content/references/java-chassis/zh_CN/featured-topics/features/configuration-sources.html

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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>2.0.0 新特性介绍：多配置中心支持</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"> <h1 id="200">2.0.0 新特性介绍：多配置中心支持</h1> <p>很多热心的开发者给 2.0.0 贡献了很多新的特性， @GuoYL123 贡献了 servicecomb-kie 的支持， @160731liupf 贡献了 nacos 的支持，本文介绍开发者如何在自己的项目中使用这些配置中心。</p> <h2 id="java-chassis">Java Chassis 配置源介绍和使用指南</h2> <p>配置中心是微服务架构下一个非常重要的中间件，通过配置中心用户可以增加和删除配置信息，配置信息会通过不同的通知机制（通常包括 PULL 和 PUSH），将配置的变化推送到微服务实例。 java-chassis 允许用户使用不同的配置中心，目前支持用户使用如下几种配置中心：</p> <ul> <li>华为云配置中心</li> </ul> <p>华为云配置中心是华为云CSE产品的一个部件，java-chassis 最早使用它作为配置中心。对接这个配置中心的代码在 config-cc 模块实现。可以从<a href="https://cse-bucket.obs.myhwclouds.com/LocalCSE/Local-CSE-1.0.3.zip">轻量化微服务引擎</a>下载本地使用的版本。也可以直接访问华为云 <a href="https://console.huaweicloud.com/servicestage">ServiceStage</a> 产品，使用在线的版本。</p> <p>使用华为云配置中心，需要在项目中引入如下依赖：</p> <pre><code class="language-xml"><dependency> <groupId>org.apache.servicecomb</groupId> <artifactId>config-cc</artifactId> </dependency> </code></pre> <p>然后在配置文件 microservice.yaml 中增加如下配置项：</p> <pre><code class="language-yaml">servicecomb: config: client: serverUri: http://127.0.0.1:30113 refreshMode: 0 refresh_interval: 5000 refreshPort: 30114 </code></pre> <p>华为云配置中心的其他配置项含义如下：</p> <table> <thead> <tr> <th>配置项名</th> <th>描述</th> </tr> </thead> <tbody> <tr> <td>servicecomb.config.client.refreshMode</td> <td>应用配置的刷新方式，<code>0</code>为config-center主动push，<code>1</code>为client周期pull，默认为<code>0</code></td> </tr> <tr> <td>servicecomb.config.client.refreshPort</td> <td>config-center推送配置的端口</td> </tr> <tr> <td>servicecomb.config.client.tenantName</td> <td>应用的租户名称</td> </tr> <tr> <td>servicecomb.config.client.serverUri</td> <td>config-center访问地址，格式为<code>http(s)://{ip}:{port}</code>，以<code>,</code>分隔多个地址</td> </tr> <tr> <td>servicecomb.config.client.refresh_interval</td> <td>pull模式下刷新配置项的时间间隔，单位为毫秒，默认值为30000</td> </tr> </tbody> </table> <ul> <li>使用 servicecomb-kie</li> </ul> <p><a href="https://github.com/apache/servicecomb-kie">servicecomb-kie</a> 是全新设计的配置中心。从 2.0.0 版本开始， java-chassis 支持使用 servicecomb-kie。从 2.0.1 版本开始， java-chassis 默认使用long polling 拉取 servicecomb-kie 配置，来节省间隔轮询带来的网络消耗。 servicecomb-kie 的安装指导可以参考官网文档。在 java-chassis 中使用 servicecomb-kie，需要引入下面的依赖：</p> <pre><code class="language-xml"><dependency> <groupId>org.apache.servicecomb</groupId> <artifactId>config-kie</artifactId> </dependency> </code></pre> <p>然后在配置文件 microservice.yaml 中增加如下配置项：</p> <pre><code class="language-yaml">servicecomb: kie: serverUri: http://127.0.0.1:30110 refresh_interval: 5000 firstRefreshInterval: 5000 domainName: default </code></pre> <p>servicecomb-kie 的配置项及其含义如下：</p> <table> <thead> <tr> <th>配置项名</th> <th>描述</th> </tr> </thead> <tbody> <tr> <td>servicecomb.kie.domainName</td> <td>区域名称，默认为default</td> </tr> <tr> <td>servicecomb.kie.serverUri</td> <td>servicecomb-kie访问地址，格式为<code>http(s)://{ip}:{port}</code>，以<code>,</code>分隔多个地址</td> </tr> <tr> <td>servicecomb.kie.refresh_interval</td> <td>pull模式下刷新配置项的时间间隔，单位为毫秒，默认值为3000</td> </tr> <tr> <td>servicecomb.kie.firstRefreshInterval</td> <td>pull模式下启动过程中首次刷新时间间隔，单位为毫秒，默认值为3000</td> </tr> </tbody> </table> <ul> <li>使用 nacos</li> </ul> <p><a href="https://github.com/alibaba/nacos">nacos</a> 是 alibaba 提供的配置中心。 java-chassis 从 2.0.0 版本支持 nacos。 nacos的下载安装请参考官网介绍。 </p> <p>使用nacos，需要在项目中引入如下依赖：</p> <pre><code class="language-xml"><dependency> <groupId>org.apache.servicecomb</groupId> <artifactId>config-nacos</artifactId> </dependency> </code></pre> <p>然后在配置文件 microservice.yaml 中增加如下配置项：</p> <pre><code class="language-yaml">servicecomb: nacos: serverUri: http://127.0.0.1:8848 group: DEFAULT_GROUP dataId: example </code></pre> <ul> <li>使用 Apollo</li> </ul> <p><a href="https://github.com/ctripcorp/apollo">Apollo</a> 是携程框架部门研发的分布式配置中心。 Apollo的下载安装请参考官网介绍。 </p> <pre><code class="language-xml"><dependency> <groupId>org.apache.servicecomb</groupId> <artifactId>config-apollo</artifactId> </dependency> </code></pre> <p>然后在配置文件 microservice.yaml 中增加如下配置项：</p> <pre><code class="language-yaml">apollo: config: serverUri: http://127.0.0.1:8070 serviceName: apollo-test env: DEV clusters: test-cluster namespace: application token: xxx refreshInterval: 30 firstRefreshInterval: 0 </code></pre> <h2 id="_1">参与配置源的开发和贡献</h2> <p>2.0.0 版本提供了4种配置源的支持，如果采用 Spring Boot 运行模式，由于 Java Chassis 继承和适配了 Spring Boot 的配置源，因此 Spring Boot 采用的配置源也可以平滑的被 Java Chassis 应用程序使用。比如 Java Chassis 在 Spring Boot 集成模式下使用 application.yml 作为配置文件，可以使用 git 作为动态配置源。 </p> <p>因此， Java Chassis 已经支持大部分开发者能够使用的配置源。然而，目前的支持仍然是不够的，每一个不同的配置中心都提供了非常独特的功能， Java Chassis 只是集成了它们极少的核心功能，维护一个配置中心的支持，需要长期大量的应用验证，才能够把功能做的稳定和强大。因此，配置中心的支持还需要开发者帮助持续的贡献代码。</p> <p>Java Chassis 的配置扩展是基于 <a href="https://github.com/Netflix/archaius">archaius</a>，开发者只需要实现 <code>ConfigCenterConfigurationSource</code>, 即可以接入其他配置中心。 Java Chassis 的源码目录 config-cc， config-apollo, config-kie, config-nacos 分别实现了这个接口。 </p> <ul> <li><a href="https://github.com/apache/servicecomb-java-chassis/pull/1405">nacos 支持PR</a></li> <li><a href="https://github.com/apache/servicecomb-java-chassis/pull/1518">servicecomb-kie 支持PR</a></li> <li><a href="http://localhost:8000/config/general-config/">Java Chassis 通用配置说明</a></li> </ul> </div> </div><footer> <hr/> <div role="contentinfo">  </div> Built with <a href="https://www.mkdocs.org/">MkDocs</a> using a <a 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