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<h1 id="java-chassis-porter">Java-Chassis 入门指南 - 开发 porter 应用</h1>
<p>示例项目包含如下章节：</p>
<ul>
<li><a href="application-porter/user-story.html">User Story</a></li>
<li><a href="application-porter/design.html">设计微服务</a></li>
<li><a href="application-porter/porter-website.html">开发界面(porter-website)</a></li>
<li><a href="application-porter/file-service.html">开发文件上传功能(file-service)</a></li>
<li><a href="application-porter/gateway-service.html">开发网关(gateway-service)</a></li>
<li><a href="application-porter/user-service.html">使用MyBatis访问数据库(user-service)</a></li>
<li><a href="application-porter/authentication.html">进行认证和鉴权设计</a></li>
<li><a href="application-porter/https.html">网关HTTPS安全配置</a></li>
</ul>
<p>示例项目的出发点是帮助开发者开发一个完整的微服务应用。通过一个典型的应用场景，展现一个微服务应用需要解决那些问题，在不同的章节里面，会详细解释解决解决这些问题的技术原理和实现过程。</p>
<p>这个应用场景，是通过收集了一些用户的真实业务场景提取出来的。具体包括：</p>
<ol>
<li>
<p>一个推荐的微服务设计方案；</p>
</li>
<li>
<p>认证鉴权；</p>
</li>
<li>
<p>使用mybatis访问数据库；</p>
</li>
<li>
<p>使用html+js提供界面服务；</p>
</li>
<li>
<p>上传文件；</p>
</li>
<li>
<p>使用网关和配置HTTPS；</p>
</li>
</ol>
<p>在这个应用中，尽可能让服务小、每个微服务完全独立，没有代码上的依赖，服务之间通过REST接口相互访问。为了达到这个目的，可能会有些重复代码（包括配置类文件如pom.xml、数据模型类文件等）。开发者可以结合实际情况选择是否提供公共模块，来避免这种情况。在这个项目中选择的是用重复代码来换取自由度的方案。</p>
<p>在实际的代码中，我们还会遵循其他一些和微服务开发有关的原则，包括无状态设计等。这里的例子的目的是搭建一个商业可用的微服务，因此我们会在架构设计、方案设计上也给出一定的建议以及说明这样处理的目的。</p>
<p>本专题的涉及的代码均托管在github，参考 <a href="https://github.com/apache/servicecomb-samples/tree/master/porter_lightweight">Porter应用</a> 。开发者可以clone一份供学习使用，或者作为正式项目的模板。</p>
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