https://docs.dapr.io/zh-hans/developing-applications/sdks/java/java-jobs/Recent content in 作业 on Dapr 文档库Hugozh-hanshttps://docs.dapr.io/zh-hans/developing-applications/sdks/java/java-jobs/java-jobs-howto/Mon, 01 Jan 0001 00:00:00 +0000https://docs.dapr.io/zh-hans/developing-applications/sdks/java/java-jobs/java-jobs-howto/<p>在本演示中，我们将调度一个 Dapr Job。调度的 Job 将触发同一应用中注册的端点。使用<a href="https://github.com/dapr/java-sdk/tree/master/examples/src/main/java/io/dapr/examples/jobs">提供的 Jobs 示例</a>，你将：</p> <ul> <li>调度一个 Job <a href="https://github.com/dapr/java-sdk/blob/master/examples/src/main/java/io/dapr/examples/jobs/DemoJobsClient.java">Job 调度示例</a></li> <li>注册一个端点，供 dapr sidecar 在触发时调用 <a href="https://github.com/dapr/java-sdk/blob/master/examples/src/main/java/io/dapr/examples/jobs/DemoJobsSpringApplication.java">端点注册</a></li> </ul> <p>本示例使用<a href="https://github.com/dapr/cli#install-dapr-on-your-local-machine-self-hosted">自托管模式</a>下 <code>dapr init</code> 的默认配置。</p> <h2 id="前置条件">前置条件</h2> <ul> <li><a href="https://docs.dapr.io/getting-started">Dapr CLI 和已初始化的环境</a>。</li> <li>Java JDK 11（或更高版本）： <ul> <li><a href="https://www.oracle.com/java/technologies/downloads">Oracle JDK</a>，或</li> <li>OpenJDK</li> </ul> </li> <li><a href="https://maven.apache.org/install.html">Apache Maven</a>，版本 3.x。</li> <li><a href="https://www.docker.com/products/docker-desktop">Docker Desktop</a></li> </ul> <h2 id="设置环境">设置环境</h2> <p>克隆 <a href="https://github.com/dapr/java-sdk">Java SDK 仓库</a> 并进入该目录。</p> <div class="highlight"><pre tabindex="0" style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span>git clone https://github.com/dapr/java-sdk.git </span></span><span style="display:flex;"><span><span style="color:#204a87">cd</span> java-sdk </span></span></code></pre></div><p>运行以下命令以安装使用 Dapr Java SDK 运行 jobs 示例所需的要求。</p> <div class="highlight"><pre tabindex="0" style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span>mvn clean install -DskipTests </span></span></code></pre></div><p>从 Java SDK 根目录进入示例目录。</p> <div class="highlight"><pre tabindex="0" style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span><span style="color:#204a87">cd</span> examples </span></span></code></pre></div><p>运行 Dapr sidecar。</p> <div class="highlight"><pre tabindex="0" style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-sh" data-lang="sh"><span style="display:flex;"><span>dapr run --app-id jobsapp --dapr-grpc-port <span style="color:#0000cf;font-weight:bold">51439</span> --dapr-http-port <span style="color:#0000cf;font-weight:bold">3500</span> --app-port <span style="color:#0000cf;font-weight:bold">8080</span> </span></span></code></pre></div><blockquote> <p>现在，Dapr 正在 <code>http://localhost:3500</code> 监听 HTTP 请求，在 <code>http://localhost:51439</code> 监听内部 Jobs gRPC 请求。</p>