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| </h1> |
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| 2 分钟 阅读 |
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| <section class="page__content" itemprop="text"> |
| <p>基于ServiceComb和Zuul实现微服务网关，如此一来用户只需要专注实现其业务需求。</p> |
| |
| <h3 id="场景">场景</h3> |
| <p>本文将以一个简单的Hello服务演示网关的使用。Hello微服务提供一个hello/{name}接口，只要传递路径参数name就可以返回打招呼内容。接口返回结果通过网关将在浏览器界面显示</p> |
| |
| <p><img src="/assets/images/zuul/demo-theory.png" alt="在这里插入图片描述" /></p> |
| |
| <h3 id="技术准备">技术准备</h3> |
| <p><a href="http://servicecomb.apache.org/cn/docs/quick-start/">ServiceComb</a> 作为后端微服务核心框架 <br /> |
| <a href="https://github.com/apache/servicecomb-service-center">ServiceCenter</a> 作为服务发现与注册中心<br /> |
| <a href="https://cloud.spring.io/spring-cloud-netflix/multi/multi__router_and_filter_zuul.html">SpringCloud Zuul</a> 组件做服务网关</p> |
| |
| <h3 id="环境准备">环境准备</h3> |
| <p>以下环境为Windows 64位系统</p> |
| <ul> |
| <li> |
| <p>安装git，详情可参考<a href="https://git-scm.com/book/zh/v2/%E8%B5%B7%E6%AD%A5-%E5%AE%89%E8%A3%85-Git">git安装教程</a></p> |
| </li> |
| <li> |
| <p>安装JDK 1.8，详情可参考<a href="https://docs.oracle.com/javase/8/docs/technotes/guides/install/install_overview.html">JDK安装教程</a>。</p> |
| </li> |
| <li> |
| <p>安装Maven 3.x，详情可参考<a href="https://maven.apache.org/install.html">Maven安装教程</a></p> |
| </li> |
| </ul> |
| |
| <p>ServiceCenter安装<br /> |
| 下载地址：http://mirrors.hust.edu.cn/apache/servicecomb/servicecomb-service-center/1.1.0/apache-servicecomb-service-center-1.1.0-windows-amd64.tar.gz |
| 下载后解压如下 |
| <img src="/assets/images/zuul/demo-dir.png" alt="在这里插入图片描述" /></p> |
| |
| <p>在该目录下双击service-center.exe即可启动，命令窗口中出现如下信息基本代表ServiceCenter启动成功，从这个信息也可以得知ServiceCenter监听的是30100端口，等下配置文件要用到。 |
| <img src="/assets/images/zuul/demo-servicecenter-console1.png" alt="在这里插入图片描述" /></p> |
| |
| <p>问题点： 有可能会有如下信息，这个一般是端口被占用，很可能你打开了两个ServiceCenter，都关闭后再打开就可以了。 |
| <img src="/assets/images/zuul/demo-servicecenter-console2.png" alt="在这里插入图片描述" /></p> |
| |
| <h3 id="示例">示例</h3> |
| |
| <h4 id="一--后端微服务-helloservice">一. 后端微服务 HelloService</h4> |
| <h5 id="1-添加依赖">1. 添加依赖</h5> |
| <p>新建maven项目HelloService，pom文件如下</p> |
| <div class="language-xml highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="cp"><?xml version="1.0" encoding="UTF-8"?></span> |
| <span class="nt"><project</span> <span class="na">xmlns=</span><span class="s">"http://maven.apache.org/POM/4.0.0"</span> |
| <span class="na">xmlns:xsi=</span><span class="s">"http://www.w3.org/2001/XMLSchema-instance"</span> |
| <span class="na">xsi:schemaLocation=</span><span class="s">"http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"</span><span class="nt">></span> |
| <span class="nt"><modelVersion></span>4.0.0<span class="nt"></modelVersion></span> |
| |
| <span class="nt"><groupId></span>com.servicecomb.example<span class="nt"></groupId></span> |
| <span class="nt"><artifactId></span>HelloService<span class="nt"></artifactId></span> |
| <span class="nt"><version></span>1.0-SNAPSHOT<span class="nt"></version></span> |
| |
| <span class="nt"><dependencies></span> |
| <span class="nt"><dependency></span> |
| <span class="nt"><groupId></span>org.springframework.boot<span class="nt"></groupId></span> |
| <span class="nt"><artifactId></span>spring-boot-starter<span class="nt"></artifactId></span> |
| <span class="nt"><version></span>1.5.12.RELEASE<span class="nt"></version></span> |
| <span class="nt"></dependency></span> |
| |
| <span class="nt"><dependency></span> |
| <span class="nt"><groupId></span>org.apache.servicecomb<span class="nt"></groupId></span> |
| <span class="nt"><artifactId></span>spring-boot-starter-provider<span class="nt"></artifactId></span> |
| <span class="nt"><version></span>1.1.0<span class="nt"></version></span> |
| <span class="nt"></dependency></span> |
| |
| <span class="nt"><dependency></span> |
| <span class="nt"><groupId></span>org.hibernate<span class="nt"></groupId></span> |
| <span class="nt"><artifactId></span>hibernate-validator<span class="nt"></artifactId></span> |
| <span class="nt"><version></span>5.3.6.Final<span class="nt"></version></span> |
| <span class="nt"></dependency></span> |
| |
| <span class="nt"></dependencies></span> |
| |
| <span class="nt"><dependencyManagement></span> |
| <span class="nt"><dependencies></span> |
| <span class="nt"><dependency></span> |
| <span class="nt"><groupId></span>org.apache.servicecomb<span class="nt"></groupId></span> |
| <span class="nt"><artifactId></span>java-chassis-dependencies<span class="nt"></artifactId></span> |
| <span class="nt"><version></span>1.1.0<span class="nt"></version></span> |
| <span class="nt"><type></span>pom<span class="nt"></type></span> |
| <span class="nt"><scope></span>import<span class="nt"></scope></span> |
| <span class="nt"></dependency></span> |
| <span class="nt"></dependencies></span> |
| <span class="nt"></dependencyManagement></span> |
| |
| <span class="nt"><build></span> |
| <span class="nt"><plugins></span> |
| <span class="nt"><plugin></span> |
| <span class="nt"><groupId></span>org.springframework.boot<span class="nt"></groupId></span> |
| <span class="nt"><artifactId></span>spring-boot-maven-plugin<span class="nt"></artifactId></span> |
| <span class="nt"></plugin></span> |
| <span class="nt"></plugins></span> |
| <span class="nt"></build></span> |
| |
| <span class="nt"></project></span> |
| </code></pre></div></div> |
| |
| <h5 id="2-配置">2. 配置</h5> |
| <p>新建ServiceComb配置文件src/main/resources/microservice.yaml，内容如下</p> |
| <div class="language-yaml highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="na">APPLICATION_ID</span><span class="pi">:</span> <span class="s">helloworld</span> <span class="c1"># 应用名，注意与网关服务器的应用名保持一致</span> |
| <span class="na">service_description</span><span class="pi">:</span> |
| <span class="na">name</span><span class="pi">:</span> <span class="s">helloservice</span> <span class="c1"># 微服务名</span> |
| <span class="na">version</span><span class="pi">:</span> <span class="s">0.0.1</span> <span class="c1"># 微服务版本号</span> |
| <span class="na">servicecomb</span><span class="pi">:</span> |
| <span class="na">service</span><span class="pi">:</span> |
| <span class="na">registry</span><span class="pi">:</span> |
| <span class="na">address</span><span class="pi">:</span> <span class="s">http://127.0.0.1:30100</span> <span class="c1"># 服务注册中心（重要）</span> |
| <span class="na">rest</span><span class="pi">:</span> |
| <span class="na">address</span><span class="pi">:</span> <span class="s">0.0.0.0:7777</span> <span class="c1"># 微服务启动端口</span> |
| </code></pre></div></div> |
| |
| <h5 id="3-项目入口">3. 项目入口</h5> |
| |
| <p>新建启动类HelloApplication.java，内容如下</p> |
| <div class="language-java highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="kn">package</span> <span class="n">com</span><span class="o">.</span><span class="na">servicecomb</span><span class="o">.</span><span class="na">example</span><span class="o">;</span> |
| |
| <span class="kn">import</span> <span class="nn">org.apache.servicecomb.springboot.starter.provider.EnableServiceComb</span><span class="o">;</span> |
| <span class="kn">import</span> <span class="nn">org.springframework.boot.SpringApplication</span><span class="o">;</span> |
| <span class="kn">import</span> <span class="nn">org.springframework.boot.autoconfigure.SpringBootApplication</span><span class="o">;</span> |
| |
| |
| <span class="nd">@SpringBootApplication</span> |
| <span class="c1">//这个注解使Spring能够自动配置ServiceComb模块</span> |
| <span class="nd">@EnableServiceComb</span> |
| <span class="kd">public</span> <span class="kd">class</span> <span class="nc">HelloApplication</span> <span class="o">{</span> |
| <span class="kd">public</span> <span class="kd">static</span> <span class="kt">void</span> <span class="nf">main</span><span class="o">(</span><span class="nc">String</span><span class="o">[]</span> <span class="n">args</span><span class="o">)</span> <span class="o">{</span> |
| <span class="nc">SpringApplication</span><span class="o">.</span><span class="na">run</span><span class="o">(</span><span class="nc">HelloApplication</span><span class="o">.</span><span class="na">class</span><span class="o">,</span> <span class="n">args</span><span class="o">);</span> |
| <span class="o">}</span> |
| <span class="o">}</span> |
| |
| </code></pre></div></div> |
| |
| <p>新建Controller类HelloController.java （这里我习惯SpringMvc的叫法，重点看注解）</p> |
| <div class="language-java highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="kn">package</span> <span class="n">com</span><span class="o">.</span><span class="na">servicecomb</span><span class="o">.</span><span class="na">example</span><span class="o">;</span> |
| |
| <span class="kn">import</span> <span class="nn">org.apache.servicecomb.provider.rest.common.RestSchema</span><span class="o">;</span> |
| <span class="kn">import</span> <span class="nn">org.springframework.web.bind.annotation.GetMapping</span><span class="o">;</span> |
| <span class="kn">import</span> <span class="nn">org.springframework.web.bind.annotation.PathVariable</span><span class="o">;</span> |
| <span class="kn">import</span> <span class="nn">org.springframework.web.bind.annotation.RequestMapping</span><span class="o">;</span> |
| |
| <span class="c1">//restful服务契约</span> |
| <span class="nd">@RestSchema</span><span class="o">(</span><span class="n">schemaId</span> <span class="o">=</span> <span class="s">"helloController"</span><span class="o">)</span> |
| <span class="nd">@RequestMapping</span><span class="o">(</span><span class="n">path</span> <span class="o">=</span> <span class="s">"/"</span><span class="o">)</span> |
| <span class="kd">public</span> <span class="kd">class</span> <span class="nc">HelloController</span> <span class="o">{</span> |
| |
| <span class="nd">@GetMapping</span><span class="o">(</span><span class="n">path</span> <span class="o">=</span> <span class="s">"/hello/{name}"</span><span class="o">)</span> |
| <span class="kd">public</span> <span class="nc">String</span> <span class="nf">hello</span><span class="o">(</span><span class="nd">@PathVariable</span><span class="o">(</span><span class="s">"name"</span><span class="o">)</span> <span class="nc">String</span> <span class="n">name</span><span class="o">)</span> <span class="o">{</span> |
| <span class="k">return</span> <span class="s">"Hello, "</span> <span class="o">+</span> <span class="n">name</span><span class="o">;</span> |
| <span class="o">}</span> |
| |
| <span class="o">}</span> |
| |
| </code></pre></div></div> |
| |
| <h5 id="4-启动">4. 启动</h5> |
| <p>到此，一个微服务就写完了，如下在IDEA里面直接启动应用 |
| <img src="/assets/images/zuul/demo-helloservice-start.png" alt="在这里插入图片描述" /></p> |
| |
| <h4 id="二-编写zuul网关服务">二. 编写Zuul网关服务</h4> |
| <h5 id="1-添加依赖-1">1. 添加依赖</h5> |
| <p>新建maven项目 zuulserver，pom文件如下</p> |
| <div class="language-xml highlighter-rouge"><div class="highlight"><pre class="highlight"><code> |
| <span class="cp"><?xml version="1.0" encoding="UTF-8"?></span> |
| <span class="nt"><project</span> <span class="na">xmlns=</span><span class="s">"http://maven.apache.org/POM/4.0.0"</span> |
| <span class="na">xmlns:xsi=</span><span class="s">"http://www.w3.org/2001/XMLSchema-instance"</span> |
| <span class="na">xsi:schemaLocation=</span><span class="s">"http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"</span><span class="nt">></span> |
| <span class="nt"><modelVersion></span>4.0.0<span class="nt"></modelVersion></span> |
| |
| <span class="nt"><groupId></span>com.servicecomb.example<span class="nt"></groupId></span> |
| <span class="nt"><artifactId></span>zuulserver<span class="nt"></artifactId></span> |
| <span class="nt"><version></span>1.0-SNAPSHOT<span class="nt"></version></span> |
| |
| <span class="nt"><dependencies></span> |
| <span class="nt"><dependency></span> |
| <span class="nt"><groupId></span>org.springframework.boot<span class="nt"></groupId></span> |
| <span class="nt"><artifactId></span>spring-boot-starter<span class="nt"></artifactId></span> |
| <span class="nt"><version></span>1.5.12.RELEASE<span class="nt"></version></span> |
| <span class="nt"></dependency></span> |
| |
| <span class="c"><!-- ServiceComb框架，提供基础能力 --></span> |
| <span class="nt"><dependency></span> |
| <span class="nt"><groupId></span>org.apache.servicecomb<span class="nt"></groupId></span> |
| <span class="nt"><artifactId></span>spring-boot-starter-servicecomb<span class="nt"></artifactId></span> |
| <span class="nt"><version></span>1.1.0<span class="nt"></version></span> |
| <span class="nt"></dependency></span> |
| |
| <span class="c"><!-- ServiceComb与SpringCloud Zuul的集成框架 --></span> |
| <span class="nt"><dependency></span> |
| <span class="nt"><groupId></span>org.apache.servicecomb<span class="nt"></groupId></span> |
| <span class="nt"><artifactId></span>spring-boot-starter-discovery<span class="nt"></artifactId></span> |
| <span class="nt"><version></span>1.1.0<span class="nt"></version></span> |
| <span class="nt"></dependency></span> |
| |
| <span class="c"><!-- SpringCloud Zuul框架 --></span> |
| <span class="nt"><dependency></span> |
| <span class="nt"><groupId></span>org.apache.servicecomb<span class="nt"></groupId></span> |
| <span class="nt"><artifactId></span>spring-cloud-zuul<span class="nt"></artifactId></span> |
| <span class="nt"><version></span>1.1.0<span class="nt"></version></span> |
| <span class="nt"></dependency></span> |
| |
| <span class="nt"></dependencies></span> |
| |
| <span class="c"><!-- 导入ServiceComb所需依赖 --></span> |
| <span class="nt"><dependencyManagement></span> |
| <span class="nt"><dependencies></span> |
| <span class="nt"><dependency></span> |
| <span class="nt"><groupId></span>org.apache.servicecomb<span class="nt"></groupId></span> |
| <span class="nt"><artifactId></span>java-chassis-dependencies<span class="nt"></artifactId></span> |
| <span class="nt"><version></span>1.1.0<span class="nt"></version></span> |
| <span class="nt"><type></span>pom<span class="nt"></type></span> |
| <span class="nt"><scope></span>import<span class="nt"></scope></span> |
| <span class="nt"></dependency></span> |
| <span class="nt"></dependencies></span> |
| <span class="nt"></dependencyManagement></span> |
| |
| <span class="nt"><build></span> |
| <span class="nt"><plugins></span> |
| <span class="nt"><plugin></span> |
| <span class="nt"><groupId></span>org.springframework.boot<span class="nt"></groupId></span> |
| <span class="nt"><artifactId></span>spring-boot-maven-plugin<span class="nt"></artifactId></span> |
| <span class="nt"></plugin></span> |
| <span class="nt"></plugins></span> |
| <span class="nt"></build></span> |
| |
| <span class="nt"></project></span> |
| |
| </code></pre></div></div> |
| <h5 id="2-配置文件">2. 配置文件</h5> |
| <p>新建springboot配置文件src/main/resources/application.yaml，内容如下</p> |
| <div class="language-yaml highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="na">zuul</span><span class="pi">:</span> |
| <span class="na">routes</span><span class="pi">:</span> <span class="c1"># 定义路由转发规则。凡是匹配/helloservice/**的路由都会转发到helloservice服务</span> |
| <span class="na">helloservice</span><span class="pi">:</span> <span class="s">/helloservice/**</span> |
| <span class="na">server</span><span class="pi">:</span> |
| <span class="na">port</span><span class="pi">:</span> <span class="m">8080</span> <span class="c1">#SpringBoot框架的配置，服务启动端口</span> |
| </code></pre></div></div> |
| <p>新建ServiceComb配置文件src/main/resources/microservice.yaml，内容如下</p> |
| <div class="language-yaml highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="na">APPLICATION_ID</span><span class="pi">:</span> <span class="s">helloworld</span> <span class="c1"># 应用ID</span> |
| <span class="na">service_description</span><span class="pi">:</span> |
| <span class="na">name</span><span class="pi">:</span> <span class="s">gateway</span> <span class="c1"># 微服务名</span> |
| <span class="na">version</span><span class="pi">:</span> <span class="s">0.0.1</span> <span class="c1"># 微服务版本</span> |
| <span class="na">servicecomb</span><span class="pi">:</span> |
| <span class="na">service</span><span class="pi">:</span> |
| <span class="na">registry</span><span class="pi">:</span> |
| <span class="na">address</span><span class="pi">:</span> <span class="s">http://127.0.0.1:30100</span> <span class="c1"># 服务注册中心地址 （重要）</span> |
| </code></pre></div></div> |
| |
| <h5 id="3项目入口">3.项目入口</h5> |
| <p>新建启动类 ZuulApplication.java</p> |
| <div class="language-java highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="kn">package</span> <span class="n">com</span><span class="o">.</span><span class="na">servicecomb</span><span class="o">.</span><span class="na">example</span><span class="o">;</span> |
| |
| <span class="kn">import</span> <span class="nn">org.apache.servicecomb.springboot.starter.provider.EnableServiceComb</span><span class="o">;</span> |
| <span class="kn">import</span> <span class="nn">org.springframework.boot.SpringApplication</span><span class="o">;</span> |
| <span class="kn">import</span> <span class="nn">org.springframework.boot.autoconfigure.SpringBootApplication</span><span class="o">;</span> |
| <span class="kn">import</span> <span class="nn">org.springframework.cloud.netflix.zuul.EnableZuulProxy</span><span class="o">;</span> |
| |
| <span class="nd">@SpringBootApplication</span> |
| <span class="nd">@EnableZuulProxy</span> |
| <span class="nd">@EnableServiceComb</span> |
| <span class="kd">public</span> <span class="kd">class</span> <span class="nc">ZuulApplication</span> <span class="o">{</span> |
| <span class="kd">public</span> <span class="kd">static</span> <span class="kt">void</span> <span class="nf">main</span><span class="o">(</span><span class="nc">String</span><span class="o">[]</span> <span class="n">args</span><span class="o">)</span> <span class="o">{</span> |
| <span class="nc">SpringApplication</span><span class="o">.</span><span class="na">run</span><span class="o">(</span><span class="nc">ZuulApplication</span><span class="o">.</span><span class="na">class</span><span class="o">,</span> <span class="n">args</span><span class="o">);</span> |
| <span class="o">}</span> |
| <span class="o">}</span> |
| </code></pre></div></div> |
| |
| <p>新建静态文件 src/main/resources/static/index.html，内容如下 （static目录是按springboot项目规范，属于应用静态文件根目录）</p> |
| <div class="language-html highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="cp"><!DOCTYPE HTML></span> |
| <span class="nt"><html></span> |
| <span class="nt"><head></span> |
| <span class="nt"><meta</span> <span class="na">charset=</span><span class="s">"utf-8"</span><span class="nt">></span> |
| <span class="nt"><link</span> <span class="na">rel=</span><span class="s">"stylesheet"</span> <span class="na">href=</span><span class="s">"https://cdn.bootcss.com/bootstrap/4.0.0/css/bootstrap.min.css"</span> <span class="na">integrity=</span><span class="s">"sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm"</span> <span class="na">crossorigin=</span><span class="s">"anonymous"</span><span class="nt">></span> |
| <span class="nt"><script </span><span class="na">src=</span><span class="s">"https://code.jquery.com/jquery-3.2.1.min.js"</span> <span class="na">crossorigin=</span><span class="s">"anonymous"</span><span class="nt">></script></span> |
| |
| <span class="nt"></head></span> |
| <span class="nt"><body></span> |
| |
| <span class="nt"><div</span> <span class="na">style=</span><span class="s">"width:300px; margin:0 auto ; margin-top: 50px;"</span><span class="nt">></span> |
| |
| <span class="nt"><div</span> <span class="na">class=</span><span class="s">"input-group mb-3"</span><span class="nt">></span> |
| <span class="nt"><input</span> <span class="na">id=</span><span class="s">"username"</span> <span class="na">type=</span><span class="s">"text"</span> <span class="na">class=</span><span class="s">"form-control"</span> <span class="na">placeholder=</span><span class="s">"Username"</span> <span class="na">aria-label=</span><span class="s">"Username"</span> <span class="na">aria-describedby=</span><span class="s">"basic-addon1"</span><span class="nt">></span> |
| <span class="nt"><div</span> <span class="na">class=</span><span class="s">"input-group-prepend"</span><span class="nt">></span> |
| <span class="nt"><button</span> <span class="na">style=</span><span class="s">""</span> <span class="na">type=</span><span class="s">"button"</span> <span class="na">class=</span><span class="s">"btn btn-primary"</span> <span class="na">onclick=</span><span class="s">"testCall()"</span><span class="nt">></span>打招呼<span class="nt"></button></span> |
| <span class="nt"></div></span> |
| <span class="nt"></div></span> |
| <span class="nt"><div</span> <span class="nt">></span> |
| <span class="nt"><div</span> <span class="na">style=</span><span class="s">"height: 200px;"</span> <span class="na">class=</span><span class="s">"form-control"</span> <span class="na">id=</span><span class="s">"resultDiv"</span> <span class="nt">></span> |
| <span class="nt"></div></span> |
| <span class="nt"></div></span> |
| |
| <span class="nt"></div></span> |
| |
| <span class="nt"></body></span> |
| <span class="nt"><script></span> |
| <span class="kd">function</span> <span class="nx">testCall</span><span class="p">()</span> <span class="p">{</span> |
| |
| <span class="kd">var</span> <span class="nx">username</span> <span class="o">=</span> <span class="nx">$</span><span class="p">(</span><span class="dl">"</span><span class="s2">#username</span><span class="dl">"</span><span class="p">).</span><span class="nx">val</span><span class="p">();</span> |
| |
| <span class="k">if</span><span class="p">(</span><span class="o">!</span><span class="nx">username</span><span class="p">){</span> |
| <span class="k">return</span> |
| <span class="p">}</span> |
| |
| <span class="nx">$</span><span class="p">.</span><span class="nx">ajax</span><span class="p">({</span> |
| <span class="na">url</span><span class="p">:</span> <span class="dl">"</span><span class="s2">/helloservice/hello/</span><span class="dl">"</span><span class="o">+</span><span class="nx">username</span><span class="p">,</span> |
| <span class="na">success</span><span class="p">:</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">data</span><span class="p">)</span> <span class="p">{</span> |
| <span class="kd">var</span> <span class="nx">resultDiv</span> <span class="o">=</span> <span class="nb">document</span><span class="p">.</span><span class="nx">getElementById</span><span class="p">(</span><span class="dl">"</span><span class="s2">resultDiv</span><span class="dl">"</span><span class="p">);</span> |
| <span class="nx">console</span><span class="p">.</span><span class="nx">log</span><span class="p">(</span><span class="nx">data</span><span class="p">)</span> |
| <span class="nx">resultDiv</span><span class="p">.</span><span class="nx">innerText</span> <span class="o">=</span> <span class="nx">data</span><span class="p">;</span> |
| <span class="p">},</span> |
| <span class="na">error</span><span class="p">:</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">data</span><span class="p">)</span> <span class="p">{</span> |
| <span class="kd">var</span> <span class="nx">resultDiv</span> <span class="o">=</span> <span class="nb">document</span><span class="p">.</span><span class="nx">getElementById</span><span class="p">(</span><span class="dl">"</span><span class="s2">resultDiv</span><span class="dl">"</span><span class="p">);</span> |
| <span class="nx">console</span><span class="p">.</span><span class="nx">log</span><span class="p">(</span><span class="nx">data</span><span class="p">)</span> |
| <span class="nx">resultDiv</span><span class="p">.</span><span class="nx">innerText</span> <span class="o">=</span> <span class="nx">JSON</span><span class="p">.</span><span class="nx">stringify</span><span class="p">(</span><span class="nx">data</span><span class="p">);</span> |
| <span class="p">}</span> |
| <span class="p">})</span> |
| <span class="p">}</span> |
| <span class="nt"></script></span> |
| <span class="nt"></html></span> |
| </code></pre></div></div> |
| <h5 id="4-启动-1">4. 启动</h5> |
| <p>到此，网关服务器写完，如下在IDEA里面直接启动应用 |
| <img src="/assets/images/zuul/demo-zuulservice-start.jpg" alt="在这里插入图片描述" /></p> |
| |
| <h4 id="三-演示效果">三. 演示效果</h4> |
| <p>浏览器访问http://localhost:8080/ ，如下图。 |
| 在输入框中输入姓名，就可以在下面看到打招呼的信息</p> |
| |
| <p><img src="/assets/images/zuul/demo-run.png" alt="在这里插入图片描述" /></p> |
| |
| <h3 id="总结">总结</h3> |
| <p>从以上的示例可以看出，通过 ServiceComb 结合SpringCloud Zuul 实现服务网关功能只需一些简单的配置。后续可以在网关服务上实现统一的鉴权，日志记录，和自定义过滤器等。</p> |
| |
| <h3 id="参考">参考</h3> |
| <ul> |
| <li>[1] <a href="https://cloud.spring.io/spring-cloud-netflix/multi/multi__router_and_filter_zuul.html">SpringCloud Zuul</a></li> |
| <li>[2] <a href="http://servicecomb.apache.org/cn/docs/quick-start/">ServiceComb</a></li> |
| </ul> |
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