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---
title: uri-blocker
keywords:
- Apache APISIX
- API 网关
- URI Blocker
description: 本文介绍了 Apache APISIX uri-blocker 插件的基本信息及使用方法。
---
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## 描述
`uri-blocker` 插件通过指定一系列 `block_rules` 来拦截用户请求。
## 属性
| 名称 | 类型 | 必选项 | 默认值 | 有效值 | 描述 |
| ------------- | ------------- | ------ | ------ | ---------- | ------------------------------------------------------------------- |
| block_rules | array[string] | | | | 正则过滤数组。它们都是正则规则,如果当前请求 URI 命中其中任何一个,则将响应代码设置为 `rejected_code` 以退出当前用户请求。例如:`["root.exe", "root.m+"]` |
| rejected_code | integer | | 403 | [200, ...] | 当请求 URI 命中 `block_rules` 中的任何一个时,将返回的 HTTP 状态代码。 |
| rejected_msg | string | | | 非空 | 当请求 URI 命中 `block_rules` 中的任何一个时,将返回的 HTTP 响应体。 |
| case_insensitive | boolean | | false | | 是否忽略大小写。当设置为 `true` 时,在匹配请求 URI 时将忽略大小写。 |
## 启用插件
以下示例展示了如何在指定的路由上启用 `uri-blocker` 插件:
:::note
您可以这样从 `config.yaml` 中获取 `admin_key` 并存入环境变量:
```bash
admin_key=$(yq '.deployment.admin.admin_key[0].key' conf/config.yaml | sed 's/"//g')
```
:::
```shell
curl -i http://127.0.0.1:9180/apisix/admin/routes/1 -H "X-API-KEY: $admin_key" -X PUT -d '
{
"uri": "/*",
"plugins": {
"uri-blocker": {
"block_rules": ["root.exe", "root.m+"]
}
},
"upstream": {
"type": "roundrobin",
"nodes": {
"127.0.0.1:1980": 1
}
}
}'
```
## 测试插件
启用并配置插件后,使用 `curl` 命令尝试访问 `block_rules` 中指定文件的 URI
```shell
curl -i http://127.0.0.1:9080/root.exe?a=a
```
如果发现返回了带有 `403` 状态码的 HTTP 响应头,则代表插件生效:
```shell
HTTP/1.1 403 Forbidden
Date: Wed, 17 Jun 2020 13:55:41 GMT
Content-Type: text/html; charset=utf-8
Content-Length: 150
Connection: keep-alive
Server: APISIX web server
...
```
通过设置属性 `rejected_msg` 的值为 `access is not allowed`,将会收到包含如下信息的响应体:
```shell
...
{"error_msg":"access is not allowed"}
...
```
## 删除插件
当你需要禁用 `uri-blocker` 插件时,可以通过以下命令删除相应的 JSON 配置,APISIX 将会自动重新加载相关配置,无需重启服务:
```shell
curl http://127.0.0.1:9180/apisix/admin/routes/1 -H "X-API-KEY: $admin_key" -X PUT -d '
{
"uri": "/*",
"upstream": {
"type": "roundrobin",
"nodes": {
"127.0.0.1:1980": 1
}
}
}'
```