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<meta itemprop="description" content="介绍如何使用Java Chassis框架快速运行微服务应用">
<meta itemprop="dateModified" content="September 03, 2017">
<div class="page__inner-wrap">
<header>
<h1 class="page__title" itemprop="headline">Java-Chassis 入门指南
</h1>
</header>
<section class="page__content" itemprop="text">
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<!-- <header><h4 class="nav__title"><i class="fa fa-file-text"></i> 在本页上</h4></header> -->
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<li><a href="#安装-java-开发环境" id="markdown-toc-安装-java-开发环境">安装 Java 开发环境</a></li>
<li><a href="#运行-service-center" id="markdown-toc-运行-service-center">运行 Service Center</a></li>
<li><a href="#创建第一个微服务" id="markdown-toc-创建第一个微服务">创建第一个微服务</a></li>
<li><a href="#运行微服务应用" id="markdown-toc-运行微服务应用">运行微服务应用</a></li>
<li><a href="#下一步" id="markdown-toc-下一步">下一步</a></li>
</ul>
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</aside>
<h2 id="安装-java-开发环境">安装 Java 开发环境</h2>
<ul>
<li>
<p>安装<strong>git</strong>,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" target="_blank">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" target="_blank">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" target="_blank">Maven安装教程</a></p>
</li>
<li>
<p>下载ServiceComb-Sample</p>
<div class="language-bash highlighter-rouge"><div class="highlight"><pre class="highlight"><code> git clone https://github.com/apache/servicecomb-samples.git
<span class="nb">cd </span>servicecomb-samples/java-chassis-samples/bmi
mvn clean <span class="nb">install</span>
</code></pre></div> </div>
</li>
</ul>
<h2 id="运行-service-center">运行 Service Center</h2>
<p><strong>ServiceComb</strong> 微服务框架中,<strong>Service Center</strong> 提供服务注册及服务发现功能,可直接使用 Docker 运行。</p>
<div class="language-bash highlighter-rouge"><div class="highlight"><pre class="highlight"><code>docker pull servicecomb/service-center
docker run <span class="nt">-d</span> <span class="nt">-p</span> 30100:30100 servicecomb/service-center:latest
</code></pre></div></div>
<p><em>您可以通过阅读<a href="/cn/docs/products/service-center/install/">环境安装</a>获取在本地以二进制方式运行Service Center的方法。</em></p>
<h2 id="创建第一个微服务">创建第一个微服务</h2>
<p>本指南将以一个简单的 <strong>体质指数(BMI)</strong> 应用开展微服务之旅。<a href="https://baike.baidu.com/item/%E4%BD%93%E8%B4%A8%E6%8C%87%E6%95%B0" target="_blank">体质指数</a>主要用于衡量人体胖瘦程度。该应用主要包含两个微服务:</p>
<ul>
<li>
<p><strong>体质指数计算器</strong>:负责处理运算事务。</p>
</li>
<li>
<p><strong>体质指数界面</strong>:提供用户界面及网关服务。</p>
</li>
</ul>
<p>其运行流程为:<br />
<img src="/assets/images/quick-start-sample-workflow.png" alt="体质指数应用运行流程" class="align-center" /></p>
<p>其中,虚线表示服务注册及服务发现的过程。</p>
<h2 id="运行微服务应用">运行微服务应用</h2>
<ol>
<li>
<p>进入 <strong>体质指数</strong> 应用代码目录。</p>
<div class="language-bash highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nb">cd </span>servicecomb-samples/java-chassis-samples/bmi
</code></pre></div> </div>
<p><strong>注意</strong>:在windows开发环境下,docker是在虚拟机中启动,因此需要修改微服务的 <strong>Service Center</strong> IP地址为虚拟机IP地址。修改2个配置文件[calculator|webapp]/src/main/resources/microservice.yaml,将其中<a>http://127.0.0.1:30100</a>修改为<a>http://192.168.99.100:30100</a>,其中192.168.99.100是虚拟机IP,需要与开发环境中的虚拟机IP保持一致。</p>
</li>
<li>
<p>启动 <strong>体质指数计算器</strong><strong>体质指数界面</strong> 微服务,分别执行以下指令:</p>
<div class="language-bash highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="nb">cd </span>calculator<span class="p">;</span> mvn spring-boot:run
<span class="nb">cd </span>webapp<span class="p">;</span> mvn spring-boot:run
</code></pre></div> </div>
</li>
<li>
<p>验证服务。微服务启动完毕后,即可通过 <a>http://localhost:8889</a> 访问 <strong>体质指数</strong> 应用,届时将能看到如下界面,并可输入您的身高和体重信息验证服务是否正常运行。</p>
<p><img src="/assets/images/bmi-interface.png" alt="体质指数应用运行界面" class="align-center" /></p>
</li>
</ol>
<h2 id="下一步">下一步</h2>
<ul>
<li>阅读<a href="/cn/docs/products/java-chassis/bmi/"><strong>体质指数</strong>微服务应用快速开发</a></li>
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