| <!DOCTYPE html> |
| <html class="writer-html5" lang="en" > |
| <head> |
| <meta charset="utf-8" /> |
| <meta http-equiv="X-UA-Compatible" content="IE=edge" /> |
| <meta name="viewport" content="width=device-width, initial-scale=1.0" /> |
| <link rel="shortcut icon" href="../../img/favicon.ico" /> |
| <title>File service - ServiceComb Java Chassis 开发指南</title> |
| <link rel="stylesheet" href="../../css/theme.css" /> |
| <link rel="stylesheet" href="../../css/theme_extra.css" /> |
| <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/10.5.0/styles/github.min.css" /> |
| |
| <script> |
| // Current page data |
| var mkdocs_page_name = "File service"; |
| var mkdocs_page_input_path = "featured-topics/application-porter/file-service.md"; |
| var mkdocs_page_url = null; |
| </script> |
| |
| <script src="../../js/jquery-3.6.0.min.js" defer></script> |
| <!--[if lt IE 9]> |
| <script src="../../js/html5shiv.min.js"></script> |
| <![endif]--> |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/10.5.0/highlight.min.js"></script> |
| <script>hljs.initHighlightingOnLoad();</script> |
| </head> |
| |
| <body class="wy-body-for-nav" role="document"> |
| |
| <div class="wy-grid-for-nav"> |
| <nav data-toggle="wy-nav-shift" class="wy-nav-side stickynav"> |
| <div class="wy-side-scroll"> |
| <div class="wy-side-nav-search"> |
| <a href="../../index.html" class="icon icon-home"> ServiceComb Java Chassis 开发指南 |
| </a> |
| </div> |
| |
| <div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="Navigation menu"> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../../toc.html">目录</a> |
| </li> |
| </ul> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../../index.html">概述</a> |
| </li> |
| </ul> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../../start/catalog.html">快速入门</a> |
| </li> |
| </ul> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../../start/design.html">设计选型参考</a> |
| </li> |
| </ul> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../../build-provider/definition/service-definition.html">微服务定义</a> |
| </li> |
| </ul> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../../build-provider/catalog.html">开发服务提供者</a> |
| </li> |
| </ul> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../../build-consumer/catalog.html">开发服务消费者</a> |
| </li> |
| </ul> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../../general-development/catalog.html">通用功能开发</a> |
| </li> |
| </ul> |
| <p class="caption"><span class="caption-text">多样化的通信协议功能参考</span></p> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../../transports/introduction.html">多协议介绍</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../transports/rest-over-servlet.html">REST over Servlet</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../transports/rest-over-vertx.html">REST over Vertx</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../transports/http2.html">REST over HTTP2</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../transports/highway-rpc.html">Highway</a> |
| </li> |
| </ul> |
| <p class="caption"><span class="caption-text">多样化的服务注册与发现功能参考</span></p> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../../registry/introduction.html">注册发现说明</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../registry/service-center.html">使用服务中心</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../registry/local-registry.html">本地注册发现</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../registry/distributed.html">去中心化注册发现</a> |
| </li> |
| </ul> |
| <p class="caption"><span class="caption-text">管理服务配置</span></p> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../../config/general-config.html">通用配置说明</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../config/read-config.html">在程序中读取配置信息</a> |
| </li> |
| </ul> |
| <p class="caption"><span class="caption-text">服务治理功能参考</span></p> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../../references-handlers/intruduction.html">处理链介绍</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../references-handlers/loadbalance.html">负载均衡</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../references-handlers/ratelimit.html">限流</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../references-handlers/router.html">灰度发布</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../references-handlers/fault-injection.html">故障注入</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../references-handlers/governance.html">流量特征治理</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../references-handlers/fail-retry.html">快速失败和重试</a> |
| </li> |
| </ul> |
| <p class="caption"><span class="caption-text">网关功能参考</span></p> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../../edge/open-service.html">介绍</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../edge/by-servicecomb-sdk.html">使用 Edge Service 做网关</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../edge/zuul.html">使用 `zuul` 和 `spring cloud gateway` 做网关</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../edge/nginx.html">nginx 网关简单介绍</a> |
| </li> |
| </ul> |
| <p class="caption"><span class="caption-text">安全特性参考</span></p> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../../references-handlers/publickey.html">公钥认证</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../security/tls.html">使用TLS通信</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../security/shi-yong-rsa-ren-zheng.html">使用RSA认证</a> |
| </li> |
| </ul> |
| <p class="caption"><span class="caption-text">服务打包和运行</span></p> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../../packaging/standalone.html">以standalone模式打包</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../packaging/web-container.html">以WEB容器模式打包</a> |
| </li> |
| </ul> |
| <p class="caption"><span class="caption-text">专题文章</span></p> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../../using-java-chassis-in-spring-boot/using-java-chassis-in-spring-boot.html">在Spring Boot中使用java chassis</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../features.html">新功能介绍系列文章</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../compatibility.html">兼容问题和兼容性策略</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../upgrading.html">升级指导系列文章</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../performance.html">性能问题分析和调优</a> |
| </li> |
| </ul> |
| <p class="caption"><span class="caption-text">常用配置项参考</span></p> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../../config-reference/rest-transport-client.html">REST Transport Client 配置项</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../config-reference/config-center-client.html">Config Center Client 配置项</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../config-reference/service-center-client.html">Service Center Client 配置项</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../config-reference/kie-client.html">ServiceComb Kie Client 配置项</a> |
| </li> |
| </ul> |
| <p class="caption"><span class="caption-text">常见问题</span></p> |
| <ul> |
| <li class="toctree-l1"><a class="reference internal" href="../../question-and-answer/faq.html">FAQ</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../question-and-answer/question_answer.html">Q & A</a> |
| </li> |
| <li class="toctree-l1"><a class="reference internal" href="../../question-and-answer/interface-compatibility.html">微服务接口兼容常见问题</a> |
| </li> |
| </ul> |
| </div> |
| </div> |
| </nav> |
| |
| <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"> |
| <nav class="wy-nav-top" role="navigation" aria-label="Mobile navigation menu"> |
| <i data-toggle="wy-nav-top" class="fa fa-bars"></i> |
| <a href="../../index.html">ServiceComb Java Chassis 开发指南</a> |
| |
| </nav> |
| <div class="wy-nav-content"> |
| <div class="rst-content"><div role="navigation" aria-label="breadcrumbs navigation"> |
| <ul class="wy-breadcrumbs"> |
| <li><a href="../../index.html" class="icon icon-home" alt="Docs"></a> »</li> |
| <li>File service</li> |
| <li class="wy-breadcrumbs-aside"> |
| </li> |
| </ul> |
| <hr/> |
| </div> |
| <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article"> |
| <div class="section" itemprop="articleBody"> |
| |
| <p>文件上传功能、用户管理功能都只需要提供REST接口,在技术选型上,使用轻量级REST框架。开发新的微服务都涉及到配置微服务信息,写一个新的Main函数,这些公共步骤在文档前面已经描述,后续文档会省略这些内容。</p> |
| <ul> |
| <li>增加依赖关系</li> |
| </ul> |
| <pre><code> <dependency> |
| <groupId>org.apache.servicecomb</groupId> |
| <artifactId>solution-basic</artifactId> |
| </dependency> |
| </code></pre> |
| <ul> |
| <li>定义服务接口</li> |
| </ul> |
| <p>服务接口定义上有3种选择:RPC、Spring MVC、JAX RS。 这里选择了Sping MVC,相比RPC需要额外增加Annotation,灵活性在于接口即可以通过RPC的方式在服务内部访问,也可以通过浏览器访问,期望前台js脚本开发者也能够对照生成的契约完成开发。</p> |
| <pre><code>@RestSchema(schemaId = "file") |
| @RequestMapping(path = "/") |
| public class FileServiceEndpoint { |
| @Autowired |
| private FileService fileService; |
| |
| /** |
| * 上传文件接口,用户上传一个文件,返回文件ID。 |
| */ |
| @PostMapping(path = "/upload", produces = MediaType.TEXT_PLAIN_VALUE) |
| public String uploadFile(@RequestPart(name = "fileName") MultipartFile file) { |
| return fileService.uploadFile(file); |
| } |
| |
| /** |
| * 删除文件接口。指定ID,返回删除成功还是失败. |
| */ |
| @DeleteMapping(path = "/delete", produces = MediaType.APPLICATION_JSON_VALUE) |
| public boolean deleteFile(@RequestParam(name = "id") String id) { |
| return fileService.deleteFile(id); |
| } |
| } |
| </code></pre> |
| <p>为了实现不同方式的文件存储,将实现抽象出来FileService。为了简单,当前只提供了本地文件实现。这个实现限制了该服务无法进行多实例部署。可以考虑使用对象存储服务器、分布式文件系统等满足存储要求。</p> |
| <ul> |
| <li>设置临时目录</li> |
| </ul> |
| <p>需要在microservice.yaml中增加servicecomb.uploads.directory配置项,指定临时目录的路径。需要保证目录有写权限。默认情况下如果没设置临时目录,不允许启用上传功能。如果使用网关,网关也需要增加这个配置项。</p> |
| <ul> |
| <li>开发测试HTML,访问上传服务</li> |
| </ul> |
| <p>为了测试开发的接口,可以写一个HTML程序。注意name参数需要和接口定义的名称一样。</p> |
| <pre><code><!DOCTYPE html> |
| <html> |
| <head> |
| <title>Upload Example</title> |
| </head> |
| <body> |
| <h2>Upload Example</h2> |
| <hr/> |
| <form method="POST" enctype="multipart/form-data" |
| action="http://localhost:9091/upload"> |
| <p> |
| File Name: <input type="file" name="fileName" /> |
| </p> |
| <p> |
| <input type="submit" value="Upload" /> |
| </p> |
| </form> |
| </body> |
| </html> |
| </code></pre> |
| <p>可以使用Postman等工具测试删除接口:</p> |
| <pre><code>DELETE http://localhost:9091/delete?id=ba6bd8a2-d31a-42cd-a1be-9fb3d6ab4c82 |
| </code></pre> |
| <p>还可以开发一个客户端测试这些接口,对于自动化测试用例是非常有用的。这里不再详细说明。</p> |
| |
| </div> |
| </div><footer> |
| |
| <hr/> |
| |
| <div role="contentinfo"> |
| <!-- Copyright etc --> |
| </div> |
| |
| Built with <a href="https://www.mkdocs.org/">MkDocs</a> using a <a href="https://github.com/readthedocs/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>. |
| </footer> |
| |
| </div> |
| </div> |
| |
| </section> |
| |
| </div> |
| |
| <div class="rst-versions" role="note" aria-label="Versions"> |
| <span class="rst-current-version" data-toggle="rst-current-version"> |
| |
| |
| |
| </span> |
| </div> |
| <script>var base_url = '../..';</script> |
| <script src="../../js/theme_extra.js" defer></script> |
| <script src="../../js/theme.js" defer></script> |
| <script src="../../search/main.js" defer></script> |
| <script defer> |
| window.onload = function () { |
| SphinxRtdTheme.Navigation.enable(true); |
| }; |
| </script> |
| |
| </body> |
| </html> |