {
+    return DiffViolationMessages.NEW_NOT_GTE_OLD;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInResponse(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinPropertiesChangeInResponseValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinPropertiesChangeInResponseValidator.java
new file mode 100755
index 0000000..eac3764
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinPropertiesChangeInResponseValidator.java
@@ -0,0 +1,54 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInResponse;
+
+public class SchemaMinPropertiesChangeInResponseValidator extends SchemaPropertyChangeValidator<Integer> {
+
+  @Override
+  protected Integer getProperty(Schema schema) {
+    return schema.getMinProperties();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "minProperties";
+  }
+
+  @Override
+  protected boolean isAllowed(Integer leftProperty, Integer rightProperty) {
+    return rightProperty.compareTo(leftProperty) >= 0;
+  }
+
+  @Override
+  protected String getMessage(Integer leftProperty, Integer rightProperty) {
+    return DiffViolationMessages.NEW_NOT_GTE_OLD;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInResponse(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinimumChangeInResponseValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinimumChangeInResponseValidator.java
new file mode 100755
index 0000000..055034c
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinimumChangeInResponseValidator.java
@@ -0,0 +1,56 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+
+import java.math.BigDecimal;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.*;
+
+public class SchemaMinimumChangeInResponseValidator extends SchemaPropertyChangeValidator<BigDecimal> {
+
+  @Override
+  protected BigDecimal getProperty(Schema schema) {
+    return schema.getMinimum();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "minimum";
+  }
+
+  @Override
+  protected boolean isAllowed(BigDecimal leftProperty, BigDecimal rightProperty) {
+    return rightProperty.compareTo(leftProperty) >= 0;
+  }
+
+  @Override
+  protected String getMessage(BigDecimal leftProperty, BigDecimal rightProperty) {
+    return DiffViolationMessages.NEW_NOT_GTE_OLD;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInResponse(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMultipleOfChangeInResponseValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMultipleOfChangeInResponseValidator.java
new file mode 100755
index 0000000..0614ecb
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMultipleOfChangeInResponseValidator.java
@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+
+import java.math.BigDecimal;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInResponse;
+
+public class SchemaMultipleOfChangeInResponseValidator extends SchemaPropertyChangeValidator<BigDecimal> {
+
+  @Override
+  protected BigDecimal getProperty(Schema schema) {
+    return schema.getMultipleOf();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "multipleOf";
+  }
+
+  @Override
+  protected String getMessage(BigDecimal leftProperty, BigDecimal rightProperty) {
+    return "新值必须==旧值或是旧值的倍数";
+  }
+
+  @Override
+  protected boolean isAllowed(BigDecimal leftProperty, BigDecimal rightProperty) {
+    return BigDecimal.ZERO.compareTo(rightProperty.divideAndRemainder(leftProperty)[1]) == 0;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInResponse(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaNullableChangeInResponseValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaNullableChangeInResponseValidator.java
new file mode 100755
index 0000000..2c69efb
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaNullableChangeInResponseValidator.java
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.util.ChangeRangeCheckUtils;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+import org.apache.commons.lang3.ObjectUtils;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInResponse;
+import static java.util.Collections.singletonList;
+
+public class SchemaNullableChangeInResponseValidator extends SchemaPropertyChangeValidator<Boolean> {
+
+  @Override
+  protected Boolean getProperty(Schema schema) {
+    return ObjectUtils.defaultIfNull(schema.getNullable(), Boolean.FALSE);
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "nullable";
+  }
+
+  @Override
+  protected boolean isAllowed(Boolean leftProperty, Boolean rightProperty) {
+    return ChangeRangeCheckUtils
+      .isNotViolated(leftProperty, rightProperty, singletonList(new Object[] { true, false }));
+  }
+
+  @Override
+  protected String getMessage(Boolean leftProperty, Boolean rightProperty) {
+    return "仅允许true->false的修改";
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInResponse(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaRequiredChangeInResponseValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaRequiredChangeInResponseValidator.java
new file mode 100755
index 0000000..7f64f45
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaRequiredChangeInResponseValidator.java
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+import org.apache.commons.lang3.ObjectUtils;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInResponse;
+import static java.util.Collections.emptyList;
+
+public class SchemaRequiredChangeInResponseValidator extends SchemaPropertyChangeValidator<List<String>> {
+
+  @Override
+  protected List<String> getProperty(Schema schema) {
+    return ObjectUtils.defaultIfNull(schema.getRequired(), emptyList());
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "required";
+  }
+
+  @Override
+  protected boolean isAllowed(List<String> leftProperty, List<String> rightProperty) {
+    return rightProperty.containsAll(leftProperty);
+  }
+
+  @Override
+  protected String getMessage(List<String> leftProperty, List<String> rightProperty) {
+    return "不允许删除required字段";
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInResponse(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaTypeFormatChangeInResponseValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaTypeFormatChangeInResponseValidator.java
new file mode 100755
index 0000000..264c1c2
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaTypeFormatChangeInResponseValidator.java
@@ -0,0 +1,65 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaTypeFormatChangeValidator;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.TypeFormat;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInResponse;
+
+public class SchemaTypeFormatChangeInResponseValidator extends SchemaTypeFormatChangeValidator {
+
+  private static final List<Object[]> allowedChangedList;
+
+  static {
+    Object[][] allowedChange = new Object[][] {
+      new Object[] { new TypeFormat("integer", null), new TypeFormat("integer", "int64") },
+      new Object[] { new TypeFormat("integer", null), new TypeFormat("integer", "int32") },
+
+      new Object[] { new TypeFormat("integer", "int64"), new TypeFormat("integer", null) },
+      new Object[] { new TypeFormat("integer", "int64"), new TypeFormat("integer", "int32") },
+
+      new Object[] { new TypeFormat("number", null), new TypeFormat("number", "double") },
+      new Object[] { new TypeFormat("number", null), new TypeFormat("number", "float") },
+
+      new Object[] { new TypeFormat("number", "double"), new TypeFormat("number", null) },
+      new Object[] { new TypeFormat("number", "double"), new TypeFormat("number", "float") },
+
+      new Object[] { new TypeFormat("string", null), new TypeFormat("string", "password") },
+
+      new Object[] { new TypeFormat("string", "password"), new TypeFormat("string", null) },
+    };
+    allowedChangedList = Collections.unmodifiableList(Arrays.asList(allowedChange));
+  }
+
+  @Override
+  protected List<Object[]> getAllowedChangedList() {
+    return allowedChangedList;
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInResponse(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaUniqueItemsChangeInResponseValidator.java b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaUniqueItemsChangeInResponseValidator.java
new file mode 100755
index 0000000..372dae7
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/main/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaUniqueItemsChangeInResponseValidator.java
@@ -0,0 +1,56 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.util.ChangeRangeCheckUtils;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.SchemaPropertyChangeValidator;
+import io.swagger.v3.oas.models.media.Schema;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.isInResponse;
+import static java.util.Collections.singletonList;
+
+public class SchemaUniqueItemsChangeInResponseValidator extends SchemaPropertyChangeValidator<Boolean> {
+
+  @Override
+  protected Boolean getProperty(Schema schema) {
+    return schema.getUniqueItems();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "uniqueItems";
+  }
+
+  @Override
+  protected boolean isAllowed(Boolean leftProperty, Boolean rightProperty) {
+    return ChangeRangeCheckUtils
+      .isNotViolated(leftProperty, rightProperty, singletonList(new Object[] { false, true }));
+  }
+
+  @Override
+  protected String getMessage(Boolean leftProperty, Boolean rightProperty) {
+    return "仅允许false->true的修改";
+  }
+
+  @Override
+  protected boolean needValidate(OasDiffValidationContext context) {
+    return isInResponse(context);
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/OasCompatibilityTestBase.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/OasCompatibilityTestBase.java
new file mode 100755
index 0000000..efbf135
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/OasCompatibilityTestBase.java
@@ -0,0 +1,37 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.test.OasDiffValidatorTestBase;
+import io.swagger.v3.parser.core.models.ParseOptions;
+
+public class OasCompatibilityTestBase extends OasDiffValidatorTestBase {
+
+  @Override
+  protected ParseOptions createParseOptions() {
+
+    ParseOptions parseOptions = new ParseOptions();
+    parseOptions.setResolve(true);
+    parseOptions.setResolveCombinators(true);
+    parseOptions.setResolveFully(true);
+    parseOptions.setFlatten(false);
+    return parseOptions;
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingAddNotAllowedDiffValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingAddNotAllowedDiffValidatorTest.java
new file mode 100755
index 0000000..b653655
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingAddNotAllowedDiffValidatorTest.java
@@ -0,0 +1,77 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.encoding;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.EncodingDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = EncodingAddNotAllowedDiffValidatorTest.TestConfiguration.class)
+public class EncodingAddNotAllowedDiffValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-encoding-add-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-encoding-add-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationRight(
+          DiffViolationMessages.OP_ADD_FORBIDDEN,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/x-www-form-urlencoded'", MEDIA_TYPE,
+            "encoding.'bar'", ENCODING
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public EncodingDiffValidator encodingAddNotAllowedDiffValidator() {
+
+      return new EncodingAddNotAllowedDiffValidator();
+    }
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingAllowedReservedChangeDiffValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingAllowedReservedChangeDiffValidatorTest.java
new file mode 100755
index 0000000..d9d640f
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingAllowedReservedChangeDiffValidatorTest.java
@@ -0,0 +1,89 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.encoding;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.EncodingDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = EncodingAllowedReservedChangeDiffValidatorTest.TestConfiguration.class)
+public class EncodingAllowedReservedChangeDiffValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-encoding-allow-reserved-a.yaml");
+    System.out.println(leftOpenAPI.toString());
+    OpenAPI rightOpenAPI = loadRelative("petstore-encoding-allow-reserved-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolation(
+          "仅允许false->true的修改",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/x-www-form-urlencoded'", MEDIA_TYPE,
+            "encoding.'foo'", ENCODING,
+            "allowReserved", null
+          },
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/x-www-form-urlencoded'", MEDIA_TYPE,
+            "encoding.'foo'", ENCODING,
+            "allowReserved", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public EncodingDiffValidator encodingAllowedReservedChangeDiffValidator() {
+
+      return new EncodingAllowedReservedChangeDiffValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingContentTypeNotSameDiffValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingContentTypeNotSameDiffValidatorTest.java
new file mode 100755
index 0000000..b054967
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingContentTypeNotSameDiffValidatorTest.java
@@ -0,0 +1,88 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.encoding;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.EncodingDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = EncodingContentTypeNotSameDiffValidatorTest.TestConfiguration.class)
+public class EncodingContentTypeNotSameDiffValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-encoding-content-type-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-encoding-content-type-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolation(
+          DiffViolationMessages.NEW_NOT_EQ_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/x-www-form-urlencoded'", MEDIA_TYPE,
+            "encoding.'foo'", ENCODING,
+            "contentType", null
+          },
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/x-www-form-urlencoded'", MEDIA_TYPE,
+            "encoding.'foo'", ENCODING,
+            "contentType", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public EncodingDiffValidator encodingContentTypeNotSameDiffValidator() {
+
+      return new EncodingContentTypeNotSameDiffValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingDelNotAllowedDiffValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingDelNotAllowedDiffValidatorTest.java
new file mode 100755
index 0000000..444f667
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingDelNotAllowedDiffValidatorTest.java
@@ -0,0 +1,77 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.encoding;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.EncodingDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = EncodingDelNotAllowedDiffValidatorTest.TestConfiguration.class)
+public class EncodingDelNotAllowedDiffValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-encoding-del-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-encoding-del-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationLeft(
+          DiffViolationMessages.OP_DEL_FORBIDDEN,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/x-www-form-urlencoded'", MEDIA_TYPE,
+            "encoding.'bar'", ENCODING
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public EncodingDiffValidator encodingDelNotAllowedDiffValidator() {
+
+      return new EncodingDelNotAllowedDiffValidator();
+    }
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingExplodeNotSameDiffValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingExplodeNotSameDiffValidatorTest.java
new file mode 100755
index 0000000..32659ed
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingExplodeNotSameDiffValidatorTest.java
@@ -0,0 +1,88 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.encoding;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.EncodingDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = EncodingExplodeNotSameDiffValidatorTest.TestConfiguration.class)
+public class EncodingExplodeNotSameDiffValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-encoding-explode-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-encoding-explode-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolation(
+          DiffViolationMessages.NEW_NOT_EQ_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/x-www-form-urlencoded'", MEDIA_TYPE,
+            "encoding.'foo'", ENCODING,
+            "explode", null
+          },
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/x-www-form-urlencoded'", MEDIA_TYPE,
+            "encoding.'foo'", ENCODING,
+            "explode", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public EncodingDiffValidator encodingExplodeNotSameDiffValidator() {
+
+      return new EncodingExplodeNotSameDiffValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingStyleNotSameDiffValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingStyleNotSameDiffValidatorTest.java
new file mode 100755
index 0000000..6cc0d44
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/EncodingStyleNotSameDiffValidatorTest.java
@@ -0,0 +1,88 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.encoding;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.EncodingDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = EncodingStyleNotSameDiffValidatorTest.TestConfiguration.class)
+public class EncodingStyleNotSameDiffValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-encoding-style-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-encoding-style-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolation(
+          DiffViolationMessages.NEW_NOT_EQ_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/x-www-form-urlencoded'", MEDIA_TYPE,
+            "encoding.'foo'", ENCODING,
+            "style", null
+          },
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/x-www-form-urlencoded'", MEDIA_TYPE,
+            "encoding.'foo'", ENCODING,
+            "style", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public EncodingDiffValidator encodingStyleNotSameDiffValidator() {
+
+      return new EncodingStyleNotSameDiffValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/HeaderAddInRequestBodyNotAllowedDiffValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/HeaderAddInRequestBodyNotAllowedDiffValidatorTest.java
new file mode 100755
index 0000000..77283fb
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/HeaderAddInRequestBodyNotAllowedDiffValidatorTest.java
@@ -0,0 +1,79 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.header;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.HeaderDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = HeaderAddInRequestBodyNotAllowedDiffValidatorTest.TestConfiguration.class)
+public class HeaderAddInRequestBodyNotAllowedDiffValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-header-add-in-request-body-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-header-add-in-request-body-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationRight(
+          DiffViolationMessages.OP_ADD_FORBIDDEN,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/x-www-form-urlencoded'", MEDIA_TYPE,
+            "encoding.'foo'", ENCODING,
+            "headers.'X-Foo'", HEADER
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public HeaderDiffValidator headerAddInRequestBodyNotAllowed() {
+
+      return new HeaderAddInRequestBodyNotAllowedDiffValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/HeaderDelInResponseNotAllowedDiffValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/HeaderDelInResponseNotAllowedDiffValidatorTest.java
new file mode 100755
index 0000000..f5c9477
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/HeaderDelInResponseNotAllowedDiffValidatorTest.java
@@ -0,0 +1,78 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.header;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.HeaderDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = HeaderDelInResponseNotAllowedDiffValidatorTest.TestConfiguration.class)
+public class HeaderDelInResponseNotAllowedDiffValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-header-del-in-response-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-header-del-in-response-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationLeft(
+          DiffViolationMessages.OP_DEL_FORBIDDEN,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "responses", RESPONSES,
+            "200", RESPONSE,
+            "headers.'X-Bar'", HEADER
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public HeaderDiffValidator headerDelInResponseNotAllowed() {
+
+      return new HeaderDelInResponseNotAllowedDiffValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeAddInParameterNotAllowedDiffValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeAddInParameterNotAllowedDiffValidatorTest.java
new file mode 100755
index 0000000..24391c7
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeAddInParameterNotAllowedDiffValidatorTest.java
@@ -0,0 +1,77 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.mediatype;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.MediaTypeDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = MediaTypeAddInParameterNotAllowedDiffValidatorTest.TestConfiguration.class)
+public class MediaTypeAddInParameterNotAllowedDiffValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-media-type-add-in-parameter-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-media-type-add-in-parameter-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationRight(
+          DiffViolationMessages.OP_ADD_FORBIDDEN,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[0]", PARAMETER,
+            "content.'application/json'", MEDIA_TYPE
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public MediaTypeDiffValidator mediaTypeAddInParameterNotAllowedDiffValidator() {
+
+      return new MediaTypeAddInParameterNotAllowedDiffValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeDelInParameterNotAllowedDiffValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeDelInParameterNotAllowedDiffValidatorTest.java
new file mode 100755
index 0000000..06b07cd
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeDelInParameterNotAllowedDiffValidatorTest.java
@@ -0,0 +1,77 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.mediatype;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.MediaTypeDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = MediaTypeDelInParameterNotAllowedDiffValidatorTest.TestConfiguration.class)
+public class MediaTypeDelInParameterNotAllowedDiffValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-media-type-del-in-parameter-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-media-type-del-in-parameter-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationLeft(
+          DiffViolationMessages.OP_DEL_FORBIDDEN,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[0]", PARAMETER,
+            "content.'application/json'", MEDIA_TYPE
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public MediaTypeDiffValidator mediaTypeDelInParameterNotAllowedDiffValidator() {
+
+      return new MediaTypeDelInParameterNotAllowedDiffValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeDelInRequestBodyNotAllowedDiffValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeDelInRequestBodyNotAllowedDiffValidatorTest.java
new file mode 100755
index 0000000..eb62a01
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeDelInRequestBodyNotAllowedDiffValidatorTest.java
@@ -0,0 +1,77 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.mediatype;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.MediaTypeDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = MediaTypeDelInRequestBodyNotAllowedDiffValidatorTest.TestConfiguration.class)
+public class MediaTypeDelInRequestBodyNotAllowedDiffValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-media-type-del-in-request-body-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-media-type-del-in-request-body-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationLeft(
+          DiffViolationMessages.OP_DEL_FORBIDDEN,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/json'", MEDIA_TYPE
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public MediaTypeDiffValidator mediaTypeDelInRequestBodyNotAllowedDiffValidator() {
+
+      return new MediaTypeDelInRequestBodyNotAllowedDiffValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeDelInResponseNotAllowedDiffValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeDelInResponseNotAllowedDiffValidatorTest.java
new file mode 100755
index 0000000..db8914a
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/MediaTypeDelInResponseNotAllowedDiffValidatorTest.java
@@ -0,0 +1,78 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.mediatype;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.MediaTypeDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = MediaTypeDelInResponseNotAllowedDiffValidatorTest.TestConfiguration.class)
+public class MediaTypeDelInResponseNotAllowedDiffValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-media-type-del-in-response-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-media-type-del-in-response-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationLeft(
+          DiffViolationMessages.OP_DEL_FORBIDDEN,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "responses", RESPONSES,
+            "200", RESPONSE,
+            "content.'application/xml'", MEDIA_TYPE
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public MediaTypeDiffValidator mediaTypeDelInResponseNotAllowedDiffValidator() {
+
+      return new MediaTypeDelInResponseNotAllowedDiffValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/OperationDeleteNotAllowedDiffValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/OperationDeleteNotAllowedDiffValidatorTest.java
new file mode 100755
index 0000000..8cfb32d
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/OperationDeleteNotAllowedDiffValidatorTest.java
@@ -0,0 +1,74 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.operation;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OperationDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = OperationDeleteNotAllowedDiffValidatorTest.TestConfiguration.class)
+public class OperationDeleteNotAllowedDiffValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-operation-delete-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-operation-delete-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationLeft(
+          DiffViolationMessages.OP_DEL_FORBIDDEN,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public OperationDiffValidator operationDeleteNotAllowedDiffValidator() {
+
+      return new OperationDeleteNotAllowedDiffValidator();
+    }
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/OperationIdNotSameDiffValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/OperationIdNotSameDiffValidatorTest.java
new file mode 100755
index 0000000..981ca2b
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/OperationIdNotSameDiffValidatorTest.java
@@ -0,0 +1,76 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.operation;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OperationDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = OperationIdNotSameDiffValidatorTest.TestConfiguration.class)
+public class OperationIdNotSameDiffValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-operation-id-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-operation-id-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_EQ_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "operationId", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public OperationDiffValidator operationIdNotSameDiffValidator() {
+
+      return new OperationIdNotSameDiffValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterAddDiffValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterAddDiffValidatorTest.java
new file mode 100755
index 0000000..0c9c9aa
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterAddDiffValidatorTest.java
@@ -0,0 +1,75 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ParameterDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = ParameterAddDiffValidatorTest.TestConfiguration.class)
+public class ParameterAddDiffValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-parameter-add-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-parameter-add-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationRight(
+          "[name=bar,in=query]:仅允许新增required=false的parameter",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[1]", PARAMETER,
+            "required", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public ParameterDiffValidator parameterAddDiffValidator() {
+
+      return new ParameterAddDiffValidator();
+    }
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterAllowEmptyValueChangeDiffValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterAllowEmptyValueChangeDiffValidatorTest.java
new file mode 100755
index 0000000..e16caa0
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterAllowEmptyValueChangeDiffValidatorTest.java
@@ -0,0 +1,83 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ParameterDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = ParameterAllowEmptyValueChangeDiffValidatorTest.TestConfiguration.class)
+public class ParameterAllowEmptyValueChangeDiffValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-parameter-allow-empty-value-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-parameter-allow-empty-value-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolation(
+          "[name=limit4,in=query]:仅允许false->true的修改",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[1]", PARAMETER,
+            "allowEmptyValue", null
+          },
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[2]", PARAMETER,
+            "allowEmptyValue", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public ParameterDiffValidator parameterAllowEmptyValueChangeDiffValidator() {
+
+      return new ParameterAllowEmptyValueChangeDiffValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterAllowReservedChangeDiffValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterAllowReservedChangeDiffValidatorTest.java
new file mode 100755
index 0000000..96f2a52
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterAllowReservedChangeDiffValidatorTest.java
@@ -0,0 +1,91 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ParameterDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = ParameterAllowReservedChangeDiffValidatorTest.TestConfiguration.class)
+public class ParameterAllowReservedChangeDiffValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+  }
+
+  /**
+   * TODO swagger parser对于allowReserved字段的反序列化存在问题,先跳过此测试
+   * https://github.com/swagger-api/swagger-parser/issues/1108
+   */
+  public void validateBroken() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-parameter-allow-reserved-a.yaml");
+    System.out.println(leftOpenAPI.toString());
+    OpenAPI rightOpenAPI = loadRelative("petstore-parameter-allow-reserved-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolation(
+          "[name=limit4,in=query]:仅允许false->true的修改",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[1]", PARAMETER,
+            "allowReserved", null
+          },
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[2]", PARAMETER,
+            "allowReserved", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public ParameterDiffValidator parameterAllowReservedChangeDiffValidator() {
+
+      return new ParameterAllowReservedChangeDiffValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterExplodeNotSameDiffValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterExplodeNotSameDiffValidatorTest.java
new file mode 100755
index 0000000..241ff67
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterExplodeNotSameDiffValidatorTest.java
@@ -0,0 +1,84 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ParameterDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = ParameterExplodeNotSameDiffValidatorTest.TestConfiguration.class)
+public class ParameterExplodeNotSameDiffValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-parameter-explode-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-parameter-explode-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolation(
+          "[name=limit,in=query]:" + DiffViolationMessages.NEW_NOT_EQ_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[0]", PARAMETER,
+            "explode", null
+          },
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[1]", PARAMETER,
+            "explode", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public ParameterDiffValidator parameterExplodeNotSameDiffValidator() {
+
+      return new ParameterExplodeNotSameDiffValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterRequiredChangeDiffValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterRequiredChangeDiffValidatorTest.java
new file mode 100755
index 0000000..b6535ab
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterRequiredChangeDiffValidatorTest.java
@@ -0,0 +1,83 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ParameterDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = ParameterRequiredChangeDiffValidatorTest.TestConfiguration.class)
+public class ParameterRequiredChangeDiffValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-parameter-required-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-parameter-required-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolation(
+          "[name=limit,in=query]:仅允许true->false的修改",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[0]", PARAMETER,
+            "required", null
+          },
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[1]", PARAMETER,
+            "required", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public ParameterDiffValidator parameterRequiredChangeDiffValidator() {
+
+      return new ParameterRequiredChangeDiffValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterStyleNotSameDiffValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterStyleNotSameDiffValidatorTest.java
new file mode 100755
index 0000000..3e6d061
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/ParameterStyleNotSameDiffValidatorTest.java
@@ -0,0 +1,84 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ParameterDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = ParameterStyleNotSameDiffValidatorTest.TestConfiguration.class)
+public class ParameterStyleNotSameDiffValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-parameter-style-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-parameter-style-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolation(
+          "[name=limit,in=query]:" + DiffViolationMessages.NEW_NOT_EQ_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[0]", PARAMETER,
+            "style", null
+          },
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[1]", PARAMETER,
+            "style", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public ParameterDiffValidator parameterStyleNotSameDiffValidator() {
+
+      return new ParameterStyleNotSameDiffValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/pathitem/PathItemDeleteNotAllowedDiffValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/pathitem/PathItemDeleteNotAllowedDiffValidatorTest.java
new file mode 100755
index 0000000..b0855d5
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/pathitem/PathItemDeleteNotAllowedDiffValidatorTest.java
@@ -0,0 +1,72 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.pathitem;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.PathItemDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.PATHS;
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.PATH_ITEM;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = PathItemDeleteNotAllowedDiffValidatorTest.TestConfiguration.class)
+public class PathItemDeleteNotAllowedDiffValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-path-item-delete-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-path-item-delete-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationLeft(
+          DiffViolationMessages.OP_DEL_FORBIDDEN,
+          new Object[] { "paths", PATHS, "/pets/{petId}", PATH_ITEM }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+
+    public PathItemDiffValidator pathItemDeleteNotAllowedValidator() {
+
+      return new PathItemDeleteNotAllowedDiffValidator();
+    }
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/requestbody/RequestBodyRequiredChangeDiffValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/requestbody/RequestBodyRequiredChangeDiffValidatorTest.java
new file mode 100755
index 0000000..a16bb42
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/requestbody/RequestBodyRequiredChangeDiffValidatorTest.java
@@ -0,0 +1,76 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.requestbody;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.RequestBodyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = RequestBodyRequiredChangeDiffValidatorTest.TestConfiguration.class)
+public class RequestBodyRequiredChangeDiffValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-request-body-required-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-request-body-required-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          "仅允许true->false的修改",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "required", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public RequestBodyDiffValidator requestBodyRequiredChangeDiffValidator() {
+
+      return new RequestBodyRequiredChangeDiffValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/response/ResponseAddNotAllowedDiffValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/response/ResponseAddNotAllowedDiffValidatorTest.java
new file mode 100755
index 0000000..fa24080
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/response/ResponseAddNotAllowedDiffValidatorTest.java
@@ -0,0 +1,83 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ResponseDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class ResponseAddNotAllowedDiffValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-response-add-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-response-add-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationRight(
+          DiffViolationMessages.OP_ADD_FORBIDDEN,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "responses", RESPONSES,
+            "302", RESPONSE
+          }
+        ),
+        createViolationRight(
+          DiffViolationMessages.OP_ADD_FORBIDDEN,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "responses", RESPONSES,
+            "default", RESPONSE
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public ResponseDiffValidator responseAddNotAllowedDiffValidator() {
+      return new ResponseAddNotAllowedDiffValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaDiscriminatorChangeValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaDiscriminatorChangeValidatorTest.java
new file mode 100755
index 0000000..3a44123
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaDiscriminatorChangeValidatorTest.java
@@ -0,0 +1,108 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaDiscriminatorChangeValidatorTest.TestConfiguration.class)
+public class SchemaDiscriminatorChangeValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-discriminator-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-discriminator-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_EQ_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "parameters[0]", PARAMETER,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "discriminator", null
+          }
+        ),
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_EQ_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "discriminator", null
+          }
+        ),
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_EQ_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "responses", RESPONSES,
+            "200", RESPONSE,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "discriminator", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaDiscriminatorChangeValidator() {
+
+      return new SchemaDiscriminatorChangeValidator();
+    }
+
+  }
+
+}
+
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaReadOnlyChangeValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaReadOnlyChangeValidatorTest.java
new file mode 100755
index 0000000..3317197
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaReadOnlyChangeValidatorTest.java
@@ -0,0 +1,108 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaReadOnlyChangeValidatorTest.TestConfiguration.class)
+public class SchemaReadOnlyChangeValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-read-only-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-read-only-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_EQ_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "parameters[0]", PARAMETER,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "readOnly", null
+          }
+        ),
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_EQ_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "readOnly", null
+          }
+        ),
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_EQ_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "responses", RESPONSES,
+            "200", RESPONSE,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "readOnly", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaReadOnlyChangeValidator() {
+
+      return new SchemaReadOnlyChangeValidator();
+    }
+
+  }
+
+}
+
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaWriteOnlyChangeValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaWriteOnlyChangeValidatorTest.java
new file mode 100755
index 0000000..ec2fe10
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaWriteOnlyChangeValidatorTest.java
@@ -0,0 +1,108 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaWriteOnlyChangeValidatorTest.TestConfiguration.class)
+public class SchemaWriteOnlyChangeValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-write-only-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-write-only-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_EQ_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "parameters[0]", PARAMETER,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "writeOnly", null
+          }
+        ),
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_EQ_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "writeOnly", null
+          }
+        ),
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_EQ_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "responses", RESPONSES,
+            "200", RESPONSE,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "writeOnly", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaWriteOnlyChangeValidator() {
+
+      return new SchemaWriteOnlyChangeValidator();
+    }
+
+  }
+
+}
+
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaXmlChangeValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaXmlChangeValidatorTest.java
new file mode 100755
index 0000000..93fb31a
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/SchemaXmlChangeValidatorTest.java
@@ -0,0 +1,108 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaXmlChangeValidatorTest.TestConfiguration.class)
+public class SchemaXmlChangeValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-xml-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-xml-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_EQ_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "parameters[0]", PARAMETER,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "xml", null
+          }
+        ),
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_EQ_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "xml", null
+          }
+        ),
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_EQ_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "post", OPERATION,
+            "responses", RESPONSES,
+            "200", RESPONSE,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "xml", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaXmlChangeValidator() {
+
+      return new SchemaXmlChangeValidator();
+    }
+
+  }
+
+}
+
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaEnumChangeInRequestValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaEnumChangeInRequestValidatorTest.java
new file mode 100755
index 0000000..67abd6d
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaEnumChangeInRequestValidatorTest.java
@@ -0,0 +1,92 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaEnumChangeInRequestValidatorTest.TestConfiguration.class)
+public class SchemaEnumChangeInRequestValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-enum-in-request-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-enum-in-request-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          "不允许删除enum",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[0]", PARAMETER,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "enum", null
+          }
+        ),
+        createViolationBoth(
+          "不允许删除enum",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "enum", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaEnumChangeInRequestValidator() {
+
+      return new SchemaEnumChangeInRequestValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaExclusiveMaximumChangeInRequestValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaExclusiveMaximumChangeInRequestValidatorTest.java
new file mode 100755
index 0000000..8d0ec1a
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaExclusiveMaximumChangeInRequestValidatorTest.java
@@ -0,0 +1,92 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaExclusiveMaximumChangeInRequestValidatorTest.TestConfiguration.class)
+public class SchemaExclusiveMaximumChangeInRequestValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-exclusive-maximum-in-request-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-exclusive-maximum-in-request-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          "仅允许true->false的修改",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[0]", PARAMETER,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "exclusiveMaximum", null
+          }
+        ),
+        createViolationBoth(
+          "仅允许true->false的修改",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "exclusiveMaximum", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaExclusiveMaximumChangeInRequestValidator() {
+
+      return new SchemaExclusiveMaximumChangeInRequestValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaExclusiveMinimumChangeInRequestValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaExclusiveMinimumChangeInRequestValidatorTest.java
new file mode 100755
index 0000000..2896312
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaExclusiveMinimumChangeInRequestValidatorTest.java
@@ -0,0 +1,92 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaExclusiveMinimumChangeInRequestValidatorTest.TestConfiguration.class)
+public class SchemaExclusiveMinimumChangeInRequestValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-exclusive-minimum-in-request-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-exclusive-minimum-in-request-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          "仅允许true->false的修改",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[0]", PARAMETER,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "exclusiveMinimum", null
+          }
+        ),
+        createViolationBoth(
+          "仅允许true->false的修改",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "exclusiveMinimum", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaExclusiveMinimumChangeInRequestValidator() {
+
+      return new SchemaExclusiveMinimumChangeInRequestValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaxItemsChangeInRequestValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaxItemsChangeInRequestValidatorTest.java
new file mode 100755
index 0000000..697327d
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaxItemsChangeInRequestValidatorTest.java
@@ -0,0 +1,93 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaMaxItemsChangeInRequestValidatorTest.TestConfiguration.class)
+public class SchemaMaxItemsChangeInRequestValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-max-items-in-request-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-max-items-in-request-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_GTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[0]", PARAMETER,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "maxItems", null
+          }
+        ),
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_GTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "maxItems", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaMaxItemsChangeInRequestValidator() {
+
+      return new SchemaMaxItemsChangeInRequestValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaxLengthChangeInRequestValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaxLengthChangeInRequestValidatorTest.java
new file mode 100755
index 0000000..04f2f80
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaxLengthChangeInRequestValidatorTest.java
@@ -0,0 +1,93 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaMaxLengthChangeInRequestValidatorTest.TestConfiguration.class)
+public class SchemaMaxLengthChangeInRequestValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-max-length-in-request-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-max-length-in-request-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_GTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[0]", PARAMETER,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "maxLength", null
+          }
+        ),
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_GTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "maxLength", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaMaxLengthChangeInRequestValidator() {
+
+      return new SchemaMaxLengthChangeInRequestValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaxPropertiesChangeInRequestValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaxPropertiesChangeInRequestValidatorTest.java
new file mode 100755
index 0000000..9e0b7e7
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaxPropertiesChangeInRequestValidatorTest.java
@@ -0,0 +1,93 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaMaxPropertiesChangeInRequestValidatorTest.TestConfiguration.class)
+public class SchemaMaxPropertiesChangeInRequestValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-max-properties-in-request-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-max-properties-in-request-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_GTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[0]", PARAMETER,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "maxProperties", null
+          }
+        ),
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_GTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "maxProperties", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaMaxPropertiesChangeInRequestValidator() {
+
+      return new SchemaMaxPropertiesChangeInRequestValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaximumChangeInRequestValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaximumChangeInRequestValidatorTest.java
new file mode 100755
index 0000000..5bb8662
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMaximumChangeInRequestValidatorTest.java
@@ -0,0 +1,93 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaMaximumChangeInRequestValidatorTest.TestConfiguration.class)
+public class SchemaMaximumChangeInRequestValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-maximum-in-request-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-maximum-in-request-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_GTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[0]", PARAMETER,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "maximum", null
+          }
+        ),
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_GTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "maximum", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaMaximumChangeInRequestValidator() {
+
+      return new SchemaMaximumChangeInRequestValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinItemsChangeInRequestValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinItemsChangeInRequestValidatorTest.java
new file mode 100755
index 0000000..0108780
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinItemsChangeInRequestValidatorTest.java
@@ -0,0 +1,93 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaMinItemsChangeInRequestValidatorTest.TestConfiguration.class)
+public class SchemaMinItemsChangeInRequestValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-min-items-in-request-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-min-items-in-request-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_LTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[0]", PARAMETER,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "minItems", null
+          }
+        ),
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_LTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "minItems", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaMinItemsChangeInRequestValidator() {
+
+      return new SchemaMinItemsChangeInRequestValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinLengthChangeInRequestValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinLengthChangeInRequestValidatorTest.java
new file mode 100755
index 0000000..e13f9bb
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinLengthChangeInRequestValidatorTest.java
@@ -0,0 +1,93 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaMinLengthChangeInRequestValidatorTest.TestConfiguration.class)
+public class SchemaMinLengthChangeInRequestValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-min-length-in-request-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-min-length-in-request-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_LTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[0]", PARAMETER,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "minLength", null
+          }
+        ),
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_LTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "minLength", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaMinLengthChangeInRequestValidator() {
+
+      return new SchemaMinLengthChangeInRequestValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinPropertiesChangeInRequestValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinPropertiesChangeInRequestValidatorTest.java
new file mode 100755
index 0000000..c3af44e
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinPropertiesChangeInRequestValidatorTest.java
@@ -0,0 +1,93 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaMinPropertiesChangeInRequestValidatorTest.TestConfiguration.class)
+public class SchemaMinPropertiesChangeInRequestValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-min-properties-in-request-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-min-properties-in-request-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_LTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[0]", PARAMETER,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "minProperties", null
+          }
+        ),
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_LTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "minProperties", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaMinPropertiesChangeInRequestValidator() {
+
+      return new SchemaMinPropertiesChangeInRequestValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinimumChangeInRequestValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinimumChangeInRequestValidatorTest.java
new file mode 100755
index 0000000..dfdb889
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMinimumChangeInRequestValidatorTest.java
@@ -0,0 +1,93 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaMinimumChangeInRequestValidatorTest.TestConfiguration.class)
+public class SchemaMinimumChangeInRequestValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-minimum-in-request-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-minimum-in-request-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_LTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[0]", PARAMETER,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "minimum", null
+          }
+        ),
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_LTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "minimum", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaMinimumChangeInRequestValidator() {
+
+      return new SchemaMinimumChangeInRequestValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMultipleOfChangeInRequestValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMultipleOfChangeInRequestValidatorTest.java
new file mode 100755
index 0000000..9bae7c6
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaMultipleOfChangeInRequestValidatorTest.java
@@ -0,0 +1,90 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaMultipleOfChangeInRequestValidatorTest.TestConfiguration.class)
+public class SchemaMultipleOfChangeInRequestValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-multiple-of-in-request-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-multiple-of-in-request-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          "新值必须==旧值或是旧值的因子",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[0]", PARAMETER,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "multipleOf", null
+          }
+        ),
+        createViolationBoth(
+          "新值必须==旧值或是旧值的因子",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "multipleOf", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaMultipleOfChangeValidator() {
+
+      return new SchemaMultipleOfChangeInRequestValidator();
+    }
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaNullableChangeInRequestValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaNullableChangeInRequestValidatorTest.java
new file mode 100755
index 0000000..da437cb
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaNullableChangeInRequestValidatorTest.java
@@ -0,0 +1,92 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaNullableChangeInRequestValidatorTest.TestConfiguration.class)
+public class SchemaNullableChangeInRequestValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-nullable-in-request-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-nullable-in-request-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          "仅允许false->true的修改",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[0]", PARAMETER,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "nullable", null
+          }
+        ),
+        createViolationBoth(
+          "仅允许false->true的修改",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "nullable", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaNullableChangeInRequestValidator() {
+
+      return new SchemaNullableChangeInRequestValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaRequiredChangeInRequestValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaRequiredChangeInRequestValidatorTest.java
new file mode 100755
index 0000000..ab6974b
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaRequiredChangeInRequestValidatorTest.java
@@ -0,0 +1,90 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaRequiredChangeInRequestValidatorTest.TestConfiguration.class)
+public class SchemaRequiredChangeInRequestValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-required-in-request-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-required-in-request-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          "不允许新增required字段",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[0]", PARAMETER,
+            "schema", SCHEMA,
+            "required", null
+          }
+        ),
+        createViolationBoth(
+          "不允许新增required字段",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "required", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaRequiredChangeInRequestValidator() {
+
+      return new SchemaRequiredChangeInRequestValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaTypeFormatChangeInRequestValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaTypeFormatChangeInRequestValidatorTest.java
new file mode 100755
index 0000000..f04d4d5
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaTypeFormatChangeInRequestValidatorTest.java
@@ -0,0 +1,91 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaTypeFormatChangeInRequestValidatorTest.TestConfiguration.class)
+public class SchemaTypeFormatChangeInRequestValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-type-format-in-request-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-type-format-in-request-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          "不允许(type=integer,format=null)->(type=string,format=null)的修改",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[0]", PARAMETER,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA
+          }
+        ),
+
+        createViolationBoth(
+          "不允许(type=integer,format=null)->(type=string,format=null)的修改",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaTypeFormatInRequestCompareValidator() {
+
+      return new SchemaTypeFormatChangeInRequestValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaUniqueItemsChangeInRequestValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaUniqueItemsChangeInRequestValidatorTest.java
new file mode 100755
index 0000000..4356b44
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/SchemaUniqueItemsChangeInRequestValidatorTest.java
@@ -0,0 +1,92 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.request;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaUniqueItemsChangeInRequestValidatorTest.TestConfiguration.class)
+public class SchemaUniqueItemsChangeInRequestValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-unique-items-in-request-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-unique-items-in-request-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          "仅允许true->false的修改",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "parameters[0]", PARAMETER,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "uniqueItems", null
+          }
+        ),
+        createViolationBoth(
+          "仅允许true->false的修改",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "requestBody", REQUEST_BODY,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "uniqueItems", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaUniqueItemsChangeInRequestValidator() {
+
+      return new SchemaUniqueItemsChangeInRequestValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaEnumChangeInResponseValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaEnumChangeInResponseValidatorTest.java
new file mode 100755
index 0000000..6b9c193
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaEnumChangeInResponseValidatorTest.java
@@ -0,0 +1,81 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaEnumChangeInResponseValidatorTest.TestConfiguration.class)
+public class SchemaEnumChangeInResponseValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-enum-in-response-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-enum-in-response-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          "不允许新增enum",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "responses", RESPONSES,
+            "200", RESPONSE,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "enum", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaEnumChangeInResponseValidator() {
+
+      return new SchemaEnumChangeInResponseValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaExclusiveMaximumChangeInResponseValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaExclusiveMaximumChangeInResponseValidatorTest.java
new file mode 100755
index 0000000..cb7ebec
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaExclusiveMaximumChangeInResponseValidatorTest.java
@@ -0,0 +1,81 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaExclusiveMaximumChangeInResponseValidatorTest.TestConfiguration.class)
+public class SchemaExclusiveMaximumChangeInResponseValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-exclusive-maximum-in-response-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-exclusive-maximum-in-response-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          "仅允许false->true的修改",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "responses", RESPONSES,
+            "200", RESPONSE,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "exclusiveMaximum", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaExclusiveMaximumChangeInResponseValidator() {
+
+      return new SchemaExclusiveMaximumChangeInResponseValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaExclusiveMinimumChangeInResponseValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaExclusiveMinimumChangeInResponseValidatorTest.java
new file mode 100755
index 0000000..93e7d0e
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaExclusiveMinimumChangeInResponseValidatorTest.java
@@ -0,0 +1,81 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaExclusiveMinimumChangeInResponseValidatorTest.TestConfiguration.class)
+public class SchemaExclusiveMinimumChangeInResponseValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-exclusive-minimum-in-response-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-exclusive-minimum-in-response-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          "仅允许false->true的修改",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "responses", RESPONSES,
+            "200", RESPONSE,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "exclusiveMinimum", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaExclusiveMinimumChangeInResponseValidator() {
+
+      return new SchemaExclusiveMinimumChangeInResponseValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaxItemsChangeInResponseValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaxItemsChangeInResponseValidatorTest.java
new file mode 100755
index 0000000..cff1702
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaxItemsChangeInResponseValidatorTest.java
@@ -0,0 +1,82 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaMaxItemsChangeInResponseValidatorTest.TestConfiguration.class)
+public class SchemaMaxItemsChangeInResponseValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-max-items-in-response-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-max-items-in-response-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_LTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "responses", RESPONSES,
+            "200", RESPONSE,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "maxItems", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaMaxItemsChangeInResponseValidator() {
+
+      return new SchemaMaxItemsChangeInResponseValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaxLengthChangeInResponseValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaxLengthChangeInResponseValidatorTest.java
new file mode 100755
index 0000000..9a1ffb8
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaxLengthChangeInResponseValidatorTest.java
@@ -0,0 +1,82 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaMaxLengthChangeInResponseValidatorTest.TestConfiguration.class)
+public class SchemaMaxLengthChangeInResponseValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-max-length-in-response-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-max-length-in-response-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_LTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "responses", RESPONSES,
+            "200", RESPONSE,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "maxLength", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaMaxLengthChangeInResponseValidator() {
+
+      return new SchemaMaxLengthChangeInResponseValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaxPropertiesChangeInResponseValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaxPropertiesChangeInResponseValidatorTest.java
new file mode 100755
index 0000000..cd7e957
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaxPropertiesChangeInResponseValidatorTest.java
@@ -0,0 +1,82 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaMaxPropertiesChangeInResponseValidatorTest.TestConfiguration.class)
+public class SchemaMaxPropertiesChangeInResponseValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-max-properties-in-response-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-max-properties-in-response-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_LTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "responses", RESPONSES,
+            "200", RESPONSE,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "maxProperties", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaMaxPropertiesChangeInResponseValidator() {
+
+      return new SchemaMaxPropertiesChangeInResponseValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaximumChangeInResponseValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaximumChangeInResponseValidatorTest.java
new file mode 100755
index 0000000..fb783e9
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMaximumChangeInResponseValidatorTest.java
@@ -0,0 +1,82 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaMaximumChangeInResponseValidatorTest.TestConfiguration.class)
+public class SchemaMaximumChangeInResponseValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-maximum-in-response-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-maximum-in-response-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_LTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "responses", RESPONSES,
+            "200", RESPONSE,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "maximum", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaMaximumChangeInResponseValidator() {
+
+      return new SchemaMaximumChangeInResponseValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinItemsChangeInResponseValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinItemsChangeInResponseValidatorTest.java
new file mode 100755
index 0000000..73d3a95
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinItemsChangeInResponseValidatorTest.java
@@ -0,0 +1,82 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaMinItemsChangeInResponseValidatorTest.TestConfiguration.class)
+public class SchemaMinItemsChangeInResponseValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-min-items-in-response-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-min-items-in-response-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_GTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "responses", RESPONSES,
+            "200", RESPONSE,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "minItems", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaMinItemsChangeInResponseValidator() {
+
+      return new SchemaMinItemsChangeInResponseValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinLengthChangeInResponseValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinLengthChangeInResponseValidatorTest.java
new file mode 100755
index 0000000..93e8cad
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinLengthChangeInResponseValidatorTest.java
@@ -0,0 +1,82 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaMinLengthChangeInResponseValidatorTest.TestConfiguration.class)
+public class SchemaMinLengthChangeInResponseValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-min-length-in-response-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-min-length-in-response-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_GTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "responses", RESPONSES,
+            "200", RESPONSE,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "minLength", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaMinLengthChangeInResponseValidator() {
+
+      return new SchemaMinLengthChangeInResponseValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinPropertiesChangeInResponseValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinPropertiesChangeInResponseValidatorTest.java
new file mode 100755
index 0000000..5580a23
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinPropertiesChangeInResponseValidatorTest.java
@@ -0,0 +1,82 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaMinPropertiesChangeInResponseValidatorTest.TestConfiguration.class)
+public class SchemaMinPropertiesChangeInResponseValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-min-properties-in-response-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-min-properties-in-response-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_GTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "responses", RESPONSES,
+            "200", RESPONSE,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "minProperties", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaMinPropertiesChangeInResponseValidator() {
+
+      return new SchemaMinPropertiesChangeInResponseValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinimumChangeInResponseValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinimumChangeInResponseValidatorTest.java
new file mode 100755
index 0000000..0e0f582
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMinimumChangeInResponseValidatorTest.java
@@ -0,0 +1,82 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.DiffViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaMinimumChangeInResponseValidatorTest.TestConfiguration.class)
+public class SchemaMinimumChangeInResponseValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-minimum-in-response-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-minimum-in-response-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          DiffViolationMessages.NEW_NOT_GTE_OLD,
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "responses", RESPONSES,
+            "200", RESPONSE,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "minimum", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaMinimumChangeInResponseValidator() {
+
+      return new SchemaMinimumChangeInResponseValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMultipleOfChangeInResponseValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMultipleOfChangeInResponseValidatorTest.java
new file mode 100755
index 0000000..fe3dd51
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaMultipleOfChangeInResponseValidatorTest.java
@@ -0,0 +1,79 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaMultipleOfChangeInResponseValidatorTest.TestConfiguration.class)
+public class SchemaMultipleOfChangeInResponseValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-multiple-of-in-response-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-multiple-of-in-response-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          "新值必须==旧值或是旧值的倍数",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "responses", RESPONSES,
+            "200", RESPONSE,
+            "content.'application/json'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "multipleOf", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaMultipleOfChangeValidator() {
+
+      return new SchemaMultipleOfChangeInResponseValidator();
+    }
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaNullableChangeInResponseValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaNullableChangeInResponseValidatorTest.java
new file mode 100755
index 0000000..c90a165
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaNullableChangeInResponseValidatorTest.java
@@ -0,0 +1,81 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaNullableChangeInResponseValidatorTest.TestConfiguration.class)
+public class SchemaNullableChangeInResponseValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-nullable-in-response-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-nullable-in-response-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          "仅允许true->false的修改",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "responses", RESPONSES,
+            "200", RESPONSE,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "nullable", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaNullableChangeInResponseValidator() {
+
+      return new SchemaNullableChangeInResponseValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaRequiredChangeInResponseValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaRequiredChangeInResponseValidatorTest.java
new file mode 100755
index 0000000..fbca321
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaRequiredChangeInResponseValidatorTest.java
@@ -0,0 +1,80 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaRequiredChangeInResponseValidatorTest.TestConfiguration.class)
+public class SchemaRequiredChangeInResponseValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-required-in-response-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-required-in-response-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          "不允许删除required字段",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "responses", RESPONSES,
+            "200", RESPONSE,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "required", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaRequiredChangeInResponseValidator() {
+
+      return new SchemaRequiredChangeInResponseValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaTypeFormatChangeInResponseValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaTypeFormatChangeInResponseValidatorTest.java
new file mode 100755
index 0000000..9ad950f
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaTypeFormatChangeInResponseValidatorTest.java
@@ -0,0 +1,80 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaTypeFormatChangeInResponseValidatorTest.TestConfiguration.class)
+public class SchemaTypeFormatChangeInResponseValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-type-format-in-response-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-type-format-in-response-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          "不允许(type=integer,format=int32)->(type=integer,format=int64)的修改",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "responses", RESPONSES,
+            "200", RESPONSE,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaTypeFormatInResponseCompareValidator() {
+
+      return new SchemaTypeFormatChangeInResponseValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaUniqueItemsChangeInResponseValidatorTest.java b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaUniqueItemsChangeInResponseValidatorTest.java
new file mode 100755
index 0000000..12f0fe8
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/java/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/SchemaUniqueItemsChangeInResponseValidatorTest.java
@@ -0,0 +1,81 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compatibility.validators.schema.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaCompareValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compatibility.validators.OasCompatibilityTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaUniqueItemsChangeInResponseValidatorTest.TestConfiguration.class)
+public class SchemaUniqueItemsChangeInResponseValidatorTest extends OasCompatibilityTestBase {
+
+  @Test
+  public void validate() {
+    OpenAPI leftOpenAPI = loadRelative("petstore-schema-unique-items-in-response-a.yaml");
+    OpenAPI rightOpenAPI = loadRelative("petstore-schema-unique-items-in-response-b.yaml");
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+      .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolationBoth(
+          "仅允许false->true的修改",
+          new Object[] {
+            "paths", PATHS,
+            "/pets", PATH_ITEM,
+            "get", OPERATION,
+            "responses", RESPONSES,
+            "200", RESPONSE,
+            "content.'application/xml'", MEDIA_TYPE,
+            "schema", SCHEMA,
+            "properties.'foo'", SCHEMA,
+            "uniqueItems", null
+          }
+        )
+      );
+
+  }
+
+  @Configuration
+  @Import(OasDiffValidatorsSkeletonConfiguration.class)
+  public static class TestConfiguration {
+
+    @Bean
+    public SchemaCompareValidator schemaUniqueItemsChangeInResponseValidator() {
+
+      return new SchemaUniqueItemsChangeInResponseValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-add-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-add-a.yaml
new file mode 100755
index 0000000..ea3e0e8
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-add-a.yaml
@@ -0,0 +1,52 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: foo
+      requestBody:
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+                bar:
+                  type: string
+            encoding:
+              foo:
+                contentType: 'application/octet-stream'
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-add-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-add-b.yaml
new file mode 100755
index 0000000..5854b12
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-add-b.yaml
@@ -0,0 +1,54 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: foo
+      requestBody:
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+                bar:
+                  type: string
+            encoding:
+              foo:
+                contentType: 'application/octet-stream'
+              bar:
+                contentType: 'application/octet-stream'
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-allow-reserved-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-allow-reserved-a.yaml
new file mode 100755
index 0000000..8a6df5f
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-allow-reserved-a.yaml
@@ -0,0 +1,56 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: foo
+      requestBody:
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+                bar:
+                  type: string
+            encoding:
+              foo:
+                contentType: 'application/octet-stream'
+                allowReserved: true
+              bar:
+                contentType: 'application/octet-stream'
+                allowReserved: false
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-allow-reserved-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-allow-reserved-b.yaml
new file mode 100755
index 0000000..14a1667
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-allow-reserved-b.yaml
@@ -0,0 +1,56 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: foo
+      requestBody:
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+                bar:
+                  type: string
+            encoding:
+              foo:
+                contentType: 'application/octet-stream'
+                allowReserved: false
+              bar:
+                contentType: 'application/octet-stream'
+                allowReserved: true
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-content-type-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-content-type-a.yaml
new file mode 100755
index 0000000..ea3e0e8
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-content-type-a.yaml
@@ -0,0 +1,52 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: foo
+      requestBody:
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+                bar:
+                  type: string
+            encoding:
+              foo:
+                contentType: 'application/octet-stream'
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-content-type-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-content-type-b.yaml
new file mode 100755
index 0000000..4d4606e
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-content-type-b.yaml
@@ -0,0 +1,52 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: foo
+      requestBody:
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+                bar:
+                  type: string
+            encoding:
+              foo:
+                contentType: 'text/plain'
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-del-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-del-a.yaml
new file mode 100755
index 0000000..5854b12
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-del-a.yaml
@@ -0,0 +1,54 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: foo
+      requestBody:
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+                bar:
+                  type: string
+            encoding:
+              foo:
+                contentType: 'application/octet-stream'
+              bar:
+                contentType: 'application/octet-stream'
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-del-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-del-b.yaml
new file mode 100755
index 0000000..ea3e0e8
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-del-b.yaml
@@ -0,0 +1,52 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: foo
+      requestBody:
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+                bar:
+                  type: string
+            encoding:
+              foo:
+                contentType: 'application/octet-stream'
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-explode-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-explode-a.yaml
new file mode 100755
index 0000000..407da4a
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-explode-a.yaml
@@ -0,0 +1,53 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: foo
+      requestBody:
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+                bar:
+                  type: string
+            encoding:
+              foo:
+                contentType: 'application/octet-stream'
+                explode: true
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-explode-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-explode-b.yaml
new file mode 100755
index 0000000..a1cf01b
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-explode-b.yaml
@@ -0,0 +1,53 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: foo
+      requestBody:
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+                bar:
+                  type: string
+            encoding:
+              foo:
+                contentType: 'application/octet-stream'
+                explode: false
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-style-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-style-a.yaml
new file mode 100755
index 0000000..72d5d83
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-style-a.yaml
@@ -0,0 +1,53 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: foo
+      requestBody:
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+                bar:
+                  type: string
+            encoding:
+              foo:
+                contentType: 'text/plain'
+                style: form
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-style-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-style-b.yaml
new file mode 100755
index 0000000..686ce97
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/encoding/petstore-encoding-style-b.yaml
@@ -0,0 +1,53 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: foo
+      requestBody:
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+                bar:
+                  type: string
+            encoding:
+              foo:
+                contentType: 'text/plain'
+                style: spaceDelimited
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/petstore-header-add-in-request-body-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/petstore-header-add-in-request-body-a.yaml
new file mode 100755
index 0000000..ea3e0e8
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/petstore-header-add-in-request-body-a.yaml
@@ -0,0 +1,52 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: foo
+      requestBody:
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+                bar:
+                  type: string
+            encoding:
+              foo:
+                contentType: 'application/octet-stream'
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/petstore-header-add-in-request-body-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/petstore-header-add-in-request-body-b.yaml
new file mode 100755
index 0000000..b11643b
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/petstore-header-add-in-request-body-b.yaml
@@ -0,0 +1,56 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: foo
+      requestBody:
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+                bar:
+                  type: string
+            encoding:
+              foo:
+                contentType: 'application/octet-stream'
+                headers:
+                  X-Foo:
+                    schema:
+                      type: string
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/petstore-header-del-in-response-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/petstore-header-del-in-response-a.yaml
new file mode 100755
index 0000000..6124d00
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/petstore-header-del-in-response-a.yaml
@@ -0,0 +1,46 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            X-Foo:
+              schema:
+                type: string
+            X-Bar:
+              schema:
+                type: string
+
+    post:
+      summary: List all pets
+      operationId: foo
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/petstore-header-del-in-response-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/petstore-header-del-in-response-b.yaml
new file mode 100755
index 0000000..daca404
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/header/petstore-header-del-in-response-b.yaml
@@ -0,0 +1,43 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            X-Foo:
+              schema:
+                type: string
+
+    post:
+      summary: List all pets
+      operationId: foo
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-add-in-parameter-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-add-in-parameter-a.yaml
new file mode 100755
index 0000000..677cb3b
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-add-in-parameter-a.yaml
@@ -0,0 +1,42 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo
+          in: query
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: foo
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-add-in-parameter-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-add-in-parameter-b.yaml
new file mode 100755
index 0000000..edce8fa
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-add-in-parameter-b.yaml
@@ -0,0 +1,46 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo
+          in: query
+          content:
+            application/json:
+              schema:
+                type: string
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: bar
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-del-in-parameter-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-del-in-parameter-a.yaml
new file mode 100755
index 0000000..edce8fa
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-del-in-parameter-a.yaml
@@ -0,0 +1,46 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo
+          in: query
+          content:
+            application/json:
+              schema:
+                type: string
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: bar
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-del-in-parameter-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-del-in-parameter-b.yaml
new file mode 100755
index 0000000..677cb3b
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-del-in-parameter-b.yaml
@@ -0,0 +1,42 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo
+          in: query
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: foo
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-del-in-request-body-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-del-in-request-body-a.yaml
new file mode 100755
index 0000000..01be631
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-del-in-request-body-a.yaml
@@ -0,0 +1,47 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      requestBody:
+        content:
+          application/json:
+            schema:
+              type: string
+          application/xml:
+            schema:
+              type: string
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: bar
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-del-in-request-body-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-del-in-request-body-b.yaml
new file mode 100755
index 0000000..a35c14c
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-del-in-request-body-b.yaml
@@ -0,0 +1,44 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: string
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: bar
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-del-in-response-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-del-in-response-a.yaml
new file mode 100755
index 0000000..20757cd
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-del-in-response-a.yaml
@@ -0,0 +1,46 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/json:
+              schema:
+                type: string
+            application/xml:
+              schema:
+                type: string
+
+    post:
+      summary: List all pets
+      operationId: bar
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-del-in-response-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-del-in-response-b.yaml
new file mode 100755
index 0000000..2de4705
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/mediatype/petstore-media-type-del-in-response-b.yaml
@@ -0,0 +1,43 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/json:
+              schema:
+                type: string
+
+    post:
+      summary: List all pets
+      operationId: bar
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/petstore-operation-delete-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/petstore-operation-delete-a.yaml
new file mode 100755
index 0000000..bccaf4d
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/petstore-operation-delete-a.yaml
@@ -0,0 +1,39 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: foo
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/petstore-operation-delete-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/petstore-operation-delete-b.yaml
new file mode 100755
index 0000000..8b4c9ef
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/petstore-operation-delete-b.yaml
@@ -0,0 +1,32 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/petstore-operation-id-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/petstore-operation-id-a.yaml
new file mode 100755
index 0000000..bccaf4d
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/petstore-operation-id-a.yaml
@@ -0,0 +1,39 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: foo
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/petstore-operation-id-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/petstore-operation-id-b.yaml
new file mode 100755
index 0000000..e9a8a81
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/operation/petstore-operation-id-b.yaml
@@ -0,0 +1,39 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: bar
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-add-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-add-a.yaml
new file mode 100755
index 0000000..884795f
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-add-a.yaml
@@ -0,0 +1,38 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          required: false
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-add-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-add-b.yaml
new file mode 100755
index 0000000..b268b53
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-add-b.yaml
@@ -0,0 +1,44 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    parameters:
+      - name: foo
+        in: query
+      - name: bar
+        in: query
+        required: true
+    get:
+      summary: List all pets
+      operationId: listpets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          required: false
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-allow-empty-value-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-allow-empty-value-a.yaml
new file mode 100755
index 0000000..1827944
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-allow-empty-value-a.yaml
@@ -0,0 +1,41 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      tags:
+        - pets
+      parameters:
+        - name: limit3
+          in: query
+          allowEmptyValue: false
+        - name: limit4
+          in: query
+          allowEmptyValue: true
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-allow-empty-value-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-allow-empty-value-b.yaml
new file mode 100755
index 0000000..f0caf3b
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-allow-empty-value-b.yaml
@@ -0,0 +1,43 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      tags:
+        - pets
+      parameters:
+        - name: foo
+          in: query
+        - name: limit3
+          in: query
+          allowEmptyValue: true
+        - name: limit4
+          in: query
+          allowEmptyValue: false
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-allow-reserved-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-allow-reserved-a.yaml
new file mode 100755
index 0000000..a36fdea
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-allow-reserved-a.yaml
@@ -0,0 +1,41 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      tags:
+        - pets
+      parameters:
+        - name: limit3
+          in: query
+          allowReserved: false
+        - name: limit4
+          in: query
+          allowReserved: true
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-allow-reserved-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-allow-reserved-b.yaml
new file mode 100755
index 0000000..5964590
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-allow-reserved-b.yaml
@@ -0,0 +1,43 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      tags:
+        - pets
+      parameters:
+        - name: foo
+          in: query
+        - name: limit3
+          in: query
+          allowReserved: true
+        - name: limit4
+          in: query
+          allowReserved: false
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-explode-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-explode-a.yaml
new file mode 100755
index 0000000..3106e3d
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-explode-a.yaml
@@ -0,0 +1,41 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          explode: true
+        - name: limit2
+          in: query
+          explode: true
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-explode-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-explode-b.yaml
new file mode 100755
index 0000000..27f7171
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-explode-b.yaml
@@ -0,0 +1,43 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      tags:
+        - pets
+      parameters:
+        - name: foo
+          in: query
+        - name: limit
+          in: query
+          explode: false
+        - name: limit2
+          in: query
+          explode: true
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-required-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-required-a.yaml
new file mode 100755
index 0000000..985330c
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-required-a.yaml
@@ -0,0 +1,41 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          required: false
+        - name: limit2
+          in: query
+          required: true
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-required-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-required-b.yaml
new file mode 100755
index 0000000..8a9a181
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-required-b.yaml
@@ -0,0 +1,43 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      tags:
+        - pets
+      parameters:
+        - name: foo
+          in: query
+        - name: limit
+          in: query
+          required: true
+        - name: limit2
+          in: query
+          required: false
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-style-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-style-a.yaml
new file mode 100755
index 0000000..26788b6
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-style-a.yaml
@@ -0,0 +1,41 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          style: simple
+        - name: limit2
+          in: query
+          style: form
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-style-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-style-b.yaml
new file mode 100755
index 0000000..3293eab
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/parameter/petstore-parameter-style-b.yaml
@@ -0,0 +1,43 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      tags:
+        - pets
+      parameters:
+        - name: foo
+          in: query
+        - name: limit
+          in: query
+          style: form
+        - name: limit2
+          in: query
+          style: form
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/pathitem/petstore-path-item-delete-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/pathitem/petstore-path-item-delete-a.yaml
new file mode 100755
index 0000000..977c1e3
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/pathitem/petstore-path-item-delete-a.yaml
@@ -0,0 +1,59 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+  /pets/{petId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: petId
+          in: path
+          required: true
+          description: The id of the pet to retrieve
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/pathitem/petstore-path-item-delete-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/pathitem/petstore-path-item-delete-b.yaml
new file mode 100755
index 0000000..1d5ad3a
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/pathitem/petstore-path-item-delete-b.yaml
@@ -0,0 +1,59 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+  /pets/{PetId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: PetId
+          in: path
+          required: true
+          description: The id of the pet to retrieve
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/requestbody/petstore-request-body-required-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/requestbody/petstore-request-body-required-a.yaml
new file mode 100755
index 0000000..72086e3
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/requestbody/petstore-request-body-required-a.yaml
@@ -0,0 +1,51 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      requestBody:
+        required: false
+        content:
+          application/json:
+            schema:
+              type: string
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: bar
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              type: string
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/requestbody/petstore-request-body-required-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/requestbody/petstore-request-body-required-b.yaml
new file mode 100755
index 0000000..d85ea91
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/requestbody/petstore-request-body-required-b.yaml
@@ -0,0 +1,51 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              type: string
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: bar
+      requestBody:
+        required: false
+        content:
+          application/json:
+            schema:
+              type: string
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/response/petstore-response-add-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/response/petstore-response-add-a.yaml
new file mode 100755
index 0000000..e9a8a81
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/response/petstore-response-add-a.yaml
@@ -0,0 +1,39 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+
+    post:
+      summary: List all pets
+      operationId: bar
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/response/petstore-response-add-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/response/petstore-response-add-b.yaml
new file mode 100755
index 0000000..a8801ca
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/response/petstore-response-add-b.yaml
@@ -0,0 +1,43 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+        '302':
+          description: foo
+        default:
+          description: bar
+
+    post:
+      summary: List all pets
+      operationId: bar
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-discriminator-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-discriminator-a.yaml
new file mode 100755
index 0000000..42700a2
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-discriminator-a.yaml
@@ -0,0 +1,108 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    post:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: object
+                properties:
+                  petType:
+                    type: string
+                  petId:
+                    type: string
+                discriminator:
+                  propertyName: petType
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: object
+                properties:
+                  petType:
+                    type: string
+                  petId:
+                    type: string
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: object
+                  properties:
+                    petType:
+                      type: string
+                    petId:
+                      type: string
+                  discriminator:
+                    propertyName: petType
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: object
+                  properties:
+                    petType:
+                      type: string
+                    petId:
+                      type: string
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                properties:
+                  foo:
+                    type: object
+                    properties:
+                      petType:
+                        type: string
+                      petId:
+                        type: string
+                    discriminator:
+                      propertyName: petType
+            application/json:
+              schema:
+                properties:
+                  foo:
+                    type: object
+                    properties:
+                      petType:
+                        type: string
+                      petId:
+                        type: string
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-discriminator-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-discriminator-b.yaml
new file mode 100755
index 0000000..f674ccf
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-discriminator-b.yaml
@@ -0,0 +1,108 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    post:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: object
+                properties:
+                  petType:
+                    type: string
+                  petId:
+                    type: string
+                discriminator:
+                  propertyName: petId
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: object
+                properties:
+                  petType:
+                    type: string
+                  petId:
+                    type: string
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: object
+                  properties:
+                    petType:
+                      type: string
+                    petId:
+                      type: string
+                  discriminator:
+                    propertyName: petId
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: object
+                  properties:
+                    petType:
+                      type: string
+                    petId:
+                      type: string
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                properties:
+                  foo:
+                    type: object
+                    properties:
+                      petType:
+                        type: string
+                      petId:
+                        type: string
+                    discriminator:
+                      propertyName: petId
+            application/json:
+              schema:
+                properties:
+                  foo:
+                    type: object
+                    properties:
+                      petType:
+                        type: string
+                      petId:
+                        type: string
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-read-only-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-read-only-a.yaml
new file mode 100755
index 0000000..2d8ecf3
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-read-only-a.yaml
@@ -0,0 +1,75 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    post:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+                readOnly: true
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+                  readOnly: true
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                properties:
+                  foo:
+                    type: integer
+                    readOnly: true
+            application/json:
+              schema:
+                properties:
+                  foo:
+                    type: integer
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-read-only-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-read-only-b.yaml
new file mode 100755
index 0000000..53b01c9
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-read-only-b.yaml
@@ -0,0 +1,75 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    post:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+                readOnly: false
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+                  readOnly: false
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                properties:
+                  foo:
+                    type: integer
+                    readOnly: false
+            application/json:
+              schema:
+                properties:
+                  foo:
+                    type: integer
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-write-only-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-write-only-a.yaml
new file mode 100755
index 0000000..facbda5
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-write-only-a.yaml
@@ -0,0 +1,77 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    post:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+                writeOnly: true
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+                  writeOnly: true
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+                  writeOnly: true
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                properties:
+                  foo:
+                    type: integer
+                    writeOnly: true
+            application/json:
+              schema:
+                properties:
+                  foo:
+                    type: integer
+                    writeOnly: true
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-write-only-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-write-only-b.yaml
new file mode 100755
index 0000000..43ce55b
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-write-only-b.yaml
@@ -0,0 +1,77 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    post:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+                writeOnly: false
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+                  writeOnly: false
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+                  writeOnly: true
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                properties:
+                  foo:
+                    type: integer
+                    writeOnly: false
+            application/json:
+              schema:
+                properties:
+                  foo:
+                    type: integer
+                    writeOnly: true
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-xml-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-xml-a.yaml
new file mode 100755
index 0000000..c4cd352
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-xml-a.yaml
@@ -0,0 +1,72 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    post:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: string
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: string
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                properties:
+                  foo:
+                    type: string
+            application/json:
+              schema:
+                properties:
+                  foo:
+                    type: string
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-xml-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-xml-b.yaml
new file mode 100755
index 0000000..aacf8ef
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/petstore-schema-xml-b.yaml
@@ -0,0 +1,78 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    post:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: string
+                xml:
+                  name: foo
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: string
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+                  xml:
+                    name: foo
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                properties:
+                  foo:
+                    type: string
+                    xml:
+                      name: foo
+            application/json:
+              schema:
+                properties:
+                  foo:
+                    type: string
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-enum-in-request-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-enum-in-request-a.yaml
new file mode 100755
index 0000000..d85797c
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-enum-in-request-a.yaml
@@ -0,0 +1,69 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: string
+                enum:
+                  - a
+                  - b
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: string
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+                  enum:
+                    - a
+                    - b
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-enum-in-request-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-enum-in-request-b.yaml
new file mode 100755
index 0000000..467626b
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-enum-in-request-b.yaml
@@ -0,0 +1,66 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: string
+                enum:
+                  - a
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: string
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+                  enum:
+                    - a
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-exclusive-maximum-in-request-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-exclusive-maximum-in-request-a.yaml
new file mode 100755
index 0000000..34a032f
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-exclusive-maximum-in-request-a.yaml
@@ -0,0 +1,66 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+                maximum: 1
+                exclusiveMaximum: false
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+                  maximum: 1
+                  exclusiveMaximum: false
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-exclusive-maximum-in-request-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-exclusive-maximum-in-request-b.yaml
new file mode 100755
index 0000000..aa0a3ab
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-exclusive-maximum-in-request-b.yaml
@@ -0,0 +1,66 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+                maximum: 1
+                exclusiveMaximum: true
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+                  maximum: 1
+                  exclusiveMaximum: true
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-exclusive-minimum-in-request-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-exclusive-minimum-in-request-a.yaml
new file mode 100755
index 0000000..1a1711e
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-exclusive-minimum-in-request-a.yaml
@@ -0,0 +1,66 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+                minimum: 1
+                exclusiveMinimum: false
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+                  minimum: 1
+                  exclusiveMinimum: false
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-exclusive-minimum-in-request-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-exclusive-minimum-in-request-b.yaml
new file mode 100755
index 0000000..99a63bf
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-exclusive-minimum-in-request-b.yaml
@@ -0,0 +1,66 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+                minimum: 1
+                exclusiveMinimum: true
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+                  minimum: 1
+                  exclusiveMinimum: true
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-max-items-in-request-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-max-items-in-request-a.yaml
new file mode 100755
index 0000000..fe1c965
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-max-items-in-request-a.yaml
@@ -0,0 +1,72 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: array
+                items:
+                  type: string
+                maxItems: 1
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: array
+                items:
+                  type: string
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: array
+                  items:
+                    type: string
+                  maxItems: 1
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: array
+                  items:
+                    type: string
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-max-items-in-request-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-max-items-in-request-b.yaml
new file mode 100755
index 0000000..ca50de7
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-max-items-in-request-b.yaml
@@ -0,0 +1,72 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: array
+                items:
+                  type: string
+                maxItems: 0
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: array
+                items:
+                  type: string
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: array
+                  items:
+                    type: string
+                  maxItems: 0
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: array
+                  items:
+                    type: string
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-max-length-in-request-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-max-length-in-request-a.yaml
new file mode 100755
index 0000000..a20733c
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-max-length-in-request-a.yaml
@@ -0,0 +1,64 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: string
+                maxLength: 1
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: string
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+                  maxLength: 1
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-max-length-in-request-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-max-length-in-request-b.yaml
new file mode 100755
index 0000000..27505da
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-max-length-in-request-b.yaml
@@ -0,0 +1,64 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: string
+                maxLength: 0
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: string
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+                  maxLength: 0
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-max-properties-in-request-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-max-properties-in-request-a.yaml
new file mode 100755
index 0000000..5d8b3f5
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-max-properties-in-request-a.yaml
@@ -0,0 +1,64 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: object
+                maxProperties: 1
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: object
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: object
+                  maxProperties: 1
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: object
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-max-properties-in-request-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-max-properties-in-request-b.yaml
new file mode 100755
index 0000000..676e166
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-max-properties-in-request-b.yaml
@@ -0,0 +1,64 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: object
+                maxProperties: 0
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: object
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: object
+                  maxProperties: 0
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: object
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-maximum-in-request-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-maximum-in-request-a.yaml
new file mode 100755
index 0000000..b6c79ce
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-maximum-in-request-a.yaml
@@ -0,0 +1,64 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+                maximum: 1
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+                  maximum: 1
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-maximum-in-request-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-maximum-in-request-b.yaml
new file mode 100755
index 0000000..88bcc19
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-maximum-in-request-b.yaml
@@ -0,0 +1,64 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+                maximum: 0
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+                  maximum: 0
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-min-items-in-request-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-min-items-in-request-a.yaml
new file mode 100755
index 0000000..1c44fa3
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-min-items-in-request-a.yaml
@@ -0,0 +1,72 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: array
+                items:
+                  type: string
+                minItems: 1
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: array
+                items:
+                  type: string
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: array
+                  items:
+                    type: string
+                  minItems: 1
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: array
+                  items:
+                    type: string
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-min-items-in-request-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-min-items-in-request-b.yaml
new file mode 100755
index 0000000..3498334
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-min-items-in-request-b.yaml
@@ -0,0 +1,72 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: array
+                items:
+                  type: string
+                minItems: 2
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: array
+                items:
+                  type: string
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: array
+                  items:
+                    type: string
+                  minItems: 2
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: array
+                  items:
+                    type: string
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-min-length-in-request-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-min-length-in-request-a.yaml
new file mode 100755
index 0000000..89b952a
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-min-length-in-request-a.yaml
@@ -0,0 +1,64 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: string
+                minLength: 1
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: string
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+                  minLength: 1
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-min-length-in-request-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-min-length-in-request-b.yaml
new file mode 100755
index 0000000..e03128e
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-min-length-in-request-b.yaml
@@ -0,0 +1,64 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: string
+                minLength: 2
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: string
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+                  minLength: 2
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-min-properties-in-request-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-min-properties-in-request-a.yaml
new file mode 100755
index 0000000..cd187f8
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-min-properties-in-request-a.yaml
@@ -0,0 +1,64 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: object
+                minProperties: 1
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: object
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: object
+                  minProperties: 1
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: object
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-min-properties-in-request-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-min-properties-in-request-b.yaml
new file mode 100755
index 0000000..0fdada9
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-min-properties-in-request-b.yaml
@@ -0,0 +1,64 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: object
+                minProperties: 2
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: object
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: object
+                  minProperties: 2
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: object
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-minimum-in-request-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-minimum-in-request-a.yaml
new file mode 100755
index 0000000..b109aee
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-minimum-in-request-a.yaml
@@ -0,0 +1,64 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+                minimum: 1
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+                  minimum: 1
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-minimum-in-request-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-minimum-in-request-b.yaml
new file mode 100755
index 0000000..2b58f28
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-minimum-in-request-b.yaml
@@ -0,0 +1,64 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+                minimum: 2
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+                  minimum: 2
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-multiple-of-in-request-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-multiple-of-in-request-a.yaml
new file mode 100755
index 0000000..5933f40
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-multiple-of-in-request-a.yaml
@@ -0,0 +1,65 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+                multipleOf: 6
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+                multipleOf: 6
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+                  multipleOf: 6
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+                  multipleOf: 6
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-multiple-of-in-request-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-multiple-of-in-request-b.yaml
new file mode 100755
index 0000000..dae1e7c
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-multiple-of-in-request-b.yaml
@@ -0,0 +1,65 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+                multipleOf: 4
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+                multipleOf: 2
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+                  multipleOf: 4
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+                  multipleOf: 2
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-nullable-in-request-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-nullable-in-request-a.yaml
new file mode 100755
index 0000000..8e23d4a
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-nullable-in-request-a.yaml
@@ -0,0 +1,63 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: string
+                nullable: true
+              bar:
+                type: string
+        - name: foo2
+          in: query
+          schema:
+            type: integer
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+                  nullable: true
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-nullable-in-request-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-nullable-in-request-b.yaml
new file mode 100755
index 0000000..4ad4f78
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-nullable-in-request-b.yaml
@@ -0,0 +1,64 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: string
+                nullable: false
+              bar:
+                type: string
+                nullable: true
+        - name: foo2
+          in: query
+          schema:
+            type: integer
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+                  nullable: false
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-required-in-request-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-required-in-request-a.yaml
new file mode 100755
index 0000000..6a3fc3f
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-required-in-request-a.yaml
@@ -0,0 +1,62 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: string
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: string
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-required-in-request-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-required-in-request-b.yaml
new file mode 100755
index 0000000..8ed0d10
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-required-in-request-b.yaml
@@ -0,0 +1,66 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: string
+            required:
+              - foo
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: string
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+              required:
+                - foo
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-type-format-in-request-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-type-format-in-request-a.yaml
new file mode 100755
index 0000000..c5fd0de
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-type-format-in-request-a.yaml
@@ -0,0 +1,62 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-type-format-in-request-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-type-format-in-request-b.yaml
new file mode 100755
index 0000000..682c509
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-type-format-in-request-b.yaml
@@ -0,0 +1,62 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: string
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: integer
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: string
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: integer
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-unique-items-in-request-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-unique-items-in-request-a.yaml
new file mode 100755
index 0000000..282b6d8
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-unique-items-in-request-a.yaml
@@ -0,0 +1,73 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: array
+                items:
+                  type: string
+                uniqueItems: false
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: array
+                items:
+                  type: string
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: array
+                  items:
+                    type: string
+                  uniqueItems: false
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: array
+                  items:
+                    type: string
+
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-unique-items-in-request-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-unique-items-in-request-b.yaml
new file mode 100755
index 0000000..215ac91
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/request/petstore-schema-unique-items-in-request-b.yaml
@@ -0,0 +1,72 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      parameters:
+        - name: foo1
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: array
+                items:
+                  type: string
+                uniqueItems: true
+        - name: foo2
+          in: query
+          schema:
+            type: object
+            properties:
+              foo:
+                type: array
+                items:
+                  type: string
+      requestBody:
+        content:
+          application/xml:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: array
+                  items:
+                    type: string
+                  uniqueItems: true
+          application/json:
+            schema:
+              type: object
+              properties:
+                foo:
+                  type: array
+                  items:
+                    type: string
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-enum-in-response-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-enum-in-response-a.yaml
new file mode 100755
index 0000000..91a4e27
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-enum-in-response-a.yaml
@@ -0,0 +1,47 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: string
+                    enum:
+                      - a
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: string
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-enum-in-response-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-enum-in-response-b.yaml
new file mode 100755
index 0000000..22a64bb
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-enum-in-response-b.yaml
@@ -0,0 +1,48 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: string
+                    enum:
+                      - a
+                      - b
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: string
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-exclusive-maximum-in-response-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-exclusive-maximum-in-response-a.yaml
new file mode 100755
index 0000000..cc289a3
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-exclusive-maximum-in-response-a.yaml
@@ -0,0 +1,47 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
+                    maximum: 0
+                    exclusiveMaximum: true
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-exclusive-maximum-in-response-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-exclusive-maximum-in-response-b.yaml
new file mode 100755
index 0000000..71a4c91
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-exclusive-maximum-in-response-b.yaml
@@ -0,0 +1,47 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
+                    maximum: 0
+                    exclusiveMaximum: false
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-exclusive-minimum-in-response-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-exclusive-minimum-in-response-a.yaml
new file mode 100755
index 0000000..265a135
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-exclusive-minimum-in-response-a.yaml
@@ -0,0 +1,47 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
+                    minimum: 0
+                    exclusiveMinimum: true
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-exclusive-minimum-in-response-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-exclusive-minimum-in-response-b.yaml
new file mode 100755
index 0000000..db28519
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-exclusive-minimum-in-response-b.yaml
@@ -0,0 +1,47 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
+                    minimum: 0
+                    exclusiveMinimum: false
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-max-items-in-response-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-max-items-in-response-a.yaml
new file mode 100755
index 0000000..a7693fb
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-max-items-in-response-a.yaml
@@ -0,0 +1,50 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: array
+                    items:
+                      type: string
+                    maxItems: 1
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: array
+                    items:
+                      type: string
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-max-items-in-response-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-max-items-in-response-b.yaml
new file mode 100755
index 0000000..0339b82
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-max-items-in-response-b.yaml
@@ -0,0 +1,50 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: array
+                    items:
+                      type: string
+                    maxItems: 2
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: array
+                    items:
+                      type: string
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-max-length-in-response-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-max-length-in-response-a.yaml
new file mode 100755
index 0000000..9eeaf00
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-max-length-in-response-a.yaml
@@ -0,0 +1,46 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: string
+                    maxLength: 1
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: string
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-max-length-in-response-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-max-length-in-response-b.yaml
new file mode 100755
index 0000000..70acf5e
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-max-length-in-response-b.yaml
@@ -0,0 +1,46 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: string
+                    maxLength: 2
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: string
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-max-properties-in-response-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-max-properties-in-response-a.yaml
new file mode 100755
index 0000000..d8baac7
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-max-properties-in-response-a.yaml
@@ -0,0 +1,46 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: object
+                    maxProperties: 1
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: object
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-max-properties-in-response-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-max-properties-in-response-b.yaml
new file mode 100755
index 0000000..3038b75
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-max-properties-in-response-b.yaml
@@ -0,0 +1,46 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: object
+                    maxProperties: 2
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: object
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-maximum-in-response-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-maximum-in-response-a.yaml
new file mode 100755
index 0000000..c9f5ecd
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-maximum-in-response-a.yaml
@@ -0,0 +1,46 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
+                    maximum: 0
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-maximum-in-response-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-maximum-in-response-b.yaml
new file mode 100755
index 0000000..9e33862
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-maximum-in-response-b.yaml
@@ -0,0 +1,46 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
+                    maximum: 1
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-min-items-in-response-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-min-items-in-response-a.yaml
new file mode 100755
index 0000000..f9eab4a
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-min-items-in-response-a.yaml
@@ -0,0 +1,50 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: array
+                    items:
+                      type: string
+                    minItems: 1
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: array
+                    items:
+                      type: string
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-min-items-in-response-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-min-items-in-response-b.yaml
new file mode 100755
index 0000000..3d72bf6
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-min-items-in-response-b.yaml
@@ -0,0 +1,50 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: array
+                    items:
+                      type: string
+                    minItems: 0
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: array
+                    items:
+                      type: string
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-min-length-in-response-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-min-length-in-response-a.yaml
new file mode 100755
index 0000000..5bbae23
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-min-length-in-response-a.yaml
@@ -0,0 +1,46 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: string
+                    minLength: 1
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: string
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-min-length-in-response-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-min-length-in-response-b.yaml
new file mode 100755
index 0000000..d7348ab
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-min-length-in-response-b.yaml
@@ -0,0 +1,46 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: string
+                    minLength: 0
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: string
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-min-properties-in-response-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-min-properties-in-response-a.yaml
new file mode 100755
index 0000000..de9cd82
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-min-properties-in-response-a.yaml
@@ -0,0 +1,46 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: object
+                    minProperties: 1
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: object
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-min-properties-in-response-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-min-properties-in-response-b.yaml
new file mode 100755
index 0000000..7d8997a
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-min-properties-in-response-b.yaml
@@ -0,0 +1,46 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: object
+                    minProperties: 0
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: object
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-minimum-in-response-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-minimum-in-response-a.yaml
new file mode 100755
index 0000000..f3f9f04
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-minimum-in-response-a.yaml
@@ -0,0 +1,46 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
+                    minimum: 1
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-minimum-in-response-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-minimum-in-response-b.yaml
new file mode 100755
index 0000000..6530986
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-minimum-in-response-b.yaml
@@ -0,0 +1,46 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
+                    minimum: 0
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-multiple-of-in-response-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-multiple-of-in-response-a.yaml
new file mode 100755
index 0000000..f56e772
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-multiple-of-in-response-a.yaml
@@ -0,0 +1,49 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
+                    multipleOf: 3
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
+                    multipleOf: 3
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-multiple-of-in-response-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-multiple-of-in-response-b.yaml
new file mode 100755
index 0000000..4cbf0e0
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-multiple-of-in-response-b.yaml
@@ -0,0 +1,49 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
+                    multipleOf: 4
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
+                    multipleOf: 6
+
+
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-nullable-in-response-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-nullable-in-response-a.yaml
new file mode 100755
index 0000000..ac9d3ee
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-nullable-in-response-a.yaml
@@ -0,0 +1,46 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: string
+                    nullable: false
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: string
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-nullable-in-response-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-nullable-in-response-b.yaml
new file mode 100755
index 0000000..acc613e
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-nullable-in-response-b.yaml
@@ -0,0 +1,46 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: string
+                    nullable: true
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: string
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-required-in-response-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-required-in-response-a.yaml
new file mode 100755
index 0000000..2ac1cdb
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-required-in-response-a.yaml
@@ -0,0 +1,49 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: string
+                required:
+                  - foo
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: string
+                required:
+                  - foo
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-required-in-response-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-required-in-response-b.yaml
new file mode 100755
index 0000000..0bbfce9
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-required-in-response-b.yaml
@@ -0,0 +1,47 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: string
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: string
+                required:
+                  - foo
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-type-format-in-response-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-type-format-in-response-a.yaml
new file mode 100755
index 0000000..06c439e
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-type-format-in-response-a.yaml
@@ -0,0 +1,46 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
+                    format: int32
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-type-format-in-response-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-type-format-in-response-b.yaml
new file mode 100755
index 0000000..23e23f5
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-type-format-in-response-b.yaml
@@ -0,0 +1,46 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
+                    format: int64
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: integer
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-unique-items-in-response-a.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-unique-items-in-response-a.yaml
new file mode 100755
index 0000000..cc47615
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-unique-items-in-response-a.yaml
@@ -0,0 +1,50 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: array
+                    items:
+                      type: string
+                    uniqueItems: true
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: array
+                    items:
+                      type: string
diff --git a/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-unique-items-in-response-b.yaml b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-unique-items-in-response-b.yaml
new file mode 100755
index 0000000..64e8a47
--- /dev/null
+++ b/oas-validator/oas-validator-compatibility/src/test/resources/org/apache/servicecomb/toolkit/oasv/compatibility/validators/schema/response/petstore-schema-unique-items-in-response-b.yaml
@@ -0,0 +1,50 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listpets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/xml:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: array
+                    items:
+                      type: string
+                    uniqueItems: false
+            application/json:
+              schema:
+                type: object
+                properties:
+                  foo:
+                    type: array
+                    items:
+                      type: string
diff --git a/oas-validator/oas-validator-compliance-spring/pom.xml b/oas-validator/oas-validator-compliance-spring/pom.xml
new file mode 100755
index 0000000..d6a10d8
--- /dev/null
+++ b/oas-validator/oas-validator-compliance-spring/pom.xml
@@ -0,0 +1,68 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one or more
+  ~ contributor license agreements.  See the NOTICE file distributed with
+  ~ this work for additional information regarding copyright ownership.
+  ~ The ASF licenses this file to You under the Apache License, Version 2.0
+  ~ (the "License"); you may not use this file except in compliance with
+  ~ the License.  You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.apache.servicecomb.toolkit</groupId>
+    <artifactId>oas-validator-parent</artifactId>
+    <version>0.2.0-SNAPSHOT</version>
+    <relativePath>../pom.xml</relativePath>
+  </parent>
+
+  <groupId>org.apache.servicecomb.toolkit</groupId>
+  <artifactId>oas-validator-compliance-spring</artifactId>
+
+  <dependencies>
+
+    <dependency>
+      <groupId>org.apache.servicecomb.toolkit</groupId>
+      <artifactId>oas-validator-compliance</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+
+    <dependency>
+      <groupId>org.apache.servicecomb.toolkit</groupId>
+      <artifactId>oas-validator-core-spring</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter</artifactId>
+    </dependency>
+
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-surefire-plugin</artifactId>
+      </plugin>
+
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-surefire-report-plugin</artifactId>
+      </plugin>
+    </plugins>
+  </build>
+
+</project>
diff --git a/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/ComponentsValidatorConfiguration.java b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/ComponentsValidatorConfiguration.java
new file mode 100755
index 0000000..6acd7fe
--- /dev/null
+++ b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/ComponentsValidatorConfiguration.java
@@ -0,0 +1,68 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.config;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.components.ComponentsKeysValidators;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class ComponentsValidatorConfiguration {
+
+  @Bean
+  public ComponentsValidator componentsCallbacksUpperCamelCaseValidator() {
+    return ComponentsKeysValidators.CALLBACKS_UPPER_CAMEL_CASE_VALIDATOR;
+  }
+
+  @Bean
+  public ComponentsValidator componentsExamplesUpperCamelCaseValidator() {
+    return ComponentsKeysValidators.EXAMPLES_UPPER_CAMEL_CASE_VALIDATOR;
+  }
+
+  @Bean
+  public ComponentsValidator componentsHeadersUpperHyphenCaseValidator() {
+    return ComponentsKeysValidators.HEADERS_UPPER_HYPHEN_CASE_VALIDATOR;
+  }
+
+  @Bean
+  public ComponentsValidator componentsLinksUpperCamelCaseValidator() {
+    return ComponentsKeysValidators.LINKS_UPPER_CAMEL_CASE_VALIDATOR;
+  }
+
+  @Bean
+  public ComponentsValidator componentsParametersUpperCamelCaseValidator() {
+    return ComponentsKeysValidators.PARAMETERS_UPPER_CAMEL_CASE_VALIDATOR;
+  }
+
+  @Bean
+  public ComponentsValidator componentsRequestBodiesUpperCamelCaseValidator() {
+    return ComponentsKeysValidators.REQUEST_BODIES_UPPER_CAMEL_CASE_VALIDATOR;
+  }
+
+  @Bean
+  public ComponentsValidator componentsResponsesUpperCamelCaseValidator() {
+    return ComponentsKeysValidators.RESPONSES_UPPER_CAMEL_CASE_VALIDATOR;
+  }
+
+  @Bean
+  public ComponentsValidator componentsSchemasUpperCamelCaseValidator() {
+    return ComponentsKeysValidators.SCHEMAS_UPPER_CAMEL_CASE_VALIDATOR;
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/EncodingValidatorConfiguration.java b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/EncodingValidatorConfiguration.java
new file mode 100755
index 0000000..508bce8
--- /dev/null
+++ b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/EncodingValidatorConfiguration.java
@@ -0,0 +1,33 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.config;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.encoding.EncodingKeysValidators;
+import org.apache.servicecomb.toolkit.oasv.validation.api.EncodingValidator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class EncodingValidatorConfiguration {
+
+  @Bean
+  public EncodingValidator encodingHeadersUpperHyphenCaseValidator() {
+    return EncodingKeysValidators.HEADERS_UPPER_HYPHEN_CASE_VALIDATOR;
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/HeaderValidatorConfiguration.java b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/HeaderValidatorConfiguration.java
new file mode 100755
index 0000000..ec5c215
--- /dev/null
+++ b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/HeaderValidatorConfiguration.java
@@ -0,0 +1,33 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.config;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.header.HeaderDescriptionRequiredValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.HeaderValidator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class HeaderValidatorConfiguration {
+
+  @Bean
+  public HeaderValidator headerDescriptionRequiredValidator() {
+    return new HeaderDescriptionRequiredValidator();
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/InfoValidatorConfiguration.java b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/InfoValidatorConfiguration.java
new file mode 100755
index 0000000..924878a
--- /dev/null
+++ b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/InfoValidatorConfiguration.java
@@ -0,0 +1,33 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.config;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.info.InfoDescriptionRequiredValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.InfoValidator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class InfoValidatorConfiguration {
+
+  @Bean
+  public InfoValidator infoDescriptionRequiredValidator() {
+    return new InfoDescriptionRequiredValidator();
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/OpenApiValidatorConfiguration.java b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/OpenApiValidatorConfiguration.java
new file mode 100755
index 0000000..affe351
--- /dev/null
+++ b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/OpenApiValidatorConfiguration.java
@@ -0,0 +1,45 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.config;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.openapi.OpenApiSecurityEmptyValidator;
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.openapi.OpenApiTagNotEmptyValidator;
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.openapi.OpenApiVersionValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OpenApiValidator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class OpenApiValidatorConfiguration {
+
+  @Bean
+  public OpenApiValidator openApiTagNotEmptyValidator() {
+    return new OpenApiTagNotEmptyValidator();
+  }
+
+  @Bean
+  public OpenApiValidator openApiVersionValidator() {
+    return new OpenApiVersionValidator();
+  }
+
+  @Bean
+  public OpenApiValidator openApiSecurityEmptyValidator() {
+    return new OpenApiSecurityEmptyValidator();
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/OperationValidatorConfiguration.java b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/OperationValidatorConfiguration.java
new file mode 100755
index 0000000..e00784f
--- /dev/null
+++ b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/OperationValidatorConfiguration.java
@@ -0,0 +1,52 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.config;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.operation.*;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OperationValidator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class OperationValidatorConfiguration {
+
+  @Bean
+  public OperationValidator operationIdLowerCamelCaseValidator() {
+    return new OperationIdLowerCamelCaseValidator();
+  }
+
+  @Bean
+  public OperationValidator operationSummaryRequiredValidator() {
+    return new OperationSummaryRequiredValidator();
+  }
+
+  @Bean
+  public OperationValidator operationTagsOnlyOneValidator() {
+    return new OperationTagsOnlyOneValidator();
+  }
+
+  @Bean
+  public OperationValidator operationTagsReferenceValidator() {
+    return new OperationTagsReferenceValidator();
+  }
+
+  @Bean
+  public OperationValidator operationServersEmptyValidator() {
+    return new OperationServersEmptyValidator();
+  }
+}
diff --git a/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/ParameterValidatorConfiguration.java b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/ParameterValidatorConfiguration.java
new file mode 100755
index 0000000..065131d
--- /dev/null
+++ b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/ParameterValidatorConfiguration.java
@@ -0,0 +1,53 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.config;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.parameter.*;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ParameterValidator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class ParameterValidatorConfiguration {
+
+  @Bean
+  public ParameterValidator parameterCookieLowerCamelCaseValidator() {
+    return new ParameterCookieLowerCamelCaseValidator();
+  }
+
+  @Bean
+  public ParameterValidator parameterHeaderUpperHyphenCaseValidator() {
+    return new ParameterHeaderUpperHyphenCaseValidator();
+  }
+
+  @Bean
+  public ParameterValidator parameterPathLowerCamelCaseValidator() {
+    return new ParameterPathLowerCamelCaseValidator();
+  }
+
+  @Bean
+  public ParameterValidator parameterQueryLowerCamelCaseValidator() {
+    return new ParameterQueryLowerCamelCaseValidator();
+  }
+
+  @Bean
+  public ParameterValidator parameterDescriptionRequiredValidator() {
+    return new ParameterDescriptionRequiredValidator();
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/PathsValidatorConfiguration.java b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/PathsValidatorConfiguration.java
new file mode 100755
index 0000000..6581d82
--- /dev/null
+++ b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/PathsValidatorConfiguration.java
@@ -0,0 +1,33 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.config;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.paths.PathsLowerCamelCaseValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.PathsValidator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class PathsValidatorConfiguration {
+
+  @Bean
+  public PathsValidator pathsLowerCamelCaseValidator() {
+    return new PathsLowerCamelCaseValidator();
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/RequestBodyValidatorConfiguration.java b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/RequestBodyValidatorConfiguration.java
new file mode 100755
index 0000000..ecd0bc8
--- /dev/null
+++ b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/RequestBodyValidatorConfiguration.java
@@ -0,0 +1,33 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.config;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.requestbody.RequestBodyDescriptionRequiredValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.RequestBodyValidator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class RequestBodyValidatorConfiguration {
+
+  @Bean
+  public RequestBodyValidator requestBodyDescriptionRequiredValidator() {
+    return new RequestBodyDescriptionRequiredValidator();
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/ResponseValidatorConfiguration.java b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/ResponseValidatorConfiguration.java
new file mode 100755
index 0000000..d192733
--- /dev/null
+++ b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/ResponseValidatorConfiguration.java
@@ -0,0 +1,33 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.config;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.response.ResponseKeysValidators;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ResponseValidator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class ResponseValidatorConfiguration {
+
+  @Bean
+  public ResponseValidator responseHeadersUpperHyphenCaseValidator() {
+    return ResponseKeysValidators.HEADERS_UPPER_HYPHEN_CASE_VALIDATOR;
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/SchemaValidatorConfiguration.java b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/SchemaValidatorConfiguration.java
new file mode 100755
index 0000000..7aad01b
--- /dev/null
+++ b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/SchemaValidatorConfiguration.java
@@ -0,0 +1,38 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.config;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.schema.SchemaKeysValidators;
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.schema.SchemaTitleValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.SchemaValidator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class SchemaValidatorConfiguration {
+
+  @Bean
+  public SchemaValidator schemaTitleValidator() {
+    return new SchemaTitleValidator();
+  }
+
+  @Bean
+  public SchemaValidator schemaPropertiesLowerCamelCaseValidator() {
+    return SchemaKeysValidators.PROPERTIES_LOWER_CAMEL_CASE_VALIDATOR;
+  }
+}
diff --git a/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/TagValidatorConfiguration.java b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/TagValidatorConfiguration.java
new file mode 100755
index 0000000..e402d03
--- /dev/null
+++ b/oas-validator/oas-validator-compliance-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/config/TagValidatorConfiguration.java
@@ -0,0 +1,45 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.config;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.tag.TagDescriptionRequiredValidator;
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.tag.TagNameUpperCamelCaseValidator;
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.tag.TagReferenceValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.TagValidator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class TagValidatorConfiguration {
+
+  @Bean
+  public TagValidator tagDescriptionRequiredValidator() {
+    return new TagDescriptionRequiredValidator();
+  }
+
+  @Bean
+  public TagValidator tagNameUpperCamelCaseValidator() {
+    return new TagNameUpperCamelCaseValidator();
+  }
+
+  @Bean
+  public TagValidator tagReferenceValidator() {
+    return new TagReferenceValidator();
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance-spring/src/main/resources/META-INF/spring.factories b/oas-validator/oas-validator-compliance-spring/src/main/resources/META-INF/spring.factories
new file mode 100755
index 0000000..2de8e7d
--- /dev/null
+++ b/oas-validator/oas-validator-compliance-spring/src/main/resources/META-INF/spring.factories
@@ -0,0 +1,13 @@
+org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
+org.apache.servicecomb.toolkit.oasv.compliance.config.ComponentsValidatorConfiguration,\
+org.apache.servicecomb.toolkit.oasv.compliance.config.EncodingValidatorConfiguration,\
+org.apache.servicecomb.toolkit.oasv.compliance.config.HeaderValidatorConfiguration,\
+org.apache.servicecomb.toolkit.oasv.compliance.config.InfoValidatorConfiguration,\
+org.apache.servicecomb.toolkit.oasv.compliance.config.OpenApiValidatorConfiguration,\
+org.apache.servicecomb.toolkit.oasv.compliance.config.OperationValidatorConfiguration,\
+org.apache.servicecomb.toolkit.oasv.compliance.config.ParameterValidatorConfiguration,\
+org.apache.servicecomb.toolkit.oasv.compliance.config.PathsValidatorConfiguration,\
+org.apache.servicecomb.toolkit.oasv.compliance.config.RequestBodyValidatorConfiguration,\
+org.apache.servicecomb.toolkit.oasv.compliance.config.ResponseValidatorConfiguration,\
+org.apache.servicecomb.toolkit.oasv.compliance.config.SchemaValidatorConfiguration,\
+org.apache.servicecomb.toolkit.oasv.compliance.config.TagValidatorConfiguration
diff --git a/oas-validator/oas-validator-compliance/pom.xml b/oas-validator/oas-validator-compliance/pom.xml
new file mode 100755
index 0000000..4b61abb
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/pom.xml
@@ -0,0 +1,78 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one or more
+  ~ contributor license agreements.  See the NOTICE file distributed with
+  ~ this work for additional information regarding copyright ownership.
+  ~ The ASF licenses this file to You under the Apache License, Version 2.0
+  ~ (the "License"); you may not use this file except in compliance with
+  ~ the License.  You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.apache.servicecomb.toolkit</groupId>
+    <artifactId>oas-validator-parent</artifactId>
+    <version>0.2.0-SNAPSHOT</version>
+    <relativePath>../pom.xml</relativePath>
+  </parent>
+
+  <groupId>org.apache.servicecomb.toolkit</groupId>
+  <artifactId>oas-validator-compliance</artifactId>
+
+  <dependencies>
+
+    <dependency>
+      <groupId>org.apache.servicecomb.toolkit</groupId>
+      <artifactId>oas-validator-core</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+
+    <!-- test deps -->
+    <dependency>
+      <groupId>org.apache.servicecomb.toolkit</groupId>
+      <artifactId>oas-validator-test</artifactId>
+      <version>${project.version}</version>
+      <scope>test</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>org.apache.servicecomb.toolkit</groupId>
+      <artifactId>oas-validator-core-spring</artifactId>
+      <version>${project.version}</version>
+      <scope>test</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-test</artifactId>
+      <scope>test</scope>
+    </dependency>
+
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-surefire-plugin</artifactId>
+      </plugin>
+
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-surefire-report-plugin</artifactId>
+      </plugin>
+    </plugins>
+  </build>
+
+</project>
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsKeysValidators.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsKeysValidators.java
new file mode 100755
index 0000000..b78cb0d
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsKeysValidators.java
@@ -0,0 +1,59 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.components;
+
+import org.apache.servicecomb.toolkit.oasv.util.StringCaseUtils;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.validation.skeleton.components.*;
+
+public abstract class ComponentsKeysValidators {
+
+  public static final ComponentsCallbacksKeysValidator CALLBACKS_UPPER_CAMEL_CASE_VALIDATOR = new ComponentsCallbacksKeysValidator(
+    key -> StringCaseUtils.isUpperCamelCase(key),
+    key -> ViolationMessages.UPPER_CAMEL_CASE
+  );
+  public static final ComponentsExamplesKeysValidator EXAMPLES_UPPER_CAMEL_CASE_VALIDATOR = new ComponentsExamplesKeysValidator(
+    key -> StringCaseUtils.isUpperCamelCase(key),
+    key -> ViolationMessages.UPPER_CAMEL_CASE
+  );
+  public static final ComponentsHeadersKeysValidator HEADERS_UPPER_HYPHEN_CASE_VALIDATOR = new ComponentsHeadersKeysValidator(
+    key -> StringCaseUtils.isUpperHyphenCase(key),
+    key -> ViolationMessages.UPPER_HYPHEN_CASE
+  );
+  public static final ComponentsLinksKeysValidator LINKS_UPPER_CAMEL_CASE_VALIDATOR = new ComponentsLinksKeysValidator(
+    key -> StringCaseUtils.isUpperCamelCase(key),
+    key -> ViolationMessages.UPPER_CAMEL_CASE
+  );
+  public static final ComponentsParametersKeysValidator PARAMETERS_UPPER_CAMEL_CASE_VALIDATOR = new ComponentsParametersKeysValidator(
+    key -> StringCaseUtils.isUpperCamelCase(key),
+    key -> ViolationMessages.UPPER_CAMEL_CASE
+  );
+  public static final ComponentsRequestBodiesKeysValidator REQUEST_BODIES_UPPER_CAMEL_CASE_VALIDATOR = new ComponentsRequestBodiesKeysValidator(
+    key -> StringCaseUtils.isUpperCamelCase(key),
+    key -> ViolationMessages.UPPER_CAMEL_CASE
+  );
+  public static final ComponentsResponsesKeysValidator RESPONSES_UPPER_CAMEL_CASE_VALIDATOR = new ComponentsResponsesKeysValidator(
+    key -> StringCaseUtils.isUpperCamelCase(key),
+    key -> ViolationMessages.UPPER_CAMEL_CASE
+  );
+  public static final ComponentsSchemasKeysValidator SCHEMAS_UPPER_CAMEL_CASE_VALIDATOR = new ComponentsSchemasKeysValidator(
+    key -> StringCaseUtils.isUpperCamelCase(key),
+    key -> ViolationMessages.UPPER_CAMEL_CASE
+  );
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/encoding/EncodingKeysValidators.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/encoding/EncodingKeysValidators.java
new file mode 100755
index 0000000..62c86e0
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/encoding/EncodingKeysValidators.java
@@ -0,0 +1,31 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.encoding;
+
+import org.apache.servicecomb.toolkit.oasv.util.StringCaseUtils;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.validation.skeleton.encoding.EncodingHeadersKeysValidator;
+
+public abstract class EncodingKeysValidators {
+
+  public static final EncodingHeadersKeysValidator HEADERS_UPPER_HYPHEN_CASE_VALIDATOR = new EncodingHeadersKeysValidator(
+    key -> StringCaseUtils.isUpperHyphenCase(key),
+    key -> ViolationMessages.UPPER_HYPHEN_CASE
+  );
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/header/HeaderDescriptionRequiredValidator.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/header/HeaderDescriptionRequiredValidator.java
new file mode 100755
index 0000000..31f2016
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/header/HeaderDescriptionRequiredValidator.java
@@ -0,0 +1,56 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.header;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.HeaderValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ObjectPropertyRequiredValidator;
+import io.swagger.v3.oas.models.headers.Header;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#headerObject">Header Object</a>
+ * .description属性校验器
+ * <ul>
+ * <li>必须填写</li>
+ * </ul>
+ */
+public class HeaderDescriptionRequiredValidator
+  extends ObjectPropertyRequiredValidator<Header, String>
+  implements HeaderValidator {
+
+  @Override
+  protected String get$ref(Header oasObject) {
+    return oasObject.get$ref();
+  }
+
+  @Override
+  protected String getPropertyObject(Header oasObject) {
+    return oasObject.getDescription();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "description";
+  }
+
+  @Override
+  protected OasObjectType getPropertyType() {
+    return null;
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/info/InfoDescriptionRequiredValidator.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/info/InfoDescriptionRequiredValidator.java
new file mode 100755
index 0000000..d30ce4e
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/info/InfoDescriptionRequiredValidator.java
@@ -0,0 +1,56 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.info;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.InfoValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ObjectPropertyRequiredValidator;
+import io.swagger.v3.oas.models.info.Info;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#infoObject">Info Object</a>属性校验器
+ * <ul>
+ * <li>description必须填写</li>
+ * <li>version必须和Api版本一致</li>
+ * </ul>
+ */
+public class InfoDescriptionRequiredValidator
+  extends ObjectPropertyRequiredValidator<Info, String>
+  implements InfoValidator {
+
+  @Override
+  protected String get$ref(Info oasObject) {
+    return null;
+  }
+
+  @Override
+  protected String getPropertyObject(Info oasObject) {
+    return oasObject.getDescription();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "description";
+  }
+
+  @Override
+  protected OasObjectType getPropertyType() {
+    return null;
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/OpenApiSecurityEmptyValidator.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/OpenApiSecurityEmptyValidator.java
new file mode 100755
index 0000000..432b0f7
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/OpenApiSecurityEmptyValidator.java
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.openapi;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasValidationContext;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OpenApiValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.apache.commons.collections4.CollectionUtils;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.SECURITY_REQUIREMENT;
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#openapi-object">OpenAPI Object</a>
+ * .security属性校验器
+ * <ul>
+ * <li>不允许提供</li>
+ * </ul>
+ */
+public class OpenApiSecurityEmptyValidator implements OpenApiValidator {
+
+  @Override
+  public List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location,
+    OpenAPI openAPI) {
+
+    if (CollectionUtils.isEmpty(openAPI.getSecurity())) {
+      return emptyList();
+
+    }
+
+    return singletonList(
+      new OasViolation(location.property("security", SECURITY_REQUIREMENT), ViolationMessages.MUST_BE_EMPTY));
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/OpenApiTagNotEmptyValidator.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/OpenApiTagNotEmptyValidator.java
new file mode 100755
index 0000000..ac92737
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/OpenApiTagNotEmptyValidator.java
@@ -0,0 +1,53 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.openapi;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasValidationContext;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OpenApiValidator;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.apache.commons.collections4.CollectionUtils;
+
+import java.util.List;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#openapi-object">OpenAPI Object</a>
+ * .tags(List of <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#tagObject">Tag Object</a>)大小校验器
+ * <ul>
+ *   <li>数量至少为一</li>
+ * </ul>
+ */
+public class OpenApiTagNotEmptyValidator implements OpenApiValidator {
+
+  @Override
+  public List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location, OpenAPI openAPI) {
+
+    if (CollectionUtils.isEmpty(openAPI.getTags())) {
+      return singletonList(new OasViolation(location.property("tags", OasObjectType.TAG), "至少提供一个"));
+
+    }
+    return emptyList();
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/OpenApiVersionValidator.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/OpenApiVersionValidator.java
new file mode 100755
index 0000000..3b3faca
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/OpenApiVersionValidator.java
@@ -0,0 +1,53 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.openapi;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.*;
+import io.swagger.v3.oas.models.OpenAPI;
+
+import java.util.List;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#openapi-object">OpenAPI Object</a>
+ * .openapi属性校验器
+ * <ul>
+ * <li>必须为3.0.x且>=3.0.2</li>
+ * </ul>
+ */
+public class OpenApiVersionValidator implements OpenApiValidator {
+
+  @Override
+  public List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location, OpenAPI openAPI) {
+
+    if (openAPI.getOpenapi() == null) {
+      return singletonList(new OasViolation(location.property("openapi"), ViolationMessages.REQUIRED));
+    }
+
+    String[] semver = openAPI.getOpenapi().split("\\.");
+    boolean ok = semver[0].equals("3") && semver[1].equals("0") && Integer.parseInt(semver[2]) >= 2;
+    if (ok) {
+      return emptyList();
+    }
+    return singletonList(new OasViolation(location.property("openapi"), "必须>=3.0.2"));
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationIdLowerCamelCaseValidator.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationIdLowerCamelCaseValidator.java
new file mode 100755
index 0000000..8463915
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationIdLowerCamelCaseValidator.java
@@ -0,0 +1,47 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.operation;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.util.StringCaseUtils;
+import org.apache.servicecomb.toolkit.oasv.validation.api.*;
+import io.swagger.v3.oas.models.Operation;
+
+import java.util.List;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#operationObject">Operation Object</a>
+ * operationId. 属性校验器lower camel case
+ * </ul>
+ */
+public class OperationIdLowerCamelCaseValidator implements OperationValidator {
+
+  @Override
+  public List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location,
+    Operation oasObject) {
+
+    if (!StringCaseUtils.isLowerCamelCase(oasObject.getOperationId())) {
+      return singletonList(new OasViolation(location.property("operationId"), ViolationMessages.LOWER_CAMEL_CASE));
+    }
+    return emptyList();
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationServersEmptyValidator.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationServersEmptyValidator.java
new file mode 100755
index 0000000..f09c7b1
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationServersEmptyValidator.java
@@ -0,0 +1,50 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.operation;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasValidationContext;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OperationValidator;
+import io.swagger.v3.oas.models.Operation;
+import org.apache.commons.collections4.CollectionUtils;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.SERVER;
+import static org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages.MUST_BE_EMPTY;
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#operationObject">Operation Object</a>
+ * .servers属性校验器
+ * <ul>
+ * <li>不允许提供</li>
+ * </ul>
+ */
+public class OperationServersEmptyValidator implements OperationValidator {
+  @Override
+  public List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location,
+    Operation oasObject) {
+    if (CollectionUtils.isEmpty(oasObject.getServers())) {
+      return emptyList();
+    }
+    return singletonList(new OasViolation(location.property("servers", SERVER), MUST_BE_EMPTY));
+  }
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationSummaryRequiredValidator.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationSummaryRequiredValidator.java
new file mode 100755
index 0000000..c3aac20
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationSummaryRequiredValidator.java
@@ -0,0 +1,56 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.operation;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OperationValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ObjectPropertyRequiredValidator;
+import io.swagger.v3.oas.models.Operation;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#operationObject">Operation Object</a>
+ * .summary属性校验器
+ * <ul>
+ * <li>必填</li>
+ * </ul>
+ */
+public class OperationSummaryRequiredValidator
+  extends ObjectPropertyRequiredValidator<Operation, String>
+  implements OperationValidator {
+
+  @Override
+  protected String get$ref(Operation oasObject) {
+    return null;
+  }
+
+  @Override
+  protected String getPropertyObject(Operation oasObject) {
+    return oasObject.getSummary();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "summary";
+  }
+
+  @Override
+  protected OasObjectType getPropertyType() {
+    return null;
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationTagsOnlyOneValidator.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationTagsOnlyOneValidator.java
new file mode 100755
index 0000000..d271bbb
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationTagsOnlyOneValidator.java
@@ -0,0 +1,54 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.operation;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasValidationContext;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OperationValidator;
+import io.swagger.v3.oas.models.Operation;
+import org.apache.commons.collections4.CollectionUtils;
+
+import java.util.List;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#operationObject">Operation Object</a>
+ * .tags属性校验器
+ * <ul>
+ * <li>必须写一个</li>
+ * <li>必须在OpenAPI Object的tags属性里有对应property: description,rule:必填</li>
+ * </ul>
+ */
+public class OperationTagsOnlyOneValidator implements OperationValidator {
+
+  @Override
+  public List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location,
+    Operation oasObject) {
+
+    List<String> tags = oasObject.getTags();
+    if (CollectionUtils.size(tags) != 1) {
+      return singletonList(
+        new OasViolation(location.property("tags"), "必须提供且只提供一个tag"));
+    }
+    return emptyList();
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationTagsReferenceValidator.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationTagsReferenceValidator.java
new file mode 100755
index 0000000..07cc988
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationTagsReferenceValidator.java
@@ -0,0 +1,76 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.operation;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasValidationContext;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OperationValidator;
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.Operation;
+import io.swagger.v3.oas.models.tags.Tag;
+import org.apache.commons.collections4.CollectionUtils;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Set;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.emptySet;
+import static java.util.stream.Collectors.toSet;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#operationObject">Operation Object</a>
+ * .tags属性校验器
+ * <ul>
+ * <li>必须在OpenAPI Object的tags属性里有对应</li>
+ * </ul>
+ */
+public class OperationTagsReferenceValidator implements OperationValidator {
+
+  @Override
+  public List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location,
+    Operation oasObject) {
+
+    List<String> tags = oasObject.getTags();
+    if (CollectionUtils.isEmpty(tags)) {
+      return emptyList();
+    }
+
+    List<OasViolation> violations = new ArrayList<>();
+
+    Set<String> globalTagNames = getGlobalTagNames(context.getOpenAPI());
+    for (int i = 0; i < tags.size(); i++) {
+      String tagName = tags.get(i);
+      if (!globalTagNames.contains(tagName)) {
+        violations.add(
+          new OasViolation(location.property("tags[" + i + "]"), "不在$.tags所定义的范围内"));
+      }
+    }
+
+    return violations;
+  }
+
+  public Set<String> getGlobalTagNames(OpenAPI openAPI) {
+    if (CollectionUtils.isEmpty(openAPI.getTags())) {
+      return emptySet();
+    }
+    return openAPI.getTags().stream().map(Tag::getName).collect(toSet());
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterCookieLowerCamelCaseValidator.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterCookieLowerCamelCaseValidator.java
new file mode 100755
index 0000000..1a77169
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterCookieLowerCamelCaseValidator.java
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.util.StringCaseUtils;
+import org.apache.servicecomb.toolkit.oasv.validation.api.*;
+import io.swagger.v3.oas.models.parameters.Parameter;
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.List;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#parameterObject">Parameter Object</a>
+ * .name 属性校验器
+ * <ul>
+ * <li>如果in=cookie,必须lower camel case</li>
+ * </ul>
+ */
+public class ParameterCookieLowerCamelCaseValidator implements ParameterValidator {
+  @Override
+  public List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location,
+    Parameter oasObject) {
+
+    if (StringUtils.isNotBlank(oasObject.get$ref())) {
+      return emptyList();
+    }
+
+    if (!"cookie".equalsIgnoreCase(oasObject.getIn())) {
+      return emptyList();
+    }
+
+    if (!StringCaseUtils.isLowerCamelCase(oasObject.getName())) {
+      return singletonList(new OasViolation(location.property("name"), ViolationMessages.LOWER_CAMEL_CASE));
+    }
+
+    return emptyList();
+  }
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterDescriptionRequiredValidator.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterDescriptionRequiredValidator.java
new file mode 100755
index 0000000..653d1fb
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterDescriptionRequiredValidator.java
@@ -0,0 +1,56 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ParameterValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ObjectPropertyRequiredValidator;
+import io.swagger.v3.oas.models.parameters.Parameter;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#parameterObject">Parameter Object</a>
+ * .description 属性校验器
+ * <ul>
+ * <li>必须提供</li>
+ * </ul>
+ */
+public class ParameterDescriptionRequiredValidator
+  extends ObjectPropertyRequiredValidator<Parameter, String>
+  implements ParameterValidator {
+
+  @Override
+  protected String get$ref(Parameter oasObject) {
+    return oasObject.get$ref();
+  }
+
+  @Override
+  protected String getPropertyObject(Parameter oasObject) {
+    return oasObject.getDescription();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "description";
+  }
+
+  @Override
+  protected OasObjectType getPropertyType() {
+    return null;
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterHeaderUpperHyphenCaseValidator.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterHeaderUpperHyphenCaseValidator.java
new file mode 100755
index 0000000..8b0b5e5
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterHeaderUpperHyphenCaseValidator.java
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.util.StringCaseUtils;
+import org.apache.servicecomb.toolkit.oasv.validation.api.*;
+import io.swagger.v3.oas.models.parameters.Parameter;
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.List;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#parameterObject">Parameter Object</a>
+ * .name 属性校验器
+ * <ul>
+ * <li>如果in=header,必须是upper hyphen case</li>
+ * </ul>
+ */
+public class ParameterHeaderUpperHyphenCaseValidator implements ParameterValidator {
+  @Override
+  public List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location,
+    Parameter oasObject) {
+
+    if (StringUtils.isNotBlank(oasObject.get$ref())) {
+      return emptyList();
+    }
+
+    if (!"header".equalsIgnoreCase(oasObject.getIn())) {
+      return emptyList();
+    }
+
+    if (!StringCaseUtils.isUpperHyphenCase(oasObject.getName())) {
+      return singletonList(new OasViolation(location.property("name"), ViolationMessages.UPPER_HYPHEN_CASE));
+    }
+
+    return emptyList();
+
+  }
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterPathLowerCamelCaseValidator.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterPathLowerCamelCaseValidator.java
new file mode 100755
index 0000000..0d5f862
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterPathLowerCamelCaseValidator.java
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.util.StringCaseUtils;
+import org.apache.servicecomb.toolkit.oasv.validation.api.*;
+import io.swagger.v3.oas.models.parameters.Parameter;
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.List;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#parameterObject">Parameter Object</a>
+ * .name 属性校验器
+ * <ul>
+ * <li>如果in=path,必须lower camel case</li>
+ * </ul>
+ */
+public class ParameterPathLowerCamelCaseValidator implements ParameterValidator {
+  @Override
+  public List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location,
+    Parameter oasObject) {
+
+    if (StringUtils.isNotBlank(oasObject.get$ref())) {
+      return emptyList();
+    }
+
+    if (!"path".equalsIgnoreCase(oasObject.getIn())) {
+      return emptyList();
+    }
+
+    if (!StringCaseUtils.isLowerCamelCase(oasObject.getName())) {
+      return singletonList(new OasViolation(location.property("name"), ViolationMessages.LOWER_CAMEL_CASE));
+    }
+
+    return emptyList();
+  }
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterQueryLowerCamelCaseValidator.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterQueryLowerCamelCaseValidator.java
new file mode 100755
index 0000000..8352192
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterQueryLowerCamelCaseValidator.java
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.util.StringCaseUtils;
+import org.apache.servicecomb.toolkit.oasv.validation.api.*;
+import io.swagger.v3.oas.models.parameters.Parameter;
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.List;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#parameterObject">Parameter Object</a>
+ * .name 属性校验器
+ * <ul>
+ * <li>如果in=query,必须lower camel case</li>
+ * </ul>
+ */
+public class ParameterQueryLowerCamelCaseValidator implements ParameterValidator {
+  @Override
+  public List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location,
+    Parameter oasObject) {
+
+    if (StringUtils.isNotBlank(oasObject.get$ref())) {
+      return emptyList();
+    }
+
+    if (!"query".equalsIgnoreCase(oasObject.getIn())) {
+      return emptyList();
+    }
+
+    if (!StringCaseUtils.isLowerCamelCase(oasObject.getName())) {
+      return singletonList(new OasViolation(location.property("name"), ViolationMessages.LOWER_CAMEL_CASE));
+    }
+
+    return emptyList();
+  }
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/paths/PathsLowerCamelCaseValidator.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/paths/PathsLowerCamelCaseValidator.java
new file mode 100755
index 0000000..856e949
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/paths/PathsLowerCamelCaseValidator.java
@@ -0,0 +1,102 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.paths;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasValidationContext;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.PathsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import io.swagger.v3.oas.models.Paths;
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Set;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import static org.apache.servicecomb.toolkit.oasv.util.StringCaseUtils.isLowerCamelCase;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#pathsObject">Paths Object</a>lower camel case校验器
+ * <p>
+ *   <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#path-templating">Path Templating</a>的变量也要是lower camel case的
+ * </p>
+ */
+public class PathsLowerCamelCaseValidator implements PathsValidator {
+
+  private static final Pattern TEMPLATE_PATTERN = Pattern.compile("^\\{(.*)\\}$");
+
+  @Override
+  public List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location, Paths oasObject) {
+    List<OasViolation> violations = new ArrayList<>();
+
+    Set<String> paths = oasObject.keySet();
+
+    for (String path : paths) {
+      if (!matchCamelCase(path)) {
+        OasObjectPropertyLocation pathLoc = location.property(path, OasObjectType.PATH_ITEM);
+        violations.add(new OasViolation(pathLoc, ViolationMessages.LOWER_CAMEL_CASE));
+      }
+
+    }
+
+    return violations;
+  }
+
+  private boolean matchCamelCase(String path) {
+
+    String[] pathSegments = path.split("/");
+
+    for (String pathSegment : pathSegments) {
+      if (StringUtils.isEmpty(pathSegment)) {
+        continue;
+      }
+      String matchingPart = pathSegment;
+      if (isTemplate(pathSegment)) {
+        matchingPart = extractTemplateVariable(pathSegment);
+      }
+      if (!isLowerCamelCase(matchingPart)) {
+        return false;
+      }
+    }
+    return true;
+
+  }
+
+  /**
+   *
+   *
+   * @param pathSegment
+   * @return
+   */
+  private boolean isTemplate(String pathSegment) {
+    return TEMPLATE_PATTERN.matcher(pathSegment).matches();
+  }
+
+  private String extractTemplateVariable(String pathSegment) {
+    Matcher matcher = TEMPLATE_PATTERN.matcher(pathSegment);
+    if (matcher.matches()) {
+      return matcher.group(1);
+    }
+    return "";
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/requestbody/RequestBodyDescriptionRequiredValidator.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/requestbody/RequestBodyDescriptionRequiredValidator.java
new file mode 100755
index 0000000..dae92cc
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/requestbody/RequestBodyDescriptionRequiredValidator.java
@@ -0,0 +1,56 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.requestbody;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.RequestBodyValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ObjectPropertyRequiredValidator;
+import io.swagger.v3.oas.models.parameters.RequestBody;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#request-body-object">Request Object</a>
+ * .description 属性校验器
+ * <ul>
+ * <li>必须提供</li>
+ * </ul>
+ */
+public class RequestBodyDescriptionRequiredValidator
+  extends ObjectPropertyRequiredValidator<RequestBody, String>
+  implements RequestBodyValidator {
+
+  @Override
+  protected String get$ref(RequestBody oasObject) {
+    return oasObject.get$ref();
+  }
+
+  @Override
+  protected String getPropertyObject(RequestBody oasObject) {
+    return oasObject.getDescription();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "description";
+  }
+
+  @Override
+  protected OasObjectType getPropertyType() {
+    return null;
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/response/ResponseKeysValidators.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/response/ResponseKeysValidators.java
new file mode 100755
index 0000000..d76f961
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/response/ResponseKeysValidators.java
@@ -0,0 +1,31 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.response;
+
+import org.apache.servicecomb.toolkit.oasv.validation.skeleton.response.ResponseHeadersKeysValidator;
+
+import static org.apache.servicecomb.toolkit.oasv.util.StringCaseUtils.isUpperHyphenCase;
+import static org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages.UPPER_HYPHEN_CASE;
+
+public class ResponseKeysValidators {
+
+  public static final ResponseHeadersKeysValidator HEADERS_UPPER_HYPHEN_CASE_VALIDATOR = new ResponseHeadersKeysValidator(
+    key -> isUpperHyphenCase(key),
+    key -> UPPER_HYPHEN_CASE
+  );
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/SchemaKeysValidators.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/SchemaKeysValidators.java
new file mode 100755
index 0000000..30bda3e
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/SchemaKeysValidators.java
@@ -0,0 +1,31 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.schema;
+
+import org.apache.servicecomb.toolkit.oasv.util.StringCaseUtils;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.validation.skeleton.schema.SchemaPropertiesKeysValidator;
+
+public class SchemaKeysValidators {
+
+  public static final SchemaPropertiesKeysValidator PROPERTIES_LOWER_CAMEL_CASE_VALIDATOR = new SchemaPropertiesKeysValidator(
+    key -> StringCaseUtils.isLowerCamelCase(key),
+    key -> ViolationMessages.LOWER_CAMEL_CASE
+  );
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/SchemaTitleValidator.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/SchemaTitleValidator.java
new file mode 100755
index 0000000..e224387
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/SchemaTitleValidator.java
@@ -0,0 +1,73 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.schema;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectProperty;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.*;
+import org.apache.servicecomb.toolkit.oasv.validation.skeleton.schema.SchemaRecursiveValidatorTemplate;
+import io.swagger.v3.oas.models.media.Schema;
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.COMPONENTS;
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.SCHEMA;
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#schemaObject">Schema Object</a>.title属性校验器
+ * <ul>
+ * <li>如果Schema Object的上级是
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#schemaObject">Schema Object</a>
+ * /
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#componentsObject">Components Object</a>
+ * ,那么必须写title</li>
+ * </ul>
+ */
+public class SchemaTitleValidator extends SchemaRecursiveValidatorTemplate {
+
+  @Override
+  protected List<OasViolation> validateCurrentSchemaObject(OasValidationContext context, Schema oasObject,
+    OasObjectPropertyLocation location) {
+
+    if (StringUtils.isNotBlank(oasObject.get$ref())) {
+      return emptyList();
+    }
+
+    OasObjectProperty parentProperty = location.getParent();
+
+    if (SCHEMA == parentProperty.getObjectType()
+      || COMPONENTS == parentProperty.getObjectType()
+    ) {
+      return check(oasObject, location);
+    }
+
+    return emptyList();
+
+  }
+
+  private List<OasViolation> check(Schema oasObject, OasObjectPropertyLocation location) {
+    if (StringUtils.isNotBlank(oasObject.getTitle())) {
+      return emptyList();
+    }
+    return singletonList(
+      new OasViolation(location.property("title", null), ViolationMessages.REQUIRED));
+  }
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/TagDescriptionRequiredValidator.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/TagDescriptionRequiredValidator.java
new file mode 100755
index 0000000..219b7eb
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/TagDescriptionRequiredValidator.java
@@ -0,0 +1,56 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.tag;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.TagValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ObjectPropertyRequiredValidator;
+import io.swagger.v3.oas.models.tags.Tag;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#tagObject">Tag Object</a>
+ * .description 属性校验器
+ * <ul>
+ * <li>必填</li>
+ * </ul>
+ */
+public class TagDescriptionRequiredValidator
+  extends ObjectPropertyRequiredValidator<Tag, String>
+  implements TagValidator {
+
+  @Override
+  protected String get$ref(Tag oasObject) {
+    return null;
+  }
+
+  @Override
+  protected String getPropertyObject(Tag oasObject) {
+    return oasObject.getDescription();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "description";
+  }
+
+  @Override
+  protected OasObjectType getPropertyType() {
+    return null;
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/TagNameUpperCamelCaseValidator.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/TagNameUpperCamelCaseValidator.java
new file mode 100755
index 0000000..2bb2a9a
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/TagNameUpperCamelCaseValidator.java
@@ -0,0 +1,48 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.tag;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.*;
+import io.swagger.v3.oas.models.tags.Tag;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.util.StringCaseUtils.isUpperCamelCase;
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#tagObject">Tag Object</a>
+ * .name属性校验器
+ * <ul>
+ * <li>upper camel case</li>
+ * </ul>
+ */
+public class TagNameUpperCamelCaseValidator implements TagValidator {
+
+  @Override
+  public List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location, Tag tag) {
+
+    if (!isUpperCamelCase(tag.getName())) {
+      return singletonList(new OasViolation(location.property("name"), ViolationMessages.UPPER_CAMEL_CASE));
+    }
+    return emptyList();
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/TagReferenceValidator.java b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/TagReferenceValidator.java
new file mode 100755
index 0000000..1432489
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/main/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/TagReferenceValidator.java
@@ -0,0 +1,89 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.tag;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasValidationContext;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.TagValidator;
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.Operation;
+import io.swagger.v3.oas.models.PathItem;
+import io.swagger.v3.oas.models.Paths;
+import io.swagger.v3.oas.models.tags.Tag;
+import org.apache.commons.collections4.CollectionUtils;
+
+import java.util.*;
+
+import static java.util.Collections.emptySet;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#tagObject">Tag Object</a>引用情况校验器
+ * <ul>
+ * <li>不得存在没有被<a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#operationObject">Operation Object</a>引用的<a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#tagObject">Tag Object</a></li>
+ * </ul>
+ */
+public class TagReferenceValidator implements TagValidator {
+
+  private static final String CACHE_KEY = TagReferenceValidator.class.getName() + ".allOperationsTags";
+
+  @Override
+  public List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location, Tag tag) {
+    Set<String> allOperationsTags = getAllOperationsTags(context);
+
+    List<OasViolation> violations = new ArrayList<>();
+
+    if (!allOperationsTags.contains(tag.getName())) {
+      violations.add(new OasViolation(location, "此Tag没有被Operation Object使用过"));
+    }
+
+    return violations;
+
+  }
+
+  private Set<String> getAllOperationsTags(OasValidationContext context) {
+
+    Set<String> allTags = context.getAttribute(CACHE_KEY);
+    if (allTags != null) {
+      return allTags;
+    }
+
+    allTags = new HashSet<>();
+
+    OpenAPI openAPI = context.getOpenAPI();
+    Paths paths = openAPI.getPaths();
+    if (paths == null) {
+      return emptySet();
+    }
+
+    for (Map.Entry<String, PathItem> entry : paths.entrySet()) {
+      PathItem pathItem = entry.getValue();
+      List<Operation> operations = pathItem.readOperations();
+      for (Operation operation : operations) {
+        List<String> tags = operation.getTags();
+        if (CollectionUtils.isEmpty(tags)) {
+          continue;
+        }
+        allTags.addAll(tags);
+      }
+    }
+
+    context.setAttribute(CACHE_KEY, allTags);
+    return allTags;
+  }
+}
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/OasComplianceTestBase.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/OasComplianceTestBase.java
new file mode 100755
index 0000000..e3861e8
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/OasComplianceTestBase.java
@@ -0,0 +1,36 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator;
+
+import org.apache.servicecomb.toolkit.oasv.validation.test.OasValidatorTestBase;
+import io.swagger.v3.parser.core.models.ParseOptions;
+
+public class OasComplianceTestBase extends OasValidatorTestBase {
+
+  @Override
+  protected ParseOptions createParseOptions() {
+
+    ParseOptions parseOptions = new ParseOptions();
+    parseOptions.setResolve(true);
+    parseOptions.setResolveCombinators(false);
+    parseOptions.setResolveFully(false);
+    parseOptions.setFlatten(false);
+    return parseOptions;
+
+  }
+}
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsCallbacksUpperCamelCaseValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsCallbacksUpperCamelCaseValidatorTest.java
new file mode 100755
index 0000000..21e5354
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsCallbacksUpperCamelCaseValidatorTest.java
@@ -0,0 +1,72 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.COMPONENTS;
+import static org.apache.servicecomb.toolkit.oasv.compliance.validator.components.ComponentsKeysValidators.CALLBACKS_UPPER_CAMEL_CASE_VALIDATOR;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = ComponentsCallbacksUpperCamelCaseValidatorTest.TestConfiguration.class)
+public class ComponentsCallbacksUpperCamelCaseValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testUpperCamelCase() {
+    OpenAPI openAPI = loadRelative("petstore-callbacks-upper-camel-case.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolation(ViolationMessages.UPPER_CAMEL_CASE,
+          "components", COMPONENTS,
+          "callbacks.'onData'", null)
+      );
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public ComponentsValidator componentsValidator() {
+
+
+      return CALLBACKS_UPPER_CAMEL_CASE_VALIDATOR;
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsExamplesUpperCamelCaseValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsExamplesUpperCamelCaseValidatorTest.java
new file mode 100755
index 0000000..8aae9e7
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsExamplesUpperCamelCaseValidatorTest.java
@@ -0,0 +1,72 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.COMPONENTS;
+import static org.apache.servicecomb.toolkit.oasv.compliance.validator.components.ComponentsKeysValidators.EXAMPLES_UPPER_CAMEL_CASE_VALIDATOR;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = ComponentsExamplesUpperCamelCaseValidatorTest.TestConfiguration.class)
+public class ComponentsExamplesUpperCamelCaseValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testUpperCamelCase() {
+    OpenAPI openAPI = loadRelative("petstore-examples-upper-camel-case.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolation(ViolationMessages.UPPER_CAMEL_CASE,
+          "components", COMPONENTS,
+          "examples.'foo'", null)
+      );
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public ComponentsValidator componentsValidator() {
+
+
+      return EXAMPLES_UPPER_CAMEL_CASE_VALIDATOR;
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsHeadersUpperCamelCaseValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsHeadersUpperCamelCaseValidatorTest.java
new file mode 100755
index 0000000..b8596bf
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsHeadersUpperCamelCaseValidatorTest.java
@@ -0,0 +1,72 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.COMPONENTS;
+import static org.apache.servicecomb.toolkit.oasv.compliance.validator.components.ComponentsKeysValidators.HEADERS_UPPER_HYPHEN_CASE_VALIDATOR;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = ComponentsHeadersUpperCamelCaseValidatorTest.TestConfiguration.class)
+public class ComponentsHeadersUpperCamelCaseValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testUpperCamelCase() {
+    OpenAPI openAPI = loadRelative("petstore-headers-upper-camel-case.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolation(ViolationMessages.UPPER_HYPHEN_CASE,
+          "components", COMPONENTS,
+          "headers.'foo'", null)
+      );
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public ComponentsValidator componentsValidator() {
+
+
+      return HEADERS_UPPER_HYPHEN_CASE_VALIDATOR;
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsLinksUpperCamelCaseValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsLinksUpperCamelCaseValidatorTest.java
new file mode 100755
index 0000000..b2e0a04
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsLinksUpperCamelCaseValidatorTest.java
@@ -0,0 +1,72 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.COMPONENTS;
+import static org.apache.servicecomb.toolkit.oasv.compliance.validator.components.ComponentsKeysValidators.LINKS_UPPER_CAMEL_CASE_VALIDATOR;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = ComponentsLinksUpperCamelCaseValidatorTest.TestConfiguration.class)
+public class ComponentsLinksUpperCamelCaseValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testUpperCamelCase() {
+    OpenAPI openAPI = loadRelative("petstore-links-upper-camel-case.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolation(ViolationMessages.UPPER_CAMEL_CASE,
+          "components", COMPONENTS,
+          "links.'foo'", null)
+      );
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public ComponentsValidator componentsValidator() {
+
+
+      return LINKS_UPPER_CAMEL_CASE_VALIDATOR;
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsParametersUpperCamelCaseValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsParametersUpperCamelCaseValidatorTest.java
new file mode 100755
index 0000000..c4044da
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsParametersUpperCamelCaseValidatorTest.java
@@ -0,0 +1,72 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.COMPONENTS;
+import static org.apache.servicecomb.toolkit.oasv.compliance.validator.components.ComponentsKeysValidators.PARAMETERS_UPPER_CAMEL_CASE_VALIDATOR;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = ComponentsParametersUpperCamelCaseValidatorTest.TestConfiguration.class)
+public class ComponentsParametersUpperCamelCaseValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testUpperCamelCase() {
+    OpenAPI openAPI = loadRelative("petstore-parameters-upper-camel-case.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolation(ViolationMessages.UPPER_CAMEL_CASE,
+          "components", COMPONENTS,
+          "parameters.'foo'", null)
+      );
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public ComponentsValidator componentsValidator() {
+
+
+      return PARAMETERS_UPPER_CAMEL_CASE_VALIDATOR;
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsRequestBodiesUpperCamelCaseValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsRequestBodiesUpperCamelCaseValidatorTest.java
new file mode 100755
index 0000000..7a60f71
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsRequestBodiesUpperCamelCaseValidatorTest.java
@@ -0,0 +1,72 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.COMPONENTS;
+import static org.apache.servicecomb.toolkit.oasv.compliance.validator.components.ComponentsKeysValidators.REQUEST_BODIES_UPPER_CAMEL_CASE_VALIDATOR;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = ComponentsRequestBodiesUpperCamelCaseValidatorTest.TestConfiguration.class)
+public class ComponentsRequestBodiesUpperCamelCaseValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testUpperCamelCase() {
+    OpenAPI openAPI = loadRelative("petstore-request-bodies-upper-camel-case.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolation(ViolationMessages.UPPER_CAMEL_CASE,
+          "components", COMPONENTS,
+          "requestBodies.'foo'", null)
+      );
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public ComponentsValidator componentsValidator() {
+
+
+      return REQUEST_BODIES_UPPER_CAMEL_CASE_VALIDATOR;
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsResponsesUpperCamelCaseValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsResponsesUpperCamelCaseValidatorTest.java
new file mode 100755
index 0000000..a556201
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsResponsesUpperCamelCaseValidatorTest.java
@@ -0,0 +1,72 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.COMPONENTS;
+import static org.apache.servicecomb.toolkit.oasv.compliance.validator.components.ComponentsKeysValidators.RESPONSES_UPPER_CAMEL_CASE_VALIDATOR;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = ComponentsResponsesUpperCamelCaseValidatorTest.TestConfiguration.class)
+public class ComponentsResponsesUpperCamelCaseValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testUpperCamelCase() {
+    OpenAPI openAPI = loadRelative("petstore-responses-upper-camel-case.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolation(ViolationMessages.UPPER_CAMEL_CASE,
+          "components", COMPONENTS,
+          "responses.'foo'", null)
+      );
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public ComponentsValidator componentsValidator() {
+
+
+      return RESPONSES_UPPER_CAMEL_CASE_VALIDATOR;
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsSchemasUpperCamelCaseValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsSchemasUpperCamelCaseValidatorTest.java
new file mode 100755
index 0000000..43194e2
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/ComponentsSchemasUpperCamelCaseValidatorTest.java
@@ -0,0 +1,72 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.COMPONENTS;
+import static org.apache.servicecomb.toolkit.oasv.compliance.validator.components.ComponentsKeysValidators.SCHEMAS_UPPER_CAMEL_CASE_VALIDATOR;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = ComponentsSchemasUpperCamelCaseValidatorTest.TestConfiguration.class)
+public class ComponentsSchemasUpperCamelCaseValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testUpperCamelCase() {
+    OpenAPI openAPI = loadRelative("petstore-schemas-upper-camel-case.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolation(ViolationMessages.UPPER_CAMEL_CASE,
+          "components", COMPONENTS,
+          "schemas.'foo'", null)
+      );
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public ComponentsValidator componentsValidator() {
+
+
+      return SCHEMAS_UPPER_CAMEL_CASE_VALIDATOR;
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/header/HeaderDescriptionRequiredValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/header/HeaderDescriptionRequiredValidatorTest.java
new file mode 100755
index 0000000..fe7308d
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/header/HeaderDescriptionRequiredValidatorTest.java
@@ -0,0 +1,81 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.header;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import org.apache.servicecomb.toolkit.oasv.validation.api.HeaderValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = HeaderDescriptionRequiredValidatorTest.TestConfiguration.class)
+public class HeaderDescriptionRequiredValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testValidate() {
+    OpenAPI openAPI = loadRelative("petstore-header-no-desc.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations)
+      .containsExactlyInAnyOrder(
+        createViolation("必须提供", "components", COMPONENTS, "headers.'X-Pet-Foo'", HEADER, "description", null),
+        createViolation("必须提供",
+          "paths", PATHS,
+          "/pets", PATH_ITEM,
+          "get", OPERATION,
+          "responses", RESPONSES,
+          "200", RESPONSE,
+          "headers.'x-next'", HEADER,
+          "description", null),
+        createViolation("必须提供",
+          "paths", PATHS,
+          "/pets", PATH_ITEM,
+          "get", OPERATION,
+          "responses", RESPONSES,
+          "201", RESPONSE,
+          "content.'application/*'", MEDIA_TYPE,
+          "encoding.'abc'", ENCODING,
+          "headers.'X-Pet-Foo'", HEADER,
+          "description", null)
+      );
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public HeaderValidator headerValidator() {
+      return new HeaderDescriptionRequiredValidator();
+    }
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/info/InfoDescriptionRequiredValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/info/InfoDescriptionRequiredValidatorTest.java
new file mode 100755
index 0000000..c0c20a6
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/info/InfoDescriptionRequiredValidatorTest.java
@@ -0,0 +1,62 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.info;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import org.apache.servicecomb.toolkit.oasv.validation.api.InfoValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.INFO;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = InfoDescriptionRequiredValidatorTest.TestConfiguration.class)
+public class InfoDescriptionRequiredValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testValidate() {
+    OpenAPI openAPI = loadRelative("petstore-info-no-desc.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).hasSize(1);
+    assertThat(violations).containsExactly(createViolation("必须提供", "info", INFO, "description", null));
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public InfoValidator infoValidator() {
+      return new InfoDescriptionRequiredValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/OpenApiSecurityEmptyValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/OpenApiSecurityEmptyValidatorTest.java
new file mode 100755
index 0000000..e86c9ea
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/OpenApiSecurityEmptyValidatorTest.java
@@ -0,0 +1,67 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.openapi;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OpenApiValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.SECURITY_REQUIREMENT;
+import static org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages.MUST_BE_EMPTY;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = OpenApiSecurityEmptyValidatorTest.TestConfiguration.class)
+public class OpenApiSecurityEmptyValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testValidate() {
+    OpenAPI openAPI = loadRelative("petstore-security-empty.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactly(createViolation(MUST_BE_EMPTY, "security", SECURITY_REQUIREMENT));
+  }
+
+  @Test
+  public void testValidateGood() {
+    OpenAPI openAPI = loadRelative("petstore-security-empty-good.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).isEmpty();
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+    @Bean
+
+    public OpenApiValidator openApiValidator() {
+
+      return new OpenApiSecurityEmptyValidator();
+    }
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/OpenApiTagsSizeValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/OpenApiTagsSizeValidatorTest.java
new file mode 100755
index 0000000..fa45cd6
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/OpenApiTagsSizeValidatorTest.java
@@ -0,0 +1,60 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.openapi;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OpenApiValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.TAG;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = OpenApiTagsSizeValidatorTest.TestConfiguration.class)
+public class OpenApiTagsSizeValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testValidate() {
+    OpenAPI openAPI = loadRelative("petstore-tag-not-provided.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).hasSize(1);
+    assertThat(violations).containsExactly(createViolation("至少提供一个", "tags", TAG));
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+    @Bean
+
+    public OpenApiValidator openApiValidator() {
+
+      return new OpenApiTagNotEmptyValidator();
+    }
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/OpenApiVersionValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/OpenApiVersionValidatorTest.java
new file mode 100755
index 0000000..e44cec6
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/OpenApiVersionValidatorTest.java
@@ -0,0 +1,61 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.openapi;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OpenApiValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = OpenApiVersionValidatorTest.TestConfiguration.class)
+public class OpenApiVersionValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testValidate() {
+    OpenAPI openAPI = loadRelative("petstore-openapi-wrong.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).hasSize(1);
+    assertThat(violations).containsExactly(createViolation("必须>=3.0.2", "openapi", null));
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public OpenApiValidator openApiValidator() {
+
+      return new OpenApiVersionValidator();
+    }
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationIdLowerCamelCaseValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationIdLowerCamelCaseValidatorTest.java
new file mode 100755
index 0000000..3c9b160
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationIdLowerCamelCaseValidatorTest.java
@@ -0,0 +1,67 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.operation;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OperationValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = OperationIdLowerCamelCaseValidatorTest.TestConfiguration.class)
+public class OperationIdLowerCamelCaseValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testValidate() {
+    OpenAPI openAPI = loadRelative("petstore-operation-id-lower-camel-case.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactly(
+      createViolation(ViolationMessages.LOWER_CAMEL_CASE,
+        "paths", PATHS,
+        "/pets", PATH_ITEM,
+        "get", OPERATION,
+        "operationId", null));
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public OperationValidator operationValidator() {
+      return new OperationIdLowerCamelCaseValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationServersEmptyValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationServersEmptyValidatorTest.java
new file mode 100755
index 0000000..c28a005
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationServersEmptyValidatorTest.java
@@ -0,0 +1,68 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.operation;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OperationValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages.MUST_BE_EMPTY;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = OperationServersEmptyValidatorTest.TestConfiguration.class)
+public class OperationServersEmptyValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testValidate() {
+    OpenAPI openAPI = loadRelative("petstore-operation-servers-empty.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactly(
+      createViolation(MUST_BE_EMPTY,
+        "paths", PATHS,
+        "/pets", PATH_ITEM,
+        "get", OPERATION,
+        "servers", SERVER));
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public OperationValidator operationValidator() {
+      return new OperationServersEmptyValidator();
+    }
+
+  }
+
+}
+
+
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationSummaryRequiredValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationSummaryRequiredValidatorTest.java
new file mode 100755
index 0000000..c3b9266
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationSummaryRequiredValidatorTest.java
@@ -0,0 +1,67 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.operation;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OperationValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = OperationSummaryRequiredValidatorTest.TestConfiguration.class)
+public class OperationSummaryRequiredValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testValidate() {
+    OpenAPI openAPI = loadRelative("petstore-operation-summary-required.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactly(
+      createViolation(ViolationMessages.REQUIRED,
+        "paths", PATHS,
+        "/pets", PATH_ITEM,
+        "get", OPERATION,
+        "summary", null));
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public OperationValidator operationValidator() {
+      return new OperationSummaryRequiredValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationTagsOnlyOneValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationTagsOnlyOneValidatorTest.java
new file mode 100755
index 0000000..7a158ef
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationTagsOnlyOneValidatorTest.java
@@ -0,0 +1,66 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.operation;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OperationValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = OperationTagsOnlyOneValidatorTest.TestConfiguration.class)
+public class OperationTagsOnlyOneValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testValidate() {
+    OpenAPI openAPI = loadRelative("petstore-operation-tags-only-one.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactly(
+      createViolation("必须提供且只提供一个tag",
+        "paths", PATHS,
+        "/pets", PATH_ITEM,
+        "get", OPERATION,
+        "tags", null));
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public OperationValidator operationValidator() {
+      return new OperationTagsOnlyOneValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationTagsReferenceValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationTagsReferenceValidatorTest.java
new file mode 100755
index 0000000..94929df
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/OperationTagsReferenceValidatorTest.java
@@ -0,0 +1,66 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.operation;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OperationValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = OperationTagsReferenceValidatorTest.TestConfiguration.class)
+public class OperationTagsReferenceValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testValidate() {
+    OpenAPI openAPI = loadRelative("petstore-operation-tags-reference.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactly(
+      createViolation("不在$.tags所定义的范围内",
+        "paths", PATHS,
+        "/pets", PATH_ITEM,
+        "get", OPERATION,
+        "tags[0]", null));
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public OperationValidator operationValidator() {
+      return new OperationTagsReferenceValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterCookieLowerCamelCaseValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterCookieLowerCamelCaseValidatorTest.java
new file mode 100755
index 0000000..7d87862
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterCookieLowerCamelCaseValidatorTest.java
@@ -0,0 +1,77 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ParameterValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = ParameterCookieLowerCamelCaseValidatorTest.TestConfiguration.class)
+public class ParameterCookieLowerCamelCaseValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testValidate() {
+    OpenAPI openAPI = loadRelative("petstore-parameter-cookie-lower-camel-case.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactlyInAnyOrder(
+      createViolation(
+        ViolationMessages.LOWER_CAMEL_CASE,
+        "paths", PATHS,
+        "/pets/{petId}", PATH_ITEM,
+        "get", OPERATION,
+        "parameters[1]", PARAMETER,
+        "name", null
+      ),
+      createViolation(
+        ViolationMessages.LOWER_CAMEL_CASE,
+        "components", COMPONENTS,
+        "parameters.'Bar'", PARAMETER,
+        "name", null
+      )
+    );
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public ParameterValidator parameterValidator() {
+      return new ParameterCookieLowerCamelCaseValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterDescriptionRequiredValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterDescriptionRequiredValidatorTest.java
new file mode 100755
index 0000000..29ad2a8
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterDescriptionRequiredValidatorTest.java
@@ -0,0 +1,76 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ParameterValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = ParameterDescriptionRequiredValidatorTest.TestConfiguration.class)
+public class ParameterDescriptionRequiredValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testValidate() {
+    OpenAPI openAPI = loadRelative("petstore-parameter-desc-none.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactlyInAnyOrder(
+      createViolation(
+        ViolationMessages.REQUIRED,
+        "paths", PATHS,
+        "/pets/{petId}", PATH_ITEM,
+        "get", OPERATION,
+        "parameters[0]", PARAMETER,
+        "description", null
+      ),
+      createViolation(
+        ViolationMessages.REQUIRED,
+        "components", COMPONENTS,
+        "parameters.'Bar'", PARAMETER,
+        "description", null
+      )
+    );
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+    public ParameterValidator parameterValidator() {
+      return new ParameterDescriptionRequiredValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterHeaderUpperHyphenCaseValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterHeaderUpperHyphenCaseValidatorTest.java
new file mode 100755
index 0000000..90d97a3
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterHeaderUpperHyphenCaseValidatorTest.java
@@ -0,0 +1,77 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ParameterValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = ParameterHeaderUpperHyphenCaseValidatorTest.TestConfiguration.class)
+public class ParameterHeaderUpperHyphenCaseValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testValidate() {
+    OpenAPI openAPI = loadRelative("petstore-parameter-header-upper-hyphen-case.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactlyInAnyOrder(
+      createViolation(
+        ViolationMessages.UPPER_HYPHEN_CASE,
+        "paths", PATHS,
+        "/pets/{petId}", PATH_ITEM,
+        "get", OPERATION,
+        "parameters[1]", PARAMETER,
+        "name", null
+      ),
+      createViolation(
+        ViolationMessages.UPPER_HYPHEN_CASE,
+        "components", COMPONENTS,
+        "parameters.'Bar'", PARAMETER,
+        "name", null
+      )
+    );
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public ParameterValidator parameterValidator() {
+      return new ParameterHeaderUpperHyphenCaseValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterPathLowerCamelCaseValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterPathLowerCamelCaseValidatorTest.java
new file mode 100755
index 0000000..0f6fe35
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterPathLowerCamelCaseValidatorTest.java
@@ -0,0 +1,77 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ParameterValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = ParameterPathLowerCamelCaseValidatorTest.TestConfiguration.class)
+public class ParameterPathLowerCamelCaseValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testValidate() {
+    OpenAPI openAPI = loadRelative("petstore-parameter-path-lower-camel-case.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactlyInAnyOrder(
+      createViolation(
+        ViolationMessages.LOWER_CAMEL_CASE,
+        "paths", PATHS,
+        "/pets/{PetId}", PATH_ITEM,
+        "get", OPERATION,
+        "parameters[0]", PARAMETER,
+        "name", null
+      ),
+      createViolation(
+        ViolationMessages.LOWER_CAMEL_CASE,
+        "components", COMPONENTS,
+        "parameters.'Bar'", PARAMETER,
+        "name", null
+      )
+    );
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public ParameterValidator parameterValidator() {
+      return new ParameterPathLowerCamelCaseValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterQueryLowerCamelCaseValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterQueryLowerCamelCaseValidatorTest.java
new file mode 100755
index 0000000..062f351
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/ParameterQueryLowerCamelCaseValidatorTest.java
@@ -0,0 +1,77 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ParameterValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = ParameterQueryLowerCamelCaseValidatorTest.TestConfiguration.class)
+public class ParameterQueryLowerCamelCaseValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testValidate() {
+    OpenAPI openAPI = loadRelative("petstore-parameter-query-lower-camel-case.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactlyInAnyOrder(
+      createViolation(
+        ViolationMessages.LOWER_CAMEL_CASE,
+        "paths", PATHS,
+        "/pets/{petId}", PATH_ITEM,
+        "get", OPERATION,
+        "parameters[1]", PARAMETER,
+        "name", null
+      ),
+      createViolation(
+        ViolationMessages.LOWER_CAMEL_CASE,
+        "components", COMPONENTS,
+        "parameters.'Bar'", PARAMETER,
+        "name", null
+      )
+    );
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public ParameterValidator parameterValidator() {
+      return new ParameterQueryLowerCamelCaseValidator();
+    }
+
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/paths/PathsLowerCamelCaseValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/paths/PathsLowerCamelCaseValidatorTest.java
new file mode 100755
index 0000000..d18c470
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/paths/PathsLowerCamelCaseValidatorTest.java
@@ -0,0 +1,76 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.paths;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.PathsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.PATHS;
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.PATH_ITEM;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = PathsLowerCamelCaseValidatorTest.TestConfiguration.class)
+public class PathsLowerCamelCaseValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testValidate() {
+    OpenAPI openAPI = loadRelative("petstore-paths-lower-camel-case.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactlyInAnyOrder(
+      createViolation(
+        ViolationMessages.LOWER_CAMEL_CASE,
+        "paths", PATHS,
+        "/pets/{PetId}", PATH_ITEM
+      ),
+      createViolation(
+        ViolationMessages.LOWER_CAMEL_CASE,
+        "paths", PATHS,
+        "/Pets", PATH_ITEM
+      )
+    );
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public PathsValidator pathsValidator() {
+
+      return new PathsLowerCamelCaseValidator();
+    }
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/requestbody/RequestBodyDescriptionRequiredValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/requestbody/RequestBodyDescriptionRequiredValidatorTest.java
new file mode 100755
index 0000000..d220ce9
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/requestbody/RequestBodyDescriptionRequiredValidatorTest.java
@@ -0,0 +1,77 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.requestbody;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.RequestBodyValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = RequestBodyDescriptionRequiredValidatorTest.TestConfiguration.class)
+public class RequestBodyDescriptionRequiredValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testValidate() {
+    OpenAPI openAPI = loadRelative("petstore-request-body-desc-required.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactlyInAnyOrder(
+      createViolation(
+        ViolationMessages.REQUIRED,
+        "paths", PATHS,
+        "/pets", PATH_ITEM,
+        "post", OPERATION,
+        "requestBody", REQUEST_BODY,
+        "description", null
+      ),
+      createViolation(
+        ViolationMessages.REQUIRED,
+        "components", COMPONENTS,
+        "requestBodies.'Foo'", REQUEST_BODY,
+        "description", null
+      )
+    );
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public RequestBodyValidator requestBodyValidator() {
+
+      return new RequestBodyDescriptionRequiredValidator();
+    }
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/SchemaPropertiesKeysLowerCamelCaseValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/SchemaPropertiesKeysLowerCamelCaseValidatorTest.java
new file mode 100755
index 0000000..9683586
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/SchemaPropertiesKeysLowerCamelCaseValidatorTest.java
@@ -0,0 +1,251 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.schema;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.SchemaValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.*;
+import static org.apache.servicecomb.toolkit.oasv.compliance.validator.schema.SchemaKeysValidators.PROPERTIES_LOWER_CAMEL_CASE_VALIDATOR;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaPropertiesKeysLowerCamelCaseValidatorTest.TestConfiguration.class)
+public class SchemaPropertiesKeysLowerCamelCaseValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testValidateParameter1() {
+    OpenAPI openAPI = loadRelative("petstore-schema-p-keys-lower-camel-case-param-1.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactlyInAnyOrder(
+      createViolation(
+        ViolationMessages.LOWER_CAMEL_CASE,
+        "paths", PATHS,
+        "/pets", PATH_ITEM,
+        "get", OPERATION,
+        "parameters[0]", PARAMETER,
+        "schema", SCHEMA,
+        "properties.'Foo'", null
+      )
+    );
+  }
+
+  @Test
+  public void testValidateParameter2() {
+    OpenAPI openAPI = loadRelative("petstore-schema-p-keys-lower-camel-case-param-2.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactlyInAnyOrder(
+      createViolation(
+        ViolationMessages.LOWER_CAMEL_CASE,
+        "components", COMPONENTS,
+        "parameters.'Foo'", PARAMETER,
+        "schema", SCHEMA,
+        "properties.'Foo'", null
+      )
+    );
+  }
+
+  @Test
+  public void testResponse1() {
+    OpenAPI openAPI = loadRelative("petstore-schema-p-keys-lower-camel-case-resp-1.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactlyInAnyOrder(
+      createViolation(
+        ViolationMessages.LOWER_CAMEL_CASE,
+        "paths", PATHS,
+        "/pets", PATH_ITEM,
+        "get", OPERATION,
+        "responses", RESPONSES,
+        "200", RESPONSE,
+        "content.'application/json'", MEDIA_TYPE,
+        "schema", SCHEMA,
+        "properties.'Foo'", null
+      )
+    );
+  }
+
+  @Test
+  public void testResponse2() {
+    OpenAPI openAPI = loadRelative("petstore-schema-p-keys-lower-camel-case-resp-2.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactlyInAnyOrder(
+      createViolation(
+        ViolationMessages.LOWER_CAMEL_CASE,
+        "components", COMPONENTS,
+        "responses.'Foo'", RESPONSE,
+        "content.'application/json'", MEDIA_TYPE,
+        "schema", SCHEMA,
+        "properties.'Foo'", null
+      )
+    );
+  }
+
+  @Test
+  public void testRequestBody1() {
+    OpenAPI openAPI = loadRelative("petstore-schema-p-keys-lower-camel-case-req-1.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactlyInAnyOrder(
+      createViolation(
+        ViolationMessages.LOWER_CAMEL_CASE,
+        "paths", PATHS,
+        "/pets", PATH_ITEM,
+        "post", OPERATION,
+        "requestBody", REQUEST_BODY,
+        "content.'application/json'", MEDIA_TYPE,
+        "schema", SCHEMA,
+        "properties.'Foo'", null
+      )
+    );
+  }
+
+  @Test
+  public void testRequestBody2() {
+    OpenAPI openAPI = loadRelative("petstore-schema-p-keys-lower-camel-case-req-2.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactlyInAnyOrder(
+      createViolation(
+        ViolationMessages.LOWER_CAMEL_CASE,
+        "components", COMPONENTS,
+        "requestBodies.'Foo'", REQUEST_BODY,
+        "content.'application/json'", MEDIA_TYPE,
+        "schema", SCHEMA,
+        "properties.'Foo'", null
+      )
+    );
+  }
+
+  @Test
+  public void testComponent() {
+    OpenAPI openAPI = loadRelative("petstore-schema-p-keys-lower-camel-case-comp.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactlyInAnyOrder(
+      createViolation(
+        ViolationMessages.LOWER_CAMEL_CASE,
+        "components", COMPONENTS,
+        "schemas.'Foo'", SCHEMA,
+        "properties.'Foo'", null
+      )
+    );
+  }
+
+  @Test
+  public void testNested() {
+    OpenAPI openAPI = loadRelative("petstore-schema-p-keys-lower-camel-case-nested.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactlyInAnyOrder(
+      createViolation(
+        ViolationMessages.LOWER_CAMEL_CASE,
+        "components", COMPONENTS,
+        "schemas.'Foo'", SCHEMA,
+        "properties.'Foo'", null
+      ),
+      createViolation(
+        ViolationMessages.LOWER_CAMEL_CASE,
+        "components", COMPONENTS,
+        "schemas.'Foo'", SCHEMA,
+        "properties.'Foo'", SCHEMA,
+        "properties.'Bar'", null
+      )
+    );
+  }
+
+  @Test
+  public void testAllOf() {
+    OpenAPI openAPI = loadRelative("petstore-schema-p-keys-lower-camel-case-all-of.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactlyInAnyOrder(
+      createViolation(
+        ViolationMessages.LOWER_CAMEL_CASE,
+        "components", COMPONENTS,
+        "schemas.'Foo'", SCHEMA,
+        "allOf[0]", SCHEMA,
+        "properties.'Foo'", null
+      )
+    );
+  }
+
+  @Test
+  public void testAnyOf() {
+    OpenAPI openAPI = loadRelative("petstore-schema-p-keys-lower-camel-case-any-of.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactlyInAnyOrder(
+      createViolation(
+        ViolationMessages.LOWER_CAMEL_CASE,
+        "components", COMPONENTS,
+        "schemas.'Foo'", SCHEMA,
+        "anyOf[0]", SCHEMA,
+        "properties.'Foo'", null
+      )
+    );
+  }
+
+  @Test
+  public void testOneOf() {
+    OpenAPI openAPI = loadRelative("petstore-schema-p-keys-lower-camel-case-one-of.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactlyInAnyOrder(
+      createViolation(
+        ViolationMessages.LOWER_CAMEL_CASE,
+        "components", COMPONENTS,
+        "schemas.'Foo'", SCHEMA,
+        "oneOf[0]", SCHEMA,
+        "properties.'Foo'", null
+      )
+    );
+  }
+
+  @Test
+  public void testArray() {
+    OpenAPI openAPI = loadRelative("petstore-schema-p-keys-lower-camel-case-array.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactlyInAnyOrder(
+      createViolation(
+        ViolationMessages.LOWER_CAMEL_CASE,
+        "components", COMPONENTS,
+        "schemas.'Foo'", SCHEMA,
+        "items", SCHEMA,
+        "properties.'Foo'", null
+      )
+    );
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public SchemaValidator schemaValidator() {
+
+      return PROPERTIES_LOWER_CAMEL_CASE_VALIDATOR;
+    }
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/SchemaTitleValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/SchemaTitleValidatorTest.java
new file mode 100755
index 0000000..86b5207
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/SchemaTitleValidatorTest.java
@@ -0,0 +1,104 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.schema;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.SchemaValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ViolationMessages;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.COMPONENTS;
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.SCHEMA;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = SchemaTitleValidatorTest.TestConfiguration.class)
+public class SchemaTitleValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testValidateComponents() {
+    OpenAPI openAPI = loadRelative("petstore-schema-title-comp.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactlyInAnyOrder(
+      createViolation(
+        ViolationMessages.REQUIRED,
+        "components", COMPONENTS,
+        "schemas.'Foo'", SCHEMA,
+        "title", null
+      )
+    );
+  }
+
+  @Test
+  public void testValidateNested() {
+    OpenAPI openAPI = loadRelative("petstore-schema-title-nested.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).containsExactlyInAnyOrder(
+      createViolation(
+        ViolationMessages.REQUIRED,
+        "components", COMPONENTS,
+        "schemas.'Foo'", SCHEMA,
+        "properties.'Foo'", SCHEMA,
+        "title", null
+      )
+    );
+  }
+
+  @Test
+  public void testValidateParameter() {
+    OpenAPI openAPI = loadRelative("petstore-schema-title-param.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).isEmpty();
+  }
+
+  @Test
+  public void testValidateRequestBody() {
+    OpenAPI openAPI = loadRelative("petstore-schema-title-req.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).isEmpty();
+  }
+
+  @Test
+  public void testValidateResponse() {
+    OpenAPI openAPI = loadRelative("petstore-schema-title-resp.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).isEmpty();
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public SchemaValidator schemaValidator() {
+      return new SchemaTitleValidator();
+    }
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/TagDescriptionRequiredValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/TagDescriptionRequiredValidatorTest.java
new file mode 100755
index 0000000..ed34531
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/TagDescriptionRequiredValidatorTest.java
@@ -0,0 +1,61 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.tag;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.TagValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.TAG;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = TagDescriptionRequiredValidatorTest.TestConfiguration.class)
+public class TagDescriptionRequiredValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testValidate() {
+    OpenAPI openAPI = loadRelative("petstore-tag-no-desc.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).hasSize(1);
+    assertThat(violations)
+      .containsExactly(createViolation("必须提供", "tags[0]", TAG, "description", null));
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+    @Bean
+
+    public TagValidator tagDescriptionRequiredValidator() {
+      return new TagDescriptionRequiredValidator();
+    }
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/TagNameUpperCamelCaseValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/TagNameUpperCamelCaseValidatorTest.java
new file mode 100755
index 0000000..c958e66
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/TagNameUpperCamelCaseValidatorTest.java
@@ -0,0 +1,63 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.tag;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.TagValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.TAG;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = TagNameUpperCamelCaseValidatorTest.TestConfiguration.class)
+public class TagNameUpperCamelCaseValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testValidate() {
+    OpenAPI openAPI = loadRelative("petstore-tag-name-not-upper-camel-case.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).hasSize(1);
+    assertThat(violations)
+      .containsExactly(createViolation("必须为upper camel case", "tags[0]", TAG, "name", null));
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+
+    @Bean
+
+    public TagValidator tagNameUpperCamelCaseValidator() {
+      return new TagNameUpperCamelCaseValidator();
+    }
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/TagReferenceValidatorTest.java b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/TagReferenceValidatorTest.java
new file mode 100755
index 0000000..2a9a78b
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/java/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/TagReferenceValidatorTest.java
@@ -0,0 +1,62 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.compliance.validator.tag;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.TagValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration;
+
+import org.apache.servicecomb.toolkit.oasv.compliance.validator.OasComplianceTestBase;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.TAG;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ContextConfiguration(classes = TagReferenceValidatorTest.TestConfiguration.class)
+public class TagReferenceValidatorTest extends OasComplianceTestBase {
+
+  @Test
+  public void testValidate() {
+    OpenAPI openAPI = loadRelative("petstore-tag-redundant.yaml");
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    assertThat(violations).hasSize(1);
+    assertThat(violations)
+      .containsExactly(createViolation("此Tag没有被Operation Object使用过", "tags[1]", TAG));
+  }
+
+  @Configuration
+  @Import({
+    OasValidatorsSkeletonConfiguration.class
+  })
+  public static class TestConfiguration {
+    @Bean
+
+    public TagValidator tagReferenceValidator() {
+      return new TagReferenceValidator();
+    }
+  }
+
+}
+
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-callbacks-upper-camel-case.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-callbacks-upper-camel-case.yaml
new file mode 100755
index 0000000..3f7314d
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-callbacks-upper-camel-case.yaml
@@ -0,0 +1,124 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            x-next:
+              description: A link to the next page of responses
+              schema:
+                type: string
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
+  callbacks:
+    onData:
+      '{$request.query.callbackUrl}/data':
+        post:
+          requestBody:
+            description: subscription payload
+            content:
+              application/json:
+                schema:
+                  properties:
+                    timestamp:
+                      type: string
+                      format: date-time
+                    userData:
+                      type: string
+          responses:
+            '202':
+              description: |
+                Your server implementation should return this HTTP status code
+                if the data was received successfully
+    OnData:
+      '{$request.query.callbackUrl}/data':
+        post:
+          requestBody:
+            description: subscription payload
+            content:
+              application/json:
+                schema:
+                  properties:
+                    timestamp:
+                      type: string
+                      format: date-time
+                    userData:
+                      type: string
+          responses:
+            '202':
+              description: |
+                Your server implementation should return this HTTP status code
+                if the data was received successfully
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-examples-upper-camel-case.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-examples-upper-camel-case.yaml
new file mode 100755
index 0000000..1b98e3c
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-examples-upper-camel-case.yaml
@@ -0,0 +1,90 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            x-next:
+              description: A link to the next page of responses
+              schema:
+                type: string
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
+  examples:
+    foo:
+      description: abc
+    Foo:
+      description: xyz
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-headers-upper-camel-case.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-headers-upper-camel-case.yaml
new file mode 100755
index 0000000..aadb5d5
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-headers-upper-camel-case.yaml
@@ -0,0 +1,90 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            x-next:
+              description: A link to the next page of responses
+              schema:
+                type: string
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
+  headers:
+    foo:
+      description: blah blah
+    X-Foo:
+      description: blah blah
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-links-upper-camel-case.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-links-upper-camel-case.yaml
new file mode 100755
index 0000000..416f9c8
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-links-upper-camel-case.yaml
@@ -0,0 +1,90 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            x-next:
+              description: A link to the next page of responses
+              schema:
+                type: string
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
+  links:
+    foo:
+      description: abc
+    Foo:
+      description: abc
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-parameters-upper-camel-case.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-parameters-upper-camel-case.yaml
new file mode 100755
index 0000000..5997d3e
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-parameters-upper-camel-case.yaml
@@ -0,0 +1,96 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            x-next:
+              description: A link to the next page of responses
+              schema:
+                type: string
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
+  parameters:
+    foo:
+      in: query
+      name: foo
+      schema:
+        type: string
+    Foo:
+      in: query
+      name: foo
+      schema:
+        type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-request-bodies-upper-camel-case.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-request-bodies-upper-camel-case.yaml
new file mode 100755
index 0000000..7993eed
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-request-bodies-upper-camel-case.yaml
@@ -0,0 +1,104 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            x-next:
+              description: A link to the next page of responses
+              schema:
+                type: string
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
+    foo:
+      required:
+        - code
+      properties:
+        code:
+          type: string
+  requestBodies:
+    foo:
+      description: blah
+      content:
+        text/plain:
+          schema:
+            type: string
+    Foo:
+      description: blah
+      content:
+        text/plain:
+          schema:
+            type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-responses-upper-camel-case.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-responses-upper-camel-case.yaml
new file mode 100755
index 0000000..836c1b7
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-responses-upper-camel-case.yaml
@@ -0,0 +1,90 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            x-next:
+              description: A link to the next page of responses
+              schema:
+                type: string
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
+  responses:
+    foo:
+      description: blah blah
+    Foo:
+      description: blah blah
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-schemas-upper-camel-case.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-schemas-upper-camel-case.yaml
new file mode 100755
index 0000000..dae4993
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/components/petstore-schemas-upper-camel-case.yaml
@@ -0,0 +1,91 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            x-next:
+              description: A link to the next page of responses
+              schema:
+                type: string
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
+    foo:
+      required:
+        - code
+      properties:
+        code:
+          type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/header/petstore-header-no-desc.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/header/petstore-header-no-desc.yaml
new file mode 100755
index 0000000..3ef7c5b
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/header/petstore-header-no-desc.yaml
@@ -0,0 +1,143 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            x-next:
+              schema:
+                type: string
+            X-Pet-Bar:
+              $ref: '#/components/headers/X-Pet-Foo'
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        '201':
+          description: A paged array of pets
+          content:
+            application/*:
+              encoding:
+                abc:
+                  contentType: application/json
+                  headers:
+                    X-Pet-Foo:
+                      schema:
+                        type: string
+                    X-Pet-Bar:
+                      $ref: '#/components/headers/X-Pet-Foo'
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+    post:
+      summary: Create a pet
+      operationId: createPets
+      tags:
+        - pets
+      responses:
+        '201':
+          description: Null response
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+  /pets/{petId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: petId
+          in: path
+          required: true
+          description: The id of the pet to retrieve
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  headers:
+    X-Pet-Foo:
+      schema:
+        type: string
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/info/petstore-info-no-desc.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/info/petstore-info-no-desc.yaml
new file mode 100755
index 0000000..bf7bfc4
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/info/petstore-info-no-desc.yaml
@@ -0,0 +1,125 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            x-next:
+              description: A link to the next page of responses
+              schema:
+                type: string
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+    post:
+      summary: Create a pet
+      operationId: createPets
+      tags:
+        - pets
+      responses:
+        '201':
+          description: Null response
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+  /pets/{petId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: petId
+          in: path
+          required: true
+          description: The id of the pet to retrieve
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/petstore-openapi-wrong.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/petstore-openapi-wrong.yaml
new file mode 100755
index 0000000..bf7bfc4
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/petstore-openapi-wrong.yaml
@@ -0,0 +1,125 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            x-next:
+              description: A link to the next page of responses
+              schema:
+                type: string
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+    post:
+      summary: Create a pet
+      operationId: createPets
+      tags:
+        - pets
+      responses:
+        '201':
+          description: Null response
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+  /pets/{petId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: petId
+          in: path
+          required: true
+          description: The id of the pet to retrieve
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/petstore-security-empty-good.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/petstore-security-empty-good.yaml
new file mode 100755
index 0000000..2375106
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/petstore-security-empty-good.yaml
@@ -0,0 +1,30 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/petstore-security-empty.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/petstore-security-empty.yaml
new file mode 100755
index 0000000..6d36b03
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/petstore-security-empty.yaml
@@ -0,0 +1,33 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      responses:
+        '200':
+          description: A paged array of pets
+security:
+  - oauth2:
+      - foo
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/petstore-tag-not-provided.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/petstore-tag-not-provided.yaml
new file mode 100755
index 0000000..bf7bfc4
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/openapi/petstore-tag-not-provided.yaml
@@ -0,0 +1,125 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            x-next:
+              description: A link to the next page of responses
+              schema:
+                type: string
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+    post:
+      summary: Create a pet
+      operationId: createPets
+      tags:
+        - pets
+      responses:
+        '201':
+          description: Null response
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+  /pets/{petId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: petId
+          in: path
+          required: true
+          description: The id of the pet to retrieve
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/petstore-operation-id-lower-camel-case.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/petstore-operation-id-lower-camel-case.yaml
new file mode 100755
index 0000000..a97613d
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/petstore-operation-id-lower-camel-case.yaml
@@ -0,0 +1,125 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: ListPets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            x-next:
+              description: A link to the next page of responses
+              schema:
+                type: string
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+    post:
+      summary: Create a pet
+      operationId: createPets
+      tags:
+        - pets
+      responses:
+        '201':
+          description: Null response
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+  /pets/{petId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: petId
+          in: path
+          required: true
+          description: The id of the pet to retrieve
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/petstore-operation-servers-empty.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/petstore-operation-servers-empty.yaml
new file mode 100755
index 0000000..f2b116c
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/petstore-operation-servers-empty.yaml
@@ -0,0 +1,38 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      operationId: listPets
+      responses:
+        '200':
+          description: A paged array of pets
+      servers:
+        - url: http://localhost:8080
+    post:
+      operationId: showPetById
+      responses:
+        '200':
+          description: Expected response to a valid request
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/petstore-operation-summary-required.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/petstore-operation-summary-required.yaml
new file mode 100755
index 0000000..cf2d403
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/petstore-operation-summary-required.yaml
@@ -0,0 +1,124 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      operationId: listPets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            x-next:
+              description: A link to the next page of responses
+              schema:
+                type: string
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+    post:
+      summary: Create a pet
+      operationId: createPets
+      tags:
+        - pets
+      responses:
+        '201':
+          description: Null response
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+  /pets/{petId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: petId
+          in: path
+          required: true
+          description: The id of the pet to retrieve
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/petstore-operation-tags-only-one.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/petstore-operation-tags-only-one.yaml
new file mode 100755
index 0000000..28c9399
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/petstore-operation-tags-only-one.yaml
@@ -0,0 +1,126 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      tags:
+        - pets
+        - dogs
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            x-next:
+              description: A link to the next page of responses
+              schema:
+                type: string
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+    post:
+      summary: Create a pet
+      operationId: createPets
+      tags:
+        - pets
+      responses:
+        '201':
+          description: Null response
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+  /pets/{petId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: petId
+          in: path
+          required: true
+          description: The id of the pet to retrieve
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/petstore-operation-tags-reference.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/petstore-operation-tags-reference.yaml
new file mode 100755
index 0000000..3088b03
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/operation/petstore-operation-tags-reference.yaml
@@ -0,0 +1,128 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+tags:
+  - name: pets
+    description: blah blah
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      tags:
+        - dogs
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            x-next:
+              description: A link to the next page of responses
+              schema:
+                type: string
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+    post:
+      summary: Create a pet
+      operationId: createPets
+      tags:
+        - pets
+      responses:
+        '201':
+          description: Null response
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+  /pets/{petId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: petId
+          in: path
+          required: true
+          description: The id of the pet to retrieve
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/petstore-parameter-cookie-lower-camel-case.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/petstore-parameter-cookie-lower-camel-case.yaml
new file mode 100755
index 0000000..17832f5
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/petstore-parameter-cookie-lower-camel-case.yaml
@@ -0,0 +1,88 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets/{petId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: petId
+          in: path
+          required: true
+          schema:
+            type: string
+        - name: Bar
+          in: cookie
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
+  parameters:
+    Bar:
+      in: cookie
+      name: Bar
+      schema:
+        type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/petstore-parameter-desc-none.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/petstore-parameter-desc-none.yaml
new file mode 100755
index 0000000..56995f0
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/petstore-parameter-desc-none.yaml
@@ -0,0 +1,84 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets/{petId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: petId
+          in: path
+          required: true
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
+  parameters:
+    Bar:
+      in: query
+      name: bar
+      schema:
+        type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/petstore-parameter-header-upper-hyphen-case.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/petstore-parameter-header-upper-hyphen-case.yaml
new file mode 100755
index 0000000..364aa1f
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/petstore-parameter-header-upper-hyphen-case.yaml
@@ -0,0 +1,88 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets/{petId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: petId
+          in: path
+          required: true
+          schema:
+            type: string
+        - name: x-bar
+          in: header
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
+  parameters:
+    Bar:
+      in: header
+      name: x-bar
+      schema:
+        type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/petstore-parameter-path-lower-camel-case.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/petstore-parameter-path-lower-camel-case.yaml
new file mode 100755
index 0000000..87c783f
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/petstore-parameter-path-lower-camel-case.yaml
@@ -0,0 +1,84 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets/{PetId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: PetId
+          in: path
+          required: true
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
+  parameters:
+    Bar:
+      in: path
+      name: Bar
+      schema:
+        type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/petstore-parameter-query-lower-camel-case.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/petstore-parameter-query-lower-camel-case.yaml
new file mode 100755
index 0000000..6c4f930
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/parameter/petstore-parameter-query-lower-camel-case.yaml
@@ -0,0 +1,88 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets/{petId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: petId
+          in: path
+          required: true
+          schema:
+            type: string
+        - name: Bar
+          in: query
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
+  parameters:
+    Bar:
+      in: query
+      name: Bar
+      schema:
+        type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/paths/petstore-paths-lower-camel-case.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/paths/petstore-paths-lower-camel-case.yaml
new file mode 100755
index 0000000..c633741
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/paths/petstore-paths-lower-camel-case.yaml
@@ -0,0 +1,127 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /Pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            x-next:
+              description: A link to the next page of responses
+              schema:
+                type: string
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+  /pets:
+    get:
+      operationId: listPets2
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+
+  /pets/{PetId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: PetId
+          in: path
+          required: true
+          description: The id of the pet to retrieve
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/requestbody/petstore-request-body-desc-required.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/requestbody/petstore-request-body-desc-required.yaml
new file mode 100755
index 0000000..fa72944
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/requestbody/petstore-request-body-desc-required.yaml
@@ -0,0 +1,105 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    post:
+      summary: Create a pet
+      operationId: createPets
+      tags:
+        - pets
+      requestBody:
+        content:
+          text/plain:
+            schema:
+              type: string
+      responses:
+        '201':
+          description: Null response
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+  /pets/{petId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: petId
+          in: path
+          required: true
+          description: The id of the pet to retrieve
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
+  requestBodies:
+    Foo:
+      content:
+        application/json:
+          schema:
+            type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-all-of.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-all-of.yaml
new file mode 100755
index 0000000..da00ce8
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-all-of.yaml
@@ -0,0 +1,40 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      responses:
+        '200':
+          description: A paged array of pets
+components:
+  schemas:
+    Foo:
+      allOf:
+        - type: object
+          properties:
+            Foo:
+              type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-any-of.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-any-of.yaml
new file mode 100755
index 0000000..9699a8c
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-any-of.yaml
@@ -0,0 +1,40 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      responses:
+        '200':
+          description: A paged array of pets
+components:
+  schemas:
+    Foo:
+      anyOf:
+        - type: object
+          properties:
+            Foo:
+              type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-array.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-array.yaml
new file mode 100755
index 0000000..915bad6
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-array.yaml
@@ -0,0 +1,41 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      responses:
+        '200':
+          description: A paged array of pets
+components:
+  schemas:
+    Foo:
+      type: array
+      items:
+        type: object
+        properties:
+          Foo:
+            type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-comp.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-comp.yaml
new file mode 100755
index 0000000..b314fa2
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-comp.yaml
@@ -0,0 +1,39 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      responses:
+        '200':
+          description: A paged array of pets
+components:
+  schemas:
+    Foo:
+      type: object
+      properties:
+        Foo:
+          type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-nested.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-nested.yaml
new file mode 100755
index 0000000..145b1c7
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-nested.yaml
@@ -0,0 +1,42 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      responses:
+        '200':
+          description: A paged array of pets
+components:
+  schemas:
+    Foo:
+      type: object
+      properties:
+        Foo:
+          type: object
+          properties:
+            Bar:
+              type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-one-of.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-one-of.yaml
new file mode 100755
index 0000000..8ca01ab
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-one-of.yaml
@@ -0,0 +1,40 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      responses:
+        '200':
+          description: A paged array of pets
+components:
+  schemas:
+    Foo:
+      oneOf:
+        - type: object
+          properties:
+            Foo:
+              type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-param-1.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-param-1.yaml
new file mode 100755
index 0000000..6d98a0e
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-param-1.yaml
@@ -0,0 +1,39 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      operationId: listPets
+      parameters:
+        - name: foo
+          in: query
+          schema:
+            type: object
+            properties:
+              Foo:
+                type: string
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-param-2.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-param-2.yaml
new file mode 100755
index 0000000..289819f
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-param-2.yaml
@@ -0,0 +1,41 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      operationId: listPets
+      responses:
+        '200':
+          description: A paged array of pets
+components:
+  parameters:
+    Foo:
+      in: query
+      name: Foo
+      schema:
+        type: object
+        properties:
+          Foo:
+            type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-req-1.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-req-1.yaml
new file mode 100755
index 0000000..823123d
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-req-1.yaml
@@ -0,0 +1,40 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    post:
+      summary: Create a pet
+      operationId: createPets
+      requestBody:
+        content:
+          application/json:
+            schema:
+              type: object
+              properties:
+                Foo:
+                  type: string
+      responses:
+        '201':
+          description: Null response
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-req-2.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-req-2.yaml
new file mode 100755
index 0000000..f700c80
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-req-2.yaml
@@ -0,0 +1,42 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    post:
+      summary: Create a pet
+      operationId: createPets
+      responses:
+        '201':
+          description: Null response
+components:
+  requestBodies:
+    Foo:
+      content:
+        application/json:
+          schema:
+            type: object
+            properties:
+              Foo:
+                type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-resp-1.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-resp-1.yaml
new file mode 100755
index 0000000..8ae4fae
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-resp-1.yaml
@@ -0,0 +1,39 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  Foo:
+                    type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-resp-2.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-resp-2.yaml
new file mode 100755
index 0000000..49eb334
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-p-keys-lower-camel-case-resp-2.yaml
@@ -0,0 +1,44 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      responses:
+        '200':
+          description: A paged array of pets
+
+components:
+  responses:
+    Foo:
+      description: A paged array of pets
+      content:
+        application/json:
+          schema:
+            type: object
+            properties:
+              Foo:
+                type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-title-comp.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-title-comp.yaml
new file mode 100755
index 0000000..4eba387
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-title-comp.yaml
@@ -0,0 +1,37 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      responses:
+        '200':
+          description: A paged array of pets
+components:
+  schemas:
+    Foo:
+      type: string
+
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-title-nested.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-title-nested.yaml
new file mode 100755
index 0000000..760101a
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-title-nested.yaml
@@ -0,0 +1,42 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      responses:
+        '200':
+          description: A paged array of pets
+components:
+  schemas:
+    Foo:
+      title: blah blah
+      type: object
+      properties:
+        Foo:
+          type: string
+
+
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-title-param.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-title-param.yaml
new file mode 100755
index 0000000..95d8952
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-title-param.yaml
@@ -0,0 +1,37 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    post:
+      summary: List all pets
+      operationId: listPets
+      parameters:
+        - name: foo
+          in: query
+          schema:
+            type: string
+      responses:
+        '200':
+          description: A paged array of pets
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-title-req.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-title-req.yaml
new file mode 100755
index 0000000..b37b177
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-title-req.yaml
@@ -0,0 +1,38 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    post:
+      summary: List all pets
+      operationId: listPets
+      requestBody:
+        content:
+          application/json:
+            schema:
+              type: string
+      responses:
+        '200':
+          description: A paged array of pets
+
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-title-resp.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-title-resp.yaml
new file mode 100755
index 0000000..96f12e0
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/schema/petstore-schema-title-resp.yaml
@@ -0,0 +1,37 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    post:
+      summary: List all pets
+      operationId: listPets
+      responses:
+        '200':
+          description: A paged array of pets
+          content:
+            application/json:
+              schema:
+                type: string
+
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/petstore-tag-name-not-upper-camel-case.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/petstore-tag-name-not-upper-camel-case.yaml
new file mode 100755
index 0000000..440bd96
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/petstore-tag-name-not-upper-camel-case.yaml
@@ -0,0 +1,127 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+tags:
+  - name: pets
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            x-next:
+              description: A link to the next page of responses
+              schema:
+                type: string
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+    post:
+      summary: Create a pet
+      operationId: createPets
+      tags:
+        - pets
+      responses:
+        '201':
+          description: Null response
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+  /pets/{petId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: petId
+          in: path
+          required: true
+          description: The id of the pet to retrieve
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/petstore-tag-no-desc.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/petstore-tag-no-desc.yaml
new file mode 100755
index 0000000..440bd96
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/petstore-tag-no-desc.yaml
@@ -0,0 +1,127 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+tags:
+  - name: pets
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            x-next:
+              description: A link to the next page of responses
+              schema:
+                type: string
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+    post:
+      summary: Create a pet
+      operationId: createPets
+      tags:
+        - pets
+      responses:
+        '201':
+          description: Null response
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+  /pets/{petId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: petId
+          in: path
+          required: true
+          description: The id of the pet to retrieve
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
diff --git a/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/petstore-tag-redundant.yaml b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/petstore-tag-redundant.yaml
new file mode 100755
index 0000000..9b11516
--- /dev/null
+++ b/oas-validator/oas-validator-compliance/src/test/resources/org/apache/servicecomb/toolkit/oasv/compliance/validator/tag/petstore-tag-redundant.yaml
@@ -0,0 +1,128 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+tags:
+  - name: pets
+  - name: foo
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            x-next:
+              description: A link to the next page of responses
+              schema:
+                type: string
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+    post:
+      summary: Create a pet
+      operationId: createPets
+      tags:
+        - pets
+      responses:
+        '201':
+          description: Null response
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+  /pets/{petId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: petId
+          in: path
+          required: true
+          description: The id of the pet to retrieve
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
diff --git a/oas-validator/oas-validator-core-spring/pom.xml b/oas-validator/oas-validator-core-spring/pom.xml
new file mode 100755
index 0000000..5af317e
--- /dev/null
+++ b/oas-validator/oas-validator-core-spring/pom.xml
@@ -0,0 +1,63 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one or more
+  ~ contributor license agreements.  See the NOTICE file distributed with
+  ~ this work for additional information regarding copyright ownership.
+  ~ The ASF licenses this file to You under the Apache License, Version 2.0
+  ~ (the "License"); you may not use this file except in compliance with
+  ~ the License.  You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.apache.servicecomb.toolkit</groupId>
+    <artifactId>oas-validator-parent</artifactId>
+    <version>0.2.0-SNAPSHOT</version>
+    <relativePath>../pom.xml</relativePath>
+  </parent>
+
+  <groupId>org.apache.servicecomb.toolkit</groupId>
+  <artifactId>oas-validator-core-spring</artifactId>
+  <packaging>jar</packaging>
+
+  <dependencies>
+
+    <dependency>
+      <groupId>org.apache.servicecomb.toolkit</groupId>
+      <artifactId>oas-validator-core</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter</artifactId>
+    </dependency>
+
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-surefire-plugin</artifactId>
+      </plugin>
+
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-surefire-report-plugin</artifactId>
+      </plugin>
+    </plugins>
+  </build>
+
+</project>
diff --git a/oas-validator/oas-validator-core-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/config/OasDiffValidatorsSkeletonConfiguration.java b/oas-validator/oas-validator-core-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/config/OasDiffValidatorsSkeletonConfiguration.java
new file mode 100755
index 0000000..9d2b8eb
--- /dev/null
+++ b/oas-validator/oas-validator-core-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/config/OasDiffValidatorsSkeletonConfiguration.java
@@ -0,0 +1,229 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.config;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.components.*;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.encoding.EncodingHeadersDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.header.HeaderSchemaDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.mediatype.MediaTypeEncodingDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.mediatype.MediaTypeSchemaDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.openapi.*;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.operation.OperationParametersDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.operation.OperationRequestBodyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.operation.OperationResponsesDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.parameter.ParameterContentDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.parameter.ParameterSchemaDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.pathitem.PathItemOperationsDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.pathitem.PathItemParametersDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.paths.PathsPathItemsDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.requestbody.RequestBodyContentDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.response.ResponseContentDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.response.ResponseHeadersDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.responses.ResponsesResponsesDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.schema.SchemaDiffValidatorEngine;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import java.util.List;
+
+@Configuration
+public class OasDiffValidatorsSkeletonConfiguration {
+
+  @Bean
+  public OasSpecDiffValidator oasSpecDiffValidator(List<OpenApiDiffValidator> openApiDiffValidators) {
+    return new DefaultOasSpecDiffValidator(openApiDiffValidators);
+  }
+
+  @Bean
+  public ComponentsDiffValidator componentsCallbacksDiffValidator(
+    List<CallbackDiffValidator> diffValidators) {
+    return new ComponentsCallbacksDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public ComponentsDiffValidator componentsExamplesDiffValidator(
+    List<ExampleDiffValidator> diffValidators) {
+    return new ComponentsExamplesDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public ComponentsDiffValidator componentsHeadersDiffValidator(
+    List<HeaderDiffValidator> diffValidators) {
+    return new ComponentsHeadersDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public ComponentsDiffValidator componentsLinksDiffValidator(
+    List<LinkDiffValidator> diffValidators) {
+    return new ComponentsLinksDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public ComponentsDiffValidator componentsParametersDiffValidator(
+    List<ParameterDiffValidator> diffValidators) {
+    return new ComponentsParametersDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public ComponentsDiffValidator componentsRequestBodiesDiffValidator(
+    List<RequestBodyDiffValidator> diffValidators) {
+    return new ComponentsRequestBodiesDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public ComponentsDiffValidator componentsResponsesDiffValidator(
+    List<ResponseDiffValidator> diffValidators) {
+    return new ComponentsResponsesDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public EncodingDiffValidator encodingHeadersDiffValidator(
+    List<HeaderDiffValidator> diffValidators) {
+    return new EncodingHeadersDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public HeaderDiffValidator headerSchemaDiffValidator(
+    List<SchemaDiffValidator> diffValidators) {
+    return new HeaderSchemaDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public MediaTypeDiffValidator mediaTypeEncodingDiffValidator(
+    List<EncodingDiffValidator> diffValidators) {
+    return new MediaTypeEncodingDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public MediaTypeDiffValidator mediaTypeSchemaDiffValidator(
+    List<SchemaDiffValidator> diffValidators) {
+    return new MediaTypeSchemaDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public OpenApiDiffValidator openApiComponentsDiffValidator(
+    List<ComponentsDiffValidator> diffValidators) {
+    return new OpenApiComponentsDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public OpenApiDiffValidator openApiInfoDiffValidator(
+    List<InfoDiffValidator> diffValidators) {
+    return new OpenApiInfoDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public OpenApiDiffValidator openApiPathsDiffValidator(
+    List<PathsDiffValidator> diffValidators) {
+    return new OpenApiPathsDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public OpenApiDiffValidator openApiServersDiffValidator(
+    List<ServerDiffValidator> diffValidators) {
+    return new OpenApiServersDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public OpenApiDiffValidator openApiTagsDiffValidator(
+    List<TagDiffValidator> diffValidators) {
+    return new OpenApiTagsDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public OperationDiffValidator operationParametersDiffValidator(
+    List<ParameterDiffValidator> diffValidators) {
+    return new OperationParametersDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public OperationDiffValidator operationRequestBodyDiffValidator(
+    List<RequestBodyDiffValidator> diffValidators) {
+    return new OperationRequestBodyDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public OperationDiffValidator operationResponsesDiffValidator(
+    List<ResponsesDiffValidator> diffValidators) {
+    return new OperationResponsesDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public ParameterDiffValidator parameterContentDiffValidator(
+    List<MediaTypeDiffValidator> diffValidators) {
+    return new ParameterContentDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public ParameterDiffValidator parameterSchemaDiffValidator(
+    List<SchemaDiffValidator> diffValidators) {
+    return new ParameterSchemaDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public PathItemDiffValidator pathItemOperationsDiffValidator(
+    List<OperationDiffValidator> diffValidators) {
+    return new PathItemOperationsDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public PathItemDiffValidator pathItemParametersDiffValidator(
+    List<ParameterDiffValidator> diffValidators) {
+    return new PathItemParametersDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public PathsDiffValidator pathsPathItemsDiffValidator(
+    List<PathItemDiffValidator> diffValidators) {
+    return new PathsPathItemsDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public RequestBodyDiffValidator requestBodyContentDiffValidator(
+    List<MediaTypeDiffValidator> diffValidators) {
+    return new RequestBodyContentDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public ResponseDiffValidator responseContentDiffValidator(
+    List<MediaTypeDiffValidator> diffValidators) {
+    return new ResponseContentDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public ResponseDiffValidator responseHeadersDiffValidator(
+    List<HeaderDiffValidator> diffValidators) {
+    return new ResponseHeadersDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public ResponsesDiffValidator responsesResponsesDiffValidator(
+    List<ResponseDiffValidator> diffValidators) {
+    return new ResponsesResponsesDiffValidator(diffValidators);
+  }
+
+  @Bean
+  public SchemaDiffValidator schemaDiffValidatorEngine(
+    List<SchemaAddValidator> schemaNewValidators,
+    List<SchemaDelValidator> schemaDelValidators,
+    List<SchemaCompareValidator> schemaCompareValidators) {
+    return new SchemaDiffValidatorEngine(schemaNewValidators, schemaDelValidators, schemaCompareValidators);
+  }
+
+}
diff --git a/oas-validator/oas-validator-core-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/config/OasValidatorsSkeletonConfiguration.java b/oas-validator/oas-validator-core-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/config/OasValidatorsSkeletonConfiguration.java
new file mode 100755
index 0000000..1e50064
--- /dev/null
+++ b/oas-validator/oas-validator-core-spring/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/config/OasValidatorsSkeletonConfiguration.java
@@ -0,0 +1,218 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.config;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.*;
+import org.apache.servicecomb.toolkit.oasv.validation.skeleton.components.*;
+import org.apache.servicecomb.toolkit.oasv.validation.skeleton.encoding.EncodingHeadersValuesValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.skeleton.header.HeaderSchemaValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.skeleton.mediatype.MediaTypeEncodingValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.skeleton.mediatype.MediaTypeSchemaValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.skeleton.openapi.*;
+import org.apache.servicecomb.toolkit.oasv.validation.skeleton.operation.OperationParametersValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.skeleton.operation.OperationRequestBodyValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.skeleton.operation.OperationResponsesValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.skeleton.parameter.ParameterContentValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.skeleton.parameter.ParameterSchemaValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.skeleton.pathitem.PathItemOperationsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.skeleton.pathitem.PathItemParametersValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.skeleton.paths.PathsPathItemsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.skeleton.requestbody.RequestBodyContentValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.skeleton.response.ResponseContentValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.skeleton.response.ResponseHeadersValuesValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.skeleton.responses.ResponsesResponsesValidator;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import java.util.List;
+
+/**
+ * OAS骨架Validator配置,骨架Validator只那些自己没有验证逻辑,只是将OAS Object属性交给对应OAS Validator校验的Validator
+ */
+@Configuration
+public class OasValidatorsSkeletonConfiguration {
+
+  @Bean
+  public OasSpecValidator oasSpecValidator(
+    List<OpenApiValidator> openApiValidators) {
+    return new DefaultOasSpecValidator(openApiValidators);
+  }
+
+  @Bean
+  public ComponentsValidator componentsHeadersValuesValidator(
+    List<HeaderValidator> headerValidators) {
+    return new ComponentsHeadersValuesValidator(headerValidators);
+  }
+
+  @Bean
+  public ComponentsValidator componentsParametersValuesValidator(
+    List<ParameterValidator> parameterValidators) {
+    return new ComponentsParametersValuesValidator(parameterValidators);
+  }
+
+  @Bean
+  public ComponentsValidator componentsRequestBodiesValuesValidator(
+    List<RequestBodyValidator> requestBodyValidators) {
+    return new ComponentsRequestBodiesValuesValidator(requestBodyValidators);
+  }
+
+  @Bean
+  public ComponentsValidator componentsResponsesValuesValidator(
+    List<ResponseValidator> responseValidators) {
+    return new ComponentsResponsesValuesValidator(responseValidators);
+  }
+
+  @Bean
+  public ComponentsValidator componentsSchemasValuesValidator(
+    List<SchemaValidator> schemaValidators) {
+    return new ComponentsSchemasValuesValidator(schemaValidators);
+  }
+
+  @Bean
+  public ComponentsValidator componentSecuritySchemesValidator(
+    List<SecuritySchemeValidator> securitySchemeValidators) {
+    return new ComponentsSecuritySchemesValuesValidator(securitySchemeValidators);
+  }
+
+  @Bean
+  public EncodingValidator encodingHeadersValuesValidator(
+    List<HeaderValidator> headerValidators) {
+    return new EncodingHeadersValuesValidator(headerValidators);
+  }
+
+  @Bean
+  public HeaderValidator headerSchemaValidator(
+    List<SchemaValidator> schemaValidators) {
+    return new HeaderSchemaValidator(schemaValidators);
+  }
+
+  @Bean
+  public MediaTypeValidator mediaTypeSchemaValidator(
+    List<SchemaValidator> schemaValidators) {
+    return new MediaTypeSchemaValidator(schemaValidators);
+  }
+
+  @Bean
+  public MediaTypeValidator mediaTypeEncodingValidator(
+    List<EncodingValidator> encodingValidators) {
+    return new MediaTypeEncodingValidator(encodingValidators);
+  }
+
+  @Bean
+  public OpenApiValidator openApiComponentsValidator(
+    List<ComponentsValidator> componentsValidators) {
+    return new OpenApiComponentsValidator(componentsValidators);
+  }
+
+  @Bean
+  public OpenApiValidator openApiInfoValidator(
+    List<InfoValidator> infoValidators) {
+    return new OpenApiInfoValidator(infoValidators);
+  }
+
+  @Bean
+  public OpenApiValidator openApiPathsValidator(
+    List<PathsValidator> pathsValidators) {
+    return new OpenApiPathsValidator(pathsValidators);
+  }
+
+  @Bean
+  public OpenApiValidator openApiServersValidator(
+    List<ServerValidator> serverValidators) {
+    return new OpenApiServersValidator(serverValidators);
+  }
+
+  @Bean
+  public OpenApiValidator openApiTagsValidator(
+    List<TagValidator> tagValidators) {
+    return new OpenApiTagsValidator(tagValidators);
+  }
+
+  @Bean
+  public OperationValidator operationParametersValidator(
+    List<ParameterValidator> parameterValidators) {
+    return new OperationParametersValidator(parameterValidators);
+  }
+
+  @Bean
+  public OperationValidator operationResponsesValidator(
+    List<ResponsesValidator> responsesValidators) {
+    return new OperationResponsesValidator(responsesValidators);
+  }
+
+  @Bean
+  public OperationValidator operationRequestBodyValidator(
+    List<RequestBodyValidator> requestBodyValidators) {
+    return new OperationRequestBodyValidator(requestBodyValidators);
+  }
+
+  @Bean
+  public ParameterValidator parameterSchemaValidator(
+    List<SchemaValidator> schemaValidators) {
+    return new ParameterSchemaValidator(schemaValidators);
+  }
+
+  @Bean
+  public ParameterValidator parameterContentMediaTypeValidator(
+    List<MediaTypeValidator> mediaTypeValidators) {
+    return new ParameterContentValidator(mediaTypeValidators);
+  }
+
+  @Bean
+  public PathItemValidator pathItemOperationsValidator(
+    List<OperationValidator> operationValidators) {
+    return new PathItemOperationsValidator(operationValidators);
+  }
+
+  @Bean
+  public PathItemValidator pathItemParametersValidator(
+    List<ParameterValidator> parameterValidators) {
+    return new PathItemParametersValidator(parameterValidators);
+  }
+
+  @Bean
+  public PathsValidator pathsPathItemsValidator(
+    List<PathItemValidator> pathItemValidators) {
+    return new PathsPathItemsValidator(pathItemValidators);
+  }
+
+  @Bean
+  public RequestBodyValidator requestBodyContentValidator(
+    List<MediaTypeValidator> mediaTypeValidators) {
+    return new RequestBodyContentValidator(mediaTypeValidators);
+  }
+
+  @Bean
+  public ResponsesValidator responsesResponsesValidator(
+    List<ResponseValidator> responseValidators) {
+    return new ResponsesResponsesValidator(responseValidators);
+  }
+
+  @Bean
+  public ResponseValidator responseContentValidator(
+    List<MediaTypeValidator> mediaTypeValidators) {
+    return new ResponseContentValidator(mediaTypeValidators);
+  }
+
+  @Bean
+  public ResponseValidator responseHeadersValuesValidator(
+    List<HeaderValidator> headerValidators) {
+    return new ResponseHeadersValuesValidator(headerValidators);
+  }
+
+}
diff --git a/oas-validator/oas-validator-core-spring/src/main/resources/META-INF/spring.factories b/oas-validator/oas-validator-core-spring/src/main/resources/META-INF/spring.factories
new file mode 100755
index 0000000..85fd7de
--- /dev/null
+++ b/oas-validator/oas-validator-core-spring/src/main/resources/META-INF/spring.factories
@@ -0,0 +1,3 @@
+org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
+org.apache.servicecomb.toolkit.oasv.diffvalidation.config.OasDiffValidatorsSkeletonConfiguration,\
+org.apache.servicecomb.toolkit.oasv.validation.config.OasValidatorsSkeletonConfiguration
diff --git a/oas-validator/oas-validator-core/pom.xml b/oas-validator/oas-validator-core/pom.xml
new file mode 100755
index 0000000..cc6ea34
--- /dev/null
+++ b/oas-validator/oas-validator-core/pom.xml
@@ -0,0 +1,74 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one or more
+  ~ contributor license agreements.  See the NOTICE file distributed with
+  ~ this work for additional information regarding copyright ownership.
+  ~ The ASF licenses this file to You under the Apache License, Version 2.0
+  ~ (the "License"); you may not use this file except in compliance with
+  ~ the License.  You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.apache.servicecomb.toolkit</groupId>
+    <artifactId>oas-validator-parent</artifactId>
+    <version>0.2.0-SNAPSHOT</version>
+    <relativePath>../pom.xml</relativePath>
+  </parent>
+
+  <groupId>org.apache.servicecomb.toolkit</groupId>
+  <artifactId>oas-validator-core</artifactId>
+  <packaging>jar</packaging>
+
+  <dependencies>
+
+    <dependency>
+      <groupId>org.apache.commons</groupId>
+      <artifactId>commons-lang3</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>org.apache.commons</groupId>
+      <artifactId>commons-collections4</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>io.swagger.parser.v3</groupId>
+      <artifactId>swagger-parser</artifactId>
+    </dependency>
+
+    <!-- test deps -->
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-test</artifactId>
+      <scope>test</scope>
+    </dependency>
+
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-surefire-plugin</artifactId>
+      </plugin>
+
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-surefire-report-plugin</artifactId>
+      </plugin>
+    </plugins>
+  </build>
+
+</project>
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/common/OasObjectProperty.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/common/OasObjectProperty.java
new file mode 100755
index 0000000..889dd5f
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/common/OasObjectProperty.java
@@ -0,0 +1,76 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.common;
+
+import java.util.Objects;
+import java.util.StringJoiner;
+
+/**
+ * OpenAPI V3 对象属性信息
+ */
+public class OasObjectProperty {
+
+  /**
+   * 属性名称
+   */
+  private final String name;
+
+  /**
+   * 属性的对象的类型,如果为null则代表基础类型,而不是OAS Object
+   */
+  private final OasObjectType objectType;
+
+  public OasObjectProperty(String name) {
+    this(null, name);
+  }
+
+  public OasObjectProperty(OasObjectType objectType, String name) {
+    this.objectType = objectType;
+    this.name = name;
+  }
+
+  public OasObjectType getObjectType() {
+    return objectType;
+  }
+
+  public String getName() {
+    return name;
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) return true;
+    if (o == null || getClass() != o.getClass()) return false;
+    OasObjectProperty that = (OasObjectProperty) o;
+    return objectType == that.objectType &&
+      Objects.equals(name, that.name);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(objectType, name);
+  }
+
+  @Override
+  public String toString() {
+    return new StringJoiner(", ", OasObjectProperty.class.getSimpleName() + "[", "]")
+      .add("name='" + name + "'")
+      .add("objectType=" + objectType)
+      .toString();
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/common/OasObjectPropertyLocation.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/common/OasObjectPropertyLocation.java
new file mode 100755
index 0000000..346e667
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/common/OasObjectPropertyLocation.java
@@ -0,0 +1,120 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.common;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+
+import java.util.*;
+
+import static java.util.Collections.singletonList;
+
+/**
+ * OpenAPI v3 对象所在的位置
+ * <p>本对象immutable</p>
+ */
+public class OasObjectPropertyLocation {
+
+  /**
+   * 第一个元素是根对象,最后一个元素为当前对象,组合起来形成一个找到当前对象的路径
+   */
+  private final List<OasObjectProperty> path;
+
+  private OasObjectPropertyLocation(OasObjectProperty path) {
+    this(singletonList(path));
+  }
+
+  private OasObjectPropertyLocation(List<OasObjectProperty> path) {
+    this.path = Collections.unmodifiableList(path);
+  }
+
+  /**
+   * 创建一个根Location
+   *
+   * @return
+   */
+  public static OasObjectPropertyLocation root() {
+    return new OasObjectPropertyLocation(new OasObjectProperty(OasObjectType.OPENAPI, "$"));
+  }
+
+  /**
+   * 在当前路径下添加属性路径
+   *
+   * @param propertyName 属性名称
+   * @param propertyType 属性的OAS对象类型
+   * @return 获得新的 {@link OasObjectPropertyLocation},原{@link OasObjectPropertyLocation}不变
+   */
+  public OasObjectPropertyLocation property(String propertyName, OasObjectType propertyType) {
+    ArrayList<OasObjectProperty> oasObjectProperties = new ArrayList<>(path);
+    oasObjectProperties.add(new OasObjectProperty(propertyType, propertyName));
+    return new OasObjectPropertyLocation(oasObjectProperties);
+  }
+
+  /**
+   * 在当前路径下添加非OAS Object类型的属性路径
+   *
+   * @param propertyName
+   * @return 获得新的 {@link OasObjectPropertyLocation},原{@link OasObjectPropertyLocation}不变
+   */
+  public OasObjectPropertyLocation property(String propertyName) {
+    ArrayList<OasObjectProperty> oasObjectProperties = new ArrayList<>(path);
+    oasObjectProperties.add(new OasObjectProperty(propertyName));
+    return new OasObjectPropertyLocation(oasObjectProperties);
+  }
+
+  /**
+   * 从根到属性的路径
+   *
+   * @return
+   */
+  public List<OasObjectProperty> getPath() {
+    return path;
+  }
+
+  /**
+   * 得到上级属性
+   *
+   * @return
+   */
+  @JsonIgnore
+  public OasObjectProperty getParent() {
+    if (path.size() <= 1) {
+      return null;
+    }
+    return path.get(path.size() - 2);
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) return true;
+    if (o == null || getClass() != o.getClass()) return false;
+    OasObjectPropertyLocation that = (OasObjectPropertyLocation) o;
+    return Objects.equals(path, that.path);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(path);
+  }
+
+  @Override
+  public String toString() {
+    return new StringJoiner(", ", OasObjectPropertyLocation.class.getSimpleName() + "[", "]")
+      .add("path=" + path)
+      .toString();
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/common/OasObjectType.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/common/OasObjectType.java
new file mode 100755
index 0000000..fd5ebee
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/common/OasObjectType.java
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.common;
+
+/**
+ * OpenAPI v3 的Object类型
+ * <p>
+ * 对应<a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#schema">OpenAPI Specification - Schema</a>
+ * </p>
+ */
+public enum OasObjectType {
+  OPENAPI,
+  INFO,
+  CONTACT,
+  LICENSE,
+  SERVER,
+  SERVER_VARIABLE,
+  COMPONENTS,
+  PATHS,
+  PATH_ITEM,
+  OPERATION,
+  EXTERNAL_DOCUMENTATION,
+  PARAMETER,
+  REQUEST_BODY,
+  MEDIA_TYPE,
+  ENCODING,
+  RESPONSES,
+  RESPONSE,
+  CALLBACK,
+  EXAMPLE,
+  HEADER,
+  TAG,
+  REFERENCE,
+  SCHEMA,
+  DISCRIMINATOR,
+  XML,
+  SECURITY_SCHEME,
+  OAUTH_FLOWS,
+  OAUTH_FLOW,
+  LINK,
+  SECURITY_REQUIREMENT
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/CallbackDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/CallbackDiffValidator.java
new file mode 100755
index 0000000..29e9dda
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/CallbackDiffValidator.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import io.swagger.v3.oas.models.callbacks.Callback;
+
+public interface CallbackDiffValidator extends OasObjectDiffValidator<Callback> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ComponentsDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ComponentsDiffValidator.java
new file mode 100755
index 0000000..aeaceb5
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ComponentsDiffValidator.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import io.swagger.v3.oas.models.Components;
+
+public interface ComponentsDiffValidator extends OasObjectDiffValidator<Components> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/DefaultOasSpecDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/DefaultOasSpecDiffValidator.java
new file mode 100755
index 0000000..3755f79
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/DefaultOasSpecDiffValidator.java
@@ -0,0 +1,49 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import io.swagger.v3.oas.models.OpenAPI;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static java.util.stream.Collectors.toList;
+
+public class DefaultOasSpecDiffValidator implements OasSpecDiffValidator {
+
+  private final List<OpenApiDiffValidator> openApiDiffValidators;
+
+  public DefaultOasSpecDiffValidator(List<OpenApiDiffValidator> openApiDiffValidators) {
+    this.openApiDiffValidators = new ArrayList<>(openApiDiffValidators);
+  }
+
+  @Override
+  public List<OasDiffViolation> validate(OasDiffValidationContext context, OpenAPI leftOpenApi, OpenAPI rightOpenApi) {
+
+    OasObjectPropertyLocation leftRoot = OasObjectPropertyLocation.root();
+    OasObjectPropertyLocation rightRoot = OasObjectPropertyLocation.root();
+
+    return openApiDiffValidators
+      .stream()
+      .map(validator -> validator.validate(context, leftRoot, leftOpenApi, rightRoot, rightOpenApi))
+      .flatMap(list -> list.stream())
+      .collect(toList());
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/DiffViolationMessages.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/DiffViolationMessages.java
new file mode 100755
index 0000000..167a1cc
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/DiffViolationMessages.java
@@ -0,0 +1,29 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+public abstract class DiffViolationMessages {
+
+  public static final String OP_DEL_FORBIDDEN = "不允许在新版本中删除";
+  public static final String OP_ADD_FORBIDDEN = "不允许在新版本中添加";
+
+  public static final String NEW_NOT_EQ_OLD = "新旧值不一致";
+  public static final String NEW_NOT_GTE_OLD = "新值必须>=旧值";
+  public static final String NEW_NOT_LTE_OLD = "新值必须<=旧值";
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/EncodingDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/EncodingDiffValidator.java
new file mode 100755
index 0000000..dae871d
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/EncodingDiffValidator.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import io.swagger.v3.oas.models.media.Encoding;
+
+public interface EncodingDiffValidator extends OasObjectDiffValidator<Encoding> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ExampleDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ExampleDiffValidator.java
new file mode 100755
index 0000000..59fd890
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ExampleDiffValidator.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import io.swagger.v3.oas.models.examples.Example;
+
+public interface ExampleDiffValidator extends OasObjectDiffValidator<Example> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/HeaderDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/HeaderDiffValidator.java
new file mode 100755
index 0000000..f8cf318
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/HeaderDiffValidator.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import io.swagger.v3.oas.models.headers.Header;
+
+public interface HeaderDiffValidator extends OasObjectDiffValidator<Header> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/InfoDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/InfoDiffValidator.java
new file mode 100755
index 0000000..70e187b
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/InfoDiffValidator.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import io.swagger.v3.oas.models.info.Info;
+
+public interface InfoDiffValidator extends OasObjectDiffValidator<Info> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/LinkDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/LinkDiffValidator.java
new file mode 100755
index 0000000..c9eb50c
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/LinkDiffValidator.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import io.swagger.v3.oas.models.links.Link;
+
+public interface LinkDiffValidator extends OasObjectDiffValidator<Link> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ListPropertyDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ListPropertyDiffValidator.java
new file mode 100755
index 0000000..95622ca
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ListPropertyDiffValidator.java
@@ -0,0 +1,66 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+
+import java.util.List;
+import java.util.function.Function;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasObjectDiffValidatorUtils.doDiffValidateListProperty;
+
+public abstract class ListPropertyDiffValidator<T, P>
+  extends OasObjectDiffValidatorTemplate<T> {
+
+  private final List<? extends OasObjectDiffValidator<P>> elementDiffValidators;
+
+  private final Function<P, ?> elementKeyMapper;
+
+  protected ListPropertyDiffValidator(
+    List<? extends OasObjectDiffValidator<P>> elementDiffValidators,
+    Function<P, Object> elementKeyMapper) {
+    this.elementDiffValidators = elementDiffValidators;
+    this.elementKeyMapper = elementKeyMapper;
+  }
+
+  @Override
+  public List<OasDiffViolation> validateCompare(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, T leftOasObject,
+    OasObjectPropertyLocation rightLocation, T rightOasObject) {
+
+    return doDiffValidateListProperty(
+      context,
+      getListPropertyName(),
+      leftLocation,
+      getListProperty(leftOasObject),
+      rightLocation,
+      getListProperty(rightOasObject),
+      getElementType(),
+      elementKeyMapper,
+      elementDiffValidators
+    );
+
+  }
+
+  protected abstract List<P> getListProperty(T oasObject);
+
+  protected abstract String getListPropertyName();
+
+  protected abstract OasObjectType getElementType();
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/MapPropertyDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/MapPropertyDiffValidator.java
new file mode 100755
index 0000000..7703c9b
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/MapPropertyDiffValidator.java
@@ -0,0 +1,60 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasObjectDiffValidatorUtils.doDiffValidateMapProperty;
+
+public abstract class MapPropertyDiffValidator<T, P>
+  extends OasObjectDiffValidatorTemplate<T> {
+
+  private final List<? extends OasObjectDiffValidator<P>> valueDiffValidators;
+
+  protected MapPropertyDiffValidator(List<? extends OasObjectDiffValidator<P>> valueDiffValidators) {
+    this.valueDiffValidators = valueDiffValidators;
+  }
+
+  @Override
+  protected List<OasDiffViolation> validateCompare(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, T leftOasObject, OasObjectPropertyLocation rightLocation,
+    T rightOasObject) {
+
+    return doDiffValidateMapProperty(
+      context,
+      getMapPropertyName(),
+      leftLocation,
+      getMapProperty(leftOasObject),
+      rightLocation,
+      getMapProperty(rightOasObject),
+      getValueType(),
+      valueDiffValidators
+    );
+
+  }
+
+  protected abstract Map<String, P> getMapProperty(T oasObject);
+
+  protected abstract String getMapPropertyName();
+
+  protected abstract OasObjectType getValueType();
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/MediaTypeDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/MediaTypeDiffValidator.java
new file mode 100755
index 0000000..9c51bb6
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/MediaTypeDiffValidator.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import io.swagger.v3.oas.models.media.MediaType;
+
+public interface MediaTypeDiffValidator extends OasObjectDiffValidator<MediaType> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OasDiffValidationContext.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OasDiffValidationContext.java
new file mode 100755
index 0000000..af6d1dd
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OasDiffValidationContext.java
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import io.swagger.v3.oas.models.OpenAPI;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class OasDiffValidationContext {
+
+  private final OpenAPI leftOpenAPI;
+
+  private final OpenAPI rightOpenAPI;
+
+  private final Map<String, Object> attributes = new HashMap<>();
+
+  public OasDiffValidationContext(OpenAPI leftOpenAPI, OpenAPI rightOpenAPI) {
+    this.leftOpenAPI = leftOpenAPI;
+    this.rightOpenAPI = rightOpenAPI;
+  }
+
+  public OpenAPI getLeftOpenAPI() {
+    return leftOpenAPI;
+  }
+
+  public OpenAPI getRightOpenAPI() {
+    return rightOpenAPI;
+  }
+
+  public <T> T getAttribute(String name) {
+    return (T) attributes.get(name);
+  }
+
+  public <T> void setAttribute(String name, T attr) {
+    this.attributes.put(name, attr);
+  }
+
+  public void removeAttribute(String name) {
+    this.attributes.remove(name);
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OasDiffValidationException.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OasDiffValidationException.java
new file mode 100755
index 0000000..a032193
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OasDiffValidationException.java
@@ -0,0 +1,40 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+public class OasDiffValidationException extends RuntimeException {
+  public OasDiffValidationException() {
+  }
+
+  public OasDiffValidationException(String message) {
+    super(message);
+  }
+
+  public OasDiffValidationException(String message, Throwable cause) {
+    super(message, cause);
+  }
+
+  public OasDiffValidationException(Throwable cause) {
+    super(cause);
+  }
+
+  public OasDiffValidationException(String message, Throwable cause, boolean enableSuppression,
+    boolean writableStackTrace) {
+    super(message, cause, enableSuppression, writableStackTrace);
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OasDiffViolation.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OasDiffViolation.java
new file mode 100755
index 0000000..59c8c97
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OasDiffViolation.java
@@ -0,0 +1,90 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+
+import java.util.Objects;
+import java.util.StringJoiner;
+
+public class OasDiffViolation {
+
+  /**
+   * 对象位置
+   */
+  private final OasObjectPropertyLocation leftLocation;
+
+  /**
+   * 对象位置
+   */
+  private final OasObjectPropertyLocation rightLocation;
+
+  private final String error;
+
+  public static OasDiffViolation onlyLeft(OasObjectPropertyLocation location, String error) {
+    return new OasDiffViolation(location, null, error);
+  }
+
+  public static OasDiffViolation onlyRight(OasObjectPropertyLocation location, String error) {
+    return new OasDiffViolation(null, location, error);
+  }
+
+  public OasDiffViolation(OasObjectPropertyLocation leftLocation,
+    OasObjectPropertyLocation rightLocation, String error) {
+    this.leftLocation = leftLocation;
+    this.rightLocation = rightLocation;
+    this.error = error;
+  }
+
+  public OasObjectPropertyLocation getLeftLocation() {
+    return leftLocation;
+  }
+
+  public OasObjectPropertyLocation getRightLocation() {
+    return rightLocation;
+  }
+
+  public String getError() {
+    return error;
+  }
+
+  @Override
+  public String toString() {
+    return new StringJoiner(", ", OasDiffViolation.class.getSimpleName() + "[", "]")
+      .add("leftLocation=" + leftLocation)
+      .add("rightLocation=" + rightLocation)
+      .add("error='" + error + "'")
+      .toString();
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) return true;
+    if (o == null || getClass() != o.getClass()) return false;
+    OasDiffViolation that = (OasDiffViolation) o;
+    return Objects.equals(leftLocation, that.leftLocation) &&
+      Objects.equals(rightLocation, that.rightLocation) &&
+      Objects.equals(error, that.error);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(leftLocation, rightLocation, error);
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OasObjectDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OasObjectDiffValidator.java
new file mode 100755
index 0000000..185334d
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OasObjectDiffValidator.java
@@ -0,0 +1,45 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+
+import java.util.List;
+
+/**
+ * OAS Object差异校验器接口
+ *
+ * @param <T> <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#table-of-contents">OpenAPI Specification</a>所定义的对象
+ */
+public interface OasObjectDiffValidator<T> {
+
+  /**
+   * leftOasObject 和 rightOasObject 不可同时为null
+   *
+   * @param context        差异校验上下文
+   * @param leftLocation   左侧OAS Object位置(可能为空)
+   * @param leftOasObject  左侧OAS Object(可能为空)
+   * @param rightLocation  右侧OAS Object位置(可能为空)
+   * @param rightOasObject 右侧OAS Object(可能为空)
+   * @return 差异校验违例
+   */
+  List<OasDiffViolation> validate(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, T leftOasObject,
+    OasObjectPropertyLocation rightLocation, T rightOasObject);
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OasObjectDiffValidatorTemplate.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OasObjectDiffValidatorTemplate.java
new file mode 100755
index 0000000..c081574
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OasObjectDiffValidatorTemplate.java
@@ -0,0 +1,86 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasObjectDiffValidatorUtils.assertNullGood;
+import static java.util.Collections.emptyList;
+
+public class OasObjectDiffValidatorTemplate<T> implements OasObjectDiffValidator<T> {
+
+  @Override
+  public List<OasDiffViolation> validate(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, T leftOasObject,
+    OasObjectPropertyLocation rightLocation, T rightOasObject) {
+
+    assertNullGood(leftLocation, leftOasObject, rightLocation, rightOasObject);
+    if (leftOasObject == null && rightOasObject != null) {
+      return validateAdd(context, rightLocation, rightOasObject);
+    }
+    if (leftOasObject != null && rightOasObject == null) {
+      return validateDel(context, leftLocation, leftOasObject);
+    }
+    return validateCompare(context, leftLocation, leftOasObject, rightLocation, rightOasObject);
+  }
+
+  /**
+   * 处理左边没有,右边有,即新增的情况。
+   *
+   * @param context
+   * @param rightLocation
+   * @param rightOasObject
+   * @return
+   */
+  protected List<OasDiffViolation> validateAdd(OasDiffValidationContext context, OasObjectPropertyLocation rightLocation,
+    T rightOasObject) {
+    return emptyList();
+  }
+
+  /**
+   * 处理左边有,右边没有,即删除的情况。
+   *
+   * @param context
+   * @param leftLocation
+   * @param leftOasObject
+   * @return
+   */
+  protected List<OasDiffViolation> validateDel(OasDiffValidationContext context, OasObjectPropertyLocation leftLocation,
+    T leftOasObject) {
+    return emptyList();
+  }
+
+  /**
+   * 左右两边都有的情况。要注意,左右两边Object可能是equals==true的。
+   *
+   * @param context
+   * @param leftLocation
+   * @param leftOasObject
+   * @param rightLocation
+   * @param rightOasObject
+   * @return
+   */
+  protected List<OasDiffViolation> validateCompare(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, T leftOasObject,
+    OasObjectPropertyLocation rightLocation, T rightOasObject) {
+    return emptyList();
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OasSpecDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OasSpecDiffValidator.java
new file mode 100755
index 0000000..ccd2164
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OasSpecDiffValidator.java
@@ -0,0 +1,31 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import io.swagger.v3.oas.models.OpenAPI;
+
+import java.util.List;
+
+/**
+ * OAS Spec差异校验器
+ */
+public interface OasSpecDiffValidator {
+
+  List<OasDiffViolation> validate(OasDiffValidationContext context, OpenAPI leftOpenApi, OpenAPI rightOpenApi);
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ObjectPropertyDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ObjectPropertyDiffValidator.java
new file mode 100755
index 0000000..0eb6785
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ObjectPropertyDiffValidator.java
@@ -0,0 +1,70 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasObjectDiffValidatorUtils.doDiffValidateProperty;
+
+/**
+ * OAS Object对象的对象类型的属性差异校验器
+ *
+ * @param <T> <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#table-of-contents">OpenAPI Specification</a>所定义的对象
+ * @param <P> 属性的类型
+ */
+public abstract class ObjectPropertyDiffValidator<T, P>
+  extends OasObjectDiffValidatorTemplate<T> {
+
+  private final List<? extends OasObjectDiffValidator<P>> diffValidators;
+
+  protected ObjectPropertyDiffValidator(List<? extends OasObjectDiffValidator<P>> diffValidators) {
+    this.diffValidators = diffValidators;
+  }
+
+  @Override
+  protected List<OasDiffViolation> validateCompare(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, T leftOasObject, OasObjectPropertyLocation rightLocation,
+    T rightOasObject) {
+
+    P leftProperty = getPropertyObject(leftOasObject);
+    P rightProperty = getPropertyObject(rightOasObject);
+
+    OasObjectPropertyLocation leftPropertyLoc =
+      leftProperty == null ? null : leftLocation.property(getPropertyName(), getPropertyType());
+    OasObjectPropertyLocation rightPropertyLoc =
+      rightProperty == null ? null : rightLocation.property(getPropertyName(), getPropertyType());
+
+    return doDiffValidateProperty(context, leftPropertyLoc, leftProperty, rightPropertyLoc, rightProperty,
+      diffValidators);
+
+  }
+
+  /**
+   * @param oasObject 不用担心会是null
+   * @return
+   */
+  protected abstract P getPropertyObject(T oasObject);
+
+  protected abstract String getPropertyName();
+
+  protected abstract OasObjectType getPropertyType();
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OpenApiDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OpenApiDiffValidator.java
new file mode 100755
index 0000000..b886e00
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OpenApiDiffValidator.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import io.swagger.v3.oas.models.OpenAPI;
+
+public interface OpenApiDiffValidator extends OasObjectDiffValidator<OpenAPI> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OperationDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OperationDiffValidator.java
new file mode 100755
index 0000000..6cfd998
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/OperationDiffValidator.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import io.swagger.v3.oas.models.Operation;
+
+public interface OperationDiffValidator extends OasObjectDiffValidator<Operation> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ParameterDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ParameterDiffValidator.java
new file mode 100755
index 0000000..b795c74
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ParameterDiffValidator.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import io.swagger.v3.oas.models.parameters.Parameter;
+
+public interface ParameterDiffValidator extends OasObjectDiffValidator<Parameter> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/PathItemDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/PathItemDiffValidator.java
new file mode 100755
index 0000000..062b357
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/PathItemDiffValidator.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import io.swagger.v3.oas.models.PathItem;
+
+public interface PathItemDiffValidator extends OasObjectDiffValidator<PathItem> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/PathsDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/PathsDiffValidator.java
new file mode 100755
index 0000000..b524d57
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/PathsDiffValidator.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import io.swagger.v3.oas.models.Paths;
+
+public interface PathsDiffValidator extends OasObjectDiffValidator<Paths> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/RequestBodyDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/RequestBodyDiffValidator.java
new file mode 100755
index 0000000..b3244ec
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/RequestBodyDiffValidator.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import io.swagger.v3.oas.models.parameters.RequestBody;
+
+public interface RequestBodyDiffValidator extends OasObjectDiffValidator<RequestBody> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ResponseDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ResponseDiffValidator.java
new file mode 100755
index 0000000..784d7fd
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ResponseDiffValidator.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import io.swagger.v3.oas.models.responses.ApiResponse;
+
+public interface ResponseDiffValidator extends OasObjectDiffValidator<ApiResponse> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ResponsesDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ResponsesDiffValidator.java
new file mode 100755
index 0000000..1728d14
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ResponsesDiffValidator.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import io.swagger.v3.oas.models.responses.ApiResponses;
+
+public interface ResponsesDiffValidator extends OasObjectDiffValidator<ApiResponses> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/SchemaAddValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/SchemaAddValidator.java
new file mode 100755
index 0000000..3d6847a
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/SchemaAddValidator.java
@@ -0,0 +1,38 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import io.swagger.v3.oas.models.media.Schema;
+
+import java.util.List;
+
+public interface SchemaAddValidator {
+
+  /**
+   * 左侧没有,右侧有,即新增的情况。
+   *
+   * @param context
+   * @param rightLocation
+   * @param rightOasObject 新增的Object
+   * @return
+   */
+  List<OasDiffViolation> validate(OasDiffValidationContext context, OasObjectPropertyLocation rightLocation,
+    Schema rightOasObject);
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/SchemaCompareValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/SchemaCompareValidator.java
new file mode 100755
index 0000000..38ff36e
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/SchemaCompareValidator.java
@@ -0,0 +1,46 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.schema.SchemaDiffValidatorEngine;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import io.swagger.v3.oas.models.media.Schema;
+
+import java.util.List;
+
+public interface SchemaCompareValidator {
+
+  /**
+   * 左右两侧都有的情况,比较左右两侧对象。
+   * <p>
+   * 此方法不需要比较allOf、anyOf、oneOf、items、properties
+   * </p>
+   * 这些field的递归工作由{@link SchemaDiffValidatorEngine}完成。
+   *
+   * @param context
+   * @param leftLocation
+   * @param leftOasObject
+   * @param rightLocation
+   * @param rightOasObject
+   * @return
+   */
+  List<OasDiffViolation> validate(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, Schema leftOasObject,
+    OasObjectPropertyLocation rightLocation, Schema rightOasObject);
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/SchemaDelValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/SchemaDelValidator.java
new file mode 100755
index 0000000..def61cd
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/SchemaDelValidator.java
@@ -0,0 +1,38 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import io.swagger.v3.oas.models.media.Schema;
+
+import java.util.List;
+
+public interface SchemaDelValidator {
+
+  /**
+   * 左侧有,右侧没有,即被删除的情况。
+   *
+   * @param context
+   * @param leftLocation
+   * @param leftOasObject 被删除的Object
+   * @return
+   */
+  List<OasDiffViolation> validate(
+    OasDiffValidationContext context, OasObjectPropertyLocation leftLocation, Schema leftOasObject);
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/SchemaDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/SchemaDiffValidator.java
new file mode 100755
index 0000000..9d5ea83
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/SchemaDiffValidator.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import io.swagger.v3.oas.models.media.Schema;
+
+public interface SchemaDiffValidator extends OasObjectDiffValidator<Schema> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/SecuritySchemeDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/SecuritySchemeDiffValidator.java
new file mode 100755
index 0000000..fa507a2
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/SecuritySchemeDiffValidator.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import io.swagger.v3.oas.models.security.SecurityScheme;
+
+public interface SecuritySchemeDiffValidator extends OasObjectDiffValidator<SecurityScheme> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ServerDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ServerDiffValidator.java
new file mode 100755
index 0000000..d08aa00
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/ServerDiffValidator.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import io.swagger.v3.oas.models.servers.Server;
+
+public interface ServerDiffValidator extends OasObjectDiffValidator<Server> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/TagDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/TagDiffValidator.java
new file mode 100755
index 0000000..e4a3dde
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/api/TagDiffValidator.java
@@ -0,0 +1,23 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.api;
+
+import io.swagger.v3.oas.models.tags.Tag;
+
+public interface TagDiffValidator extends OasObjectDiffValidator<Tag> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/components/ComponentsCallbacksDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/components/ComponentsCallbacksDiffValidator.java
new file mode 100755
index 0000000..9ecc771
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/components/ComponentsCallbacksDiffValidator.java
@@ -0,0 +1,54 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.CallbackDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ComponentsDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.MapPropertyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.callbacks.Callback;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.CALLBACK;
+
+public class ComponentsCallbacksDiffValidator
+  extends MapPropertyDiffValidator<Components, Callback>
+  implements ComponentsDiffValidator {
+
+  public ComponentsCallbacksDiffValidator(List<CallbackDiffValidator> diffValidators) {
+    super(diffValidators);
+  }
+
+  @Override
+  protected Map<String, Callback> getMapProperty(Components oasObject) {
+    return oasObject.getCallbacks();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "callbacks";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return CALLBACK;
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/components/ComponentsExamplesDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/components/ComponentsExamplesDiffValidator.java
new file mode 100755
index 0000000..42e86bb
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/components/ComponentsExamplesDiffValidator.java
@@ -0,0 +1,54 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ComponentsDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ExampleDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.MapPropertyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.examples.Example;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.EXAMPLE;
+
+public class ComponentsExamplesDiffValidator
+  extends MapPropertyDiffValidator<Components, Example>
+  implements ComponentsDiffValidator {
+
+  public ComponentsExamplesDiffValidator(List<ExampleDiffValidator> diffValidators) {
+    super(diffValidators);
+  }
+
+  @Override
+  protected Map<String, Example> getMapProperty(Components oasObject) {
+    return oasObject.getExamples();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "examples";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return EXAMPLE;
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/components/ComponentsHeadersDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/components/ComponentsHeadersDiffValidator.java
new file mode 100755
index 0000000..af3168c
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/components/ComponentsHeadersDiffValidator.java
@@ -0,0 +1,54 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ComponentsDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.HeaderDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.MapPropertyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.headers.Header;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.HEADER;
+
+public class ComponentsHeadersDiffValidator
+  extends MapPropertyDiffValidator<Components, Header>
+  implements ComponentsDiffValidator {
+
+  public ComponentsHeadersDiffValidator(List<HeaderDiffValidator> diffValidators) {
+    super(diffValidators);
+  }
+
+  @Override
+  protected Map<String, Header> getMapProperty(Components oasObject) {
+    return oasObject.getHeaders();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "headers";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return HEADER;
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/components/ComponentsLinksDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/components/ComponentsLinksDiffValidator.java
new file mode 100755
index 0000000..862efda
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/components/ComponentsLinksDiffValidator.java
@@ -0,0 +1,54 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ComponentsDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.LinkDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.MapPropertyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.links.Link;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.LINK;
+
+public class ComponentsLinksDiffValidator
+  extends MapPropertyDiffValidator<Components, Link>
+  implements ComponentsDiffValidator {
+
+  public ComponentsLinksDiffValidator(List<LinkDiffValidator> diffValidators) {
+    super(diffValidators);
+  }
+
+  @Override
+  protected Map<String, Link> getMapProperty(Components oasObject) {
+    return oasObject.getLinks();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "links";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return LINK;
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/components/ComponentsParametersDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/components/ComponentsParametersDiffValidator.java
new file mode 100755
index 0000000..cd55730
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/components/ComponentsParametersDiffValidator.java
@@ -0,0 +1,54 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ComponentsDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.MapPropertyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ParameterDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.parameters.Parameter;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.PARAMETER;
+
+public class ComponentsParametersDiffValidator
+  extends MapPropertyDiffValidator<Components, Parameter>
+  implements ComponentsDiffValidator {
+
+  public ComponentsParametersDiffValidator(List<ParameterDiffValidator> diffValidators) {
+    super(diffValidators);
+  }
+
+  @Override
+  protected Map<String, Parameter> getMapProperty(Components oasObject) {
+    return oasObject.getParameters();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "parameters";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return PARAMETER;
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/components/ComponentsRequestBodiesDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/components/ComponentsRequestBodiesDiffValidator.java
new file mode 100755
index 0000000..3c7b761
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/components/ComponentsRequestBodiesDiffValidator.java
@@ -0,0 +1,54 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ComponentsDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.MapPropertyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.RequestBodyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.parameters.RequestBody;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.REQUEST_BODY;
+
+public class ComponentsRequestBodiesDiffValidator
+  extends MapPropertyDiffValidator<Components, RequestBody>
+  implements ComponentsDiffValidator {
+
+  public ComponentsRequestBodiesDiffValidator(List<RequestBodyDiffValidator> diffValidators) {
+    super(diffValidators);
+  }
+
+  @Override
+  protected Map<String, RequestBody> getMapProperty(Components oasObject) {
+    return oasObject.getRequestBodies();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "requestBodies";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return REQUEST_BODY;
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/components/ComponentsResponsesDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/components/ComponentsResponsesDiffValidator.java
new file mode 100755
index 0000000..dbf6d16
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/components/ComponentsResponsesDiffValidator.java
@@ -0,0 +1,54 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ComponentsDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.MapPropertyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ResponseDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.responses.ApiResponse;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.RESPONSE;
+
+public class ComponentsResponsesDiffValidator
+  extends MapPropertyDiffValidator<Components, ApiResponse>
+  implements ComponentsDiffValidator {
+
+  public ComponentsResponsesDiffValidator(List<ResponseDiffValidator> diffValidators) {
+    super(diffValidators);
+  }
+
+  @Override
+  protected Map<String, ApiResponse> getMapProperty(Components oasObject) {
+    return oasObject.getResponses();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "responses";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return RESPONSE;
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/encoding/EncodingHeadersDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/encoding/EncodingHeadersDiffValidator.java
new file mode 100755
index 0000000..598d3ea
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/encoding/EncodingHeadersDiffValidator.java
@@ -0,0 +1,54 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.encoding;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.EncodingDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.HeaderDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.MapPropertyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.headers.Header;
+import io.swagger.v3.oas.models.media.Encoding;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.HEADER;
+
+public class EncodingHeadersDiffValidator
+  extends MapPropertyDiffValidator<Encoding, Header>
+  implements EncodingDiffValidator {
+
+  public EncodingHeadersDiffValidator(List<HeaderDiffValidator> diffValidators) {
+    super(diffValidators);
+  }
+
+  @Override
+  protected Map<String, Header> getMapProperty(Encoding oasObject) {
+    return oasObject.getHeaders();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "headers";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return HEADER;
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/header/HeaderSchemaDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/header/HeaderSchemaDiffValidator.java
new file mode 100755
index 0000000..243885d
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/header/HeaderSchemaDiffValidator.java
@@ -0,0 +1,53 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.header;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.HeaderDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ObjectPropertyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.headers.Header;
+import io.swagger.v3.oas.models.media.Schema;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.SCHEMA;
+
+public class HeaderSchemaDiffValidator
+  extends ObjectPropertyDiffValidator<Header, Schema>
+  implements HeaderDiffValidator {
+
+  public HeaderSchemaDiffValidator(List<SchemaDiffValidator> oasObjectValidators) {
+    super(oasObjectValidators);
+  }
+
+  @Override
+  protected Schema getPropertyObject(Header oasObject) {
+    return oasObject.getSchema();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "schema";
+  }
+
+  @Override
+  protected OasObjectType getPropertyType() {
+    return SCHEMA;
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/mediatype/MediaTypeEncodingDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/mediatype/MediaTypeEncodingDiffValidator.java
new file mode 100755
index 0000000..13ff283
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/mediatype/MediaTypeEncodingDiffValidator.java
@@ -0,0 +1,64 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.mediatype;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import io.swagger.v3.oas.models.media.Encoding;
+import io.swagger.v3.oas.models.media.MediaType;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.ENCODING;
+
+public class MediaTypeEncodingDiffValidator
+  extends MapPropertyDiffValidator<MediaType, Encoding>
+  implements MediaTypeDiffValidator {
+
+  public MediaTypeEncodingDiffValidator(List<EncodingDiffValidator> diffValidators) {
+    super(diffValidators);
+  }
+
+  @Override
+  public List<OasDiffViolation> validate(OasDiffValidationContext context, OasObjectPropertyLocation leftLocation,
+    MediaType leftOasObject, OasObjectPropertyLocation rightLocation, MediaType rightOasObject) {
+
+    List<OasDiffViolation> violations = super
+      .validate(context, leftLocation, leftOasObject, rightLocation, rightOasObject);
+
+    return violations;
+  }
+
+  @Override
+  protected Map<String, Encoding> getMapProperty(MediaType oasObject) {
+    return oasObject.getEncoding();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "encoding";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return ENCODING;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/mediatype/MediaTypeSchemaDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/mediatype/MediaTypeSchemaDiffValidator.java
new file mode 100755
index 0000000..2f500e0
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/mediatype/MediaTypeSchemaDiffValidator.java
@@ -0,0 +1,53 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.mediatype;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.MediaTypeDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ObjectPropertyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.SchemaDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.media.MediaType;
+import io.swagger.v3.oas.models.media.Schema;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.SCHEMA;
+
+public class MediaTypeSchemaDiffValidator
+  extends ObjectPropertyDiffValidator<MediaType, Schema> implements
+  MediaTypeDiffValidator {
+
+  public MediaTypeSchemaDiffValidator(List<SchemaDiffValidator> oasObjectValidators) {
+    super(oasObjectValidators);
+  }
+
+  @Override
+  protected Schema getPropertyObject(MediaType oasObject) {
+    return oasObject.getSchema();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "schema";
+  }
+
+  @Override
+  protected OasObjectType getPropertyType() {
+    return SCHEMA;
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/openapi/OpenApiComponentsDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/openapi/OpenApiComponentsDiffValidator.java
new file mode 100755
index 0000000..0b45034
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/openapi/OpenApiComponentsDiffValidator.java
@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.openapi;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ComponentsDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ObjectPropertyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OpenApiDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.OpenAPI;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.COMPONENTS;
+
+public class OpenApiComponentsDiffValidator
+  extends ObjectPropertyDiffValidator<OpenAPI, Components>
+  implements OpenApiDiffValidator {
+
+  public OpenApiComponentsDiffValidator(
+    List<ComponentsDiffValidator> componentsDiffValidators) {
+    super(componentsDiffValidators);
+  }
+
+  @Override
+  protected Components getPropertyObject(OpenAPI oasObject) {
+    return oasObject.getComponents();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "components";
+  }
+
+  @Override
+  protected OasObjectType getPropertyType() {
+    return COMPONENTS;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/openapi/OpenApiInfoDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/openapi/OpenApiInfoDiffValidator.java
new file mode 100755
index 0000000..dd271d2
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/openapi/OpenApiInfoDiffValidator.java
@@ -0,0 +1,54 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.openapi;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.InfoDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ObjectPropertyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OpenApiDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.info.Info;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.INFO;
+
+public class OpenApiInfoDiffValidator
+  extends ObjectPropertyDiffValidator<OpenAPI, Info>
+  implements OpenApiDiffValidator {
+
+  public OpenApiInfoDiffValidator(List<InfoDiffValidator> pathsDiffValidators) {
+    super(pathsDiffValidators);
+  }
+
+  @Override
+  protected Info getPropertyObject(OpenAPI oasObject) {
+    return oasObject.getInfo();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "info";
+  }
+
+  @Override
+  protected OasObjectType getPropertyType() {
+    return INFO;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/openapi/OpenApiPathsDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/openapi/OpenApiPathsDiffValidator.java
new file mode 100755
index 0000000..90e8b8e
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/openapi/OpenApiPathsDiffValidator.java
@@ -0,0 +1,54 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.openapi;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ObjectPropertyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OpenApiDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.PathsDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.Paths;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.PATHS;
+
+public class OpenApiPathsDiffValidator
+  extends ObjectPropertyDiffValidator<OpenAPI, Paths>
+  implements OpenApiDiffValidator {
+
+  public OpenApiPathsDiffValidator(List<PathsDiffValidator> pathsDiffValidators) {
+    super(pathsDiffValidators);
+  }
+
+  @Override
+  protected Paths getPropertyObject(OpenAPI oasObject) {
+    return oasObject.getPaths();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "paths";
+  }
+
+  @Override
+  protected OasObjectType getPropertyType() {
+    return PATHS;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/openapi/OpenApiServersDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/openapi/OpenApiServersDiffValidator.java
new file mode 100755
index 0000000..19d4ea4
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/openapi/OpenApiServersDiffValidator.java
@@ -0,0 +1,53 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.openapi;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ListPropertyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OpenApiDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ServerDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.servers.Server;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.SERVER;
+
+public class OpenApiServersDiffValidator
+  extends ListPropertyDiffValidator<OpenAPI, Server>
+  implements OpenApiDiffValidator {
+
+  public OpenApiServersDiffValidator(List<ServerDiffValidator> diffValidators) {
+    super(diffValidators, server -> server.getUrl());
+  }
+
+  @Override
+  protected List<Server> getListProperty(OpenAPI oasObject) {
+    return oasObject.getServers();
+  }
+
+  @Override
+  protected String getListPropertyName() {
+    return "servers";
+  }
+
+  @Override
+  protected OasObjectType getElementType() {
+    return SERVER;
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/openapi/OpenApiTagsDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/openapi/OpenApiTagsDiffValidator.java
new file mode 100755
index 0000000..5a18c60
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/openapi/OpenApiTagsDiffValidator.java
@@ -0,0 +1,53 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.openapi;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ListPropertyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OpenApiDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.TagDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.tags.Tag;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.TAG;
+
+public class OpenApiTagsDiffValidator
+  extends ListPropertyDiffValidator<OpenAPI, Tag>
+  implements OpenApiDiffValidator {
+
+  public OpenApiTagsDiffValidator(List<TagDiffValidator> diffValidators) {
+    super(diffValidators, tag -> tag.getName());
+  }
+
+  @Override
+  protected List<Tag> getListProperty(OpenAPI oasObject) {
+    return oasObject.getTags();
+  }
+
+  @Override
+  protected String getListPropertyName() {
+    return "tags";
+  }
+
+  @Override
+  protected OasObjectType getElementType() {
+    return TAG;
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/operation/OperationParametersDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/operation/OperationParametersDiffValidator.java
new file mode 100755
index 0000000..ae90c6f
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/operation/OperationParametersDiffValidator.java
@@ -0,0 +1,52 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.operation;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ListPropertyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OperationDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ParameterDiffValidator;
+import io.swagger.v3.oas.models.Operation;
+import io.swagger.v3.oas.models.parameters.Parameter;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.PARAMETER;
+
+public class OperationParametersDiffValidator
+  extends ListPropertyDiffValidator<Operation, Parameter>
+  implements OperationDiffValidator {
+
+  public OperationParametersDiffValidator(List<ParameterDiffValidator> parameterValidators) {
+    super(parameterValidators, parameter -> "in:" + parameter.getIn() + "/name:" + parameter.getName());
+  }
+
+  @Override
+  protected List<Parameter> getListProperty(Operation oasObject) {
+    return oasObject.getParameters();
+  }
+
+  protected String getListPropertyName() {
+    return "parameters";
+  }
+
+  protected OasObjectType getElementType() {
+    return PARAMETER;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/operation/OperationRequestBodyDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/operation/OperationRequestBodyDiffValidator.java
new file mode 100755
index 0000000..432e325
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/operation/OperationRequestBodyDiffValidator.java
@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.operation;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ObjectPropertyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OperationDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.RequestBodyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.Operation;
+import io.swagger.v3.oas.models.parameters.RequestBody;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.REQUEST_BODY;
+
+public class OperationRequestBodyDiffValidator
+  extends ObjectPropertyDiffValidator<Operation, RequestBody>
+  implements OperationDiffValidator {
+
+  public OperationRequestBodyDiffValidator(
+    List<RequestBodyDiffValidator> requestBodyDiffValidators) {
+    super(requestBodyDiffValidators);
+  }
+
+  @Override
+  protected RequestBody getPropertyObject(Operation oasObject) {
+    return oasObject.getRequestBody();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "requestBody";
+  }
+
+  @Override
+  protected OasObjectType getPropertyType() {
+    return REQUEST_BODY;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/operation/OperationResponsesDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/operation/OperationResponsesDiffValidator.java
new file mode 100755
index 0000000..7fd711e
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/operation/OperationResponsesDiffValidator.java
@@ -0,0 +1,54 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.operation;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ObjectPropertyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OperationDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ResponsesDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.Operation;
+import io.swagger.v3.oas.models.responses.ApiResponses;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.RESPONSES;
+
+public class OperationResponsesDiffValidator
+  extends ObjectPropertyDiffValidator<Operation, ApiResponses>
+  implements OperationDiffValidator {
+
+  public OperationResponsesDiffValidator(List<ResponsesDiffValidator> responsesDiffValidators) {
+    super(responsesDiffValidators);
+  }
+
+  @Override
+  protected ApiResponses getPropertyObject(Operation oasObject) {
+    return oasObject.getResponses();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "responses";
+  }
+
+  @Override
+  protected OasObjectType getPropertyType() {
+    return RESPONSES;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/parameter/ParameterContentDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/parameter/ParameterContentDiffValidator.java
new file mode 100755
index 0000000..0577207
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/parameter/ParameterContentDiffValidator.java
@@ -0,0 +1,68 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.media.MediaType;
+import io.swagger.v3.oas.models.parameters.Parameter;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.MEDIA_TYPE;
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.*;
+
+public class ParameterContentDiffValidator
+  extends MapPropertyDiffValidator<Parameter, MediaType>
+  implements ParameterDiffValidator {
+
+  public ParameterContentDiffValidator(List<MediaTypeDiffValidator> mediaTypeValidators) {
+    super(mediaTypeValidators);
+  }
+
+  @Override
+  public List<OasDiffViolation> validate(OasDiffValidationContext context, OasObjectPropertyLocation leftLocation,
+    Parameter leftOasObject, OasObjectPropertyLocation rightLocation, Parameter rightOasObject) {
+
+    enterParameter(context);
+
+    List<OasDiffViolation> violations = super
+      .validate(context, leftLocation, leftOasObject, rightLocation, rightOasObject);
+
+    leaveParameter(context);
+    return violations;
+  }
+
+  @Override
+  protected Map<String, MediaType> getMapProperty(Parameter oasObject) {
+    return oasObject.getContent();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "content";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return MEDIA_TYPE;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/parameter/ParameterSchemaDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/parameter/ParameterSchemaDiffValidator.java
new file mode 100755
index 0000000..a8feb6c
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/parameter/ParameterSchemaDiffValidator.java
@@ -0,0 +1,67 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.media.Schema;
+import io.swagger.v3.oas.models.parameters.Parameter;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.SCHEMA;
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.*;
+
+public class ParameterSchemaDiffValidator
+  extends ObjectPropertyDiffValidator<Parameter, Schema>
+  implements ParameterDiffValidator {
+
+  public ParameterSchemaDiffValidator(List<SchemaDiffValidator> schemaDiffValidators) {
+    super(schemaDiffValidators);
+  }
+
+  @Override
+  public List<OasDiffViolation> validate(OasDiffValidationContext context, OasObjectPropertyLocation leftLocation,
+    Parameter leftOasObject, OasObjectPropertyLocation rightLocation, Parameter rightOasObject) {
+
+    enterParameter(context);
+
+    List<OasDiffViolation> violations = super
+      .validate(context, leftLocation, leftOasObject, rightLocation, rightOasObject);
+
+    leaveParameter(context);
+    return violations;
+  }
+
+  @Override
+  protected Schema getPropertyObject(Parameter oasObject) {
+    return oasObject.getSchema();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "schema";
+  }
+
+  @Override
+  protected OasObjectType getPropertyType() {
+    return SCHEMA;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/pathitem/PathItemOperationsDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/pathitem/PathItemOperationsDiffValidator.java
new file mode 100755
index 0000000..9b47f2a
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/pathitem/PathItemOperationsDiffValidator.java
@@ -0,0 +1,118 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.pathitem;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils;
+import io.swagger.v3.oas.models.Operation;
+import io.swagger.v3.oas.models.PathItem;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.OPERATION;
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasObjectDiffValidatorUtils.doDiffValidateProperty;
+
+public class PathItemOperationsDiffValidator
+  extends OasObjectDiffValidatorTemplate<PathItem>
+  implements PathItemDiffValidator {
+
+  private final List<OperationDiffValidator> operationValidators;
+
+  public PathItemOperationsDiffValidator(List<OperationDiffValidator> operationValidators) {
+    this.operationValidators = operationValidators;
+  }
+
+  @Override
+  public List<OasDiffViolation> validateCompare(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, PathItem leftOasObject,
+    OasObjectPropertyLocation rightLocation, PathItem rightOasObject) {
+
+    Map<PathItem.HttpMethod, Operation> leftOperationMap = leftOasObject.readOperationsMap();
+    Map<PathItem.HttpMethod, Operation> rightOperationMap = rightOasObject.readOperationsMap();
+
+    List<OasDiffViolation> violations = new ArrayList<>();
+
+    for (Map.Entry<PathItem.HttpMethod, Operation> entry : leftOperationMap.entrySet()) {
+      PathItem.HttpMethod leftMethod = entry.getKey();
+      Operation leftOperation = entry.getValue();
+      OasObjectPropertyLocation leftOperationLoc = leftLocation
+        .property(leftMethod.toString().toLowerCase(), OPERATION);
+
+      Operation rightOperation = rightOperationMap.get(leftMethod);
+      if (rightOperation == null) {
+
+        violations.addAll(
+          doDiffValidateProperty(
+            context,
+            leftOperationLoc,
+            leftOperation,
+            null,
+            null,
+            operationValidators
+          )
+        );
+
+      } else {
+
+        OasObjectPropertyLocation rightOperationLoc = rightLocation
+          .property(leftMethod.toString().toLowerCase(), OPERATION);
+        violations.addAll(
+          doDiffValidateProperty(
+            context,
+            leftOperationLoc,
+            leftOperation,
+            rightOperationLoc,
+            rightOperation,
+            operationValidators
+          )
+        );
+
+      }
+
+    }
+
+    for (Map.Entry<PathItem.HttpMethod, Operation> entry : rightOperationMap.entrySet()) {
+      PathItem.HttpMethod rightMethod = entry.getKey();
+      if (leftOperationMap.containsKey(rightMethod)) {
+        continue;
+      }
+      Operation rightOperation = rightOperationMap.get(rightMethod);
+      OasObjectPropertyLocation rightOperationLoc = rightLocation
+        .property(rightMethod.toString().toLowerCase(), OPERATION);
+
+      violations.addAll(
+        doDiffValidateProperty(
+          context,
+          null,
+          null,
+          rightOperationLoc,
+          rightOperation,
+          operationValidators
+        )
+      );
+
+    }
+
+    return violations;
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/pathitem/PathItemParametersDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/pathitem/PathItemParametersDiffValidator.java
new file mode 100755
index 0000000..92e4741
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/pathitem/PathItemParametersDiffValidator.java
@@ -0,0 +1,58 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.pathitem;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ListPropertyDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.ParameterDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.PathItemDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.PathItem;
+import io.swagger.v3.oas.models.parameters.Parameter;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.PARAMETER;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#pathItemObject">Path Item Object</a>
+ * .parameters (List of <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#parameterObject">Parameter Object</a>)的校验器
+ */
+public class PathItemParametersDiffValidator
+  extends ListPropertyDiffValidator<PathItem, Parameter>
+  implements PathItemDiffValidator {
+
+  public PathItemParametersDiffValidator(List<ParameterDiffValidator> parameterValidators) {
+    super(parameterValidators, parameter -> "in:" + parameter.getIn() + "/name:" + parameter.getName());
+  }
+
+  @Override
+  protected List<Parameter> getListProperty(PathItem oasObject) {
+    return oasObject.getParameters();
+  }
+
+  @Override
+  protected String getListPropertyName() {
+    return "parameters";
+  }
+
+  @Override
+  protected OasObjectType getElementType() {
+    return PARAMETER;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/paths/PathsPathItemsDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/paths/PathsPathItemsDiffValidator.java
new file mode 100755
index 0000000..0538928
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/paths/PathsPathItemsDiffValidator.java
@@ -0,0 +1,77 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.paths;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import io.swagger.v3.oas.models.PathItem;
+import io.swagger.v3.oas.models.Paths;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasObjectDiffValidatorUtils.doDiffValidateProperty;
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.PATH_ITEM;
+
+public class PathsPathItemsDiffValidator
+  extends OasObjectDiffValidatorTemplate<Paths>
+  implements PathsDiffValidator {
+
+  private final List<PathItemDiffValidator> pathItemValidators;
+
+  public PathsPathItemsDiffValidator(List<PathItemDiffValidator> pathItemValidators) {
+    this.pathItemValidators = pathItemValidators;
+  }
+
+  @Override
+  public List<OasDiffViolation> validateCompare(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, Paths leftOasObject,
+    OasObjectPropertyLocation rightLocation, Paths rightOasObject) {
+
+    List<OasDiffViolation> violations = new ArrayList<>();
+
+    for (Map.Entry<String, PathItem> entry : leftOasObject.entrySet()) {
+      String lPath = entry.getKey();
+      PathItem lPathItem = entry.getValue();
+      OasObjectPropertyLocation lPathItemLoc = leftLocation.property(lPath, PATH_ITEM);
+
+      PathItem rPathItem = rightOasObject.get(lPath);
+      if (rPathItem == null) {
+        violations.addAll(doDiffValidateProperty(context, lPathItemLoc, lPathItem, null, null, pathItemValidators));
+      } else {
+        OasObjectPropertyLocation rPathItemLoc = rightLocation.property(lPath, PATH_ITEM);
+        violations.addAll(
+          doDiffValidateProperty(context, lPathItemLoc, lPathItem, rPathItemLoc, rPathItem, pathItemValidators));
+      }
+
+    }
+
+    for (Map.Entry<String, PathItem> entry : rightOasObject.entrySet()) {
+      String rPath = entry.getKey();
+      if (leftOasObject.containsKey(rPath)) {
+        continue;
+      }
+      PathItem rPathItem = entry.getValue();
+      OasObjectPropertyLocation rPathItemLoc = leftLocation.property(rPath, PATH_ITEM);
+      violations.addAll(doDiffValidateProperty(context, null, null, rPathItemLoc, rPathItem, pathItemValidators));
+    }
+    return violations;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/requestbody/RequestBodyContentDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/requestbody/RequestBodyContentDiffValidator.java
new file mode 100755
index 0000000..487f276
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/requestbody/RequestBodyContentDiffValidator.java
@@ -0,0 +1,68 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.requestbody;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.media.MediaType;
+import io.swagger.v3.oas.models.parameters.RequestBody;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.MEDIA_TYPE;
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.*;
+
+public class RequestBodyContentDiffValidator
+  extends MapPropertyDiffValidator<RequestBody, MediaType>
+  implements RequestBodyDiffValidator {
+
+  public RequestBodyContentDiffValidator(List<MediaTypeDiffValidator> mediaTypeValidators) {
+    super(mediaTypeValidators);
+  }
+
+  @Override
+  public List<OasDiffViolation> validate(OasDiffValidationContext context, OasObjectPropertyLocation leftLocation,
+    RequestBody leftOasObject, OasObjectPropertyLocation rightLocation, RequestBody rightOasObject) {
+
+    enterRequestBody(context);
+
+    List<OasDiffViolation> violations = super
+      .validate(context, leftLocation, leftOasObject, rightLocation, rightOasObject);
+
+    leaveRequestBody(context);
+    return violations;
+  }
+
+  @Override
+  protected Map<String, MediaType> getMapProperty(RequestBody oasObject) {
+    return oasObject.getContent();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "content";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return MEDIA_TYPE;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/response/ResponseContentDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/response/ResponseContentDiffValidator.java
new file mode 100755
index 0000000..0787869
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/response/ResponseContentDiffValidator.java
@@ -0,0 +1,68 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.response;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.media.MediaType;
+import io.swagger.v3.oas.models.responses.ApiResponse;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.MEDIA_TYPE;
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.*;
+
+public class ResponseContentDiffValidator
+  extends MapPropertyDiffValidator<ApiResponse, MediaType>
+  implements ResponseDiffValidator {
+
+  public ResponseContentDiffValidator(List<MediaTypeDiffValidator> mediaTypeValidators) {
+    super(mediaTypeValidators);
+  }
+
+  @Override
+  public List<OasDiffViolation> validate(OasDiffValidationContext context, OasObjectPropertyLocation leftLocation,
+    ApiResponse leftOasObject, OasObjectPropertyLocation rightLocation, ApiResponse rightOasObject) {
+
+    enterResponse(context);
+
+    List<OasDiffViolation> violations = super
+      .validate(context, leftLocation, leftOasObject, rightLocation, rightOasObject);
+
+    leaveResponse(context);
+    return violations;
+  }
+
+  @Override
+  protected Map<String, MediaType> getMapProperty(ApiResponse oasObject) {
+    return oasObject.getContent();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "content";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return MEDIA_TYPE;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/response/ResponseHeadersDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/response/ResponseHeadersDiffValidator.java
new file mode 100755
index 0000000..fcc4b9b
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/response/ResponseHeadersDiffValidator.java
@@ -0,0 +1,69 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.response;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import io.swagger.v3.oas.models.headers.Header;
+import io.swagger.v3.oas.models.responses.ApiResponse;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.HEADER;
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.enterResponse;
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasDiffValidationContextUtils.leaveResponse;
+
+public class ResponseHeadersDiffValidator
+  extends MapPropertyDiffValidator<ApiResponse, Header>
+  implements ResponseDiffValidator {
+
+  public ResponseHeadersDiffValidator(List<HeaderDiffValidator> valueValidators) {
+    super(valueValidators);
+  }
+
+  @Override
+  public List<OasDiffViolation> validate(OasDiffValidationContext context, OasObjectPropertyLocation leftLocation,
+    ApiResponse leftOasObject, OasObjectPropertyLocation rightLocation, ApiResponse rightOasObject) {
+
+    enterResponse(context);
+
+    List<OasDiffViolation> violations = super
+      .validate(context, leftLocation, leftOasObject, rightLocation, rightOasObject);
+
+    leaveResponse(context);
+    return violations;
+  }
+
+  @Override
+  protected Map<String, Header> getMapProperty(ApiResponse components) {
+    return components.getHeaders();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "headers";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return HEADER;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/responses/ResponsesResponsesDiffValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/responses/ResponsesResponsesDiffValidator.java
new file mode 100755
index 0000000..e5f5fed
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/responses/ResponsesResponsesDiffValidator.java
@@ -0,0 +1,102 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.responses;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.responses.ApiResponse;
+import io.swagger.v3.oas.models.responses.ApiResponses;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasObjectDiffValidatorUtils.doDiffValidateProperty;
+
+public class ResponsesResponsesDiffValidator
+  extends OasObjectDiffValidatorTemplate<ApiResponses>
+  implements ResponsesDiffValidator {
+
+  private final List<ResponseDiffValidator> responseValidators;
+
+  public ResponsesResponsesDiffValidator(List<ResponseDiffValidator> responseValidators) {
+    this.responseValidators = responseValidators;
+  }
+
+  @Override
+  public List<OasDiffViolation> validateCompare(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, ApiResponses leftOasObject,
+    OasObjectPropertyLocation rightLocation, ApiResponses rightOasObject) {
+
+    List<OasDiffViolation> violations = new ArrayList<>();
+
+    for (Map.Entry<String, ApiResponse> entry : leftOasObject.entrySet()) {
+      String leftStatus = entry.getKey();
+      ApiResponse leftResponse = entry.getValue();
+      OasObjectPropertyLocation leftResponseLoc = leftLocation.property(leftStatus, OasObjectType.RESPONSE);
+
+      ApiResponse rightResponse = rightOasObject.get(leftStatus);
+      if (rightResponse == null) {
+        violations.addAll(
+          doDiffValidateProperty(
+            context,
+            leftResponseLoc,
+            leftResponse,
+            null,
+            null,
+            responseValidators
+          )
+        );
+      } else {
+        OasObjectPropertyLocation rightResponseLoc = rightLocation.property(leftStatus, OasObjectType.RESPONSE);
+        violations.addAll(
+          doDiffValidateProperty(
+            context,
+            leftResponseLoc,
+            leftResponse,
+            rightResponseLoc,
+            rightResponse,
+            responseValidators
+          )
+        );
+      }
+    }
+
+    for (Map.Entry<String, ApiResponse> entry : rightOasObject.entrySet()) {
+      String rightStatus = entry.getKey();
+      if (leftOasObject.containsKey(rightStatus)) {
+        continue;
+      }
+      ApiResponse rightResponse = entry.getValue();
+      OasObjectPropertyLocation rightResponseLoc = rightLocation.property(rightStatus, OasObjectType.RESPONSE);
+      violations.addAll(
+        doDiffValidateProperty(
+          context,
+          null,
+          null,
+          rightResponseLoc,
+          rightResponse,
+          responseValidators
+        )
+      );
+    }
+    return violations;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/schema/SchemaDiffValidatorEngine.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/schema/SchemaDiffValidatorEngine.java
new file mode 100755
index 0000000..0f20af2
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/skeleton/schema/SchemaDiffValidatorEngine.java
@@ -0,0 +1,222 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.skeleton.schema;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.*;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import io.swagger.v3.oas.models.media.ArraySchema;
+import io.swagger.v3.oas.models.media.ComposedSchema;
+import io.swagger.v3.oas.models.media.Schema;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.diffvalidation.util.OasObjectDiffValidatorUtils.*;
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.SCHEMA;
+import static java.util.Collections.singletonList;
+import static java.util.stream.Collectors.toList;
+
+/**
+ * 递归校验
+ */
+public class SchemaDiffValidatorEngine
+  extends OasObjectDiffValidatorTemplate<Schema>
+  implements SchemaDiffValidator {
+
+  private final List<SchemaAddValidator> schemaAddValidators;
+  private final List<SchemaDelValidator> schemaDelValidators;
+  private final List<SchemaCompareValidator> schemaCompareValidators;
+
+  public SchemaDiffValidatorEngine(
+    List<SchemaAddValidator> schemaAddValidators,
+    List<SchemaDelValidator> schemaDelValidators,
+    List<SchemaCompareValidator> schemaCompareValidators) {
+    this.schemaAddValidators = new ArrayList<>(schemaAddValidators);
+    this.schemaDelValidators = new ArrayList<>(schemaDelValidators);
+    this.schemaCompareValidators = new ArrayList<>(schemaCompareValidators);
+  }
+
+  @Override
+  protected List<OasDiffViolation> validateAdd(OasDiffValidationContext context, OasObjectPropertyLocation rightLocation,
+    Schema rightOasObject) {
+
+    return schemaAddValidators
+      .stream()
+      .map(v -> v.validate(context, rightLocation, rightOasObject))
+      .flatMap(list -> list.stream())
+      .collect(toList());
+
+  }
+
+  @Override
+  protected List<OasDiffViolation> validateDel(OasDiffValidationContext context, OasObjectPropertyLocation leftLocation,
+    Schema leftOasObject) {
+
+    return schemaDelValidators
+      .stream()
+      .map(v -> v.validate(context, leftLocation, leftOasObject))
+      .flatMap(list -> list.stream())
+      .collect(toList());
+
+  }
+
+  @Override
+  protected List<OasDiffViolation> validateCompare(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, Schema leftOasObject,
+    OasObjectPropertyLocation rightLocation, Schema rightOasObject) {
+
+    List<OasDiffViolation> violations = new ArrayList<>();
+    violations.addAll(
+      schemaCompareValidators
+        .stream()
+        .map(v -> v.validate(context, leftLocation, leftOasObject, rightLocation, rightOasObject))
+        .flatMap(list -> list.stream())
+        .collect(toList())
+    );
+
+    violations.addAll(
+      validateCompareOrdinary(context, leftLocation, leftOasObject, rightLocation, rightOasObject)
+    );
+    violations.addAll(
+      validateCompareArray(context, leftLocation, leftOasObject, rightLocation, rightOasObject)
+    );
+    violations.addAll(
+      validateCompareComposed(context, leftLocation, leftOasObject, rightLocation, rightOasObject)
+    );
+    return violations;
+
+  }
+
+  private List<OasDiffViolation> validateCompareOrdinary(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, Schema leftOasObject,
+    OasObjectPropertyLocation rightLocation, Schema rightOasObject) {
+
+    return doDiffValidateMapProperty(
+      context,
+      "properties",
+      leftLocation,
+      leftOasObject.getProperties(),
+      rightLocation,
+      rightOasObject.getProperties(),
+      SCHEMA,
+      singletonList(this)
+    );
+
+  }
+
+  private List<OasDiffViolation> validateCompareArray(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, Schema leftOasObject,
+    OasObjectPropertyLocation rightLocation, Schema rightOasObject) {
+
+    Schema leftItems = null;
+    OasObjectPropertyLocation leftItemsLocation = null;
+    if (leftOasObject instanceof ArraySchema) {
+      leftItems = ((ArraySchema) leftOasObject).getItems();
+      leftItemsLocation = leftLocation.property("items", SCHEMA);
+    }
+
+    Schema<?> rightItems = null;
+    OasObjectPropertyLocation rightItemsLocation = null;
+    if (rightOasObject instanceof ArraySchema) {
+      rightItems = ((ArraySchema) rightOasObject).getItems();
+      rightItemsLocation = rightLocation.property("items", SCHEMA);
+    }
+
+    return doDiffValidateProperty(
+      context,
+      leftItemsLocation,
+      leftItems,
+      rightItemsLocation,
+      rightItems,
+      singletonList(this)
+    );
+
+  }
+
+  private List<OasDiffViolation> validateCompareComposed(OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation, Schema leftOasObject,
+    OasObjectPropertyLocation rightLocation, Schema rightOasObject) {
+
+    List<OasDiffViolation> violations = new ArrayList<>();
+
+    List<Schema> leftAllOf = null;
+    List<Schema> leftOneOf = null;
+    List<Schema> leftAnyOf = null;
+
+    if (leftOasObject instanceof ComposedSchema) {
+      leftAllOf = ((ComposedSchema) leftOasObject).getAllOf();
+      leftOneOf = ((ComposedSchema) leftOasObject).getOneOf();
+      leftAnyOf = ((ComposedSchema) leftOasObject).getAnyOf();
+    }
+
+    List<Schema> rightAllOf = null;
+    List<Schema> rightOneOf = null;
+    List<Schema> rightAnyOf = null;
+
+    if (rightOasObject instanceof ComposedSchema) {
+      rightAllOf = ((ComposedSchema) rightOasObject).getAllOf();
+      rightOneOf = ((ComposedSchema) rightOasObject).getOneOf();
+      rightAnyOf = ((ComposedSchema) rightOasObject).getAnyOf();
+    }
+
+    violations.addAll(
+      doDiffValidateListProperty(
+        context,
+        "allOf",
+        leftLocation,
+        leftAllOf,
+        rightLocation,
+        rightAllOf,
+        SCHEMA,
+        schema -> System.identityHashCode(schema),
+        singletonList(this)
+      )
+    );
+
+    violations.addAll(
+      doDiffValidateListProperty(
+        context,
+        "oneOf",
+        leftLocation,
+        leftOneOf,
+        rightLocation,
+        rightOneOf,
+        SCHEMA,
+        schema -> System.identityHashCode(schema),
+        singletonList(this)
+      )
+    );
+
+    violations.addAll(
+      doDiffValidateListProperty(
+        context,
+        "anyOf",
+        leftLocation,
+        leftAnyOf,
+        rightLocation,
+        rightAnyOf,
+        SCHEMA,
+        schema -> System.identityHashCode(schema),
+        singletonList(this)
+      )
+    );
+
+    return violations;
+
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/util/ChangeRangeCheckUtils.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/util/ChangeRangeCheckUtils.java
new file mode 100755
index 0000000..b26b36a
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/util/ChangeRangeCheckUtils.java
@@ -0,0 +1,38 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.util;
+
+import java.util.List;
+import java.util.Objects;
+
+public class ChangeRangeCheckUtils {
+
+  public static boolean isNotViolated(Object left, Object right, List<Object[]> allowedList) {
+
+    if (Objects.equals(left, right)) {
+      return true;
+    }
+    for (Object[] objects : allowedList) {
+      if (Objects.equals(objects[0], left) && Objects.equals(objects[1], right)) {
+        return true;
+      }
+    }
+    return false;
+
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/util/OasDiffValidationContextUtils.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/util/OasDiffValidationContextUtils.java
new file mode 100755
index 0000000..2fc5ae9
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/util/OasDiffValidationContextUtils.java
@@ -0,0 +1,64 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.util;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+
+public class OasDiffValidationContextUtils {
+
+  private static final String IN_REQUEST_BODY = OasDiffValidationContextUtils.class.getName() + ".IN_REQUEST_BODY";
+  private static final String IN_PARAMETER = OasDiffValidationContextUtils.class.getName() + ".IN_PARAMETER";
+  private static final String IN_RESPONSE = OasDiffValidationContextUtils.class.getName() + ".IN_RESPONSE";
+
+  public static void enterRequestBody(OasDiffValidationContext context) {
+    context.setAttribute(IN_REQUEST_BODY, true);
+  }
+
+  public static void leaveRequestBody(OasDiffValidationContext context) {
+    context.removeAttribute(IN_REQUEST_BODY);
+  }
+
+  public static void enterResponse(OasDiffValidationContext context) {
+    context.setAttribute(IN_RESPONSE, true);
+  }
+
+  public static void leaveResponse(OasDiffValidationContext context) {
+    context.removeAttribute(IN_RESPONSE);
+  }
+
+  public static void enterParameter(OasDiffValidationContext context) {
+    context.setAttribute(IN_PARAMETER, true);
+  }
+
+  public static void leaveParameter(OasDiffValidationContext context) {
+    context.removeAttribute(IN_PARAMETER);
+  }
+
+  public static boolean isInRequestBody(OasDiffValidationContext context) {
+    return Boolean.TRUE.equals(context.getAttribute(IN_REQUEST_BODY));
+  }
+
+  public static boolean isInResponse(OasDiffValidationContext context) {
+    return Boolean.TRUE.equals(context.getAttribute(IN_RESPONSE));
+  }
+
+  public static boolean isInParameter(OasDiffValidationContext context) {
+    return Boolean.TRUE.equals(context.getAttribute(IN_PARAMETER));
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/util/OasObjectDiffValidatorUtils.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/util/OasObjectDiffValidatorUtils.java
new file mode 100755
index 0000000..5e0f5cc
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/util/OasObjectDiffValidatorUtils.java
@@ -0,0 +1,264 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.util;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationException;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasObjectDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.function.Function;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.emptyMap;
+
+public abstract class OasObjectDiffValidatorUtils {
+
+  private OasObjectDiffValidatorUtils() {
+    // singleton
+  }
+
+  /**
+   * assert 参数null合规
+   *
+   * @param leftLocation
+   * @param leftOasObject
+   * @param rightLocation
+   * @param rightOasObject
+   * @param <T>
+   */
+  public static <T> void assertNullGood(
+    OasObjectPropertyLocation leftLocation, T leftOasObject,
+    OasObjectPropertyLocation rightLocation, T rightOasObject) {
+
+    assertNullConsistent(leftLocation, leftOasObject, rightLocation, rightOasObject);
+
+    if (leftOasObject == null && rightOasObject == null) {
+      throw new OasDiffValidationException("leftLocation, leftOasObject, rightLocation, rightOasObject are all null");
+    }
+  }
+
+  /**
+   * @param context
+   * @param leftLocation
+   * @param leftOasObject  null-safe
+   * @param rightLocation
+   * @param rightOasObject null-safe
+   * @param validators
+   * @param <T>
+   * @return
+   */
+  public static <T> List<OasDiffViolation> doDiffValidateProperty(
+    OasDiffValidationContext context,
+    OasObjectPropertyLocation leftLocation,
+    T leftOasObject,
+    OasObjectPropertyLocation rightLocation,
+    T rightOasObject,
+    List<? extends OasObjectDiffValidator<T>> validators) {
+
+    assertNullConsistent(leftLocation, leftOasObject, rightLocation, rightOasObject);
+
+    if (leftLocation == null && rightLocation == null) {
+      return emptyList();
+    }
+
+    List<OasDiffViolation> violations = new ArrayList<>();
+    for (OasObjectDiffValidator validator : validators) {
+      violations.addAll(validator.validate(context, leftLocation, leftOasObject, rightLocation, rightOasObject));
+    }
+    return violations;
+  }
+
+  /**
+   * @param context
+   * @param listPropertyName
+   * @param leftOwnerLocation
+   * @param leftListProperty   null-safe
+   * @param rightOwnerLocation
+   * @param rightListProperty  null-safe
+   * @param elementType
+   * @param elementKeyMapper
+   * @param validators
+   * @param <T>
+   * @return
+   */
+  public static <T> List<OasDiffViolation> doDiffValidateListProperty(
+    OasDiffValidationContext context,
+    String listPropertyName,
+    OasObjectPropertyLocation leftOwnerLocation,
+    List<T> leftListProperty,
+    OasObjectPropertyLocation rightOwnerLocation,
+    List<T> rightListProperty,
+    OasObjectType elementType,
+    Function<T, ?> elementKeyMapper,
+    List<? extends OasObjectDiffValidator<T>> validators) {
+
+    assertOwnerLocationNotNull(leftOwnerLocation, rightOwnerLocation);
+
+    if (leftListProperty == null) {
+      leftListProperty = emptyList();
+    }
+
+    if (rightListProperty == null) {
+      rightListProperty = emptyList();
+    }
+
+    List<OasDiffViolation> violations = new ArrayList<>();
+
+    for (int i = 0; i < leftListProperty.size(); i++) {
+      T leftElement = leftListProperty.get(i);
+      Object leftElementKey = elementKeyMapper.apply(leftElement);
+      OasObjectPropertyLocation leftElementLoc =
+        leftOwnerLocation.property(listPropertyName + "[" + i + "]", elementType);
+
+      int rightElementIndex = indexOf(rightListProperty, leftElementKey, elementKeyMapper);
+      if (rightElementIndex == -1) {
+        violations.addAll(doDiffValidateProperty(context, leftElementLoc, leftElement, null, null, validators));
+      } else {
+        T rightElement = rightListProperty.get(rightElementIndex);
+        OasObjectPropertyLocation rightElementLoc =
+          rightOwnerLocation.property(listPropertyName + "[" + rightElementIndex + "]", elementType);
+        violations.addAll(
+          doDiffValidateProperty(context, leftElementLoc, leftElement, rightElementLoc, rightElement, validators));
+      }
+    }
+
+    for (int i = 0; i < rightListProperty.size(); i++) {
+      T rightElement = rightListProperty.get(i);
+      Object rightElementKey = elementKeyMapper.apply(rightElement);
+      OasObjectPropertyLocation rightElementLoc =
+        rightOwnerLocation.property(listPropertyName + "[" + i + "]", elementType);
+
+      int leftElementIndex = indexOf(leftListProperty, rightElementKey, elementKeyMapper);
+      if (leftElementIndex != -1) {
+        continue;
+      }
+      violations.addAll(doDiffValidateProperty(context, null, null, rightElementLoc, rightElement, validators));
+
+    }
+    return violations;
+
+  }
+
+  private static <T> int indexOf(List<T> elementList, Object searchKey, Function<T, ?> elementKeyMapper) {
+    for (int i = 0; i < elementList.size(); i++) {
+      T element = elementList.get(i);
+      if (elementKeyMapper.apply(element).equals(searchKey)) {
+        return i;
+      }
+
+    }
+    return -1;
+  }
+
+  /**
+   * @param context
+   * @param mapPropertyName
+   * @param leftOwnerLocation
+   * @param leftMapProperty    null-safe
+   * @param rightOwnerLocation
+   * @param rightMapProperty   null-safe
+   * @param valueType
+   * @param validators
+   * @param <T>
+   * @return
+   */
+  public static <T> List<OasDiffViolation> doDiffValidateMapProperty(
+    OasDiffValidationContext context,
+    String mapPropertyName,
+    OasObjectPropertyLocation leftOwnerLocation,
+    Map<String, T> leftMapProperty,
+    OasObjectPropertyLocation rightOwnerLocation,
+    Map<String, T> rightMapProperty,
+    OasObjectType valueType,
+    List<? extends OasObjectDiffValidator<T>> validators
+  ) {
+
+    assertOwnerLocationNotNull(leftOwnerLocation, rightOwnerLocation);
+
+    if (leftMapProperty == null) {
+      leftMapProperty = emptyMap();
+    }
+    if (rightMapProperty == null) {
+      rightMapProperty = emptyMap();
+    }
+
+    List<OasDiffViolation> violations = new ArrayList<>();
+
+    for (Map.Entry<String, T> entry : leftMapProperty.entrySet()) {
+      String leftKey = entry.getKey();
+      T leftValue = entry.getValue();
+
+      String keyName = mapPropertyName + ".'" + leftKey + "'";
+      OasObjectPropertyLocation leftValueLoc = leftOwnerLocation.property(keyName, valueType);
+
+      T rightValue = rightMapProperty.get(leftKey);
+      if (rightValue == null) {
+        violations.addAll(doDiffValidateProperty(context, leftValueLoc, leftValue, null, null, validators));
+      } else {
+        OasObjectPropertyLocation rightValueLoc = rightOwnerLocation.property(keyName, valueType);
+        violations
+          .addAll(doDiffValidateProperty(context, leftValueLoc, leftValue, rightValueLoc, rightValue, validators));
+      }
+
+    }
+
+    for (Map.Entry<String, T> entry : rightMapProperty.entrySet()) {
+      String rightKey = entry.getKey();
+      if (leftMapProperty.containsKey(rightKey)) {
+        continue;
+      }
+
+      T rightValue = entry.getValue();
+      String keyName = mapPropertyName + ".'" + rightKey + "'";
+      OasObjectPropertyLocation rightLoc = rightOwnerLocation.property(keyName, valueType);
+      violations.addAll(doDiffValidateProperty(context, null, null, rightLoc, rightValue, validators));
+
+    }
+    return violations;
+  }
+
+
+  private static void assertOwnerLocationNotNull(
+    OasObjectPropertyLocation leftOwnerLocation,
+    OasObjectPropertyLocation rightOwnerLocation) {
+    if (leftOwnerLocation == null) {
+      throw new OasDiffValidationException("leftOwnerLocation is null");
+    }
+    if (rightOwnerLocation == null) {
+      throw new OasDiffValidationException("rightOwnerLocation is null");
+    }
+  }
+
+  private static <T> void assertNullConsistent(
+    OasObjectPropertyLocation leftLocation, T leftOasObject,
+    OasObjectPropertyLocation rightLocation, T rightOasObject) {
+
+    if (leftLocation == null ^ leftOasObject == null) {
+      throw new OasDiffValidationException("leftLocation, leftOasObject should be both null or not");
+    }
+    if (rightLocation == null ^ rightOasObject == null) {
+      throw new OasDiffValidationException("rightLocation, rightOasObject should be both null or not");
+    }
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/util/ParameterUtils.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/util/ParameterUtils.java
new file mode 100755
index 0000000..f4fd792
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/util/ParameterUtils.java
@@ -0,0 +1,33 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.util;
+
+import io.swagger.v3.oas.models.parameters.Parameter;
+
+public abstract class ParameterUtils {
+
+  public static String getKeyString(Parameter parameter) {
+    return new StringBuilder()
+      .append("[name=")
+      .append(parameter.getName())
+      .append(",in=")
+      .append(parameter.getIn())
+      .append("]")
+      .toString();
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/util/DefaultOasSpecSyntaxChecker.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/util/DefaultOasSpecSyntaxChecker.java
new file mode 100755
index 0000000..cd1de49
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/util/DefaultOasSpecSyntaxChecker.java
@@ -0,0 +1,42 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.util;
+
+import io.swagger.v3.parser.core.models.ParseOptions;
+import io.swagger.v3.parser.core.models.SwaggerParseResult;
+
+import java.util.List;
+
+import static java.util.Collections.emptyList;
+
+public class DefaultOasSpecSyntaxChecker implements OasSpecSyntaxChecker {
+
+  @Override
+  public List<String> check(String oasSpecContent) {
+
+    ParseOptions parseOptions = new ParseOptions();
+    parseOptions.setResolve(false);
+    parseOptions.setResolveFully(false);
+    parseOptions.setResolveCombinators(false);
+    parseOptions.setFlatten(false);
+    SwaggerParseResult result = OasSpecParser.parse(oasSpecContent, parseOptions);
+    return result.getMessages() == null ? emptyList() : result.getMessages();
+
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/util/OasSpecParseException.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/util/OasSpecParseException.java
new file mode 100755
index 0000000..a263968
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/util/OasSpecParseException.java
@@ -0,0 +1,39 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.util;
+
+public class OasSpecParseException extends RuntimeException {
+  public OasSpecParseException() {
+  }
+
+  public OasSpecParseException(String message) {
+    super(message);
+  }
+
+  public OasSpecParseException(String message, Throwable cause) {
+    super(message, cause);
+  }
+
+  public OasSpecParseException(Throwable cause) {
+    super(cause);
+  }
+
+  public OasSpecParseException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace) {
+    super(message, cause, enableSuppression, writableStackTrace);
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/util/OasSpecParser.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/util/OasSpecParser.java
new file mode 100755
index 0000000..03ecccc
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/util/OasSpecParser.java
@@ -0,0 +1,36 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.util;
+
+import io.swagger.v3.parser.OpenAPIV3Parser;
+import io.swagger.v3.parser.core.models.ParseOptions;
+import io.swagger.v3.parser.core.models.SwaggerParseResult;
+
+public abstract class OasSpecParser {
+
+  private OasSpecParser() {
+    // singleton
+  }
+
+  public static SwaggerParseResult parse(String oasSpecContent, ParseOptions parseOptions) {
+    OpenAPIV3Parser parser = new OpenAPIV3Parser();
+    SwaggerParseResult swaggerParseResult = parser.readContents(oasSpecContent, null, parseOptions);
+    return swaggerParseResult;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/util/OasSpecSyntaxChecker.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/util/OasSpecSyntaxChecker.java
new file mode 100755
index 0000000..7b07281
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/util/OasSpecSyntaxChecker.java
@@ -0,0 +1,36 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.util;
+
+import java.util.List;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#openapi-specification">OAS Spec</a>的语法检查器。
+ * 只检查属性名是否正确
+ */
+public interface OasSpecSyntaxChecker {
+
+  /**
+   * 检查语法错误
+   *
+   * @param oasSpecContent
+   * @return 语法错误消息,如果是empty,则代表没有语法错误
+   */
+  List<String> check(String oasSpecContent);
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/util/StringCaseUtils.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/util/StringCaseUtils.java
new file mode 100755
index 0000000..ac9bc39
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/util/StringCaseUtils.java
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.util;
+
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.regex.Pattern;
+
+public abstract class StringCaseUtils {
+
+  private static final Pattern LOWER_CAMEL_CASE = Pattern.compile("^[a-z]+((\\d)|([A-Z0-9][a-z0-9]+))*([A-Z])?$");
+
+  private static final Pattern UPPER_CAMEL_CASE = Pattern.compile("^[A-Z]([a-z0-9]+[A-Z]?)*$");
+
+  private static final Pattern UPPER_HYPHEN_CASE = Pattern.compile("^([A-Z][a-z0-9]*-)*([A-Z][a-z0-9]*)$");
+
+  private StringCaseUtils() {
+    // singleton
+  }
+
+  public static boolean isLowerCamelCase(String string) {
+    if (StringUtils.isBlank(string)) {
+      return false;
+    }
+    return LOWER_CAMEL_CASE.matcher(string).matches();
+  }
+
+  public static boolean isUpperCamelCase(String string) {
+    if (StringUtils.isBlank(string)) {
+      return false;
+    }
+    return UPPER_CAMEL_CASE.matcher(string).matches();
+  }
+
+  public static boolean isUpperHyphenCase(String string) {
+    if (StringUtils.isBlank(string)) {
+      return false;
+    }
+    return UPPER_HYPHEN_CASE.matcher(string).matches();
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/CallbackValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/CallbackValidator.java
new file mode 100755
index 0000000..4b56a42
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/CallbackValidator.java
@@ -0,0 +1,26 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import io.swagger.v3.oas.models.callbacks.Callback;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#callbackObject">Callback Object</a>校验器
+ */
+public interface CallbackValidator extends OasObjectValidator<Callback> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ComponentsValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ComponentsValidator.java
new file mode 100755
index 0000000..980bff0
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ComponentsValidator.java
@@ -0,0 +1,26 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import io.swagger.v3.oas.models.Components;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#componentsObject">Components Object</a>校验器
+ */
+public interface ComponentsValidator extends OasObjectValidator<Components> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/DefaultOasSpecValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/DefaultOasSpecValidator.java
new file mode 100755
index 0000000..226f4e4
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/DefaultOasSpecValidator.java
@@ -0,0 +1,47 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import io.swagger.v3.oas.models.OpenAPI;
+
+import java.util.List;
+
+import static java.util.stream.Collectors.toList;
+
+public class DefaultOasSpecValidator implements OasSpecValidator {
+
+  private List<OpenApiValidator> openApiValidators;
+
+  public DefaultOasSpecValidator(List<OpenApiValidator> openApiValidators) {
+    this.openApiValidators = openApiValidators;
+  }
+
+  @Override
+  public List<OasViolation> validate(OasValidationContext context, OpenAPI openAPI) {
+
+    OasObjectPropertyLocation location = OasObjectPropertyLocation.root();
+
+    return openApiValidators
+      .stream()
+      .map(validator -> validator.validate(context, location, openAPI))
+      .flatMap(list -> list.stream())
+      .collect(toList());
+
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/EncodingValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/EncodingValidator.java
new file mode 100755
index 0000000..63b2d4d
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/EncodingValidator.java
@@ -0,0 +1,26 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import io.swagger.v3.oas.models.media.Encoding;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#encodingObject">Encoding Object</a>校验器
+ */
+public interface EncodingValidator extends OasObjectValidator<Encoding> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ExampleValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ExampleValidator.java
new file mode 100755
index 0000000..759e521
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ExampleValidator.java
@@ -0,0 +1,26 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import io.swagger.v3.oas.models.examples.Example;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#exampleObject">Example Object</a>校验器
+ */
+public interface ExampleValidator extends OasObjectValidator<Example> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/HeaderValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/HeaderValidator.java
new file mode 100755
index 0000000..8f5ecfb
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/HeaderValidator.java
@@ -0,0 +1,26 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import io.swagger.v3.oas.models.headers.Header;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#headerObject">Header Object</a>校验器
+ */
+public interface HeaderValidator extends OasObjectValidator<Header> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/InfoValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/InfoValidator.java
new file mode 100755
index 0000000..fe1e661
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/InfoValidator.java
@@ -0,0 +1,27 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import io.swagger.v3.oas.models.info.Info;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#infoObject">Info Object</a>校验器
+ */
+public interface InfoValidator extends OasObjectValidator<Info> {
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/LinkValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/LinkValidator.java
new file mode 100755
index 0000000..5eeb488
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/LinkValidator.java
@@ -0,0 +1,26 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import io.swagger.v3.oas.models.links.Link;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#link-object">Link Object</a>校验器
+ */
+public interface LinkValidator extends OasObjectValidator<Link> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ListPropertyRequiredValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ListPropertyRequiredValidator.java
new file mode 100755
index 0000000..30e5be7
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ListPropertyRequiredValidator.java
@@ -0,0 +1,56 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.commons.collections4.CollectionUtils;
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.List;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+public abstract class ListPropertyRequiredValidator<T, P> implements OasObjectValidator<T> {
+
+  @Override
+  final public List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location,
+    T oasObject) {
+
+    if (StringUtils.isNotBlank(get$ref(oasObject))) {
+      return emptyList();
+    }
+
+    List<P> listProperty = getListProperty(oasObject);
+    if (CollectionUtils.isEmpty(listProperty)) {
+      OasObjectPropertyLocation propertyLoc = location.property(getListPropertyName(), getElementType());
+      return singletonList(new OasViolation(propertyLoc, ViolationMessages.REQUIRED));
+    }
+    return emptyList();
+
+  }
+
+  protected abstract String get$ref(T oasObject);
+
+  protected abstract List<P> getListProperty(T oasObject);
+
+  protected abstract String getListPropertyName();
+
+  protected abstract OasObjectType getElementType();
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ListPropertyValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ListPropertyValidator.java
new file mode 100755
index 0000000..2348dfa
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ListPropertyValidator.java
@@ -0,0 +1,62 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.validation.util.OasObjectValidatorUtils.doValidateListProperty;
+import static java.util.Collections.emptyList;
+
+public abstract class ListPropertyValidator<T, P> implements OasObjectValidator<T> {
+
+  private final List<? extends OasObjectValidator<P>> valueValidators;
+
+  protected ListPropertyValidator(List<? extends OasObjectValidator<P>> valueValidators) {
+    this.valueValidators = valueValidators;
+  }
+
+  @Override
+  final public List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location,
+    T oasObject) {
+
+    if (StringUtils.isNotBlank(get$ref(oasObject))) {
+      return emptyList();
+    }
+
+    return doValidateListProperty(
+      context, location,
+      getListPropertyName(),
+      getListProperty(oasObject),
+      getElementType(),
+      valueValidators
+    );
+
+  }
+
+  protected abstract String get$ref(T oasObject);
+
+  protected abstract List<P> getListProperty(T oasObject);
+
+  protected abstract String getListPropertyName();
+
+  protected abstract OasObjectType getElementType();
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/MapPropertyKeysValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/MapPropertyKeysValidator.java
new file mode 100755
index 0000000..3f87dd5
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/MapPropertyKeysValidator.java
@@ -0,0 +1,67 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.List;
+import java.util.Map;
+import java.util.function.Function;
+import java.util.function.Predicate;
+
+import static org.apache.servicecomb.toolkit.oasv.validation.util.OasObjectValidatorUtils.doValidateMapPropertyKeys;
+import static java.util.Collections.emptyList;
+
+public abstract class MapPropertyKeysValidator<T> implements OasObjectValidator<T> {
+
+  private final Predicate<String> keyPredicate;
+
+  private final Function<String, String> errorFunction;
+
+  public MapPropertyKeysValidator(Predicate<String> keyPredicate,
+    Function<String, String> errorFunction) {
+    this.keyPredicate = keyPredicate;
+    this.errorFunction = errorFunction;
+  }
+
+  @Override
+  final public List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location,
+    T oasObject) {
+
+    if (StringUtils.isNotBlank(get$ref(oasObject))) {
+      return emptyList();
+    }
+
+    return doValidateMapPropertyKeys(
+      location,
+      getMapPropertyName(),
+      getMapProperty(oasObject),
+      keyPredicate,
+      errorFunction
+    );
+
+  }
+
+  protected abstract String get$ref(T oasObject);
+
+  protected abstract Map<String, ?> getMapProperty(T oasObject);
+
+  protected abstract String getMapPropertyName();
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/MapPropertyValuesValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/MapPropertyValuesValidator.java
new file mode 100755
index 0000000..4a30c12
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/MapPropertyValuesValidator.java
@@ -0,0 +1,63 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.validation.util.OasObjectValidatorUtils.doValidateMapPropertyValues;
+import static java.util.Collections.emptyList;
+
+public abstract class MapPropertyValuesValidator<T, P> implements OasObjectValidator<T> {
+
+  private final List<? extends OasObjectValidator<P>> valueValidators;
+
+  protected MapPropertyValuesValidator(List<? extends OasObjectValidator<P>> valueValidators) {
+    this.valueValidators = valueValidators;
+  }
+
+  @Override
+  public final List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location,
+    T oasObject) {
+
+    if (StringUtils.isNotBlank(get$ref(oasObject))) {
+      return emptyList();
+    }
+
+    return doValidateMapPropertyValues(
+      context, location,
+      getMapPropertyName(),
+      getMapProperty(oasObject),
+      getValueType(),
+      valueValidators
+    );
+
+  }
+
+  protected abstract String get$ref(T oasObject);
+
+  protected abstract Map<String, P> getMapProperty(T oasObject);
+
+  protected abstract String getMapPropertyName();
+
+  protected abstract OasObjectType getValueType();
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/MediaTypeValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/MediaTypeValidator.java
new file mode 100755
index 0000000..c24badf
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/MediaTypeValidator.java
@@ -0,0 +1,27 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import io.swagger.v3.oas.models.media.MediaType;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#media-type-object">Media Type Object</a>校验器
+ */
+public interface MediaTypeValidator extends OasObjectValidator<MediaType> {
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/OasObjectValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/OasObjectValidator.java
new file mode 100755
index 0000000..139fde2
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/OasObjectValidator.java
@@ -0,0 +1,38 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+
+import java.util.List;
+
+/**
+ *
+ * @param <T> <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#table-of-contents">OpenAPI Specification</a>所定义的对象
+ */
+public interface OasObjectValidator<T> {
+
+  /**
+   * @param context   校验上下文
+   * @param location  OpenAPI Object的位置
+   * @param oasObject OpenAPI Object
+   * @return 校验违例
+   */
+  List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location, T oasObject);
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/OasSpecValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/OasSpecValidator.java
new file mode 100755
index 0000000..8f59ce3
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/OasSpecValidator.java
@@ -0,0 +1,31 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import io.swagger.v3.oas.models.OpenAPI;
+
+import java.util.List;
+
+/**
+ * OAS Spec校验器
+ */
+public interface OasSpecValidator {
+
+  List<OasViolation> validate(OasValidationContext context, OpenAPI openAPI);
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/OasValidationContext.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/OasValidationContext.java
new file mode 100755
index 0000000..3bbaedc
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/OasValidationContext.java
@@ -0,0 +1,47 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import io.swagger.v3.oas.models.OpenAPI;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class OasValidationContext {
+
+  private final OpenAPI openAPI;
+
+  private final Map<String, Object> attributes = new HashMap<>();
+
+  public OasValidationContext(OpenAPI openAPI) {
+    this.openAPI = openAPI;
+  }
+
+  public OpenAPI getOpenAPI() {
+    return openAPI;
+  }
+
+  public <T> T getAttribute(String name) {
+    return (T) attributes.get(name);
+  }
+
+  public <T> void setAttribute(String name, T attr) {
+    this.attributes.put(name, attr);
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/OasViolation.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/OasViolation.java
new file mode 100755
index 0000000..dd2b646
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/OasViolation.java
@@ -0,0 +1,74 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+
+import java.util.Objects;
+import java.util.StringJoiner;
+
+/**
+ * OpenAPI v3 校验出的违反限制条件的错误
+ */
+public class OasViolation {
+
+  /**
+   * 对象位置
+   */
+  private final OasObjectPropertyLocation location;
+
+  /**
+   * 错误信息
+   */
+  private final String error;
+
+  public OasViolation(OasObjectPropertyLocation location, String error) {
+    this.location = location;
+    this.error = error;
+  }
+
+  public OasObjectPropertyLocation getLocation() {
+    return location;
+  }
+
+  public String getError() {
+    return error;
+  }
+
+  @Override
+  public String toString() {
+    return new StringJoiner(", ", OasViolation.class.getSimpleName() + "[", "]")
+      .add("location=" + location)
+      .add("error='" + error + "'")
+      .toString();
+  }
+
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) return true;
+    if (o == null || getClass() != o.getClass()) return false;
+    OasViolation that = (OasViolation) o;
+    return Objects.equals(location, that.location) &&
+      Objects.equals(error, that.error);
+  }
+
+  @Override
+  public int hashCode() {
+    return Objects.hash(location, error);
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ObjectPropertyRequiredValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ObjectPropertyRequiredValidator.java
new file mode 100755
index 0000000..2192b54
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ObjectPropertyRequiredValidator.java
@@ -0,0 +1,62 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.List;
+
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+/**
+ * @param <T> <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#table-of-contents">OpenAPI Specification</a>所定义的对象
+ * @param <P> 属性的类型
+ */
+public abstract class ObjectPropertyRequiredValidator<T, P> implements OasObjectValidator<T> {
+
+  @Override
+  final public List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location,
+    T oasObject) {
+    if (StringUtils.isNotBlank(get$ref(oasObject))) {
+      return emptyList();
+    }
+    P propertyObject = getPropertyObject(oasObject);
+    if (propertyObject == null) {
+      OasObjectPropertyLocation propertyLoc = location.property(getPropertyName(), getPropertyType());
+      return singletonList(new OasViolation(propertyLoc, ViolationMessages.REQUIRED));
+    }
+    if (propertyObject != null && String.class.equals(propertyObject.getClass())
+      && StringUtils.isBlank((CharSequence) propertyObject)) {
+      OasObjectPropertyLocation propertyLoc = location.property(getPropertyName(), getPropertyType());
+      return singletonList(new OasViolation(propertyLoc, ViolationMessages.REQUIRED));
+    }
+    return emptyList();
+  }
+
+  protected abstract String get$ref(T oasObject);
+
+  protected abstract P getPropertyObject(T oasObject);
+
+  protected abstract String getPropertyName();
+
+  protected abstract OasObjectType getPropertyType();
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ObjectPropertyValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ObjectPropertyValidator.java
new file mode 100755
index 0000000..da9140e
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ObjectPropertyValidator.java
@@ -0,0 +1,67 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.validation.util.OasObjectValidatorUtils.doValidateProperty;
+import static java.util.Collections.emptyList;
+
+/**
+ * OAS Object对象的对象类型的属性校验器
+ *
+ * @param <T> <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#table-of-contents">OpenAPI Specification</a>所定义的对象
+ * @param <P> 属性的类型
+ */
+public abstract class ObjectPropertyValidator<T, P> implements OasObjectValidator<T> {
+
+  private final List<? extends OasObjectValidator<P>> oasObjectValidators;
+
+  protected ObjectPropertyValidator(List<? extends OasObjectValidator<P>> oasObjectValidators) {
+    this.oasObjectValidators = oasObjectValidators;
+  }
+
+  @Override
+  final public List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location,
+    T oasObject) {
+    if (StringUtils.isNotBlank(get$ref(oasObject))) {
+      return emptyList();
+    }
+
+    P propertyObject = getPropertyObject(oasObject);
+    if (propertyObject == null) {
+      return emptyList();
+    }
+    OasObjectPropertyLocation propertyLoc = location.property(getPropertyName(), getPropertyType());
+    return doValidateProperty(context, propertyLoc, propertyObject, oasObjectValidators);
+
+  }
+
+  protected abstract String get$ref(T oasObject);
+
+  protected abstract P getPropertyObject(T oasObject);
+
+  protected abstract String getPropertyName();
+
+  protected abstract OasObjectType getPropertyType();
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/OpenApiValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/OpenApiValidator.java
new file mode 100755
index 0000000..ca13a39
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/OpenApiValidator.java
@@ -0,0 +1,27 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import io.swagger.v3.oas.models.OpenAPI;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#openapi-object">OpenAPI Object</a>校验器
+ */
+public interface OpenApiValidator extends OasObjectValidator<OpenAPI> {
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/OperationValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/OperationValidator.java
new file mode 100755
index 0000000..d11a756
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/OperationValidator.java
@@ -0,0 +1,26 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import io.swagger.v3.oas.models.Operation;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#operationObject">Operation Object</a>校验器
+ */
+public interface OperationValidator extends OasObjectValidator<Operation> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ParameterValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ParameterValidator.java
new file mode 100755
index 0000000..6f912c7
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ParameterValidator.java
@@ -0,0 +1,26 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import io.swagger.v3.oas.models.parameters.Parameter;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#parameterObject">Parameter Object</a>校验器
+ */
+public interface ParameterValidator extends OasObjectValidator<Parameter> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/PathItemValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/PathItemValidator.java
new file mode 100755
index 0000000..b37ae25
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/PathItemValidator.java
@@ -0,0 +1,26 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import io.swagger.v3.oas.models.PathItem;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#pathItemObject">Path Item Object</a>校验器
+ */
+public interface PathItemValidator extends OasObjectValidator<PathItem> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/PathsValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/PathsValidator.java
new file mode 100755
index 0000000..a019a11
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/PathsValidator.java
@@ -0,0 +1,26 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import io.swagger.v3.oas.models.Paths;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#pathsObject">Paths Object</a>校验器
+ */
+public interface PathsValidator extends OasObjectValidator<Paths> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/RequestBodyValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/RequestBodyValidator.java
new file mode 100755
index 0000000..b6c7501
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/RequestBodyValidator.java
@@ -0,0 +1,26 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import io.swagger.v3.oas.models.parameters.RequestBody;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#request-body-object">Request Object</a>校验器
+ */
+public interface RequestBodyValidator extends OasObjectValidator<RequestBody> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ResponseValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ResponseValidator.java
new file mode 100755
index 0000000..a876275
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ResponseValidator.java
@@ -0,0 +1,27 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import io.swagger.v3.oas.models.responses.ApiResponse;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#responseObject">Response Object</a>校验器
+ */
+public interface ResponseValidator extends OasObjectValidator<ApiResponse> {
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ResponsesValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ResponsesValidator.java
new file mode 100755
index 0000000..bb18909
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ResponsesValidator.java
@@ -0,0 +1,27 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import io.swagger.v3.oas.models.responses.ApiResponses;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#responsesObject">Responses Object</a>校验器
+ */
+public interface ResponsesValidator extends OasObjectValidator<ApiResponses> {
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/SchemaValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/SchemaValidator.java
new file mode 100755
index 0000000..6cab18d
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/SchemaValidator.java
@@ -0,0 +1,27 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import io.swagger.v3.oas.models.media.Schema;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#schemaObject">Schema Object</a>校验器
+ */
+public interface SchemaValidator extends OasObjectValidator<Schema> {
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/SecuritySchemeValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/SecuritySchemeValidator.java
new file mode 100755
index 0000000..5691f7f
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/SecuritySchemeValidator.java
@@ -0,0 +1,26 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import io.swagger.v3.oas.models.security.SecurityScheme;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#security-scheme-object">Security Scheme Object</a>校验器
+ */
+public interface SecuritySchemeValidator extends OasObjectValidator<SecurityScheme> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ServerValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ServerValidator.java
new file mode 100755
index 0000000..c08b0f8
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ServerValidator.java
@@ -0,0 +1,27 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import io.swagger.v3.oas.models.servers.Server;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#serverObject">Server Object</a>校验器
+ */
+public interface ServerValidator extends OasObjectValidator<Server> {
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/TagValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/TagValidator.java
new file mode 100755
index 0000000..79f5342
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/TagValidator.java
@@ -0,0 +1,26 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+import io.swagger.v3.oas.models.tags.Tag;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#tagObject">Tag Object</a>校验器
+ */
+public interface TagValidator extends OasObjectValidator<Tag> {
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ViolationMessages.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ViolationMessages.java
new file mode 100755
index 0000000..4a0a068
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/api/ViolationMessages.java
@@ -0,0 +1,34 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.api;
+
+public abstract class ViolationMessages {
+
+  public static final String REQUIRED = "必须提供";
+
+  public static final String MUST_BE_EMPTY = "不允许提供";
+
+  public static final String LOWER_CAMEL_CASE = "必须为lower camel case";
+
+  public static final String UPPER_CAMEL_CASE = "必须为upper camel case";
+
+  public static final String UPPER_HYPHEN_CASE = "必须为upper hyphen case";
+
+}
+
+
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsCallbacksKeysValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsCallbacksKeysValidator.java
new file mode 100755
index 0000000..a796c7f
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsCallbacksKeysValidator.java
@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyKeysValidator;
+import io.swagger.v3.oas.models.Components;
+
+import java.util.Map;
+import java.util.function.Function;
+import java.util.function.Predicate;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#componentsObject">Components Object</a>
+ * .callbacks属性key校验器
+ */
+public class ComponentsCallbacksKeysValidator extends MapPropertyKeysValidator<Components>
+  implements ComponentsValidator {
+
+  public ComponentsCallbacksKeysValidator(Predicate<String> keyPredicate,
+    Function<String, String> errorFunction) {
+    super(keyPredicate, errorFunction);
+  }
+
+  @Override
+  protected String get$ref(Components oasObject) {
+    return null;
+  }
+
+  @Override
+  protected Map<String, ?> getMapProperty(Components components) {
+    return components.getCallbacks();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "callbacks";
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsCallbacksValuesValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsCallbacksValuesValidator.java
new file mode 100755
index 0000000..9620c3c
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsCallbacksValuesValidator.java
@@ -0,0 +1,59 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.CallbackValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyValuesValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.callbacks.Callback;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.CALLBACK;
+
+public class ComponentsCallbacksValuesValidator extends MapPropertyValuesValidator<Components, Callback>
+  implements ComponentsValidator {
+
+  public ComponentsCallbacksValuesValidator(List<CallbackValidator> valueValidators) {
+    super(valueValidators);
+  }
+
+  @Override
+  protected String get$ref(Components oasObject) {
+    return null;
+  }
+
+  @Override
+  protected Map<String, Callback> getMapProperty(Components components) {
+    return components.getCallbacks();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "callbacks";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return CALLBACK;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsExamplesKeysValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsExamplesKeysValidator.java
new file mode 100755
index 0000000..d08b4f8
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsExamplesKeysValidator.java
@@ -0,0 +1,53 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyKeysValidator;
+import io.swagger.v3.oas.models.Components;
+
+import java.util.Map;
+import java.util.function.Function;
+import java.util.function.Predicate;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#componentsObject">Components Object</a>
+ * .examples属性key校验器
+ */
+public class ComponentsExamplesKeysValidator extends MapPropertyKeysValidator<Components>
+  implements ComponentsValidator {
+
+  public ComponentsExamplesKeysValidator(Predicate<String> keyPredicate,
+    Function<String, String> errorFunction) {
+    super(keyPredicate, errorFunction);
+  }
+  @Override
+  protected String get$ref(Components oasObject) {
+    return null;
+  }
+  @Override
+  protected Map<String, ?> getMapProperty(Components components) {
+    return components.getExamples();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "examples";
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsExamplesValuesValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsExamplesValuesValidator.java
new file mode 100755
index 0000000..8d5b1fc
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsExamplesValuesValidator.java
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyValuesValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ExampleValidator;
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.examples.Example;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.EXAMPLE;
+
+public class ComponentsExamplesValuesValidator extends MapPropertyValuesValidator<Components, Example>
+  implements ComponentsValidator {
+
+  public ComponentsExamplesValuesValidator(List<ExampleValidator> valueValidators) {
+    super(valueValidators);
+  }
+  @Override
+  protected String get$ref(Components oasObject) {
+    return null;
+  }
+  @Override
+  protected Map<String, Example> getMapProperty(Components components) {
+    return components.getExamples();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "examples";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return EXAMPLE;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsHeadersKeysValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsHeadersKeysValidator.java
new file mode 100755
index 0000000..dd26e96
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsHeadersKeysValidator.java
@@ -0,0 +1,49 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyKeysValidator;
+import io.swagger.v3.oas.models.Components;
+
+import java.util.Map;
+import java.util.function.Function;
+import java.util.function.Predicate;
+
+public class ComponentsHeadersKeysValidator extends MapPropertyKeysValidator<Components>
+  implements ComponentsValidator {
+
+  public ComponentsHeadersKeysValidator(Predicate<String> keyPredicate,
+    Function<String, String> errorFunction) {
+    super(keyPredicate, errorFunction);
+  }
+  @Override
+  protected String get$ref(Components oasObject) {
+    return null;
+  }
+  @Override
+  protected Map<String, ?> getMapProperty(Components components) {
+    return components.getHeaders();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "headers";
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsHeadersValuesValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsHeadersValuesValidator.java
new file mode 100755
index 0000000..f3f5f23
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsHeadersValuesValidator.java
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyValuesValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.HeaderValidator;
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.headers.Header;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.HEADER;
+
+public class ComponentsHeadersValuesValidator extends MapPropertyValuesValidator<Components, Header>
+  implements ComponentsValidator {
+
+  public ComponentsHeadersValuesValidator(List<HeaderValidator> valueValidators) {
+    super(valueValidators);
+  }
+  @Override
+  protected String get$ref(Components oasObject) {
+    return null;
+  }
+  @Override
+  protected Map<String, Header> getMapProperty(Components components) {
+    return components.getHeaders();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "headers";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return HEADER;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsLinksKeysValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsLinksKeysValidator.java
new file mode 100755
index 0000000..1d53ba2
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsLinksKeysValidator.java
@@ -0,0 +1,49 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyKeysValidator;
+import io.swagger.v3.oas.models.Components;
+
+import java.util.Map;
+import java.util.function.Function;
+import java.util.function.Predicate;
+
+public class ComponentsLinksKeysValidator extends MapPropertyKeysValidator<Components>
+  implements ComponentsValidator {
+
+  public ComponentsLinksKeysValidator(Predicate<String> keyPredicate,
+    Function<String, String> errorFunction) {
+    super(keyPredicate, errorFunction);
+  }
+  @Override
+  protected String get$ref(Components oasObject) {
+    return null;
+  }
+  @Override
+  protected Map<String, ?> getMapProperty(Components components) {
+    return components.getLinks();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "links";
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsLinksValuesValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsLinksValuesValidator.java
new file mode 100755
index 0000000..958f927
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsLinksValuesValidator.java
@@ -0,0 +1,59 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.LinkValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyValuesValidator;
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.links.Link;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.LINK;
+
+public class ComponentsLinksValuesValidator extends MapPropertyValuesValidator<Components, Link>
+  implements ComponentsValidator {
+
+  public ComponentsLinksValuesValidator(List<LinkValidator> valueValidators) {
+    super(valueValidators);
+  }
+
+  @Override
+  protected String get$ref(Components oasObject) {
+    return null;
+  }
+
+  @Override
+  protected Map<String, Link> getMapProperty(Components components) {
+    return components.getLinks();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "links";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return LINK;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsParametersKeysValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsParametersKeysValidator.java
new file mode 100755
index 0000000..896b1e1
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsParametersKeysValidator.java
@@ -0,0 +1,49 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyKeysValidator;
+import io.swagger.v3.oas.models.Components;
+
+import java.util.Map;
+import java.util.function.Function;
+import java.util.function.Predicate;
+
+public class ComponentsParametersKeysValidator extends MapPropertyKeysValidator<Components>
+  implements ComponentsValidator {
+
+  public ComponentsParametersKeysValidator(Predicate<String> keyPredicate,
+    Function<String, String> errorFunction) {
+    super(keyPredicate, errorFunction);
+  }
+  @Override
+  protected String get$ref(Components oasObject) {
+    return null;
+  }
+  @Override
+  protected Map<String, ?> getMapProperty(Components components) {
+    return components.getParameters();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "parameters";
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsParametersValuesValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsParametersValuesValidator.java
new file mode 100755
index 0000000..eddffe4
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsParametersValuesValidator.java
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ParameterValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyValuesValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.parameters.Parameter;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.PARAMETER;
+
+public class ComponentsParametersValuesValidator extends MapPropertyValuesValidator<Components, Parameter>
+  implements ComponentsValidator {
+
+  public ComponentsParametersValuesValidator(List<ParameterValidator> valueValidators) {
+    super(valueValidators);
+  }
+  @Override
+  protected String get$ref(Components oasObject) {
+    return null;
+  }
+  @Override
+  protected Map<String, Parameter> getMapProperty(Components components) {
+    return components.getParameters();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "parameters";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return PARAMETER;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsRequestBodiesKeysValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsRequestBodiesKeysValidator.java
new file mode 100755
index 0000000..5103718
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsRequestBodiesKeysValidator.java
@@ -0,0 +1,49 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyKeysValidator;
+import io.swagger.v3.oas.models.Components;
+
+import java.util.Map;
+import java.util.function.Function;
+import java.util.function.Predicate;
+
+public class ComponentsRequestBodiesKeysValidator extends MapPropertyKeysValidator<Components>
+  implements ComponentsValidator {
+
+  public ComponentsRequestBodiesKeysValidator(Predicate<String> keyPredicate,
+    Function<String, String> errorFunction) {
+    super(keyPredicate, errorFunction);
+  }
+  @Override
+  protected String get$ref(Components oasObject) {
+    return null;
+  }
+  @Override
+  protected Map<String, ?> getMapProperty(Components components) {
+    return components.getRequestBodies();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "requestBodies";
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsRequestBodiesValuesValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsRequestBodiesValuesValidator.java
new file mode 100755
index 0000000..0d8a72d
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsRequestBodiesValuesValidator.java
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyValuesValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.RequestBodyValidator;
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.parameters.RequestBody;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.REQUEST_BODY;
+
+public class ComponentsRequestBodiesValuesValidator extends MapPropertyValuesValidator<Components, RequestBody>
+  implements ComponentsValidator {
+
+  public ComponentsRequestBodiesValuesValidator(List<RequestBodyValidator> valueValidators) {
+    super(valueValidators);
+  }
+  @Override
+  protected String get$ref(Components oasObject) {
+    return null;
+  }
+  @Override
+  protected Map<String, RequestBody> getMapProperty(Components components) {
+    return components.getRequestBodies();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "requestBodies";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return REQUEST_BODY;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsResponsesKeysValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsResponsesKeysValidator.java
new file mode 100755
index 0000000..e5a7394
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsResponsesKeysValidator.java
@@ -0,0 +1,49 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyKeysValidator;
+import io.swagger.v3.oas.models.Components;
+
+import java.util.Map;
+import java.util.function.Function;
+import java.util.function.Predicate;
+
+public class ComponentsResponsesKeysValidator extends MapPropertyKeysValidator<Components>
+  implements ComponentsValidator {
+
+  public ComponentsResponsesKeysValidator(Predicate<String> keyPredicate,
+    Function<String, String> errorFunction) {
+    super(keyPredicate, errorFunction);
+  }
+  @Override
+  protected String get$ref(Components oasObject) {
+    return null;
+  }
+  @Override
+  protected Map<String, ?> getMapProperty(Components components) {
+    return components.getResponses();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "responses";
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsResponsesValuesValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsResponsesValuesValidator.java
new file mode 100755
index 0000000..05a6490
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsResponsesValuesValidator.java
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyValuesValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ResponseValidator;
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.responses.ApiResponse;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.RESPONSE;
+
+public class ComponentsResponsesValuesValidator extends MapPropertyValuesValidator<Components, ApiResponse>
+  implements ComponentsValidator {
+
+  public ComponentsResponsesValuesValidator(List<ResponseValidator> valueValidators) {
+    super(valueValidators);
+  }
+  @Override
+  protected String get$ref(Components oasObject) {
+    return null;
+  }
+  @Override
+  protected Map<String, ApiResponse> getMapProperty(Components components) {
+    return components.getResponses();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "responses";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return RESPONSE;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsSchemasKeysValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsSchemasKeysValidator.java
new file mode 100755
index 0000000..344fbe9
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsSchemasKeysValidator.java
@@ -0,0 +1,49 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyKeysValidator;
+import io.swagger.v3.oas.models.Components;
+
+import java.util.Map;
+import java.util.function.Function;
+import java.util.function.Predicate;
+
+public class ComponentsSchemasKeysValidator extends MapPropertyKeysValidator<Components>
+  implements ComponentsValidator {
+
+  public ComponentsSchemasKeysValidator(Predicate<String> keyPredicate,
+    Function<String, String> errorFunction) {
+    super(keyPredicate, errorFunction);
+  }
+  @Override
+  protected String get$ref(Components oasObject) {
+    return null;
+  }
+  @Override
+  protected Map<String, ?> getMapProperty(Components components) {
+    return components.getSchemas();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "schemas";
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsSchemasValuesValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsSchemasValuesValidator.java
new file mode 100755
index 0000000..bef7547
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsSchemasValuesValidator.java
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.SchemaValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyValuesValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.media.Schema;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.SCHEMA;
+
+public class ComponentsSchemasValuesValidator extends MapPropertyValuesValidator<Components, Schema>
+  implements ComponentsValidator {
+
+  public ComponentsSchemasValuesValidator(List<SchemaValidator> valueValidators) {
+    super(valueValidators);
+  }
+  @Override
+  protected String get$ref(Components oasObject) {
+    return null;
+  }
+  @Override
+  protected Map<String, Schema> getMapProperty(Components components) {
+    return components.getSchemas();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "schemas";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return SCHEMA;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsSecuritySchemesKeysValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsSecuritySchemesKeysValidator.java
new file mode 100755
index 0000000..c355c70
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsSecuritySchemesKeysValidator.java
@@ -0,0 +1,49 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyKeysValidator;
+import io.swagger.v3.oas.models.Components;
+
+import java.util.Map;
+import java.util.function.Function;
+import java.util.function.Predicate;
+
+public class ComponentsSecuritySchemesKeysValidator extends MapPropertyKeysValidator<Components>
+  implements ComponentsValidator {
+
+  public ComponentsSecuritySchemesKeysValidator(Predicate<String> keyPredicate,
+    Function<String, String> errorFunction) {
+    super(keyPredicate, errorFunction);
+  }
+  @Override
+  protected String get$ref(Components oasObject) {
+    return null;
+  }
+  @Override
+  protected Map<String, ?> getMapProperty(Components components) {
+    return components.getSecuritySchemes();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "securitySchemes";
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsSecuritySchemesValuesValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsSecuritySchemesValuesValidator.java
new file mode 100755
index 0000000..d06fc5a
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/components/ComponentsSecuritySchemesValuesValidator.java
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.components;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.SecuritySchemeValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyValuesValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.security.SecurityScheme;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.SECURITY_SCHEME;
+
+public class ComponentsSecuritySchemesValuesValidator extends MapPropertyValuesValidator<Components, SecurityScheme>
+  implements ComponentsValidator {
+
+  public ComponentsSecuritySchemesValuesValidator(List<SecuritySchemeValidator> valueValidators) {
+    super(valueValidators);
+  }
+  @Override
+  protected String get$ref(Components oasObject) {
+    return null;
+  }
+  @Override
+  protected Map<String, SecurityScheme> getMapProperty(Components components) {
+    return components.getSecuritySchemes();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "securitySchemes";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return SECURITY_SCHEME;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/encoding/EncodingHeadersKeysValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/encoding/EncodingHeadersKeysValidator.java
new file mode 100755
index 0000000..db7977c
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/encoding/EncodingHeadersKeysValidator.java
@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.encoding;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyKeysValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.EncodingValidator;
+import io.swagger.v3.oas.models.media.Encoding;
+
+import java.util.Map;
+import java.util.function.Function;
+import java.util.function.Predicate;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#encodingObject">Encoding Object</a>
+ * .headers属性校验器
+ */
+public class EncodingHeadersKeysValidator extends MapPropertyKeysValidator<Encoding>
+  implements EncodingValidator {
+
+  public EncodingHeadersKeysValidator(Predicate<String> keyPredicate,
+    Function<String, String> errorFunction) {
+    super(keyPredicate, errorFunction);
+  }
+
+  @Override
+  protected String get$ref(Encoding oasObject) {
+    return null;
+  }
+
+  @Override
+  protected Map<String, ?> getMapProperty(Encoding oasObject) {
+    return oasObject.getHeaders();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "headers";
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/encoding/EncodingHeadersValuesValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/encoding/EncodingHeadersValuesValidator.java
new file mode 100755
index 0000000..2f69a1f
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/encoding/EncodingHeadersValuesValidator.java
@@ -0,0 +1,59 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.encoding;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.EncodingValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.HeaderValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyValuesValidator;
+import io.swagger.v3.oas.models.headers.Header;
+import io.swagger.v3.oas.models.media.Encoding;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.HEADER;
+
+public class EncodingHeadersValuesValidator extends MapPropertyValuesValidator<Encoding, Header>
+  implements EncodingValidator {
+
+  public EncodingHeadersValuesValidator(List<HeaderValidator> valueValidators) {
+    super(valueValidators);
+  }
+
+  @Override
+  protected String get$ref(Encoding oasObject) {
+    return null;
+  }
+
+  @Override
+  protected Map<String, Header> getMapProperty(Encoding oasObject) {
+    return oasObject.getHeaders();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "headers";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return HEADER;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/header/HeaderSchemaValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/header/HeaderSchemaValidator.java
new file mode 100755
index 0000000..6d7c6d5
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/header/HeaderSchemaValidator.java
@@ -0,0 +1,60 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.header;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.SchemaValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ObjectPropertyValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.HeaderValidator;
+import io.swagger.v3.oas.models.headers.Header;
+import io.swagger.v3.oas.models.media.Schema;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.SCHEMA;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#headerObject">Header Object</a>校验器
+ * .schema属性校验器
+ */
+public class HeaderSchemaValidator extends ObjectPropertyValidator<Header, Schema> implements HeaderValidator {
+
+  public HeaderSchemaValidator(List<SchemaValidator> oasObjectValidators) {
+    super(oasObjectValidators);
+  }
+
+  @Override
+  protected String get$ref(Header oasObject) {
+    return oasObject.get$ref();
+  }
+
+  @Override
+  protected Schema getPropertyObject(Header oasObject) {
+    return oasObject.getSchema();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "schema";
+  }
+
+  @Override
+  protected OasObjectType getPropertyType() {
+    return SCHEMA;
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/mediatype/MediaTypeEncodingValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/mediatype/MediaTypeEncodingValidator.java
new file mode 100755
index 0000000..5ea54d0
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/mediatype/MediaTypeEncodingValidator.java
@@ -0,0 +1,63 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.mediatype;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.EncodingValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MediaTypeValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyValuesValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.media.Encoding;
+import io.swagger.v3.oas.models.media.MediaType;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.ENCODING;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#media-type-object">Media Type Object</a>
+ * .encoding属性校验器
+ */
+public class MediaTypeEncodingValidator extends MapPropertyValuesValidator<MediaType, Encoding>
+  implements MediaTypeValidator {
+
+  public MediaTypeEncodingValidator(List<EncodingValidator> encodingValidators) {
+    super(encodingValidators);
+  }
+
+  @Override
+  protected String get$ref(MediaType oasObject) {
+    return null;
+  }
+
+  @Override
+  protected Map<String, Encoding> getMapProperty(MediaType oasObject) {
+    return oasObject.getEncoding();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "encoding";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return ENCODING;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/mediatype/MediaTypeSchemaValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/mediatype/MediaTypeSchemaValidator.java
new file mode 100755
index 0000000..cb3f00d
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/mediatype/MediaTypeSchemaValidator.java
@@ -0,0 +1,62 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.mediatype;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.MediaTypeValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.SchemaValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ObjectPropertyValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.media.MediaType;
+import io.swagger.v3.oas.models.media.Schema;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.SCHEMA;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#media-type-object">Media Type Object</a>
+ * .schema属性校验器
+ */
+public class MediaTypeSchemaValidator extends ObjectPropertyValidator<MediaType, Schema>
+  implements MediaTypeValidator {
+
+  public MediaTypeSchemaValidator(List<SchemaValidator> schemaValidators) {
+    super(schemaValidators);
+  }
+
+  @Override
+  protected String get$ref(MediaType oasObject) {
+    return null;
+  }
+
+  @Override
+  protected Schema getPropertyObject(MediaType oasObject) {
+    return oasObject.getSchema();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "schema";
+  }
+
+  @Override
+  protected OasObjectType getPropertyType() {
+    return SCHEMA;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/openapi/OpenApiComponentsValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/openapi/OpenApiComponentsValidator.java
new file mode 100755
index 0000000..670fc0e
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/openapi/OpenApiComponentsValidator.java
@@ -0,0 +1,64 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.openapi;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ComponentsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OpenApiValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ObjectPropertyValidator;
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.OpenAPI;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.COMPONENTS;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#openapi-object">OpenAPI Object</a>
+ * .components(<a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#componentsObject">Components Object</a>)校验器
+ */
+public class OpenApiComponentsValidator extends ObjectPropertyValidator<OpenAPI, Components>
+  implements OpenApiValidator {
+
+
+  public OpenApiComponentsValidator(
+    List<ComponentsValidator> componentsValidators) {
+    super(componentsValidators);
+  }
+
+  @Override
+  protected String get$ref(OpenAPI oasObject) {
+    return null;
+  }
+
+  @Override
+  protected Components getPropertyObject(OpenAPI oasObject) {
+    return oasObject.getComponents();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "components";
+  }
+
+  @Override
+  protected OasObjectType getPropertyType() {
+    return COMPONENTS;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/openapi/OpenApiInfoValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/openapi/OpenApiInfoValidator.java
new file mode 100755
index 0000000..2febfd3
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/openapi/OpenApiInfoValidator.java
@@ -0,0 +1,60 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.openapi;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.InfoValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OpenApiValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ObjectPropertyValidator;
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.info.Info;
+
+import java.util.List;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#openapi-object">OpenAPI Object</a>
+ * .info (<a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#infoObject">Info Object</a>)校验器
+ */
+public class OpenApiInfoValidator extends ObjectPropertyValidator<OpenAPI, Info>
+  implements OpenApiValidator {
+
+  public OpenApiInfoValidator(List<InfoValidator> infoValidators) {
+    super(infoValidators);
+  }
+
+  @Override
+  protected String get$ref(OpenAPI oasObject) {
+    return null;
+  }
+
+  @Override
+  protected Info getPropertyObject(OpenAPI oasObject) {
+    return oasObject.getInfo();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "info";
+  }
+
+  @Override
+  protected OasObjectType getPropertyType() {
+    return OasObjectType.INFO;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/openapi/OpenApiPathsValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/openapi/OpenApiPathsValidator.java
new file mode 100755
index 0000000..0ed3dbc
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/openapi/OpenApiPathsValidator.java
@@ -0,0 +1,63 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.openapi;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OpenApiValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.PathsValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ObjectPropertyValidator;
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.Paths;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.PATHS;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#openapi-object">OpenAPI Object</a>
+ * .paths(<a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#pathsObject">Paths Object</a>)校验器
+ */
+public class OpenApiPathsValidator extends ObjectPropertyValidator<OpenAPI, Paths>
+  implements OpenApiValidator {
+
+  public OpenApiPathsValidator(List<PathsValidator> pathsValidators) {
+
+    super(pathsValidators);
+  }
+
+  @Override
+  protected String get$ref(OpenAPI oasObject) {
+    return null;
+  }
+
+  @Override
+  protected Paths getPropertyObject(OpenAPI oasObject) {
+    return oasObject.getPaths();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "paths";
+  }
+
+  @Override
+  protected OasObjectType getPropertyType() {
+    return PATHS;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/openapi/OpenApiServersValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/openapi/OpenApiServersValidator.java
new file mode 100755
index 0000000..5dbe847
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/openapi/OpenApiServersValidator.java
@@ -0,0 +1,62 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.openapi;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.OpenApiValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ServerValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ListPropertyValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.servers.Server;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.SERVER;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#openapi-object">OpenAPI Object</a>
+ * .servers(List of <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#serverObject">Server Object</a>)校验器
+ */
+public class OpenApiServersValidator extends ListPropertyValidator<OpenAPI, Server>
+  implements OpenApiValidator {
+
+  public OpenApiServersValidator(List<ServerValidator> serverValidators) {
+    super(serverValidators);
+  }
+
+  @Override
+  protected String get$ref(OpenAPI oasObject) {
+    return null;
+  }
+
+  @Override
+  protected List<Server> getListProperty(OpenAPI oasObject) {
+    return oasObject.getServers();
+  }
+
+  @Override
+  protected String getListPropertyName() {
+    return "servers";
+  }
+
+  @Override
+  protected OasObjectType getElementType() {
+    return SERVER;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/openapi/OpenApiTagsValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/openapi/OpenApiTagsValidator.java
new file mode 100755
index 0000000..43ba97b
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/openapi/OpenApiTagsValidator.java
@@ -0,0 +1,62 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.openapi;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.OpenApiValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.TagValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ListPropertyValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.tags.Tag;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.TAG;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#openapi-object">OpenAPI Object</a>
+ * .tags(List of <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#tagObject">Tag Object</a>)校验器
+ */
+public class OpenApiTagsValidator extends ListPropertyValidator<OpenAPI, Tag>
+  implements OpenApiValidator {
+
+  public OpenApiTagsValidator(List<TagValidator> tagValidators) {
+    super(tagValidators);
+  }
+
+  @Override
+  protected String get$ref(OpenAPI oasObject) {
+    return null;
+  }
+
+  @Override
+  protected List<Tag> getListProperty(OpenAPI oasObject) {
+    return oasObject.getTags();
+  }
+
+  @Override
+  protected String getListPropertyName() {
+    return "tags";
+  }
+
+  @Override
+  protected OasObjectType getElementType() {
+    return TAG;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/operation/OperationParametersValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/operation/OperationParametersValidator.java
new file mode 100755
index 0000000..bd0f641
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/operation/OperationParametersValidator.java
@@ -0,0 +1,62 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.operation;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OperationValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ParameterValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ListPropertyValidator;
+import io.swagger.v3.oas.models.Operation;
+import io.swagger.v3.oas.models.parameters.Parameter;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.PARAMETER;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#operationObject">Operation Object</a>
+ * .parameters校验器
+ */
+public class OperationParametersValidator extends ListPropertyValidator<Operation, Parameter>
+  implements OperationValidator {
+
+  public OperationParametersValidator(List<ParameterValidator> parameterValidators) {
+    super(parameterValidators);
+  }
+
+  @Override
+  protected String get$ref(Operation oasObject) {
+    return null;
+  }
+
+  @Override
+  protected List<Parameter> getListProperty(Operation oasObject) {
+    return oasObject.getParameters();
+  }
+
+  @Override
+  protected String getListPropertyName() {
+    return "parameters";
+  }
+
+  @Override
+  protected OasObjectType getElementType() {
+    return PARAMETER;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/operation/OperationRequestBodyValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/operation/OperationRequestBodyValidator.java
new file mode 100755
index 0000000..e68a82f
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/operation/OperationRequestBodyValidator.java
@@ -0,0 +1,63 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.operation;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OperationValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.RequestBodyValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ObjectPropertyValidator;
+import io.swagger.v3.oas.models.Operation;
+import io.swagger.v3.oas.models.parameters.RequestBody;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.REQUEST_BODY;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#operationObject">Operation Object</a>
+ * .requestBody校验器
+ */
+public class OperationRequestBodyValidator extends ObjectPropertyValidator<Operation, RequestBody>
+  implements OperationValidator {
+
+  public OperationRequestBodyValidator(
+    List<RequestBodyValidator> requestBodyValidators) {
+    super(requestBodyValidators);
+  }
+
+  @Override
+  protected String get$ref(Operation oasObject) {
+    return null;
+  }
+
+  @Override
+  protected RequestBody getPropertyObject(Operation oasObject) {
+    return oasObject.getRequestBody();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "requestBody";
+  }
+
+  @Override
+  protected OasObjectType getPropertyType() {
+    return REQUEST_BODY;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/operation/OperationResponsesValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/operation/OperationResponsesValidator.java
new file mode 100755
index 0000000..e37c780
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/operation/OperationResponsesValidator.java
@@ -0,0 +1,62 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.operation;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.OperationValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ResponsesValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ObjectPropertyValidator;
+import io.swagger.v3.oas.models.Operation;
+import io.swagger.v3.oas.models.responses.ApiResponses;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.RESPONSES;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#operationObject">Operation Object</a>
+ * .responses校验器
+ */
+public class OperationResponsesValidator extends ObjectPropertyValidator<Operation, ApiResponses>
+  implements OperationValidator {
+
+  public OperationResponsesValidator(List<ResponsesValidator> responseValidators) {
+    super(responseValidators);
+  }
+
+  @Override
+  protected String get$ref(Operation oasObject) {
+    return null;
+  }
+
+  @Override
+  protected ApiResponses getPropertyObject(Operation oasObject) {
+    return oasObject.getResponses();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "responses";
+  }
+
+  @Override
+  protected OasObjectType getPropertyType() {
+    return RESPONSES;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/parameter/ParameterContentValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/parameter/ParameterContentValidator.java
new file mode 100755
index 0000000..22d7e7c
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/parameter/ParameterContentValidator.java
@@ -0,0 +1,63 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.MediaTypeValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ParameterValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyValuesValidator;
+import io.swagger.v3.oas.models.media.MediaType;
+import io.swagger.v3.oas.models.parameters.Parameter;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.MEDIA_TYPE;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#parameterObject">Parameter Object</a>属性校验器
+ * .content属性校验器
+ */
+public class ParameterContentValidator extends MapPropertyValuesValidator<Parameter, MediaType>
+  implements ParameterValidator {
+
+  public ParameterContentValidator(List<MediaTypeValidator> mediaTypeValidators) {
+    super(mediaTypeValidators);
+  }
+
+  @Override
+  protected String get$ref(Parameter oasObject) {
+    return oasObject.get$ref();
+  }
+
+  @Override
+  protected Map<String, MediaType> getMapProperty(Parameter oasObject) {
+    return oasObject.getContent();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "content";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return MEDIA_TYPE;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/parameter/ParameterSchemaValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/parameter/ParameterSchemaValidator.java
new file mode 100755
index 0000000..04383f4
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/parameter/ParameterSchemaValidator.java
@@ -0,0 +1,63 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.parameter;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ParameterValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.SchemaValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ObjectPropertyValidator;
+import io.swagger.v3.oas.models.media.Schema;
+import io.swagger.v3.oas.models.parameters.Parameter;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.SCHEMA;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#parameterObject">Parameter Object</a>属性校验器
+ * .schema属性校验器
+ */
+public class ParameterSchemaValidator extends ObjectPropertyValidator<Parameter, Schema>
+  implements ParameterValidator {
+
+  public ParameterSchemaValidator(
+    List<SchemaValidator> schemaValidators) {
+    super(schemaValidators);
+  }
+
+  @Override
+  protected String get$ref(Parameter oasObject) {
+    return oasObject.get$ref();
+  }
+
+  @Override
+  protected Schema getPropertyObject(Parameter oasObject) {
+    return oasObject.getSchema();
+  }
+
+  @Override
+  protected String getPropertyName() {
+    return "schema";
+  }
+
+  @Override
+  protected OasObjectType getPropertyType() {
+    return SCHEMA;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/pathitem/PathItemOperationsValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/pathitem/PathItemOperationsValidator.java
new file mode 100755
index 0000000..2771f71
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/pathitem/PathItemOperationsValidator.java
@@ -0,0 +1,67 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.pathitem;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.util.OasObjectValidatorUtils;
+import org.apache.servicecomb.toolkit.oasv.validation.api.*;
+import io.swagger.v3.oas.models.Operation;
+import io.swagger.v3.oas.models.PathItem;
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import static java.util.Collections.emptyList;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#pathItemObject">Path Item Object</a>
+ * .get / .put / .post / .delete / .options / .head / .patch / .trace 各个
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#operationObject">Operation Object</a>的校验器
+ */
+public class PathItemOperationsValidator implements PathItemValidator {
+
+  private final List<OperationValidator> operationValidators;
+
+  public PathItemOperationsValidator(List<OperationValidator> operationValidators) {
+    this.operationValidators = operationValidators;
+  }
+
+  @Override
+  public List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location,
+    PathItem oasObject) {
+    if (StringUtils.isNotBlank(oasObject.get$ref())) {
+      return emptyList();
+    }
+
+    List<OasViolation> violations = new ArrayList<>();
+
+    Map<PathItem.HttpMethod, Operation> operationMap = oasObject.readOperationsMap();
+
+    for (Map.Entry<PathItem.HttpMethod, Operation> entry : operationMap.entrySet()) {
+      PathItem.HttpMethod method = entry.getKey();
+      Operation operation = entry.getValue();
+      OasObjectPropertyLocation operationLocation = location.property(method.toString().toLowerCase(), OasObjectType.OPERATION);
+      violations.addAll(
+        OasObjectValidatorUtils.doValidateProperty(context, operationLocation, operation, operationValidators));
+    }
+    return violations;
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/pathitem/PathItemParametersValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/pathitem/PathItemParametersValidator.java
new file mode 100755
index 0000000..7528bdf
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/pathitem/PathItemParametersValidator.java
@@ -0,0 +1,62 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.pathitem;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ParameterValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ListPropertyValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.PathItemValidator;
+import io.swagger.v3.oas.models.PathItem;
+import io.swagger.v3.oas.models.parameters.Parameter;
+
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.PARAMETER;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#pathItemObject">Path Item Object</a>
+ * .parameters (List of <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#parameterObject">Parameter Object</a>)的校验器
+ */
+public class PathItemParametersValidator extends ListPropertyValidator<PathItem, Parameter>
+  implements PathItemValidator {
+
+  public PathItemParametersValidator(List<ParameterValidator> parameterValidators) {
+    super(parameterValidators);
+  }
+
+  @Override
+  protected String get$ref(PathItem oasObject) {
+    return oasObject.get$ref();
+  }
+
+  @Override
+  protected List<Parameter> getListProperty(PathItem oasObject) {
+    return oasObject.getParameters();
+  }
+
+  @Override
+  protected String getListPropertyName() {
+    return "parameters";
+  }
+
+  @Override
+  protected OasObjectType getElementType() {
+    return PARAMETER;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/paths/PathsPathItemsValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/paths/PathsPathItemsValidator.java
new file mode 100755
index 0000000..10d76db
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/paths/PathsPathItemsValidator.java
@@ -0,0 +1,61 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.paths;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasValidationContext;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.PathItemValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.PathsValidator;
+import io.swagger.v3.oas.models.PathItem;
+import io.swagger.v3.oas.models.Paths;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.validation.util.OasObjectValidatorUtils.doValidateProperty;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#pathsObject">Paths Object</a>
+ * /{path} (Map [String, <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#pathItemObject">Path Item Object</a>])校验器
+ */
+public class PathsPathItemsValidator implements PathsValidator {
+
+  private final List<PathItemValidator> pathItemValidators;
+
+  public PathsPathItemsValidator(List<PathItemValidator> pathItemValidators) {
+    this.pathItemValidators = pathItemValidators;
+  }
+
+  @Override
+  public List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location, Paths oasObject) {
+    List<OasViolation> violations = new ArrayList<>();
+
+    for (Map.Entry<String, PathItem> entry : oasObject.entrySet()) {
+      String path = entry.getKey();
+      PathItem pathItem = entry.getValue();
+      OasObjectPropertyLocation pathItemLocation = location.property(path, OasObjectType.PATH_ITEM);
+      violations.addAll(doValidateProperty(context, pathItemLocation, pathItem, pathItemValidators));
+    }
+
+    return violations;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/requestbody/RequestBodyContentValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/requestbody/RequestBodyContentValidator.java
new file mode 100755
index 0000000..c7bdea3
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/requestbody/RequestBodyContentValidator.java
@@ -0,0 +1,64 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.requestbody;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MediaTypeValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.RequestBodyValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyValuesValidator;
+import io.swagger.v3.oas.models.media.MediaType;
+import io.swagger.v3.oas.models.parameters.RequestBody;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.MEDIA_TYPE;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#request-body-object">Request Object</a>
+ * .content属性校验器
+ */
+public class RequestBodyContentValidator
+  extends MapPropertyValuesValidator<RequestBody, MediaType>
+  implements RequestBodyValidator {
+
+  public RequestBodyContentValidator(List<MediaTypeValidator> mediaTypeValidators) {
+    super(mediaTypeValidators);
+  }
+
+  @Override
+  protected String get$ref(RequestBody oasObject) {
+    return oasObject.get$ref();
+  }
+
+  @Override
+  protected Map<String, MediaType> getMapProperty(RequestBody oasObject) {
+    return oasObject.getContent();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "content";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return MEDIA_TYPE;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/response/ResponseContentValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/response/ResponseContentValidator.java
new file mode 100755
index 0000000..723bd0b
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/response/ResponseContentValidator.java
@@ -0,0 +1,63 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.response;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.MediaTypeValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ResponseValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyValuesValidator;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.media.MediaType;
+import io.swagger.v3.oas.models.responses.ApiResponse;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.MEDIA_TYPE;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#responseObject">Response Object</a>
+ * .content属性校验器
+ */
+public class ResponseContentValidator extends MapPropertyValuesValidator<ApiResponse, MediaType>
+  implements ResponseValidator {
+
+  public ResponseContentValidator(List<MediaTypeValidator> mediaTypeValidators) {
+    super(mediaTypeValidators);
+  }
+
+  @Override
+  protected String get$ref(ApiResponse oasObject) {
+    return oasObject.get$ref();
+  }
+
+  @Override
+  protected Map<String, MediaType> getMapProperty(ApiResponse oasObject) {
+    return oasObject.getContent();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "content";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return MEDIA_TYPE;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/response/ResponseHeadersKeysValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/response/ResponseHeadersKeysValidator.java
new file mode 100755
index 0000000..3f38124
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/response/ResponseHeadersKeysValidator.java
@@ -0,0 +1,55 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.response;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.ResponseValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyKeysValidator;
+import io.swagger.v3.oas.models.responses.ApiResponse;
+
+import java.util.Map;
+import java.util.function.Function;
+import java.util.function.Predicate;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#componentsObject">ApiResponse Object</a>
+ * .callbacks属性key校验器
+ */
+public class ResponseHeadersKeysValidator extends MapPropertyKeysValidator<ApiResponse>
+  implements ResponseValidator {
+
+  public ResponseHeadersKeysValidator(Predicate<String> keyPredicate,
+    Function<String, String> errorFunction) {
+    super(keyPredicate, errorFunction);
+  }
+
+  @Override
+  protected String get$ref(ApiResponse oasObject) {
+    return oasObject.get$ref();
+  }
+
+  @Override
+  protected Map<String, ?> getMapProperty(ApiResponse oasObject) {
+    return oasObject.getHeaders();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "headers";
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/response/ResponseHeadersValuesValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/response/ResponseHeadersValuesValidator.java
new file mode 100755
index 0000000..5fefbc7
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/response/ResponseHeadersValuesValidator.java
@@ -0,0 +1,59 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.response;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.HeaderValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ResponseValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.MapPropertyValuesValidator;
+import io.swagger.v3.oas.models.headers.Header;
+import io.swagger.v3.oas.models.responses.ApiResponse;
+
+import java.util.List;
+import java.util.Map;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.HEADER;
+
+public class ResponseHeadersValuesValidator extends MapPropertyValuesValidator<ApiResponse, Header>
+  implements ResponseValidator {
+
+  public ResponseHeadersValuesValidator(List<HeaderValidator> valueValidators) {
+    super(valueValidators);
+  }
+
+  @Override
+  protected String get$ref(ApiResponse oasObject) {
+    return oasObject.get$ref();
+  }
+
+  @Override
+  protected Map<String, Header> getMapProperty(ApiResponse components) {
+    return components.getHeaders();
+  }
+
+  @Override
+  protected String getMapPropertyName() {
+    return "headers";
+  }
+
+  @Override
+  protected OasObjectType getValueType() {
+    return HEADER;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/responses/ResponsesResponsesValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/responses/ResponsesResponsesValidator.java
new file mode 100755
index 0000000..209ae8e
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/responses/ResponsesResponsesValidator.java
@@ -0,0 +1,62 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.responses;
+
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasValidationContext;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ResponseValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.ResponsesValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.util.OasObjectValidatorUtils;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import io.swagger.v3.oas.models.responses.ApiResponse;
+import io.swagger.v3.oas.models.responses.ApiResponses;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#responsesObject">Responses Object</a>
+ * .default / .{Http Status Code} 属性校验器
+ */
+public class ResponsesResponsesValidator implements ResponsesValidator {
+
+  private final List<ResponseValidator> responseValidators;
+
+  public ResponsesResponsesValidator(List<ResponseValidator> responseValidators) {
+    this.responseValidators = responseValidators;
+  }
+
+  @Override
+  public List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location,
+    ApiResponses oasObject) {
+
+    List<OasViolation> violations = new ArrayList<>();
+
+    for (Map.Entry<String, ApiResponse> entry : oasObject.entrySet()) {
+      String statusCode = entry.getKey();
+      ApiResponse response = entry.getValue();
+      OasObjectPropertyLocation responseLoc = location.property(statusCode, OasObjectType.RESPONSE);
+      violations.addAll(OasObjectValidatorUtils.doValidateProperty(context, responseLoc, response, responseValidators));
+    }
+
+    return violations;
+
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/schema/SchemaPropertiesKeysValidator.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/schema/SchemaPropertiesKeysValidator.java
new file mode 100755
index 0000000..7b81745
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/schema/SchemaPropertiesKeysValidator.java
@@ -0,0 +1,71 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.schema;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasValidationContext;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.util.OasObjectValidatorUtils;
+import io.swagger.v3.oas.models.media.Schema;
+import org.apache.commons.collections4.MapUtils;
+
+import java.util.List;
+import java.util.Map;
+import java.util.function.Function;
+import java.util.function.Predicate;
+
+import static java.util.Collections.emptyList;
+
+/**
+ * <a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#schemaObject">Schema Object</a>
+ * .properties属性keys校验器
+ */
+public class SchemaPropertiesKeysValidator
+  extends SchemaRecursiveValidatorTemplate {
+
+  private final Predicate<String> keyPredicate;
+
+  private final Function<String, String> errorFunction;
+
+  public SchemaPropertiesKeysValidator(Predicate<String> keyPredicate,
+    Function<String, String> errorFunction) {
+    this.keyPredicate = keyPredicate;
+    this.errorFunction = errorFunction;
+  }
+
+  @Override
+  protected List<OasViolation> validateCurrentSchemaObject(OasValidationContext context, Schema oasObject,
+    OasObjectPropertyLocation location) {
+
+    Map<String, Schema> properties = oasObject.getProperties();
+
+    if (MapUtils.isEmpty(properties)) {
+      return emptyList();
+    }
+
+    return
+      OasObjectValidatorUtils.doValidateMapPropertyKeys(
+        location,
+        "properties",
+        properties,
+        keyPredicate,
+        errorFunction
+      );
+
+  }
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/schema/SchemaRecursiveValidatorTemplate.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/schema/SchemaRecursiveValidatorTemplate.java
new file mode 100755
index 0000000..96284e8
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/skeleton/schema/SchemaRecursiveValidatorTemplate.java
@@ -0,0 +1,127 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.skeleton.schema;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasValidationContext;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.SchemaValidator;
+import io.swagger.v3.oas.models.media.ArraySchema;
+import io.swagger.v3.oas.models.media.ComposedSchema;
+import io.swagger.v3.oas.models.media.Schema;
+import org.apache.commons.lang3.StringUtils;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.apache.servicecomb.toolkit.oasv.common.OasObjectType.SCHEMA;
+import static org.apache.servicecomb.toolkit.oasv.validation.util.OasObjectValidatorUtils.doValidateListProperty;
+import static org.apache.servicecomb.toolkit.oasv.validation.util.OasObjectValidatorUtils.doValidateMapPropertyValues;
+import static java.util.Collections.emptyList;
+import static java.util.Collections.singletonList;
+
+/**
+ * 递归检查当前Schema Object及其properties下的所有Sub Schema Object
+ */
+public abstract class SchemaRecursiveValidatorTemplate implements SchemaValidator {
+
+  @Override
+  public final List<OasViolation> validate(OasValidationContext context, OasObjectPropertyLocation location,
+    Schema oasObject) {
+
+    if (StringUtils.isNotBlank(oasObject.get$ref())) {
+      return emptyList();
+    }
+    if (oasObject instanceof ComposedSchema) {
+      return validateComposedSchema(context, (ComposedSchema) oasObject, location);
+    }
+    if (oasObject instanceof ArraySchema) {
+      return validateArraySchema(context, (ArraySchema) oasObject, location);
+    }
+    return validateOrdinarySchema(context, oasObject, location);
+
+  }
+
+  private List<OasViolation> validateOrdinarySchema(OasValidationContext context, Schema oasObject,
+    OasObjectPropertyLocation location) {
+
+    List<OasViolation> violations = new ArrayList<>();
+    violations.addAll(validateCurrentSchemaObject(context, oasObject, location));
+
+    violations.addAll(
+      doValidateMapPropertyValues(
+        context,
+        location,
+        "properties",
+        oasObject.getProperties(),
+        SCHEMA,
+        singletonList(this)
+      )
+    );
+
+    return violations;
+
+  }
+
+  private List<OasViolation> validateArraySchema(OasValidationContext context, ArraySchema oasObject,
+    OasObjectPropertyLocation location) {
+    return validate(context, location.property("items", SCHEMA), oasObject.getItems());
+  }
+
+  private List<OasViolation> validateComposedSchema(OasValidationContext context, ComposedSchema oasObject,
+    OasObjectPropertyLocation location) {
+
+    List<OasViolation> violations = new ArrayList<>();
+
+    violations.addAll(
+      doValidateListProperty(
+        context, location,
+        "allOf",
+        oasObject.getAllOf(),
+        SCHEMA,
+        singletonList(this)
+      )
+    );
+
+    violations.addAll(
+      doValidateListProperty(
+        context, location,
+        "anyOf",
+        oasObject.getAnyOf(),
+        SCHEMA,
+        singletonList(this)
+      )
+    );
+
+    violations.addAll(
+      doValidateListProperty(
+        context, location,
+        "oneOf",
+        oasObject.getOneOf(),
+        SCHEMA,
+        singletonList(this)
+      )
+    );
+
+    return violations;
+  }
+
+  protected abstract List<OasViolation> validateCurrentSchemaObject(OasValidationContext context, Schema oasObject,
+    OasObjectPropertyLocation location);
+
+}
diff --git a/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/util/OasObjectValidatorUtils.java b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/util/OasObjectValidatorUtils.java
new file mode 100755
index 0000000..3737977
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/util/OasObjectValidatorUtils.java
@@ -0,0 +1,169 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.util;
+
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.*;
+import org.apache.commons.collections4.CollectionUtils;
+import org.apache.commons.collections4.MapUtils;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.function.Function;
+import java.util.function.Predicate;
+
+import static java.util.Collections.emptyList;
+
+public abstract class OasObjectValidatorUtils {
+
+  private OasObjectValidatorUtils() {
+    // singleton
+  }
+
+  /**
+   * @param context
+   * @param propertyLoc
+   * @param propertyObject
+   * @param validators
+   * @param <T>
+   * @return
+   */
+  public static <T> List<OasViolation> doValidateProperty(
+    OasValidationContext context,
+    OasObjectPropertyLocation propertyLoc,
+    T propertyObject,
+    List<? extends OasObjectValidator<T>> validators) {
+
+    List<OasViolation> violations = new ArrayList<>();
+    for (OasObjectValidator validator : validators) {
+      violations.addAll(validator.validate(context, propertyLoc, propertyObject));
+    }
+    return violations;
+  }
+
+  /**
+   * @param <T>
+   * @param context
+   * @param ownerLocation    拥有listProperty属性的对象的Location
+   * @param listPropertyName listProperty属性的名字
+   * @param listProperty     null-safe
+   * @param elementType      listProperty中element的类型
+   * @param validators
+   * @return
+   */
+  public static <T> List<OasViolation> doValidateListProperty(
+    OasValidationContext context,
+    OasObjectPropertyLocation ownerLocation,
+    String listPropertyName,
+    List<T> listProperty,
+    OasObjectType elementType,
+    List<? extends OasObjectValidator<T>> validators) {
+
+    if (CollectionUtils.isEmpty(listProperty)) {
+      return emptyList();
+    }
+
+    List<OasViolation> violations = new ArrayList<>();
+    for (int i = 0; i < listProperty.size(); i++) {
+      T object = listProperty.get(i);
+      String elementName = listPropertyName + "[" + i + "]";
+      OasObjectPropertyLocation elementLoc = ownerLocation.property(elementName, elementType);
+      violations.addAll(doValidateProperty(context, elementLoc, object, validators));
+    }
+    return violations;
+
+  }
+
+  /**
+   * @param ownerLocation   拥有mapProperty属性的对象的Location
+   * @param mapPropertyName mapProperty属性的名字
+   * @param mapProperty     null-safe
+   * @param keyPredicate
+   * @param errorMessage
+   * @param <T>
+   * @return
+   */
+  public static <T> List<OasViolation> doValidateMapPropertyKeys(
+    OasObjectPropertyLocation ownerLocation,
+    String mapPropertyName,
+    Map<String, T> mapProperty,
+    Predicate<String> keyPredicate,
+    Function<String, String> errorMessage
+  ) {
+
+    if (MapUtils.isEmpty(mapProperty)) {
+      return emptyList();
+    }
+
+    List<OasViolation> violations = new ArrayList<>();
+
+    for (Map.Entry<String, T> entry : mapProperty.entrySet()) {
+      String key = entry.getKey();
+      String keyName = mapPropertyName + ".'" + key + "'";
+
+      OasObjectPropertyLocation keyLoc = ownerLocation.property(keyName);
+
+      if (!keyPredicate.test(key)) {
+        violations.add(new OasViolation(keyLoc, errorMessage.apply(key)));
+      }
+
+    }
+
+    return violations;
+  }
+
+  /**
+   * @param <T>
+   * @param context
+   * @param ownerLocation   拥有mapProperty属性的对象的Location
+   * @param mapPropertyName mapProperty属性的名字
+   * @param mapProperty     null-safe
+   * @param valueType       mapProperty中value的类型
+   * @param validators
+   * @return
+   */
+  public static <T> List<OasViolation> doValidateMapPropertyValues(
+    OasValidationContext context,
+    OasObjectPropertyLocation ownerLocation,
+    String mapPropertyName,
+    Map<String, T> mapProperty,
+    OasObjectType valueType,
+    List<? extends OasObjectValidator<T>> validators
+  ) {
+
+    if (MapUtils.isEmpty(mapProperty)) {
+      return emptyList();
+    }
+
+    List<OasViolation> violations = new ArrayList<>();
+
+    for (Map.Entry<String, T> entry : mapProperty.entrySet()) {
+      String key = entry.getKey();
+      T value = entry.getValue();
+
+      String keyName = mapPropertyName + ".'" + key + "'";
+      OasObjectPropertyLocation valueLoc = ownerLocation.property(keyName, valueType);
+      violations.addAll(doValidateProperty(context, valueLoc, value, validators));
+    }
+
+    return violations;
+  }
+
+}
diff --git a/oas-validator/oas-validator-core/src/test/java/org/apache/servicecomb/toolkit/oasv/util/StringCaseUtilsTest.java b/oas-validator/oas-validator-core/src/test/java/org/apache/servicecomb/toolkit/oasv/util/StringCaseUtilsTest.java
new file mode 100755
index 0000000..0ed79a7
--- /dev/null
+++ b/oas-validator/oas-validator-core/src/test/java/org/apache/servicecomb/toolkit/oasv/util/StringCaseUtilsTest.java
@@ -0,0 +1,175 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.util;
+
+import org.apache.servicecomb.toolkit.oasv.util.StringCaseUtils;
+import org.junit.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class StringCaseUtilsTest {
+
+  @Test
+  public void isLowerCamelCase() {
+
+    assertThat(StringCaseUtils.isLowerCamelCase("")).isFalse();
+
+    assertThat(StringCaseUtils.isLowerCamelCase("A")).isFalse();
+    assertThat(StringCaseUtils.isLowerCamelCase("A0")).isFalse();
+    assertThat(StringCaseUtils.isLowerCamelCase("Aa")).isFalse();
+    assertThat(StringCaseUtils.isLowerCamelCase("AA")).isFalse();
+
+    assertThat(StringCaseUtils.isLowerCamelCase("0")).isFalse();
+    assertThat(StringCaseUtils.isLowerCamelCase("00")).isFalse();
+    assertThat(StringCaseUtils.isLowerCamelCase("0a")).isFalse();
+    assertThat(StringCaseUtils.isLowerCamelCase("0A")).isFalse();
+
+    assertThat(StringCaseUtils.isLowerCamelCase("a")).isTrue();
+    assertThat(StringCaseUtils.isLowerCamelCase("a0")).isTrue();
+    assertThat(StringCaseUtils.isLowerCamelCase("aa")).isTrue();
+    assertThat(StringCaseUtils.isLowerCamelCase("aA")).isTrue();
+
+    assertThat(StringCaseUtils.isLowerCamelCase("a00")).isTrue();
+    assertThat(StringCaseUtils.isLowerCamelCase("a0a")).isTrue();
+    assertThat(StringCaseUtils.isLowerCamelCase("a0A")).isTrue();
+
+    assertThat(StringCaseUtils.isLowerCamelCase("aa0")).isTrue();
+    assertThat(StringCaseUtils.isLowerCamelCase("aaa")).isTrue();
+    assertThat(StringCaseUtils.isLowerCamelCase("aaA")).isTrue();
+
+    assertThat(StringCaseUtils.isLowerCamelCase("aaA0")).isTrue();
+    assertThat(StringCaseUtils.isLowerCamelCase("aaAa")).isTrue();
+    assertThat(StringCaseUtils.isLowerCamelCase("aaAA")).isFalse();
+
+    assertThat(StringCaseUtils.isLowerCamelCase("aaA00")).isTrue();
+    assertThat(StringCaseUtils.isLowerCamelCase("aaA0a")).isTrue();
+    assertThat(StringCaseUtils.isLowerCamelCase("aaA0A")).isTrue();
+
+    assertThat(StringCaseUtils.isLowerCamelCase("_aaA00")).isFalse();
+    assertThat(StringCaseUtils.isLowerCamelCase("a_aA00")).isFalse();
+    assertThat(StringCaseUtils.isLowerCamelCase("aa_A00")).isFalse();
+    assertThat(StringCaseUtils.isLowerCamelCase("aaA_00")).isFalse();
+    assertThat(StringCaseUtils.isLowerCamelCase("aaA0_0")).isFalse();
+    assertThat(StringCaseUtils.isLowerCamelCase("aaA00_")).isFalse();
+
+  }
+
+  @Test
+  public void isUpperCamelCase() {
+
+    assertThat(StringCaseUtils.isUpperCamelCase("")).isFalse();
+
+    assertThat(StringCaseUtils.isUpperCamelCase("A")).isTrue();
+    assertThat(StringCaseUtils.isUpperCamelCase("A0")).isTrue();
+    assertThat(StringCaseUtils.isUpperCamelCase("Aa")).isTrue();
+    assertThat(StringCaseUtils.isUpperCamelCase("AA")).isFalse();
+
+    assertThat(StringCaseUtils.isUpperCamelCase("0")).isFalse();
+    assertThat(StringCaseUtils.isUpperCamelCase("00")).isFalse();
+    assertThat(StringCaseUtils.isUpperCamelCase("0a")).isFalse();
+    assertThat(StringCaseUtils.isUpperCamelCase("0A")).isFalse();
+
+    assertThat(StringCaseUtils.isUpperCamelCase("a")).isFalse();
+    assertThat(StringCaseUtils.isUpperCamelCase("a0")).isFalse();
+    assertThat(StringCaseUtils.isUpperCamelCase("aa")).isFalse();
+    assertThat(StringCaseUtils.isUpperCamelCase("aA")).isFalse();
+
+    assertThat(StringCaseUtils.isUpperCamelCase("A00")).isTrue();
+    assertThat(StringCaseUtils.isUpperCamelCase("A0a")).isTrue();
+    assertThat(StringCaseUtils.isUpperCamelCase("A0A")).isTrue();
+
+    assertThat(StringCaseUtils.isUpperCamelCase("Aa0")).isTrue();
+    assertThat(StringCaseUtils.isUpperCamelCase("Aaa")).isTrue();
+    assertThat(StringCaseUtils.isUpperCamelCase("AaA")).isTrue();
+
+    assertThat(StringCaseUtils.isUpperCamelCase("AaA0")).isTrue();
+    assertThat(StringCaseUtils.isUpperCamelCase("AaAa")).isTrue();
+    assertThat(StringCaseUtils.isUpperCamelCase("AaAA")).isFalse();
+
+    assertThat(StringCaseUtils.isUpperCamelCase("AaA00")).isTrue();
+    assertThat(StringCaseUtils.isUpperCamelCase("AaA0a")).isTrue();
+    assertThat(StringCaseUtils.isUpperCamelCase("AaA0A")).isTrue();
+
+    assertThat(StringCaseUtils.isUpperCamelCase("_aaA00")).isFalse();
+    assertThat(StringCaseUtils.isUpperCamelCase("a_aA00")).isFalse();
+    assertThat(StringCaseUtils.isUpperCamelCase("aa_A00")).isFalse();
+    assertThat(StringCaseUtils.isUpperCamelCase("aaA_00")).isFalse();
+    assertThat(StringCaseUtils.isUpperCamelCase("aaA0_0")).isFalse();
+    assertThat(StringCaseUtils.isUpperCamelCase("aaA00_")).isFalse();
+
+  }
+
+  @Test
+  public void isUpperHyphenCase() {
+
+    assertThat(StringCaseUtils.isUpperHyphenCase("")).isFalse();
+
+    assertThat(StringCaseUtils.isUpperHyphenCase("A")).isTrue();
+    assertThat(StringCaseUtils.isUpperHyphenCase("A0")).isTrue();
+    assertThat(StringCaseUtils.isUpperHyphenCase("Aa")).isTrue();
+    assertThat(StringCaseUtils.isUpperHyphenCase("AA")).isFalse();
+
+    assertThat(StringCaseUtils.isUpperHyphenCase("0")).isFalse();
+    assertThat(StringCaseUtils.isUpperHyphenCase("00")).isFalse();
+    assertThat(StringCaseUtils.isUpperHyphenCase("0a")).isFalse();
+    assertThat(StringCaseUtils.isUpperHyphenCase("0A")).isFalse();
+
+    assertThat(StringCaseUtils.isUpperHyphenCase("a")).isFalse();
+    assertThat(StringCaseUtils.isUpperHyphenCase("a0")).isFalse();
+    assertThat(StringCaseUtils.isUpperHyphenCase("aa")).isFalse();
+    assertThat(StringCaseUtils.isUpperHyphenCase("aA")).isFalse();
+
+    assertThat(StringCaseUtils.isUpperHyphenCase("A00")).isTrue();
+    assertThat(StringCaseUtils.isUpperHyphenCase("A0a")).isTrue();
+    assertThat(StringCaseUtils.isUpperHyphenCase("A0A")).isFalse();
+
+    assertThat(StringCaseUtils.isUpperHyphenCase("A-A")).isTrue();
+    assertThat(StringCaseUtils.isUpperHyphenCase("A-a")).isFalse();
+    assertThat(StringCaseUtils.isUpperHyphenCase("A-0")).isFalse();
+    assertThat(StringCaseUtils.isUpperHyphenCase("A-AA")).isFalse();
+
+    assertThat(StringCaseUtils.isUpperHyphenCase("AA-A")).isFalse();
+    assertThat(StringCaseUtils.isUpperHyphenCase("AA-a")).isFalse();
+    assertThat(StringCaseUtils.isUpperHyphenCase("AA-0")).isFalse();
+
+    assertThat(StringCaseUtils.isUpperHyphenCase("Aa-A")).isTrue();
+    assertThat(StringCaseUtils.isUpperHyphenCase("Aa-Aa")).isTrue();
+    assertThat(StringCaseUtils.isUpperHyphenCase("Aa-A0")).isTrue();
+
+    assertThat(StringCaseUtils.isUpperHyphenCase("A0-A")).isTrue();
+    assertThat(StringCaseUtils.isUpperHyphenCase("A0-Aa")).isTrue();
+    assertThat(StringCaseUtils.isUpperHyphenCase("A0-A0")).isTrue();
+
+    assertThat(StringCaseUtils.isUpperHyphenCase("A0-a0")).isFalse();
+    assertThat(StringCaseUtils.isUpperHyphenCase("A0-aa")).isFalse();
+    assertThat(StringCaseUtils.isUpperHyphenCase("A0-aA")).isFalse();
+
+    assertThat(StringCaseUtils.isUpperHyphenCase("A0-0")).isFalse();
+    assertThat(StringCaseUtils.isUpperHyphenCase("A0-00")).isFalse();
+    assertThat(StringCaseUtils.isUpperHyphenCase("A0-0a")).isFalse();
+    assertThat(StringCaseUtils.isUpperHyphenCase("A0-0A")).isFalse();
+
+    assertThat(StringCaseUtils.isUpperHyphenCase("_aaA00")).isFalse();
+    assertThat(StringCaseUtils.isUpperHyphenCase("a_aA00")).isFalse();
+    assertThat(StringCaseUtils.isUpperHyphenCase("aa_A00")).isFalse();
+    assertThat(StringCaseUtils.isUpperHyphenCase("aaA_00")).isFalse();
+    assertThat(StringCaseUtils.isUpperHyphenCase("aaA0_0")).isFalse();
+    assertThat(StringCaseUtils.isUpperHyphenCase("aaA00_")).isFalse();
+
+  }
+}
diff --git a/oas-validator/oas-validator-test/pom.xml b/oas-validator/oas-validator-test/pom.xml
new file mode 100755
index 0000000..364b0e4
--- /dev/null
+++ b/oas-validator/oas-validator-test/pom.xml
@@ -0,0 +1,63 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one or more
+  ~ contributor license agreements.  See the NOTICE file distributed with
+  ~ this work for additional information regarding copyright ownership.
+  ~ The ASF licenses this file to You under the Apache License, Version 2.0
+  ~ (the "License"); you may not use this file except in compliance with
+  ~ the License.  You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.apache.servicecomb.toolkit</groupId>
+    <artifactId>oas-validator-parent</artifactId>
+    <version>0.2.0-SNAPSHOT</version>
+    <relativePath>../pom.xml</relativePath>
+  </parent>
+
+  <groupId>org.apache.servicecomb.toolkit</groupId>
+  <artifactId>oas-validator-test</artifactId>
+  <packaging>jar</packaging>
+
+  <dependencies>
+
+    <dependency>
+      <groupId>org.apache.servicecomb.toolkit</groupId>
+      <artifactId>oas-validator-core</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-test</artifactId>
+    </dependency>
+
+  </dependencies>
+
+  <build>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-surefire-plugin</artifactId>
+      </plugin>
+
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-surefire-report-plugin</artifactId>
+      </plugin>
+    </plugins>
+  </build>
+
+</project>
diff --git a/oas-validator/oas-validator-test/src/main/java/org/apache/servicecomb/toolkit/oasv/OasSpecLoader.java b/oas-validator/oas-validator-test/src/main/java/org/apache/servicecomb/toolkit/oasv/OasSpecLoader.java
new file mode 100755
index 0000000..db01a70
--- /dev/null
+++ b/oas-validator/oas-validator-test/src/main/java/org/apache/servicecomb/toolkit/oasv/OasSpecLoader.java
@@ -0,0 +1,71 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv;
+
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.parser.OpenAPIV3Parser;
+import io.swagger.v3.parser.core.models.ParseOptions;
+import io.swagger.v3.parser.core.models.SwaggerParseResult;
+import io.swagger.v3.parser.util.ClasspathHelper;
+import org.apache.commons.collections4.CollectionUtils;
+import org.apache.commons.lang3.StringUtils;
+
+public abstract class OasSpecLoader {
+
+  /**
+   * 解析绝对路径下的文件
+   *
+   * @param classpath
+   * @return
+   */
+  protected final SwaggerParseResult parseAbsolute(String classpath) {
+
+    String content = ClasspathHelper.loadFileFromClasspath(classpath);
+    OpenAPIV3Parser parser = new OpenAPIV3Parser();
+    return parser.readContents(content, null, createParseOptions());
+
+  }
+
+  protected abstract ParseOptions createParseOptions();
+
+  /**
+   * 加载绝对路径下的文件
+   *
+   * @param classpath
+   * @return
+   */
+  protected final OpenAPI loadAbsolute(String classpath) {
+    SwaggerParseResult parseResult = parseAbsolute(classpath);
+    if (CollectionUtils.isNotEmpty(parseResult.getMessages())) {
+      throw new RuntimeException(StringUtils.join(parseResult.getMessages(), ","));
+    }
+    return parseResult.getOpenAPI();
+  }
+
+  /**
+   * 加载相对路径下的文件
+   *
+   * @param fileName
+   * @return
+   */
+  protected final OpenAPI loadRelative(String fileName) {
+    String basePath = getClass().getPackage().getName().replaceAll("\\.", "/");
+    return loadAbsolute(basePath + "/" + fileName);
+  }
+
+}
diff --git a/oas-validator/oas-validator-test/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/test/OasDiffValidatorTestBase.java b/oas-validator/oas-validator-test/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/test/OasDiffValidatorTestBase.java
new file mode 100755
index 0000000..e9ac1c7
--- /dev/null
+++ b/oas-validator/oas-validator-test/src/main/java/org/apache/servicecomb/toolkit/oasv/diffvalidation/test/OasDiffValidatorTestBase.java
@@ -0,0 +1,80 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.diffvalidation.test;
+
+import org.apache.servicecomb.toolkit.oasv.OasSpecLoader;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasSpecDiffValidator;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+public abstract class OasDiffValidatorTestBase extends OasSpecLoader {
+
+  @Autowired
+  protected OasSpecDiffValidator oasSpecDiffValidator;
+
+  protected final OasDiffValidationContext createContext(OpenAPI leftOpenAPI, OpenAPI rightOpenAPI) {
+    OasDiffValidationContext context = new OasDiffValidationContext(leftOpenAPI, rightOpenAPI);
+    return context;
+  }
+
+  protected void initContext(OasDiffValidationContext context) {
+  }
+
+  /**
+   * 两边path一样
+   *
+   * @param error
+   * @param path
+   * @return
+   */
+  protected final OasDiffViolation createViolationBoth(String error, Object[] path) {
+    OasObjectPropertyLocation location = createLocation(path);
+    return new OasDiffViolation(location, location, error);
+  }
+
+  protected final OasDiffViolation createViolationLeft(String error, Object[] leftPath) {
+    return new OasDiffViolation(createLocation(leftPath), null, error);
+  }
+
+  protected final OasDiffViolation createViolationRight(String error, Object[] rightPath) {
+    return new OasDiffViolation(null, createLocation(rightPath), error);
+  }
+
+  protected final OasDiffViolation createViolation(String error, Object[] leftPath, Object[] rightPath) {
+    return new OasDiffViolation(createLocation(leftPath), createLocation(rightPath), error);
+  }
+
+  private final OasObjectPropertyLocation createLocation(Object[] path) {
+    if (path == null) {
+      return null;
+    }
+    OasObjectPropertyLocation loc = OasObjectPropertyLocation.root();
+    for (int i = 0; i < path.length; i = i + 2) {
+      loc = loc.property((String) path[i], (OasObjectType) path[i + 1]);
+    }
+    return loc;
+  }
+
+}
diff --git a/oas-validator/oas-validator-test/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/test/OasValidatorTestBase.java b/oas-validator/oas-validator-test/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/test/OasValidatorTestBase.java
new file mode 100755
index 0000000..b2ddce6
--- /dev/null
+++ b/oas-validator/oas-validator-test/src/main/java/org/apache/servicecomb/toolkit/oasv/validation/test/OasValidatorTestBase.java
@@ -0,0 +1,52 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.validation.test;
+
+import org.apache.servicecomb.toolkit.oasv.OasSpecLoader;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectPropertyLocation;
+import org.apache.servicecomb.toolkit.oasv.common.OasObjectType;
+import org.apache.servicecomb.toolkit.oasv.validation.api.*;
+import io.swagger.v3.oas.models.OpenAPI;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+public abstract class OasValidatorTestBase extends OasSpecLoader {
+
+  @Autowired
+  protected OasSpecValidator oasSpecValidator;
+
+  final protected OasValidationContext createContext(OpenAPI openAPI) {
+    OasValidationContext oasValidationContext = new OasValidationContext(openAPI);
+    initContext(oasValidationContext);
+    return oasValidationContext;
+  }
+
+  protected void initContext(OasValidationContext context) {
+  }
+
+  final protected OasViolation createViolation(String error, Object... path) {
+    OasObjectPropertyLocation loc = OasObjectPropertyLocation.root();
+    for (int i = 0; i < path.length; i = i + 2) {
+      loc = loc.property((String) path[i], (OasObjectType) path[i + 1]);
+    }
+    return new OasViolation(loc, error);
+  }
+
+}
diff --git a/oas-validator/oas-validator-web/pom.xml b/oas-validator/oas-validator-web/pom.xml
new file mode 100755
index 0000000..9a6bb8d
--- /dev/null
+++ b/oas-validator/oas-validator-web/pom.xml
@@ -0,0 +1,130 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one or more
+  ~ contributor license agreements.  See the NOTICE file distributed with
+  ~ this work for additional information regarding copyright ownership.
+  ~ The ASF licenses this file to You under the Apache License, Version 2.0
+  ~ (the "License"); you may not use this file except in compliance with
+  ~ the License.  You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.apache.servicecomb.toolkit</groupId>
+    <artifactId>oas-validator-parent</artifactId>
+    <version>0.2.0-SNAPSHOT</version>
+    <relativePath>../pom.xml</relativePath>
+  </parent>
+
+  <groupId>org.apache.servicecomb.toolkit</groupId>
+  <artifactId>oas-validator-web</artifactId>
+  <version>${parent.version}</version>
+  
+  <properties>
+    <start-class>org.apache.servicecomb.toolkit.oasv.web.Application</start-class>
+    
+  </properties>
+
+  <dependencies>
+
+    <dependency>
+      <groupId>org.projectlombok</groupId>
+      <artifactId>lombok</artifactId>
+      <scope>provided</scope>
+    </dependency>
+
+
+    <dependency>
+      <groupId>org.apache.servicecomb.toolkit</groupId>
+      <artifactId>oas-validator-core-spring</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+    
+    <dependency>
+      <groupId>org.apache.servicecomb.toolkit</groupId>
+      <artifactId>oas-validator-compatibility-spring</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+
+    <dependency>
+      <groupId>org.apache.servicecomb.toolkit</groupId>
+      <artifactId>oas-validator-compliance-spring</artifactId>
+      <version>${project.version}</version>
+    </dependency>
+
+
+
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter</artifactId>
+    </dependency>
+
+    <!-- 微服务 健康监控 -->
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-actuator</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-web</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-thymeleaf</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>org.webjars</groupId>
+      <artifactId>bootstrap</artifactId>
+      <version>4.3.1</version>
+    </dependency>
+
+
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-test</artifactId>
+    </dependency>
+
+  </dependencies>
+
+  <build>
+    <finalName>${project.artifactId}</finalName>
+
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-surefire-plugin</artifactId>
+      </plugin>
+
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-surefire-report-plugin</artifactId>
+      </plugin>
+
+
+
+      <plugin>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-maven-plugin</artifactId>
+        <configuration>
+          <skip>false</skip>
+        </configuration>
+      </plugin>
+
+    </plugins>
+  </build>
+
+</project>
diff --git a/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/Application.java b/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/Application.java
new file mode 100755
index 0000000..6c6ab4c
--- /dev/null
+++ b/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/Application.java
@@ -0,0 +1,48 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.web;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+import org.springframework.web.cors.CorsConfiguration;
+import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
+import org.springframework.web.filter.CorsFilter;
+
+@SpringBootApplication
+public class Application {
+
+  public static void main(String[] args) {
+    SpringApplication.run(Application.class, args);
+  }
+  
+  @Bean
+  public CorsFilter corsFilter() {
+      final CorsConfiguration config = new CorsConfiguration();
+      //config.setAllowCredentials(true);
+      config.addAllowedOrigin("*");
+      config.addAllowedHeader("*");
+      config.addAllowedMethod("*");
+
+      final UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
+      source.registerCorsConfiguration("/api/**", config);
+
+      return new CorsFilter(source);
+  }
+
+}
diff --git a/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/api/controller/CompatibilityController.java b/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/api/controller/CompatibilityController.java
new file mode 100755
index 0000000..99662e1
--- /dev/null
+++ b/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/api/controller/CompatibilityController.java
@@ -0,0 +1,125 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.web.api.controller;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.apache.commons.collections4.CollectionUtils;
+import org.apache.commons.lang3.StringUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.util.MimeTypeUtils;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.ResponseStatus;
+import org.springframework.web.bind.annotation.RestController;
+
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffValidationContext;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasSpecDiffValidator;
+import org.apache.servicecomb.toolkit.oasv.util.DefaultOasSpecSyntaxChecker;
+import org.apache.servicecomb.toolkit.oasv.util.OasSpecSyntaxChecker;
+
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.parser.OpenAPIV3Parser;
+import io.swagger.v3.parser.core.models.ParseOptions;
+import io.swagger.v3.parser.core.models.SwaggerParseResult;
+
+@RestController
+@RequestMapping("/api/compatibility")
+public class CompatibilityController {
+
+  private OasSpecSyntaxChecker oasSpecSyntaxChecker = new DefaultOasSpecSyntaxChecker();
+
+  @Autowired
+  private OasSpecDiffValidator oasSpecDiffValidator;
+
+  @PostMapping(consumes = MimeTypeUtils.TEXT_PLAIN_VALUE, produces = MimeTypeUtils.APPLICATION_JSON_VALUE)
+  @ResponseStatus(value = HttpStatus.OK)
+  public Map<String, Object> validateOpenAPI(@RequestBody String yaml) {
+    
+    Map<String, Object> json = new HashMap<>();
+    
+    json.put("acknowleged", true);
+    json.put("data", doValidate(yaml));
+    
+    return json;
+  }
+
+
+  private ImportError2 doValidate(String yaml) {
+
+    ImportError2 importError = new ImportError2();
+
+    String leftYaml = yaml.split("---\n")[0];
+    String rightYaml = yaml.split("---\n")[1];
+
+    importError.addLeftParseErrors(oasSpecSyntaxChecker.check(leftYaml));
+    importError.addRightParseErrors(oasSpecSyntaxChecker.check(rightYaml));
+
+    if (importError.isNotEmpty()) {
+      return importError;
+    }
+
+    OpenAPI leftOpenAPI = loadByYaml(leftYaml);
+    OpenAPI rightOpenAPI = loadByYaml(rightYaml);
+
+    List<OasDiffViolation> violations = oasSpecDiffValidator
+        .validate(createContext(leftOpenAPI, rightOpenAPI), leftOpenAPI, rightOpenAPI);
+    if (CollectionUtils.isNotEmpty(violations)) {
+      importError.addViolations(violations);
+    }
+    return importError;
+  }
+
+  private OpenAPI loadByYaml(String yaml) {
+    OpenAPIV3Parser parser = new OpenAPIV3Parser();
+    SwaggerParseResult parseResult = parser.readContents(yaml, null, createParseOptions());
+    if (CollectionUtils.isNotEmpty(parseResult.getMessages())) {
+      throw new RuntimeException(StringUtils.join(parseResult.getMessages(), ","));
+    }
+    return parseResult.getOpenAPI();
+  }
+
+  private ParseOptions createParseOptions() {
+
+    ParseOptions parseOptions = new ParseOptions();
+    parseOptions.setResolve(true);
+    parseOptions.setResolveCombinators(true);
+    parseOptions.setResolveFully(true);
+    parseOptions.setFlatten(false);
+    return parseOptions;
+
+  }
+  
+  private OasDiffValidationContext createContext(OpenAPI leftOpenAPI, OpenAPI rightOpenAPI) {
+
+    OasDiffValidationContext context = new OasDiffValidationContext(leftOpenAPI, rightOpenAPI);
+    initContext(context);
+    return context;
+
+  }
+  
+  
+  private void initContext(OasDiffValidationContext context) {
+  }
+
+}
diff --git a/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/api/controller/ComplianceController.java b/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/api/controller/ComplianceController.java
new file mode 100755
index 0000000..8149344
--- /dev/null
+++ b/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/api/controller/ComplianceController.java
@@ -0,0 +1,119 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.web.api.controller;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.apache.commons.collections4.CollectionUtils;
+import org.apache.commons.lang3.StringUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.util.MimeTypeUtils;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.ResponseStatus;
+import org.springframework.web.bind.annotation.RestController;
+
+import org.apache.servicecomb.toolkit.oasv.util.DefaultOasSpecSyntaxChecker;
+import org.apache.servicecomb.toolkit.oasv.util.OasSpecSyntaxChecker;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasSpecValidator;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasValidationContext;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.parser.OpenAPIV3Parser;
+import io.swagger.v3.parser.core.models.ParseOptions;
+import io.swagger.v3.parser.core.models.SwaggerParseResult;
+
+@RestController
+@RequestMapping("/api/compliance")
+public class ComplianceController {
+
+  private OasSpecSyntaxChecker oasSpecSyntaxChecker = new DefaultOasSpecSyntaxChecker();
+
+  @Autowired
+  private OasSpecValidator oasSpecValidator;
+  
+
+  @PostMapping(consumes = MimeTypeUtils.TEXT_PLAIN_VALUE, produces = MimeTypeUtils.APPLICATION_JSON_VALUE)
+  @ResponseStatus(value = HttpStatus.OK)
+  public Map<String, Object> validateOpenAPI(@RequestBody String yaml) {
+
+    ImportError importError = doValidate(yaml);
+    Map<String, Object> json = new HashMap<>();
+    
+    json.put("acknowleged", true);
+    json.put("data", importError);
+    
+    return json;
+  }
+
+
+  private ImportError doValidate(String yaml) {
+
+    ImportError importError = new ImportError();
+    importError.addParseErrors(oasSpecSyntaxChecker.check(yaml));
+    if (importError.isNotEmpty()) {
+      return importError;
+    }
+
+    OpenAPI openAPI = loadByYaml(yaml);
+    List<OasViolation> violations = oasSpecValidator.validate(createContext(openAPI), openAPI);
+    if (CollectionUtils.isNotEmpty(violations)) {
+      importError.addViolations(violations);
+    }
+
+    return importError;
+  }
+
+
+  private OpenAPI loadByYaml(String yaml) {
+    OpenAPIV3Parser parser = new OpenAPIV3Parser();
+    SwaggerParseResult parseResult = parser.readContents(yaml, null, createParseOptions());
+    if (CollectionUtils.isNotEmpty(parseResult.getMessages())) {
+      throw new RuntimeException(StringUtils.join(parseResult.getMessages(), ","));
+    }
+    return parseResult.getOpenAPI();
+  }
+  
+  private ParseOptions createParseOptions() {
+
+    ParseOptions parseOptions = new ParseOptions();
+    parseOptions.setResolve(true);
+    parseOptions.setResolveCombinators(false);
+    parseOptions.setResolveFully(false);
+    parseOptions.setFlatten(false);
+    return parseOptions;
+
+  }
+  
+  private OasValidationContext createContext(OpenAPI openAPI) {
+
+    OasValidationContext oasValidationContext = new OasValidationContext(openAPI);
+    initContext(oasValidationContext);
+    return oasValidationContext;
+
+  }
+  
+  
+  private void initContext(OasValidationContext context) {
+  }
+}
diff --git a/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/api/controller/ImportError.java b/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/api/controller/ImportError.java
new file mode 100755
index 0000000..be1dabc
--- /dev/null
+++ b/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/api/controller/ImportError.java
@@ -0,0 +1,84 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.web.api.controller;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.commons.collections4.CollectionUtils;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+
+public class ImportError {
+
+  private final List<String> parseErrors = new ArrayList<>();
+
+  private final List<OasViolation> violations = new ArrayList<>();
+
+  private final List<OasDiffViolation> diffViolations = new ArrayList<>();
+
+  @JsonIgnore
+  public boolean isNotEmpty() {
+    return CollectionUtils.isNotEmpty(parseErrors)
+        || CollectionUtils.isNotEmpty(violations)
+        || CollectionUtils.isNotEmpty(diffViolations);
+  }
+
+  /**
+   * OAS Spec Yaml parse错误
+   *
+   * @return
+   */
+  public List<String> getParseErrors() {
+    return parseErrors;
+  }
+
+  /**
+   * 违反合规性检查
+   *
+   * @return
+   */
+  public List<OasViolation> getViolations() {
+    return violations;
+  }
+
+  /**
+   * 违反兼容性检查
+   *
+   * @return
+   */
+  public List<OasDiffViolation> getDiffViolations() {
+    return diffViolations;
+  }
+
+  public void addParseErrors(List<String> syntaxErrors) {
+    this.parseErrors.addAll(syntaxErrors);
+  }
+
+  public void addViolations(List<OasViolation> violations) {
+    this.violations.addAll(violations);
+  }
+
+  public void addDiffViolations(List<OasDiffViolation> diffViolations) {
+    this.diffViolations.addAll(diffViolations);
+  }
+
+
+}
diff --git a/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/api/controller/ImportError2.java b/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/api/controller/ImportError2.java
new file mode 100755
index 0000000..202f328
--- /dev/null
+++ b/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/api/controller/ImportError2.java
@@ -0,0 +1,74 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.web.api.controller;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.commons.collections4.CollectionUtils;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import org.apache.servicecomb.toolkit.oasv.diffvalidation.api.OasDiffViolation;
+import org.apache.servicecomb.toolkit.oasv.validation.api.OasViolation;
+
+public class ImportError2 {
+
+  private final List<String> leftParseErrors = new ArrayList<>();
+
+  private final List<String> rightParseErrors = new ArrayList<>();
+
+  private final List<OasDiffViolation> violations = new ArrayList<>();
+
+  @JsonIgnore
+  public boolean isNotEmpty() {
+    return CollectionUtils.isNotEmpty(leftParseErrors)
+        || CollectionUtils.isNotEmpty(rightParseErrors)
+        || CollectionUtils.isNotEmpty(violations);
+  }
+
+  public List<String> getLeftParseErrors() {
+    return leftParseErrors;
+  }
+
+  public List<String> getRightParseErrors() {
+    return rightParseErrors;
+  }
+
+
+  /**
+   * 违反兼容性检查
+   *
+   * @return
+   */
+  public List<OasDiffViolation> getViolations() {
+    return violations;
+  }
+
+  public void addLeftParseErrors(List<String> syntaxErrors) {
+    this.leftParseErrors.addAll(syntaxErrors);
+  }
+
+  public void addRightParseErrors(List<String> syntaxErrors) {
+    this.rightParseErrors.addAll(syntaxErrors);
+  }
+
+
+  public void addViolations(List<OasDiffViolation> diffViolations) {
+    this.violations.addAll(diffViolations);
+  }
+}
diff --git a/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/page/controller/EditorController.java b/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/page/controller/EditorController.java
new file mode 100755
index 0000000..c964051
--- /dev/null
+++ b/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/page/controller/EditorController.java
@@ -0,0 +1,36 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.web.page.controller;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@Controller
+@RequestMapping("/editor")
+public class EditorController {
+  
+  @GetMapping()
+  public String index() {
+    
+    
+    
+    return "editor/index";
+  }
+
+}
diff --git a/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/page/controller/IndexController.java b/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/page/controller/IndexController.java
new file mode 100755
index 0000000..a8a05e4
--- /dev/null
+++ b/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/page/controller/IndexController.java
@@ -0,0 +1,34 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.web.page.controller;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@Controller
+@RequestMapping("/")
+public class IndexController {
+  
+  @GetMapping
+  public String index() {
+    
+    return "index";
+  }
+
+}
diff --git a/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/page/controller/ValidatorController.java b/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/page/controller/ValidatorController.java
new file mode 100755
index 0000000..862443f
--- /dev/null
+++ b/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/page/controller/ValidatorController.java
@@ -0,0 +1,52 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.web.page.controller;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@Controller
+@RequestMapping("/validator")
+public class ValidatorController {
+
+  @GetMapping()
+  public String index() {
+    
+    
+    
+    return "validator/index";
+  }
+
+  @GetMapping(path = "/compliance")
+  public String complianceValidator() {
+    
+    
+    
+    return "validator/compliance";
+  }
+
+  @GetMapping(path = "/compatibility")
+  public String compatibilityValidator() {
+    
+    
+    
+    return "validator/compatibility";
+  }
+
+}
diff --git a/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/page/controller/ViewerController.java b/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/page/controller/ViewerController.java
new file mode 100755
index 0000000..484070e
--- /dev/null
+++ b/oas-validator/oas-validator-web/src/main/java/org/apache/servicecomb/toolkit/oasv/web/page/controller/ViewerController.java
@@ -0,0 +1,36 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.servicecomb.toolkit.oasv.web.page.controller;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@Controller
+@RequestMapping("/viewer")
+public class ViewerController {
+  
+  @GetMapping()
+  public String index() {
+    
+    
+    
+    return "viewer/index";
+  }
+
+}
diff --git a/oas-validator/oas-validator-web/src/main/resources/application.properties b/oas-validator/oas-validator-web/src/main/resources/application.properties
new file mode 100755
index 0000000..bd84ab3
--- /dev/null
+++ b/oas-validator/oas-validator-web/src/main/resources/application.properties
@@ -0,0 +1,30 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+server.port=8080
+server.context-path=
+
+
+#thymeleaf
+
+spring.thymeleaf.cache=false
+
+#spring.thymeleaf.prefix=classpath:/templates/
+#spring.thymeleaf.suffix=.html
+#spring.thymeleaf.check-template-location=true
+#spring.thymeleaf.encoding=UTF-8
+#spring.thymeleaf.mode=HTML5
diff --git a/oas-validator/oas-validator-web/src/main/resources/samples/petstore-openapi-wrong.yaml b/oas-validator/oas-validator-web/src/main/resources/samples/petstore-openapi-wrong.yaml
new file mode 100755
index 0000000..bf7bfc4
--- /dev/null
+++ b/oas-validator/oas-validator-web/src/main/resources/samples/petstore-openapi-wrong.yaml
@@ -0,0 +1,125 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements.  See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License.  You may obtain a copy of the License at
+##
+##      http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+servers:
+  - url: http://petstore.swagger.io/v1
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          schema:
+            type: integer
+            format: int32
+      responses:
+        '200':
+          description: A paged array of pets
+          headers:
+            x-next:
+              description: A link to the next page of responses
+              schema:
+                type: string
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+    post:
+      summary: Create a pet
+      operationId: createPets
+      tags:
+        - pets
+      responses:
+        '201':
+          description: Null response
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+  /pets/{petId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: petId
+          in: path
+          required: true
+          description: The id of the pet to retrieve
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Pets"
+        default:
+          description: unexpected error
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/Error"
+components:
+  schemas:
+    Pet:
+      required:
+        - id
+        - name
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+        tag:
+          type: string
+    Pets:
+      type: array
+      items:
+        $ref: "#/components/schemas/Pet"
+    Error:
+      required:
+        - code
+        - message
+      properties:
+        code:
+          type: integer
+          format: int32
+        message:
+          type: string
diff --git a/oas-validator/oas-validator-web/src/main/resources/static/doc/validator.html b/oas-validator/oas-validator-web/src/main/resources/static/doc/validator.html
new file mode 100755
index 0000000..5aeffc5
--- /dev/null
+++ b/oas-validator/oas-validator-web/src/main/resources/static/doc/validator.html
@@ -0,0 +1,587 @@
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one or more
+  ~ contributor license agreements.  See the NOTICE file distributed with
+  ~ this work for additional information regarding copyright ownership.
+  ~ The ASF licenses this file to You under the Apache License, Version 2.0
+  ~ (the "License"); you may not use this file except in compliance with
+  ~ the License.  You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+<!doctype html>
+<html>
+<head>
+<meta charset='UTF-8'><meta name='viewport' content='width=device-width initial-scale=1'>
+<title>README</title><link href='https://fonts.loli.net/css?family=Open+Sans:400italic,700italic,700,400&subset=latin,latin-ext' rel='stylesheet' type='text/css' /><style type='text/css'>html {overflow-x: initial !important;}:root { --bg-color: #ffffff; --text-color: #333333; --select-text-bg-color: #B5D6FC; --select-text-font-color: auto; --monospace: "Lucida Console",Consolas,"Courier",monospace; }
+html { font-size: 14px; background-color: var(--bg-color); color: var(--text-color); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; -webkit-font-smoothing: antialiased; }
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+iframe { margin: auto; }
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+a:active, a:hover { outline: 0px; }
+.in-text-selection, ::selection { text-shadow: none; background: var(--select-text-bg-color); color: var(--select-text-font-color); }
+#write { margin: 0px auto; height: auto; width: inherit; word-break: normal; word-wrap: break-word; position: relative; white-space: normal; overflow-x: visible; padding-top: 40px; }
+#write.first-line-indent p { text-indent: 2em; }
+#write.first-line-indent li p, #write.first-line-indent p * { text-indent: 0px; }
+#write.first-line-indent li { margin-left: 2em; }
+.for-image #write { padding-left: 8px; padding-right: 8px; }
+body.typora-export { padding-left: 30px; padding-right: 30px; }
+.typora-export .footnote-line, .typora-export li, .typora-export p { white-space: pre-wrap; }
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+  body.typora-export { padding-left: 0px; padding-right: 0px; }
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+#write .md-fences.mock-cm { white-space: pre-wrap; }
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+#write.fences-no-line-wrapping .md-fences.mock-cm { white-space: pre; overflow-x: auto; }
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+  html.blink-to-pdf { font-size: 13px; }
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+p > .md-image:only-child:not(.md-img-error) img, p > img:only-child { display: block; margin: auto; }
+p > .md-image:only-child { display: inline-block; width: 100%; }
+#write .MathJax_Display { margin: 0.8em 0px 0px; }
+.md-math-block { width: 100%; }
+.md-math-block:not(:empty)::after { display: none; }
+[contenteditable="true"]:active, [contenteditable="true"]:focus { outline: 0px; box-shadow: none; }
+.md-task-list-item { position: relative; list-style-type: none; }
+.task-list-item.md-task-list-item { padding-left: 0px; }
+.md-task-list-item > input { position: absolute; top: 0px; left: 0px; margin-left: -1.2em; margin-top: calc(1em - 10px); border: none; }
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+.md-toc-h5 .md-toc-inner { margin-left: 8em; }
+.md-toc-h6 .md-toc-inner { margin-left: 10em; }
+@media screen and (max-width: 48em) { 
+  .md-toc-h3 .md-toc-inner { margin-left: 3.5em; }
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+  .md-toc-h5 .md-toc-inner { margin-left: 6.5em; }
+  .md-toc-h6 .md-toc-inner { margin-left: 8em; }
+}
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+.MathJax_SVG .MJX-monospace { font-family: var(--monospace); }
+.MathJax_SVG .MJX-sans-serif { font-family: sans-serif; }
+.MathJax_SVG { display: inline; font-style: normal; font-weight: 400; line-height: normal; zoom: 90%; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; }
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+
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+<div  id='write'  class = 'is-mac'><h1><a name='header-n0' class='md-header-anchor '></a>OAS Validator</h1><p>OpenAPI V3 Spec校验工具。</p><div class='md-toc' mdtype='toc'><p class="md-toc-content"><span class="md-toc-item md-toc-h1" data-ref="n0"><a class="md-toc-inner" href="#header-n0">OAS Validator</a></span><span class="md-toc-item md-toc-h2" data-ref="n4"><a class="md-toc-inner" href="#header-n4">项目结构</a></span><span class="md-toc-item md-toc-h2" data-ref="n20"><a class="md-toc-inner" href="#header-n20">合规性校验</a></span><span class="md-toc-item md-toc-h3" data-ref="n22"><a class="md-toc-inner" href="#header-n22">一些字符串匹配规则</a></span><span class="md-toc-item md-toc-h3" data-ref="n30"><a class="md-toc-inner" href="#header-n30">OpenAPI Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n46"><a class="md-toc-inner" href="#header-n46">Info Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n51"><a class="md-toc-inner" href="#header-n51">Tag Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n60"><a class="md-toc-inner" href="#header-n60">Paths Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n68"><a class="md-toc-inner" href="#header-n68">Path Item Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n75"><a class="md-toc-inner" href="#header-n75">Operation Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n92"><a class="md-toc-inner" href="#header-n92">Parameter Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n108"><a class="md-toc-inner" href="#header-n108">Request Body Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n115"><a class="md-toc-inner" href="#header-n115">Media Type Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n122"><a class="md-toc-inner" href="#header-n122">Responses Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n127"><a class="md-toc-inner" href="#header-n127">Response Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n139"><a class="md-toc-inner" href="#header-n139">Schema Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n149"><a class="md-toc-inner" href="#header-n149">Encoding Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n157"><a class="md-toc-inner" href="#header-n157">Header Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n166"><a class="md-toc-inner" href="#header-n166">Components Object doc</a></span><span class="md-toc-item md-toc-h2" data-ref="n200"><a class="md-toc-inner" href="#header-n200">兼容性检查</a></span><span class="md-toc-item md-toc-h3" data-ref="n210"><a class="md-toc-inner" href="#header-n210">Paths Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n218"><a class="md-toc-inner" href="#header-n218">Path Item Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n223"><a class="md-toc-inner" href="#header-n223">Operation Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n241"><a class="md-toc-inner" href="#header-n241">Parameter Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n261"><a class="md-toc-inner" href="#header-n261">Request Body Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n271"><a class="md-toc-inner" href="#header-n271">Media Type Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n281"><a class="md-toc-inner" href="#header-n281">Responses Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n290"><a class="md-toc-inner" href="#header-n290">Response Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n303"><a class="md-toc-inner" href="#header-n303">Schema Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n312"><a class="md-toc-inner" href="#header-n312">用做请求时</a></span><span class="md-toc-item md-toc-h3" data-ref="n372"><a class="md-toc-inner" href="#header-n372">用做响应时</a></span><span class="md-toc-item md-toc-h3" data-ref="n426"><a class="md-toc-inner" href="#header-n426">Encoding Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n443"><a class="md-toc-inner" href="#header-n443">Header Object doc</a></span><span class="md-toc-item md-toc-h3" data-ref="n448"><a class="md-toc-inner" href="#header-n448">Components Object doc</a></span></p></div><h2><a name='header-n4' class='md-header-anchor '></a>项目结构</h2><ul><li>oas-validator-core,核心API及骨架实现</li><li>oas-validator-core-spring,骨架的Spring Boot Autoconfiguration</li><li>oas-validator-test,核心API的测试帮助类</li><li>oas-validator-compliance,合规性校验实现</li><li>oas-validator-compliance-spring,合规性校验的Spring Boot Autoconfiguration</li><li>oas-validator-compatibility,兼容性校验实现</li><li>oas-validator-compatibility-spring,兼容性校验实现的Spring Boot Autoconfiguration</li></ul><h2><a name='header-n20' class='md-header-anchor '></a>合规性校验</h2><p>OAS必须符合<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md' target='_blank'>OAS 3.0.2规范</a>(比如属性的名称、REQUIED要求)。除此之外则是我们自己的定义的合规性检查。</p><h3><a name='header-n22' class='md-header-anchor '></a>一些字符串匹配规则</h3><ul><li><a name="lower-camel-case"></a>Lower Camel Case:首字母小写的驼峰,对应的正则<code>^[a-z]+((\d)|([A-Z0-9][a-z0-9]+))*([A-Z])?$</code></li><li><a name="upper-camel-case"></a>Upper Camel Case:首字母大写的驼峰,对应的正则<code>^[A-Z]([a-z0-9]+[A-Z]?)*$</code></li><li><a name="upper-hyphen-case"></a>Upper Hyphen Case:单词首字母大写,多个单词用<code>-</code>连接,比如<code>Content-Type</code>、<code>Accept</code>、<code>X-Rate-Limit-Limit</code>。对应的正则:<code>^([A-Z][a-z0-9]*-)*([A-Z][a-z0-9]*)$</code></li></ul><h3><a name='header-n30' class='md-header-anchor '></a>OpenAPI Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#openapi-object' target='_blank'>doc</a></h3><p><a name="openapi-compliance"></a></p><ul><li><p><code>openapi</code>属性必须为3.0.x且&gt;=3.0.2</p></li><li><p><code>info</code>属性见<a href='#info-compliance'>Info Object合规性检查</a></p></li><li><p><code>paths</code>属性,必须提供见<a href='#paths-compliance'>Paths Object合规性检查</a></p></li><li><p><code>components</code>属性见<a href='#components-compliance'>Components Object合规性检查</a></p></li><li><p><code>tags</code>属性,至少提供一个<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#tagObject' target='_blank'>Tag Object</a></p><ul><li>见<a href='#tag-compliance'>Tag Object合规性检查</a></li></ul></li></ul><h3><a name='header-n46' class='md-header-anchor '></a>Info Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#infoObject' target='_blank'>doc</a></h3><p><a name="info-compliance"></a></p><ul><li><code>description</code>属性,必须填写</li></ul><h3><a name='header-n51' class='md-header-anchor '></a>Tag Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#tagObject' target='_blank'>doc</a></h3><p><a name="tag-compliance"></a></p><ul><li><code>name</code>属性,必须是<a href='#upper-camel-case'>Upper Camel Case</a></li><li><code>description</code>属性,必须填写</li><li>不得存在<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#operationObject' target='_blank'>Operation Object</a>没有引用过的tag</li></ul><h3><a name='header-n60' class='md-header-anchor '></a>Paths Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#paths-object' target='_blank'>doc</a></h3><p><a name="paths-compliance"></a></p><ul><li><p>path必须是<a href='#lower-camel-case'>Lower Camel Case</a>,包括<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#path-templating' target='_blank'>Path Templating</a>中的变量</p><ul><li>见<a href='#path-item-compliance'>Path Item Object合规性检查</a></li></ul></li></ul><h3><a name='header-n68' class='md-header-anchor '></a>Path Item Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#pathItemObject' target='_blank'>doc</a></h3><p><a name="path-item-compliance"></a></p><ul><li><code>get/post/put/delete/...</code>属性,见<a href='operation-compliance'>Operation Object合规性检查</a></li><li><code>parameters</code>属性,见<a href='#parameter-compliance'>Parameter Object合规性检查</a></li></ul><h3><a name='header-n75' class='md-header-anchor '></a>Operation Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#operationObject' target='_blank'>doc</a></h3><p><a name="operation-compliance"></a></p><ul><li><code>summary</code>属性、必须填写</li><li><code>operationId</code>属性,且<a href='#lower-camel-case'>Lower Camel Case</a></li><li><code>parameters</code>属性,见<a href='#parameter-compliance'>Parameter Object合规性检查</a></li><li><code>requestBody</code>属性,见<a href='#request-body-compliance'>Request Body Object合规性检查</a></li><li><code>responses</code>属性,见<a href='#responses-compliance'>Responses Object合规性检查</a></li><li><code>tags</code>属性,且只能写一个tag,且必须在<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#openapi-object' target='_blank'>OpenAPI Object</a> 的 <code>tags</code>属性里所定义的范围内</li><li><code>servers</code>属性,不允许提供</li></ul><h3><a name='header-n92' class='md-header-anchor '></a>Parameter Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#parameterObject' target='_blank'>doc</a></h3><p><a name="parameter-compliance"></a></p><ul><li><p><code>description</code>属性,必须填写</p></li><li><p><code>name</code>属性</p><ul><li>如果<code>in</code>为path、query、cookie,则那么必须是<a href='#lower-camel-case'>Lower Camel Case</a></li><li>如果<code>in</code>为header,则那么必须是<a href='#upper-hyphen-case'>Upper Hyphen Case</a></li></ul></li><li><p><code>schema</code>属性,见<a href='#schema-compliance'>Schema Object合规性检查</a></p></li><li><p><code>content</code>属性,见<a href='#media-type-compliance'>Media Type Object合规性检查</a></p></li></ul><h3><a name='header-n108' class='md-header-anchor '></a>Request Body Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#requestBodyObject' target='_blank'>doc</a></h3><p><a name="request-body-compliance"></a></p><ul><li><code>description</code>属性,必须填写</li><li><code>content</code>属性,见<a href='#media-type-compliance'>Media Type Object合规性检查</a></li></ul><h3><a name='header-n115' class='md-header-anchor '></a>Media Type Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#media-type-object' target='_blank'>doc</a></h3><p><a name="media-type-compliance"></a></p><ul><li><code>schema</code>属性,必须填写。见<a href='#schema-compliance'>Schema Object合规性检查</a></li><li><code>encoding</code>属性,见<a href='#encoding-compliance'>Encoding Object合规性检查</a></li></ul><h3><a name='header-n122' class='md-header-anchor '></a>Responses Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#responsesObject' target='_blank'>doc</a></h3><p><a name="responses-compliance"></a></p><ul><li>见<a href='#response-compliance'>Response Object合规性检查</a></li></ul><h3><a name='header-n127' class='md-header-anchor '></a>Response Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#response-object' target='_blank'>doc</a></h3><p><a name="response-compliance"></a></p><ul><li><p><code>description</code>属性,必须填写</p></li><li><p><code>headers</code>属性,name(<code>headers</code>的key)必须是<a href='#upper-hyphen-case'>Upper Hyphen Case</a></p><ul><li>见<a href='#header-compliance'>Header Object合规性检查</a></li></ul></li><li><p><code>content</code>属性,见<a href='#media-type-compliance'>Media Type Object合规性检查</a></p></li></ul><h3><a name='header-n139' class='md-header-anchor '></a>Schema Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#schemaObject' target='_blank'>doc</a></h3><p><a name="schema-compliance"></a></p><ul><li><p><code>title</code>属性,如果上级是<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#schemaObject' target='_blank'>Schema Object</a>或<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#components-object' target='_blank'>Components Object</a>,那么必须填写</p></li><li><p><code>properties</code>属性,name(<code>properties</code>的key)必须是<a href='#lower-camel-case'>Lower Camel Case</a></p><ul><li>Sub Schema见<a href='#schema-compliance'>Schema Object合规性检查</a></li></ul></li></ul><h3><a name='header-n149' class='md-header-anchor '></a>Encoding Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#encodingObject' target='_blank'>doc</a></h3><p><a name="encoding-compliance"></a></p><ul><li><p><code>headers</code>属性,name(<code>headers</code>的key)必须是<a href='#upper-hyphen-case'>Upper Hyphen Case</a></p><ul><li>见<a href='#header-compliance'>Header Object合规性检查</a></li></ul></li></ul><h3><a name='header-n157' class='md-header-anchor '></a>Header Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#header-object' target='_blank'>doc</a></h3><p><a name="header-compliance"></a></p><ul><li><code>description</code>属性,必须填写</li><li><code>schema</code>属性,见<a href='#schema-compliance'>Schema Object合规性检查</a></li><li><code>content</code>属性,见<a href='#media-type-compliance'>Media Type Object合规性检查</a></li></ul><h3><a name='header-n166' class='md-header-anchor '></a>Components Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#components-object' target='_blank'>doc</a></h3><p><a name="components-compliance"></a></p><ul><li><p><code>schemas</code>属性,name必须是<a href='#upper-camel-case'>Upper Camel Case</a></p><ul><li>见<a href='#schema-compliance'>Schema Object合规性检查</a></li></ul></li><li><p><code>responses</code>属性,name必须是<a href='#upper-camel-case'>Upper Camel Case</a></p><ul><li>见<a href='#response-compliance'>Response Object合规性检查</a></li></ul></li><li><p><code>parameters</code>属性,name必须是<a href='#upper-camel-case'>Upper Camel Case</a></p><ul><li>见<a href='#parameter-compliance'>Parameter Object合规性检查</a></li></ul></li><li><p><code>examples</code>属性,name必须是<a href='#upper-camel-case'>Upper Camel Case</a></p></li><li><p><code>requestBodies</code>属性,name必须是<a href='#upper-camel-case'>Upper Camel Case</a></p><ul><li>见<a href='#request-body-compliance'>Request Body合规性检查</a></li></ul></li><li><p><code>headers</code>属性,name必须是<a href='#upper-hyphen-case'>Upper Hyphen Case</a></p><ul><li>见<a href='#header-compliance'>Header合规性检查</a></li></ul></li><li><p><code>links</code>属性,name必须是<a href='#upper-camel-case'>Upper Camel Case</a></p></li><li><p><code>callbacks</code>属性,name必须是<a href='#upper-camel-case'>Upper Camel Case</a></p></li></ul><h2><a name='header-n200' class='md-header-anchor '></a>兼容性检查</h2><p>对新旧两个版本的OAS做兼容性检查。</p><p>OAS可以使用<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#reference-object' target='_blank'>Reference Object</a>来描述Spec,两个不同的OAS会出现描述不同但语义相同的情况。比如下面的旧OAS没有使用<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#reference-object' target='_blank'>Reference Object</a>,而新OAS则使用了的情况:</p><p>旧OAS</p><pre spellcheck="false" class="md-fences md-end-block ty-contain-cm modeLoaded" lang="yaml" style="page-break-inside: unset;"><div class="CodeMirror cm-s-inner CodeMirror-wrap" lang="yaml"><div style="overflow: hidden; position: relative; width: 3px; height: 0px; top: 0px; left: 8px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"></textarea></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"></div><div class="CodeMirror-gutter-filler" cm-not-content="true"></div><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"></div><div class="CodeMirror-measure"></div><div style="position: relative; z-index: 1;"></div><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"></div><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom">openapi</span><span class="cm-meta">: </span><span class="cm-string">"3.0.0"</span></span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom">info</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom">  version</span><span class="cm-meta">: </span><span class="cm-number">1.0.0</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom">  title</span><span class="cm-meta">: </span>Swagger Petstore</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom">  license</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp;  name</span><span class="cm-meta">: </span>MIT</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom">servers</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">  - </span><span class="cm-atom">url</span><span class="cm-meta">: </span>http<span class="cm-meta">:</span>//petstore.swagger.io/v1</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom">paths</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom">  /pets</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp;  post</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp;  summary</span><span class="cm-meta">: </span>List all pets</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp;  operationId</span><span class="cm-meta">: </span>listPets</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp;  requestBody</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp; &nbsp;  content</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp; &nbsp; &nbsp;  application/json</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  schema</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  type</span><span class="cm-meta">: </span>array</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  items</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  type</span><span class="cm-meta">: </span>object</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  properties</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  Foo</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  type</span><span class="cm-meta">: </span>string</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp;  responses</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp; &nbsp;  '200'</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp; &nbsp; &nbsp;  description</span><span class="cm-meta">: </span>A paged array of pets</span></pre></div></div></div></div></div><div style="position: absolute; height: 0px; width: 1px; border-bottom-width: 0px; border-bottom-style: solid; border-bottom-color: transparent; top: 572px;"></div><div class="CodeMirror-gutters" style="display: none; height: 572px;"></div></div></div></pre><p>新OAS</p><pre spellcheck="false" class="md-fences md-end-block ty-contain-cm modeLoaded" lang="yaml" style="page-break-inside: unset;"><div class="CodeMirror cm-s-inner CodeMirror-wrap" lang="yaml"><div style="overflow: hidden; position: relative; width: 3px; height: 0px; top: 0px; left: 8px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"></textarea></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"></div><div class="CodeMirror-gutter-filler" cm-not-content="true"></div><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre><span>xxxxxxxxxx</span></pre></div><div class="CodeMirror-measure"></div><div style="position: relative; z-index: 1;"></div><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"></div><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom">paths</span><span class="cm-meta">:</span></span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom">  /pets</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp;  post</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp;  operationId</span><span class="cm-meta">: </span>listPets</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp;  requestBody</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp; &nbsp;  content</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp; &nbsp; &nbsp;  application/json</span><span class="cm-meta">: </span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  schema</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  $ref</span><span class="cm-meta">: </span><span class="cm-string">'#/components/schemas/Foo'</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp;  responses</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp; &nbsp;  '200'</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp; &nbsp; &nbsp;  description</span><span class="cm-meta">: </span>A paged array of pets</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom">components</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom">  schemas</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp;  Foo</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp;  type</span><span class="cm-meta">: </span>array</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp;  items</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp; &nbsp;  type</span><span class="cm-meta">: </span>object</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp; &nbsp;  properties</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp; &nbsp; &nbsp;  Foo</span><span class="cm-meta">:</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-atom"> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;  type</span><span class="cm-meta">: </span>string</span></pre></div></div></div></div></div><div style="position: absolute; height: 0px; width: 1px; border-bottom-width: 0px; border-bottom-style: solid; border-bottom-color: transparent; top: 462px;"></div><div class="CodeMirror-gutters" style="display: none; height: 462px;"></div></div></div></pre><p>因此在检查兼容性的时候会将新旧OAS的<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#reference-object' target='_blank'>Reference Object</a>做解析,然后再检查,下面是一段<a href='https://github.com/swagger-api/swagger-parser' target='_blank'>swagger-parser</a>的例子:</p><pre spellcheck="false" class="md-fences md-end-block ty-contain-cm modeLoaded" lang="java"><div class="CodeMirror cm-s-inner CodeMirror-wrap" lang="java"><div style="overflow: hidden; position: relative; width: 3px; height: 0px; top: 0px; left: 8px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"></textarea></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"></div><div class="CodeMirror-gutter-filler" cm-not-content="true"></div><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><span><span>​</span>x</span></div><div class="CodeMirror-measure"></div><div style="position: relative; z-index: 1;"></div><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"></div><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">OpenAPIV3Parser</span> <span class="cm-variable">parser</span> <span class="cm-operator">=</span> <span class="cm-keyword">new</span> <span class="cm-variable">OpenAPIV3Parser</span>();</span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="">​</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">ParseOptions</span> <span class="cm-variable">parseOptions</span> <span class="cm-operator">=</span> <span class="cm-keyword">new</span> <span class="cm-variable">ParseOptions</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">parseOptions</span>.<span class="cm-variable">setResolve</span>(<span class="cm-atom">true</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">parseOptions</span>.<span class="cm-variable">setResolveCombinators</span>(<span class="cm-atom">true</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">parseOptions</span>.<span class="cm-variable">setResolveFully</span>(<span class="cm-atom">true</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">parseOptions</span>.<span class="cm-variable">setFlatten</span>(<span class="cm-atom">false</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="">​</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">SwaggerParseResult</span> <span class="cm-variable">parseResult</span> <span class="cm-operator">=</span> <span class="cm-variable">parser</span>.<span class="cm-variable">readContents</span>(<span class="cm-variable">content</span>, <span class="cm-atom">null</span>, <span class="cm-variable">parseOptions</span>);</span></pre></div></div></div></div></div><div style="position: absolute; height: 0px; width: 1px; border-bottom-width: 0px; border-bottom-style: solid; border-bottom-color: transparent; top: 198px;"></div><div class="CodeMirror-gutters" style="display: none; height: 198px;"></div></div></div></pre><p>因此,检查下来如果发现不兼容,那么所报告的位置会和原文档有所不同。</p><h3><a name='header-n210' class='md-header-anchor '></a>Paths Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#paths-object' target='_blank'>doc</a></h3><p><a name="paths-compatibility"></a></p><ul><li><p>新OAS必须包含旧OAS的所有的<code>path</code>,如果<code>path</code>使用了<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#path-templating' target='_blank'>Path Templating</a>,只要变量名发生了变化,那么即使语义上相同也会被认为不同,比如<code>/pets/{foo}</code>和<code>/pets/{bar}</code>会被认定为不同。</p><ul><li>见<a href='#path-item-compatibility'>Path Item Object兼容性检查</a></li></ul></li></ul><h3><a name='header-n218' class='md-header-anchor '></a>Path Item Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#pathItemObject' target='_blank'>doc</a></h3><p><a name="path-item-compatibility"></a></p><ul><li>新OAS必须包含旧OAS的所有的get/put/post/delete/...<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#operationObject' target='_blank'>Operation Object</a></li></ul><h3><a name='header-n223' class='md-header-anchor '></a>Operation Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#operationObject' target='_blank'>doc</a></h3><p><a name="operation-compatibility"></a></p><ul><li><p><code>operationId</code>属性,新旧OAS必须完全一致。</p></li><li><p><code>parameters</code>属性,对它检查须在考虑到<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#user-content-pathitemparameters' target='_blank'>Path Item Object parameters属性</a>的情况下进行:</p><ul><li>新OAS可以新增<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#parameterObject' target='_blank'>Parameter Object</a>,但是新增的<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#parameterObject' target='_blank'>Parameter Object</a>的<code>required</code>属性必须为<code>false</code></li><li>新OAS可以删除<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#parameterObject' target='_blank'>Parameter Object</a></li><li>针对单个<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#parameterObject' target='_blank'>Parameter Object</a>的修改的检查见<a href='#parameter-compatibility'>Parameter Object兼容性检查</a>(在同一个<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#operationObject' target='_blank'>Operation Object</a>下<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#parameterObject' target='_blank'>Parameter Object</a>依靠<code>name</code>和<code>in</code>两个属性作为ID)。</li></ul></li><li><p><code>requestBody</code>属性,见<a href='#request-body-compatibility'>Request Body Object兼容性检查</a></p></li><li><p><code>responses</code>属性,见<a href='#responses-compatibility'>Responses Object兼容性检查</a></p></li></ul><h3><a name='header-n241' class='md-header-anchor '></a>Parameter Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#parameterObject' target='_blank'>doc</a></h3><p><a name="parameter-compatibility"></a></p><ul><li><p><code>required</code>属性,只允许<code>true(旧) -&gt; false(新)</code></p></li><li><p><code>allowEmptyValue</code>属性,只允许<code>false(旧) -&gt; true(新)</code>的变化</p></li><li><p><code>style</code>属性,新旧OAS必须保持一致</p></li><li><p><code>explode</code>属性,新旧OAS必须保持一致</p></li><li><p><code>allowReserved</code>属性,只允许<code>false(旧) -&gt; true(新)</code>的变化</p></li><li><p><code>schema</code>属性,见<a href='#schema-compatibility'>Schema Object兼容性检查</a></p></li><li><p><code>content</code>属性,新OAS必须包含旧OAS的所有media type(<code>content</code>的key),且不能新增media type</p><ul><li>见<a href='#media-type-compatibility'>Media Type Object兼容性检查</a></li></ul></li></ul><h3><a name='header-n261' class='md-header-anchor '></a>Request Body Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#requestBodyObject' target='_blank'>doc</a></h3><p><a name="request-body-compatibility"></a></p><ul><li><p><code>content</code>属性,新OAS必须包含旧OAS的所有media type(<code>content</code>的key)</p><ul><li>见<a href='#media-type-compatibility'>Media Type Object兼容性检查</a></li></ul></li><li><p><code>required</code>属性,只允许<code>true(旧) -&gt; false(新)</code>的变化</p></li></ul><h3><a name='header-n271' class='md-header-anchor '></a>Media Type Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#media-type-object' target='_blank'>doc</a></h3><p><a name="media-type-compatibility"></a></p><ul><li><p><code>schema</code>属性,见<a href='#schema-compatibility'>Schema Object兼容性检查</a></p></li><li><p><code>encoding</code>属性,该属性仅适用于<code>requestBody</code>,因此新旧OAS的property name(<code>encoding</code>的key)必须完全一致</p><ul><li>见<a href='#encoding-compatibility'>Encoding Object兼容性检查</a></li></ul></li></ul><h3><a name='header-n281' class='md-header-anchor '></a>Responses Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#responsesObject' target='_blank'>doc</a></h3><p><a name="responses-compatibility"></a></p><ul><li><code>default</code>属性,如果旧OAS没有定义<code>default</code>,那么新OAS也不能定义<code>default</code>。</li><li><code>{Http Status Code}</code>属性,新OAS不允许新增。</li><li>见<a href='#response-compatibility'>Response Object兼容性检查</a></li></ul><h3><a name='header-n290' class='md-header-anchor '></a>Response Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#response-object' target='_blank'>doc</a></h3><p><a name="response-compatibility"></a></p><ul><li><p><code>headers</code>属性,新OAS必须包含旧OAS的所有header name(<code>headers</code>的key),可以新增header name</p><ul><li><a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#header-object' target='_blank'>Header Object</a>见<a href='#header-compatibility'>Header Object兼容性检查</a></li></ul></li><li><p><code>content</code>属性,新OAS必须包含旧OAS的所有media type(<code>content</code>的key),可以新增media type</p><ul><li><a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#media-type-object' target='_blank'>Media Type Object</a>见<a href='#media-type-compatibility'>Media Type Object兼容性检查</a></li></ul></li></ul><h3><a name='header-n303' class='md-header-anchor '></a>Schema Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#schemaObject' target='_blank'>doc</a></h3><p><a name="schema-compatibility"></a></p><p>OAS中定义,Schema Object可以直接或间接用在:</p><ul><li>请求类:<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#parameterObject' target='_blank'>Parameter Object</a>、<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#requestBodyObject' target='_blank'>Request Body Object</a>、<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#header-object' target='_blank'>Header Object</a></li><li>响应类:<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#header-object' target='_blank'>Header Object</a>、<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#response-object' target='_blank'>Response Object</a></li></ul><p>不同用途的兼容性检查规则有所不同。</p><h3><a name='header-n312' class='md-header-anchor '></a>用做请求时</h3><p>原则上,当Schema Object用在请求时,只允许从紧到松的变化。</p><ul><li><code>type, format</code>组合所允许的变化范围</li></ul><figure><table><thead><tr><th>旧(type,format)</th><th>新(type,format)</th></tr></thead><tbody><tr><td>integer, null</td><td>integer, int64<br />number, double<br />number, null</td></tr><tr><td>integer, int32</td><td>integer, int64<br />integer, null<br />number, float<br />number, double<br />number, null</td></tr><tr><td>integer, int64</td><td>integer, null<br />number, double<br />number, null</td></tr><tr><td>number, null</td><td>number, double</td></tr><tr><td>number, float</td><td>number, null<br />number, double</td></tr><tr><td>number, double</td><td>number, null</td></tr><tr><td>string, null</td><td>string, password</td></tr><tr><td>string, password</td><td>string, null</td></tr></tbody></table></figure><ul><li><code>allOf</code>、<code>oneOf</code>、<code>anyOf</code>属性,在combine之后再做检查</li><li><code>multipleOf</code>属性,如果旧OAS为null。新OAS必须==旧OAS或者新OAS是旧OAS的因子,比如6(旧)-&gt;3(新)</li><li><code>maximum</code>、<code>maxLength</code>、<code>maxItems</code>、<code>maxProperties</code>,如果旧OAS为null,那么新OAS也必须是null。其他情况,新OAS必须&gt;=旧OAS。</li><li><code>minimum</code>、<code>minLenght</code>、<code>minItems</code>、<code>minProperties</code>,如果旧OAS为null,那么新OAS也必须是null。其他情况,新OAS必须&lt;=旧OAS。</li><li><code>exclusiveMaximum</code>、<code>exclusiveMinimum</code>属性,仅允许<code>true(旧)-&gt;false(新)</code>的变化</li><li><code>uniqueItems</code>属性,只允许<code>true(旧)-&gt;false(新)</code>的变化。</li><li><code>required</code>属性,新OAS必须==旧OAS,或者新OAS是旧OAS的子集。</li><li><code>enum</code>属性,新OAS必须==旧OAS,或者新OAS是旧OAS的超集。</li><li><code>properties</code>属性,新OAS可以新增property name(<code>properties</code>的key)或者减少property name。</li><li><code>nullable</code>属性,只允许<code>false(旧)-&gt;true(新)</code>的变化。</li><li><code>discriminator</code>属性,新旧OAS必须完全一致。</li><li><code>xml</code>属性,新旧OAS必须完全一致。</li><li><code>readOnly</code>、<code>writeOnly</code>,新旧OAS必须完全一致。</li></ul><h3><a name='header-n372' class='md-header-anchor '></a>用做响应时</h3><p>原则上,当Schema Object用在响应时,只允许从松到紧的变化。</p><ul><li><code>type, format</code>组合所允许的变化范围</li></ul><figure><table><thead><tr><th>旧(type,format)</th><th>新(type,format)</th></tr></thead><tbody><tr><td>integer, null</td><td>integer, int64<br />integer, int32</td></tr><tr><td>integer, int64</td><td>integer, null<br />interger, int32</td></tr><tr><td>number, null</td><td>number, double<br />number, float</td></tr><tr><td>number, double</td><td>number, null<br />number, float</td></tr><tr><td>string, null</td><td>string, password</td></tr><tr><td>string, password</td><td>string, null</td></tr></tbody></table></figure><ul><li><code>allOf</code>、<code>oneOf</code>、<code>anyOf</code>属性,在combine之后再做检查</li><li><code>multipleOf</code>属性,如果旧OAS为null。新OAS必须==旧OAS或者新OAS是旧OAS的倍数,比如3(旧)-&gt;6(新)</li><li><code>maximum</code>、<code>maxLength</code>、<code>maxItems</code>、<code>maxProperties</code>,如果旧OAS为null,那么新OAS也必须是null。其他情况,新OAS必须&lt;=旧OAS。</li><li><code>minimum</code>、<code>minLenght</code>、<code>minItems</code>、<code>minProperties</code>,如果旧OAS为null,那么新OAS也必须是null。其他情况,新OAS必须&gt;=旧OAS。</li><li><code>exclusiveMaximum</code>、<code>exclusiveMinimum</code>属性,仅允许<code>false(旧)-&gt;true(新)</code>的变化</li><li><code>uniqueItems</code>属性,只允许<code>false(旧)-&gt;true(新)</code>的变化。</li><li><code>required</code>属性,新OAS必须==旧OAS或者,新OAS是旧OAS的超集。</li><li><code>enum</code>属性,新OAS必须==旧OAS,或者新OAS是旧OAS的子集。</li><li><code>properties</code>属性,新OAS可以新增property name(<code>properties</code>的key)或者减少property name。</li><li><code>nullable</code>属性,只允许<code>true(旧)-&gt;false(新)</code>的变化。</li><li><code>discriminator</code>属性,新旧OAS必须完全一致。</li><li><code>xml</code>属性,新旧OAS必须完全一致。</li><li><code>readOnly</code>、<code>writeOnly</code>,新旧OAS必须完全一致。</li></ul><h3><a name='header-n426' class='md-header-anchor '></a>Encoding Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#encodingObject' target='_blank'>doc</a></h3><p><a name="encoding-compatibility"></a></p><p>PS. Encoding Object仅针对Request Body Object有用</p><ul><li><p><code>contentType</code>属性,新旧OAS必须保持一致</p></li><li><p><code>headers</code>属性,新OAS必须包含旧OAS的所有header name(<code>headers</code>的key),且不能新增header name,但是可以减少header name</p><ul><li><a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#header-object' target='_blank'>Header Object</a>见<a href='#header-compatibility'>Header Object兼容性检查</a></li></ul></li><li><p><code>style</code>属性,新旧OAS必须保持一致</p></li><li><p><code>explode</code>属性,新旧OAS必须保持一致</p></li><li><p><code>allowReserved</code>属性,只允许<code>false(旧) -&gt; true(新)</code>的变化</p></li></ul><h3><a name='header-n443' class='md-header-anchor '></a>Header Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#header-object' target='_blank'>doc</a></h3><p><a name="header-compatibility"></a></p><ul><li><code>schema</code>属性,见<a href='#schema-compatibility'>Schema Object兼容性检查</a></li></ul><h3><a name='header-n448' class='md-header-anchor '></a>Components Object <a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#components-object' target='_blank'>doc</a></h3><p><a name="components-compatibility"></a></p><p><a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#components-object' target='_blank'>Components Object</a>定义的都是可复用OAS Object,而在检查兼容性的时候所有<code>$ref</code>都已被解析了,因此不需要对<a href='https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#components-object' target='_blank'>Components Object</a>的属性做兼容性检查。</p><p>&nbsp;</p></div>
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diff --git a/oas-validator/oas-validator-web/src/main/resources/templates/index.html b/oas-validator/oas-validator-web/src/main/resources/templates/index.html
new file mode 100755
index 0000000..1a986f3
--- /dev/null
+++ b/oas-validator/oas-validator-web/src/main/resources/templates/index.html
@@ -0,0 +1,77 @@
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one or more
+  ~ contributor license agreements.  See the NOTICE file distributed with
+  ~ this work for additional information regarding copyright ownership.
+  ~ The ASF licenses this file to You under the Apache License, Version 2.0
+  ~ (the "License"); you may not use this file except in compliance with
+  ~ the License.  You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+<!DOCTYPE html>
+
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org" >
+<head>
+  <meta content="text/html;charset=UTF-8"/>
+  <meta name="viewport" content="width=device-width,initial-scale=1"/>
+  <title>The OpenAPI Specification Tools - Validator</title>
+
+  <link href="asserts/css/bootstrap.min.css" th:href="@{/webjars/bootstrap/4.3.1/css/bootstrap.css}" rel="stylesheet">
+</head>
+
+<body>
+
+  <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
+  <!-- Navbar content -->
+    <a class="navbar-brand" href="#">Servicecomb toolkit</a>
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
+      <span class="navbar-toggler-icon"></span>
+    </button>
+    <div class="collapse navbar-collapse" id="navbarNav">
+      <ul class="navbar-nav">
+        <li class="nav-item">
+          <a class="nav-link" href="#" th:href="@{/}">首页</a>
+        </li>
+      </ul>
+    </div>
+  </nav>
+  
+  <div style="height: 50px;"></div>
+
+  <div class="container">
+  
+  
+  <div class="card-deck">
+  
+  <div class="card mb-3 ">
+    <!-- <img src="..." class="card-img-top" alt="..."> -->
+    <div class="card-body">
+      <h5 class="card-title">合规性校验 &nbsp;&nbsp;&nbsp;&nbsp;<span style="font-size: 1rem;">[<a href="#" th:href="@{/doc/validator.html#header-n20}" target="_blank">文档</a>]</span> </h5>
+      <p class="card-text">对OAS Yaml文档的内容做合规性校验</p>
+      <a href="#" th:href="@{/validator/compliance}" class="btn btn-primary">进入</a>
+      
+    </div>
+  </div>
+  
+  <div class="card mb-3 ">
+    <!-- <img src="..." class="card-img-top" alt="..."> -->
+    <div class="card-body">
+      <h5 class="card-title">兼容性检查 &nbsp;&nbsp;&nbsp;&nbsp;<span style="font-size: 1rem;">[<a href="#" th:href="@{/doc/validator.html#header-n200}" target="_blank">文档</a>]</span> </h5>
+      <p class="card-text">对新旧两个版本的OAS做兼容性检查。</p>
+      <a href="#" th:href="@{/validator/compatibility}" class="btn btn-primary">进入</a>
+    </div>
+  </div>
+
+  </div>
+  
+  </div>
+
+</body>
+
+</html>
diff --git a/oas-validator/oas-validator-web/src/main/resources/templates/validator/compatibility.html b/oas-validator/oas-validator-web/src/main/resources/templates/validator/compatibility.html
new file mode 100755
index 0000000..748395b
--- /dev/null
+++ b/oas-validator/oas-validator-web/src/main/resources/templates/validator/compatibility.html
@@ -0,0 +1,165 @@
+<!DOCTYPE html>
+
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org" >
+<head>
+  <meta content="text/html;charset=UTF-8"/>
+  <meta name="viewport" content="width=device-width,initial-scale=1"/>
+  <title>The OpenAPI Specification Tools - Compatibility Validator</title>
+
+  <link href="asserts/css/bootstrap.min.css" th:href="@{/webjars/bootstrap/4.3.1/css/bootstrap.css}" rel="stylesheet">
+</head>
+
+<body>
+
+  <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
+  <!-- Navbar content -->
+    <a class="navbar-brand" href="#">Servicecomb toolkit</a>
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
+      <span class="navbar-toggler-icon"></span>
+    </button>
+    <div class="collapse navbar-collapse" id="navbarNav">
+      <ul class="navbar-nav">
+        <li class="nav-item">
+          <a class="nav-link" href="#" th:href="@{/}">首页</a>
+        </li>
+      </ul>
+    </div>
+  </nav>
+  
+  <div style="height: 50px;"></div>
+
+  <div class="container">
+
+    <h2>兼容性检查 &nbsp;&nbsp;&nbsp;&nbsp;<span style="font-size: 1rem;">[<a href="#" th:href="@{/doc/validator.html#header-n200}" target="_blank">文档</a>]</span> </h2>
+    <div class="" style="height: 20px;"></div>
+    
+    <div>
+      <textarea name="leftYaml" placeholder="旧 OpenAPI Document(yaml)" style="width: 45%; height: 480px;"></textarea>
+      <textarea name="rightYaml" placeholder="新 OpenAPI Document(yaml)" style="width: 45%; height: 480px;"></textarea>
+      <div>
+      <button id="compatibilityValidate" class="btn btn-info">兼容性检查</button>
+      </div>
+    </div>
+  
+    <div class="" style="height: 20px;"></div>
+  
+    <div>
+      <code id="compatibilityViolations"></code>
+    </div>
+
+    <div class="" style="height: 20px;"></div>
+  
+  </div>
+
+  <script type="text/javascript" src="" th:src="@{/webjars/jquery/3.0.0/jquery.js}"></script>
+  <script type="text/javascript" src="" th:src="@{/webjars/bootstrap/4.3.1/js/bootstrap.js}"></script>
+  
+  <script type="text/javascript">
+    var addParseErrors = function(element, title, parseErrors) {
+
+      if (parseErrors && parseErrors.length > 0) {
+        element.append(title + ' parse errors:');
+        element.append("<br/>");
+        $.each(parseErrors, function(i) {
+          var parseError = parseErrors[i];
+          element.append(parseError);
+          element.append("<br/>");
+        })
+        return false;
+      }
+      return true;
+    }
+
+  $(function(){
+    
+    $('#compatibilityValidate').on('click', function(e) {
+      var url = "/api/compatibility";
+  
+      var rightYaml = $('textarea[name="rightYaml"]').val(); if (rightYaml=="") {return;}
+      var leftYaml = $('textarea[name="leftYaml"]').val(); if (leftYaml=="") {return;}
+      
+      var data = leftYaml + "\n---\n" + rightYaml;
+      
+      post(url, data, function(json) {
+        console.log(json);
+        
+
+        if (!json.acknowleged) {
+          alert('出错了');
+        }
+        
+        var data = json.data;
+        var compatibilityViolations = $("#compatibilityViolations");
+        compatibilityViolations.empty();
+
+        if (!addParseErrors(compatibilityViolations, 'Old version', data.leftParseErrors)) {
+          return;
+        }
+        if (!addParseErrors(compatibilityViolations, 'New version', data.rightParseErrors)) {
+          return;
+        }
+        var violations = data.violations;
+        
+        if (violations && violations.length == 0) {
+          alert('文档兼容');
+        }
+        
+
+        $.each(violations, function(i) {
+          var violation = violations[i];
+          
+          var leftLocationPath = "";
+          if (violation.leftLocation) {
+            $.each(violation.leftLocation.path, function(j) {
+              var p = violation.leftLocation.path[j];
+              leftLocationPath += p.name+'.';
+            });
+            if (leftLocationPath.length > 0) {
+            	leftLocationPath = leftLocationPath.substring(0, leftLocationPath.length-1);
+            }
+          }
+          
+          var rightLocationPath = "";
+          if (violation.rightLocation) {
+            $.each(violation.rightLocation.path, function(j) {
+              var p = violation.rightLocation.path[j];
+              rightLocationPath += p.name+'.';
+            });
+            if (rightLocationPath.length > 0) {
+            	rightLocationPath = rightLocationPath.substring(0, rightLocationPath.length-1);
+            }
+          }
+
+          var errorInfo = leftLocationPath + " -> " + rightLocationPath + " : " + violation.error;
+
+          compatibilityViolations.append(errorInfo);
+          compatibilityViolations.append("<br/>");
+        });
+        
+      });
+    });
+  
+  });
+  
+  function post(url, data, cb) {// application/json // text/plain
+    
+    $.ajax({
+      url: url, 
+      data: data,
+      type: 'post',
+      headers: {
+        "Accept": "application/json; charset=utf-8", 
+        "Content-Type": "text/plain; charset=utf-8"
+      },
+      success: function(json) {
+        cb(json);
+      }
+    });
+    
+  }
+  
+  </script>
+
+</body>
+
+</html>
diff --git a/oas-validator/oas-validator-web/src/main/resources/templates/validator/compliance.html b/oas-validator/oas-validator-web/src/main/resources/templates/validator/compliance.html
new file mode 100755
index 0000000..29cfef6
--- /dev/null
+++ b/oas-validator/oas-validator-web/src/main/resources/templates/validator/compliance.html
@@ -0,0 +1,164 @@
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one or more
+  ~ contributor license agreements.  See the NOTICE file distributed with
+  ~ this work for additional information regarding copyright ownership.
+  ~ The ASF licenses this file to You under the Apache License, Version 2.0
+  ~ (the "License"); you may not use this file except in compliance with
+  ~ the License.  You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+<!DOCTYPE html>
+
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org" >
+<head>
+  <meta content="text/html;charset=UTF-8"/>
+  <meta name="viewport" content="width=device-width,initial-scale=1"/>
+  <title>The OpenAPI Specification Tools - Compliance Validator</title>
+
+  <link href="asserts/css/bootstrap.min.css" th:href="@{/webjars/bootstrap/4.3.1/css/bootstrap.css}" rel="stylesheet">
+</head>
+
+<body>
+
+  <nav class="navbar navbar-expand-lg navbar-dark bg-dark">
+  <!-- Navbar content -->
+    <a class="navbar-brand" href="#">Servicecomb toolkit</a>
+    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
+      <span class="navbar-toggler-icon"></span>
+    </button>
+    <div class="collapse navbar-collapse" id="navbarNav">
+      <ul class="navbar-nav">
+        <li class="nav-item">
+          <a class="nav-link" href="#" th:href="@{/}">首页</a>
+        </li>
+      </ul>
+    </div>
+  </nav>
+  
+  <div style="height: 50px;"></div>
+
+  <div class="container">
+    
+    <h2>合规性校验 &nbsp;&nbsp;&nbsp;&nbsp;<span style="font-size: 1rem;">[<a href="#" th:href="@{/doc/validator.html#header-n20}" target="_blank">文档</a>]</span> </h2>
+    <div class="" style="height: 20px;"></div>
+  
+    <div>
+      <textarea name="yaml" placeholder="OpenAPI Document(yaml)" style="width: 80%; height: 480px;"></textarea>
+      <div>
+      <button id="complianceValidate" class="btn btn-info">合规性校验</button>
+      </div>
+    </div>
+    
+    <div class="" style="height: 20px;"></div>
+    
+    <div>
+      <code id="complianceViolations"></code>
+    </div>
+
+    <div class="" style="height: 20px;"></div>
+  
+  </div>
+  
+    
+  <script type="text/javascript" src="" th:src="@{/webjars/jquery/3.0.0/jquery.js}"></script>
+  <script type="text/javascript" src="" th:src="@{/webjars/bootstrap/4.3.1/js/bootstrap.js}"></script>
+  
+  <script type="text/javascript">
+
+    var addParseErrors = function(element, parseErrors) {
+
+      if (parseErrors && parseErrors.length > 0) {
+        element.append("Parse errors:");
+        element.append("<br/>");
+        $.each(parseErrors, function(i) {
+          var parseError = parseErrors[i];
+          element.append(parseError);
+          element.append("<br/>");
+        })
+        return false;
+      }
+      return true;
+    }
+
+    $(function(){
+    
+    $('#complianceValidate').on('click', function(e) {
+      var url = "/api/compliance";
+      
+      var yaml = $('textarea[name="yaml"]').val(); if (yaml=="") {return;}
+      
+      var data = yaml
+      
+      post(url, data, function(json) {
+        console.log(json);
+        
+        if (!json.acknowleged) {
+          alert('出错了');
+        }
+        
+        var data = json.data;
+
+        var complianceViolations = $("#complianceViolations");
+        complianceViolations.empty();
+
+        if (!addParseErrors(complianceViolations, data.parseErrors)) {
+          return;
+        }
+
+        var violations = data.violations;
+        if (violations && violations.length == 0) {
+          alert('文档合规');
+        }
+
+        $.each(violations, function(i) {
+          var violation = violations[i];
+          
+          var locationPath = "";
+          $.each(violation.location.path, function(j) {
+            var p = violation.location.path[j];
+            locationPath += p.name+'.';
+          });
+          if (locationPath.length > 0) {
+          	locationPath = locationPath.substring(0, locationPath.length-1);
+          }
+          
+          var errorInfo = ""+ locationPath + " : " + violation.error;
+          
+          complianceViolations.append(errorInfo);
+          complianceViolations.append("<br/>");
+        });
+        
+      });
+    });
+
+  });
+  
+  function post(url, data, cb) {// application/json // text/plain
+    
+    $.ajax({
+      url: url, 
+      data: data,
+      type: 'post',
+      headers: {
+        "Accept": "application/json; charset=utf-8", 
+        "Content-Type": "text/plain; charset=utf-8"
+      },
+      success: function(json) {
+        cb(json);
+      }
+    });
+    
+  }
+  
+  </script>
+  
+</body>
+
+</html>
diff --git a/oas-validator/pom.xml b/oas-validator/pom.xml
new file mode 100755
index 0000000..3002928
--- /dev/null
+++ b/oas-validator/pom.xml
@@ -0,0 +1,315 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one or more
+  ~ contributor license agreements.  See the NOTICE file distributed with
+  ~ this work for additional information regarding copyright ownership.
+  ~ The ASF licenses this file to You under the Apache License, Version 2.0
+  ~ (the "License"); you may not use this file except in compliance with
+  ~ the License.  You may obtain a copy of the License at
+  ~
+  ~     http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>org.apache.servicecomb.toolkit</groupId>
+  <artifactId>oas-validator-parent</artifactId>
+  <version>0.2.0-SNAPSHOT</version>
+  <packaging>pom</packaging>
+
+  <licenses>
+    <license>
+      <name>Apache License, Version 2.0</name>
+      <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+      <distribution>repo</distribution>
+    </license>
+  </licenses>
+  
+  <properties>
+    <java.version>1.8</java.version>
+    <maven.compiler.source>${java.version}</maven.compiler.source>
+    <maven.compiler.target>${java.version}</maven.compiler.target>
+    <fabric8.dmp.version>0.28.0</fabric8.dmp.version>
+
+    <maven-compiler-plugin.version>3.3</maven-compiler-plugin.version>
+    <maven.surefire.version>3.0.0-M3</maven.surefire.version>
+    <maven-source-plugin.version>3.0.1</maven-source-plugin.version>
+    <maven-javadoc-plugin.version>3.0.1</maven-javadoc-plugin.version>
+
+    <skipTests>false</skipTests>
+    <skipITs>${skipTests}</skipITs>
+    <skipUTs>${skipTests}</skipUTs>
+
+    <swagger-parser.version>2.0.12</swagger-parser.version>
+    <commons-collections4.version>4.3</commons-collections4.version>
+    <commons-io.version>2.6</commons-io.version>
+    <spring-boot.version>2.1.4.RELEASE</spring-boot.version>
+  </properties>
+
+  <modules>
+    <module>oas-validator-core</module>
+    <module>oas-validator-core-spring</module>
+    <module>oas-validator-test</module>
+    <module>oas-validator-compliance</module>
+    <module>oas-validator-compliance-spring</module>
+    <module>oas-validator-compatibility</module>
+    <module>oas-validator-compatibility-spring</module>
+    <module>oas-validator-web</module>
+    <module>distribution</module>
+  </modules>
+
+
+  <dependencyManagement>
+    <dependencies>
+
+      <dependency>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-dependencies</artifactId>
+        <version>${spring-boot.version}</version>
+        <type>pom</type>
+        <scope>import</scope>
+      </dependency>
+
+      <dependency>
+        <groupId>org.apache.commons</groupId>
+        <artifactId>commons-collections4</artifactId>
+        <version>${commons-collections4.version}</version>
+      </dependency>
+
+      <dependency>
+        <groupId>io.swagger.parser.v3</groupId>
+        <artifactId>swagger-parser</artifactId>
+        <version>${swagger-parser.version}</version>
+      </dependency>
+
+      <dependency>
+        <groupId>commons-io</groupId>
+        <artifactId>commons-io</artifactId>
+        <version>${commons-io.version}</version>
+      </dependency>
+    </dependencies>
+  </dependencyManagement>
+
+  <build>
+    <pluginManagement>
+      <plugins>
+        <plugin>
+          <groupId>org.springframework.boot</groupId>
+          <artifactId>spring-boot-maven-plugin</artifactId>
+          <executions>
+            <execution>
+              <id>boot-repackage</id>
+              <phase>package</phase>
+              <goals>
+                <goal>repackage</goal>
+              </goals>
+            </execution>
+          </executions>
+          <configuration>
+            <classifier>exec</classifier>
+          </configuration>
+        </plugin>
+
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-failsafe-plugin</artifactId>
+          <version>${maven.surefire.version}</version>
+          <executions>
+            <execution>
+              <id>integration-test</id>
+              <goals>
+                <goal>integration-test</goal>
+              </goals>
+            </execution>
+            <execution>
+              <id>verify</id>
+              <goals>
+                <goal>verify</goal>
+              </goals>
+            </execution>
+          </executions>
+          <configuration>
+            <skipTests>${skipTests}</skipTests>
+            <skipITs>${skipITs}</skipITs>
+          </configuration>
+        </plugin>
+
+        <plugin>
+          <groupId>io.fabric8</groupId>
+          <artifactId>docker-maven-plugin</artifactId>
+          <version>${fabric8.dmp.version}</version>
+          <configuration>
+            <skip>${skipITs}</skip>
+          </configuration>
+          <executions>
+            <execution>
+              <id>start</id>
+              <phase>pre-integration-test</phase>
+              <goals>
+                <goal>start</goal>
+              </goals>
+            </execution>
+            <execution>
+              <id>stop</id>
+              <phase>post-integration-test</phase>
+              <goals>
+                <goal>stop</goal>
+              </goals>
+            </execution>
+          </executions>
+        </plugin>
+
+
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-surefire-plugin</artifactId>
+          <version>${maven.surefire.version}</version>
+          <configuration>
+            <skipTests>${skipUTs}</skipTests>
+          </configuration>
+        </plugin>
+
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-surefire-report-plugin</artifactId>
+          <version>${maven.surefire.version}</version>
+          <executions>
+            <execution>
+              <id>report</id>
+              <phase>post-integration-test</phase>
+              <goals>
+                <goal>report-only</goal>
+              </goals>
+            </execution>
+          </executions>
+        </plugin>
+
+        <plugin>
+          <groupId>org.codehaus.mojo</groupId>
+          <artifactId>license-maven-plugin</artifactId>
+          <version>1.19</version>
+          <executions>
+            <execution>
+              <id>default-cli</id>
+              <configuration>
+                <!-- Accept the pom module -->
+                <acceptPomPackaging>true</acceptPomPackaging>
+                <!-- Using the template which is grouped by License file -->
+                <fileTemplate>/org/codehaus/mojo/license/third-party-file-groupByMultiLicense.ftl</fileTemplate>
+                <licenseMerges>
+                  <licenseMerge>The Apache Software License, Version 2.0|The Apache License, Version 2.0</licenseMerge>
+                  <licenseMerge>The Apache Software License, Version 2.0|Apache License, Version 2.0</licenseMerge>
+                  <licenseMerge>The Apache Software License, Version 2.0|Apache Public License 2.0</licenseMerge>
+                  <licenseMerge>The Apache Software License, Version 2.0|Apache 2</licenseMerge>
+                  <licenseMerge>The Apache Software License, Version 2.0|Apache 2.0</licenseMerge>
+                  <licenseMerge>The Apache Software License, Version 2.0|Apache-2.0</licenseMerge>
+                  <licenseMerge>The Apache Software License, Version 2.0|Apache License 2.0</licenseMerge>
+                  <licenseMerge>The Apache Software License, Version 2.0|Apache License, version 2.0</licenseMerge>
+                  <licenseMerge>3-Clause BSD License|BSD 3-clause</licenseMerge>
+                  <licenseMerge>3-Clause BSD License|BSD 3-Clause</licenseMerge>
+                  <licenseMerge>Eclipse Public License v1.0|Eclipse Public License 1.0</licenseMerge>
+                  <licenseMerge>Eclipse Public License v1.0|Eclipse Public License - v 1.0</licenseMerge>
+                  <licenseMerge>The MIT License|MIT License</licenseMerge>
+                </licenseMerges>
+              </configuration>
+            </execution>
+          </executions>
+        </plugin>
+        
+      </plugins>
+    </pluginManagement>
+
+
+    <plugins>
+
+      <plugin>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-maven-plugin</artifactId>
+        <configuration>
+          <skip>true</skip>
+        </configuration>
+      </plugin>
+
+    </plugins>
+    
+  </build>
+
+  <profiles>
+    <profile>
+      <id>release</id>
+      <build>
+        <plugins>
+          <!-- <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-gpg-plugin</artifactId>
+            <version>1.6</version>
+            <executions>
+              <execution>
+                <id>sign-artifacts</id>
+                <phase>verify</phase>
+                <goals>
+                  <goal>sign</goal>
+                </goals>
+              </execution>
+            </executions>
+          </plugin> -->
+          <!-- Source -->
+          <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-source-plugin</artifactId>
+            <version>${maven-source-plugin.version}</version>
+            <executions>
+              <execution>
+                <!-- <phase>package</phase> -->
+                <id>attach-sources</id>
+                <goals>
+                  <goal>jar-no-fork</goal>
+                </goals>
+              </execution>
+            </executions>
+          </plugin>
+          <!-- Javadoc -->
+          <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-javadoc-plugin</artifactId>
+            <version>${maven-javadoc-plugin.version}</version>
+            <executions>
+              <execution>
+                <!-- <phase>package</phase> -->
+                <id>attach-javadocs</id>
+                <goals>
+                  <goal>jar</goal>
+                </goals>
+              </execution>
+            </executions>
+            <configuration>
+              <charset>UTF-8</charset>
+              <locale>zh_CN</locale>
+              <doclint>reference</doclint>
+            </configuration>
+          </plugin>
+        </plugins>
+      </build>
+    </profile>
+  </profiles>
+
+  <repositories>
+    <repository>
+      <snapshots>
+        <enabled>false</enabled>
+      </snapshots>
+      <id>central</id>
+      <url>http://repo.maven.apache.org/maven2</url>
+    </repository>
+  </repositories>
+
+</project>