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| <meta itemprop="headline" content="运行模式"> |
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| <div class="page__inner-wrap"> |
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| <header> |
| <h1 class="page__title" itemprop="headline">运行模式 |
| </h1> |
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| </header> |
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| <section class="page__content" itemprop="text"> |
| <aside class="sidebar__right"> |
| <nav class="toc"> |
| <!-- <header><h4 class="nav__title"><i class="fa fa-file-text"></i> 在本页上</h4></header> --> |
| <ul class="toc__menu" id="markdown-toc"> |
| <li><a href="#standalone模式" id="markdown-toc-standalone模式">standalone模式</a> <ul> |
| <li><a href="#操作步骤" id="markdown-toc-操作步骤">操作步骤</a></li> |
| </ul> |
| </li> |
| <li><a href="#web容器模式" id="markdown-toc-web容器模式">WEB容器模式</a> <ul> |
| <li><a href="#开发示例" id="markdown-toc-开发示例">开发示例</a></li> |
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| <p>微服务框架当前提供了两种部署运行模式:standalone模式和web容器模式。推荐使用<strong>standalone模式</strong>拉起服务进程。</p> |
| <h2 id="standalone模式">standalone模式</h2> |
| <p>一个Standalone的容器,以简单的Main加载Spring启动,因为服务通常不需要Tomcat/JBoss等Web容器的特性,没必要用Web容器去加载服务。微框架提供了standalone部署运行模式,服务容器只是一个简单的Main方法,并加载一个简单的Spring容器,用于暴露服务。</p> |
| |
| <h3 id="操作步骤">操作步骤</h3> |
| |
| <ul> |
| <li> |
| <p><strong>步骤1</strong> 编写Main函数,初始化日志和加载服务配置,内容如下:</p> |
| |
| <div class="language-java highlighter-rouge"><div class="highlight"><pre class="highlight"><code> <span class="kn">import</span> <span class="nn">org.apache.servicecomb.foundation.common.utils.BeanUtils</span><span class="o">;</span> |
| <span class="kn">import</span> <span class="nn">org.apache.servicecomb.foundation.common.utils.Log4jUtils</span><span class="o">;</span> |
| <span class="kd">public</span> <span class="kd">class</span> <span class="nc">MainServer</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="kd">throws</span> <span class="nc">Exception</span> <span class="o">{</span> |
| <span class="err"> </span><span class="nc">Log4jUtils</span><span class="o">.</span><span class="na">init</span><span class="o">();</span> <span class="err">#日志初始化</span> |
| <span class="err"> </span><span class="nc">BeanUtils</span><span class="o">.</span><span class="na">init</span><span class="o">();</span> <span class="err">#</span> <span class="nc">Spring</span> <span class="n">bean</span><span class="err">初始化</span> |
| <span class="c1">// other codes omitted</span> |
| <span class="o">}</span> |
| <span class="o">}</span> |
| </code></pre></div> </div> |
| </li> |
| <li> |
| <p><strong>步骤2</strong> 运行MainServer即可启动该微服务进程,向外暴露服务。</p> |
| |
| <p>注意:如果使用的是rest网络通道,需要将pom中的transport改为使用cse-transport-rest-vertx包。</p> |
| </li> |
| </ul> |
| |
| <h2 id="web容器模式">WEB容器模式</h2> |
| <p>如果需要将该微服务加载到web容器中启动运行时,需要新建一个servlet工程包装一下,该servlet工程,根据需要,可以不写或写少量的引导代码即可。</p> |
| |
| <h3 id="开发示例">开发示例</h3> |
| |
| <ul> |
| <li><strong>步骤1 新建servlet工程,修改web.xml文件如下:</strong></li> |
| </ul> |
| |
| <div class="language-xml highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nt"><web-app></span> |
| <span class="nt"><context-param></span> |
| <span class="nt"><param-name></span>contextConfigLocation<span class="nt"></param-name></span> |
| <span class="nt"><param-value></span> |
| classpath*:META-INF/spring/*.bean.xml |
| classpath*:app-config.xml |
| <span class="nt"></param-value></span> |
| <span class="nt"></context-param></span> |
| <span class="nt"><listener></span> |
| <span class="nt"><listener-class></span>org.apache.servicecomb.transport.rest.servlet.RestServletContextListener<span class="nt"></listener-class></span> |
| <span class="nt"></listener></span> |
| |
| <span class="nt"><servlet></span> |
| <span class="nt"><servlet-name></span>RestServlet<span class="nt"></servlet-name></span> |
| <span class="nt"><servlet-class></span>org.apache.servicecomb.transport.rest.servlet.RestServlet<span class="nt"></servlet-class></span> |
| <span class="nt"><load-on-startup></span>1<span class="nt"></load-on-startup></span> |
| <span class="nt"><async-supported></span>true<span class="nt"></async-supported></span> |
| <span class="nt"></servlet></span> |
| <span class="nt"><servlet-mapping></span> |
| <span class="nt"><servlet-name></span>RestServlet<span class="nt"></servlet-name></span> |
| <span class="nt"><url-pattern></span>/rest/*<span class="nt"></url-pattern></span> |
| <span class="nt"></servlet-mapping></span> |
| <span class="nt"></web-app></span> |
| </code></pre></div></div> |
| |
| <ul> |
| <li><strong>步骤2 修改pom文件</strong></li> |
| </ul> |
| |
| <div class="language-xml highlighter-rouge"><div class="highlight"><pre class="highlight"><code><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>transport-rest-servlet<span class="nt"></artifactId></span> |
| <span class="nt"></dependency></span> |
| <span class="nt"></dependencies></span> |
| <span class="nt"><build></span> |
| <span class="nt"><finalName></span>test<span class="nt"></finalName></span> |
| <span class="nt"></build></span> |
| </code></pre></div></div> |
| |
| <p><strong>注意事项:</strong></p> |
| <ol> |
| <li>RESTful调用应该与web容器中其他静态资源调用(比如html、js等等)隔离开来,所以webroot后一段应该还有一层关键字,比如上面web.xml中举的例子(/test/rest)中的rest。</li> |
| <li>以tomcat为例,默认每个war包都有不同的webroot,这个webroot需要是basePath的前缀,比如webroot为test,则该微服务所有的契约都必须以/test打头。</li> |
| <li>当微服务加载在web容器中,并直接使用web容器开的http、https端口时,因为是使用的web容器的通信通道,所以需要满足web容器的规则。</li> |
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