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            2021年 (5篇)</h2><div class="caret" role="button" aria-label="toggle section" tabindex="0" data-v-95d837d1><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" viewbox="0 0 24 24" class="caret-icon" data-v-95d837d1><path d="M9,19c-0.3,0-0.5-0.1-0.7-0.3c-0.4-0.4-0.4-1,0-1.4l5.3-5.3L8.3,6.7c-0.4-0.4-0.4-1,0-1.4s1-0.4,1.4,0l6,6c0.4,0.4,0.4,1,0,1.4l-6,6C9.5,18.9,9.3,19,9,19z"></path></svg></div></div><div class="items" data-v-95d837d1><!--[--><div class="VPSidebarItem level-1 is-link" data-v-95d837d1 data-v-95d837d1><div class="item" data-v-95d837d1><div class="indicator" data-v-95d837d1></div><a class="VPLink link link" href="/categories/tools/2021/03/10/Quartz%E5%BF%AB%E9%80%9F%E5%85%A5%E9%97%A8" data-v-95d837d1><!--[--><p class="text" data-v-95d837d1><div class="text-color-red mr-[6px]" style="font-weight: 550; display: inline-block;">1</div>Quartz 快速入门</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-95d837d1 data-v-95d837d1><div class="item" data-v-95d837d1><div class="indicator" data-v-95d837d1></div><a class="VPLink link link" href="/categories/tools/2021/03/06/Postman%E5%BF%AB%E9%80%9F%E5%85%A5%E9%97%A8" data-v-95d837d1><!--[--><p class="text" data-v-95d837d1><div class="text-color-orange mr-[6px]" style="font-weight: 550; 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display: inline-block;">5</div>初识 Lombok</p><!--]--></a><!----></div><!----></div><!--]--></div></section></div><!--]--><!--[--><!--]--></nav></aside><div class="VPContent has-sidebar" id="VPContent" data-v-03322d68 data-v-2c336b25><div class="VPDoc has-sidebar has-aside" data-v-2c336b25 data-v-53ed897c><!--[--><!--]--><div class="container" data-v-53ed897c><div class="aside" data-v-53ed897c><div class="aside-curtain" data-v-53ed897c></div><div class="aside-container" data-v-53ed897c><div class="aside-content" data-v-53ed897c><div class="VPDocAside" data-v-53ed897c data-v-3d450548><!--[--><!--]--><!--[--><!--]--><div class="VPDocAsideOutline" role="navigation" data-v-3d450548 data-v-70b38f01><div class="content" data-v-70b38f01><div class="outline-marker" data-v-70b38f01></div><div class="outline-title" role="heading" aria-level="2" data-v-70b38f01>目录</div><nav aria-labelledby="doc-outline-aria-label" data-v-70b38f01><span class="visually-hidden" id="doc-outline-aria-label" data-v-70b38f01> Table of Contents for current page </span><ul class="root" data-v-70b38f01 data-v-e10534d6><!--[--><!--]--></ul></nav></div></div><!--[--><!--]--><div class="spacer" data-v-3d450548></div><!--[--><!--]--><!----><!--[--><!--]--><!--[--><!--]--></div></div></div></div><div class="content" data-v-53ed897c><div class="content-container" data-v-53ed897c><!--[--><!--]--><!----><main class="main" data-v-53ed897c><div style="position:relative;" class="vp-doc _categories_tools_2021_03_10_Quartz%E5%BF%AB%E9%80%9F%E5%85%A5%E9%97%A8" data-v-53ed897c><div><h1 id="quartz-快速入门" tabindex="-1">Quartz 快速入门 <a class="header-anchor" href="#quartz-快速入门" aria-label="Permalink to &quot;Quartz 快速入门&quot;"></a></h1><!----><h2 id="前言" tabindex="-1">前言 <a class="header-anchor" href="#前言" aria-label="Permalink to &quot;前言&quot;"></a></h2><div class="tip custom-block"><p class="custom-block-title">空巢青年们有一句话是什么来着？</p><p>孤独到极致是什么感觉：只有 QQ 邮箱祝你生日快乐。</p></div><p>笔者刚才也去翻了翻 QQ 邮箱以往的邮件，的确每年都有来自它的祝福，而且好几年都没换个花样儿。</p><p>如果你在各类平台都填写过生日信息，这个场景你应该也不陌生：在你填写的生日那天，这些平台比你的男女朋友还准时的出现了，初次见它们的你，一下子感动的不知所措，难道这就是爱吗？</p><p><img src="/assets/202103101320507.-ngOrCE-.png" alt="202103101320507"></p><p>很可惜，不是。这份 “宠爱” 是 “海王” 的 “雨露均沾”，是 “鱼塘塘主” 的 “千篇一律”。它们都是提前设置好的，每天都会进行的定时任务，只要服务器没炸完，它们总会准时准点。</p><p>当然了，除了准点生日祝福，类似的场景一点也不少见。例如：每月 1 号的房贷，每月 9 号的花呗...</p><p>好啦，本篇，笔者就要带你认识一个 Java 领域中知名的开源作业调度（根据时间，执行作业）框架，有了它，你也可以做 “海王”。</p><p><img src="/assets/202103101321066.NiIoGgar.jpg" alt="202103101321066"></p><h2 id="简介" tabindex="-1">简介 <a class="header-anchor" href="#简介" aria-label="Permalink to &quot;简介&quot;"></a></h2><div class="tip custom-block"><p class="custom-block-title">Quartz简介</p><p>Quartz 是 OpenSymphony 开源组织在 Job scheduler（作业调度）领域又一个开源项目，它可以与 J2EE 与 J2SE 应用程序相结合也可以单独使用。</p><p>从最小的独立应用程序到最大的电子商务系统，Quartz 可以用来创建简单或复杂的时间表，以执行数十个、数百个甚至数万个工作。[1]</p></div><p><img src="/assets/202103101321977.lkRxm1dP.jpg" alt="202103101321977"></p><h2 id="简单使用" tabindex="-1">简单使用 <a class="header-anchor" href="#简单使用" aria-label="Permalink to &quot;简单使用&quot;"></a></h2><p>在使用 Quartz 框架前，我们需要先了解一下 Quartz 中的三个核心概念。</p><p><strong>Job（作业/任务）：</strong> 需要执行的具体工作任务。</p><p><strong>Trigger（触发器）：</strong> 在特定的时间触发任务的执行。</p><p><strong>Scheduler（调度器）：</strong> 任务的实际执行者，负责粘合任务和触发器，但记得一个 Job 可以绑定到多个 Trigger，但一个 Trigger 只能服务于一个 Job。</p><p><img src="/assets/202103101322176.H9o5Ws6-.png" alt="202103101322176"></p><p>以 QQ 邮箱发送生日祝福为例，给今天过生日的用户发送生日祝福邮件就是 Job，每天 9 点来执行就是 Trigger。了解完概念之后，接下来和笔者一起先简单的使用一下。</p><h3 id="引入依赖" tabindex="-1">引入依赖 <a class="header-anchor" href="#引入依赖" aria-label="Permalink to &quot;引入依赖&quot;"></a></h3><p>首先，我们创建一个普通的 Maven 项目，然后引入 Quartz 的依赖。</p><div class="tip custom-block"><p class="custom-block-title">笔者说</p><p>Quartz 的 API 在 1.x 和 2.x 区别还是很大的，2.x 系列的 API 采用的是 Domain Specific Language （ DSL）风格，也可以说是流式/链式风格（fluent interface），各种 builder 构建器。</p></div><div class="language-xml vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">xml</span><pre class="shiki shiki-themes github-light github-dark-dimmed vp-code"><code><span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">&lt;</span><span style="--shiki-light:#22863A;--shiki-dark:#8DDB8C;">dependency</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">&gt;</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    &lt;</span><span style="--shiki-light:#22863A;--shiki-dark:#8DDB8C;">groupId</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">&gt;org.quartz-scheduler&lt;/</span><span style="--shiki-light:#22863A;--shiki-dark:#8DDB8C;">groupId</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">&gt;</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    &lt;</span><span style="--shiki-light:#22863A;--shiki-dark:#8DDB8C;">artifactId</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">&gt;quartz&lt;/</span><span style="--shiki-light:#22863A;--shiki-dark:#8DDB8C;">artifactId</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">&gt;</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    &lt;</span><span style="--shiki-light:#22863A;--shiki-dark:#8DDB8C;">version</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">&gt;2.3.0&lt;/</span><span style="--shiki-light:#22863A;--shiki-dark:#8DDB8C;">version</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">&gt;</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">&lt;/</span><span style="--shiki-light:#22863A;--shiki-dark:#8DDB8C;">dependency</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">&gt;</span></span></code></pre></div><h3 id="创建任务" tabindex="-1">创建任务 <a class="header-anchor" href="#创建任务" aria-label="Permalink to &quot;创建任务&quot;"></a></h3><p>创建一个类，实现 Job 接口，然后重写 Job 接口的 execute 方法。在 execute 方法中编写的就是需要执行的具体工作。</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark-dimmed vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> class</span><span style="--shiki-light:#6F42C1;--shiki-dark:#F69D50;"> SimpleJob</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> implements</span><span style="--shiki-light:#6F42C1;--shiki-dark:#6CB6FF;"> Job</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> {</span></span>
<span class="line"></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">    // 需要执行的具体工作</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    @</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">Override</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">    public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> void</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;"> execute</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(JobExecutionContext </span><span style="--shiki-light:#E36209;--shiki-dark:#F69D50;">jobExecutionContext</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">) </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">throws</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> JobExecutionException {</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">        // 输出当前线程和时间</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">        System.out.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">println</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;">&quot;SimpleJob:::&quot;</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> +</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> Thread.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">currentThread</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">().</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">getName</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">() </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">+</span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;"> &quot;:::&quot;</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> +</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> SimpleDateFormat.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">getDateTimeInstance</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">().</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">format</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">new</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;"> Date</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">()));</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    }</span></span>
<span class="line"></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">}</span></span></code></pre></div><p>在使用的时候，需要通过 JobDetail 来绑定好刚创建的类。</p><div class="tip custom-block"><p class="custom-block-title">笔者说</p><p>这个过程，你没有觉得像创建线程一样吗？实现Runnable 接口，然后通过 Thread 来绑定好 Runnable 实现类。</p></div><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark-dimmed vp-code"><code><span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">// 创建任务对象，绑定任务类并为其命名及分组</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">JobDetail</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> jobDetail</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> =</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> JobBuilder.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">newJob</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(SimpleJob.class)</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">withIdentity</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;">&quot;job1&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">, </span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;">&quot;group1&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">)</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">build</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">();</span></span></code></pre></div><h3 id="创建触发器" tabindex="-1">创建触发器 <a class="header-anchor" href="#创建触发器" aria-label="Permalink to &quot;创建触发器&quot;"></a></h3><p>有了任务之后，我们还要为其准备好一个合适的触发器，既然是简单的使用，那我们先来创建一个每隔 3 秒就会触发的简单触发器。</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark-dimmed vp-code"><code><span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">// 创建触发器对象，简单触发器每隔 3 秒执行一次任务</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">Trigger</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> trigger</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> =</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> TriggerBuilder.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">newTrigger</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">()</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">withIdentity</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;">&quot;trigger1&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">, </span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;">&quot;group1&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">)</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">    // 简单触发器</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">withSchedule</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(SimpleScheduleBuilder.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">simpleSchedule</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">()</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">                  .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">withIntervalInSeconds</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#6CB6FF;">3</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">)</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">                  .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">repeatForever</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">())</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">build</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">();</span></span></code></pre></div><h3 id="创建调度器" tabindex="-1">创建调度器 <a class="header-anchor" href="#创建调度器" aria-label="Permalink to &quot;创建调度器&quot;"></a></h3><p>最后，我们创建调度器，利用调度器来粘合任务和触发器，这样任务就会在指定时间触发执行了。</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark-dimmed vp-code"><code><span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">// 创建调度器</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">Scheduler</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> scheduler</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> =</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> StdSchedulerFactory.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">getDefaultScheduler</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">();</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">// 粘合任务和触发器</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">scheduler.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">scheduleJob</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(jobDetail, trigger);</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">// 启动调度器</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">scheduler.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">start</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">();</span></span></code></pre></div><p>简单使用的完整代码如下：</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark-dimmed vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> class</span><span style="--shiki-light:#6F42C1;--shiki-dark:#F69D50;"> Test</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> {</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    </span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">    public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> static</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> void</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;"> main</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">String</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">[] </span><span style="--shiki-light:#E36209;--shiki-dark:#F69D50;">args</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">) </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">throws</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> Exception {</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">        // 创建任务对象，绑定任务类并为任务命名及分组</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">        JobDetail</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> jobDetail</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> =</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> JobBuilder.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">newJob</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(SimpleJob.class)</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">                .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">withIdentity</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;">&quot;job1&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">, </span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;">&quot;group1&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">)</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">                .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">build</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">();</span></span>
<span class="line"></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">        // 创建触发器对象，简单触发器每隔 3 秒执行一次任务</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">        Trigger</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> trigger</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> =</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> TriggerBuilder.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">newTrigger</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">()</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">                .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">withIdentity</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;">&quot;trigger1&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">, </span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;">&quot;group1&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">)</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">                .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">withSchedule</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(SimpleScheduleBuilder.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">simpleSchedule</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">()</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">                        .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">withIntervalInSeconds</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#6CB6FF;">3</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">)</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">                        .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">repeatForever</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">())</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">                .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">build</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">();</span></span>
<span class="line"></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">        // 创建调度器</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">        Scheduler</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> scheduler</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> =</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> StdSchedulerFactory.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">getDefaultScheduler</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">();</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">        // 绑定任务和触发器</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">        scheduler.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">scheduleJob</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(jobDetail, trigger);</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">        // 启动调度器</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">        scheduler.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">start</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">();</span></span>
<span class="line"></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">        // 注意：Quartz会开启子线程，而为了防止主线程结束，我们为主线程设置下休眠</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">        Thread.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">sleep</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#6CB6FF;">60000</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">);</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    }</span></span>
<span class="line"></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">}</span></span></code></pre></div><p><img src="/assets/202103101322327.yaQEawev.gif" alt="202103101322327"></p><h2 id="crontrigger" tabindex="-1">CronTrigger <a class="header-anchor" href="#crontrigger" aria-label="Permalink to &quot;CronTrigger&quot;"></a></h2><p>刚才我们简单使用了一下 Quartz，定时任务按照触发器的设置跑起来了，但这里的触发器 SimpleTrigger ，它只能实现这种周期性触发。而我们前言中提到的，每天指定时间或每月指定时间来触发，用它就有些捉襟见肘了。</p><p>所以 Quartz 中还有一种触发器叫：CronTrigger，而在 CronTrigger 中，可以通过 Cron 表达式来轻松的实现前言中的需求。</p><h3 id="cron表达式" tabindex="-1">Cron表达式 <a class="header-anchor" href="#cron表达式" aria-label="Permalink to &quot;Cron表达式&quot;"></a></h3><p>这个 Cron 表达式，<strong>是由6~7个由空格分隔的时间元素组成，第7个时间元素是可选的</strong> 。</p><div class="tip custom-block"><p class="custom-block-title">笔者说</p><p>秒、分、时、日、月、周、年，这 7 个时间元素能精确的定位到某个时间点，当然一般定位到某年的情况是非常少的，所以 年 这个时间元素是可选的，可以不用指定。</p></div><table><thead><tr><th style="text-align:left;">位置</th><th style="text-align:left;">时间元素</th><th style="text-align:left;">允许值</th><th style="text-align:left;">允许的特殊字符</th></tr></thead><tbody><tr><td style="text-align:left;">1</td><td style="text-align:left;">秒</td><td style="text-align:left;">0 ~ 59</td><td style="text-align:left;">, - * /</td></tr><tr><td style="text-align:left;">2</td><td style="text-align:left;">分</td><td style="text-align:left;">0 ~ 59</td><td style="text-align:left;">, - * /</td></tr><tr><td style="text-align:left;">3</td><td style="text-align:left;">时</td><td style="text-align:left;">0 ~ 23</td><td style="text-align:left;">, - * /</td></tr><tr><td style="text-align:left;">4</td><td style="text-align:left;">日</td><td style="text-align:left;">1 ~ 31</td><td style="text-align:left;">, - * / L W</td></tr><tr><td style="text-align:left;">5</td><td style="text-align:left;">月</td><td style="text-align:left;">1 ~ 12 或 JAN ~ DEC</td><td style="text-align:left;">, - * /</td></tr><tr><td style="text-align:left;">6</td><td style="text-align:left;">周</td><td style="text-align:left;">1 ~ 7 或 SUN ~ SAT</td><td style="text-align:left;">, - * / L #</td></tr><tr><td style="text-align:left;">7</td><td style="text-align:left;">年</td><td style="text-align:left;">空 或 1970 ~ 2099</td><td style="text-align:left;">, - * /</td></tr></tbody></table><p>Cron 表达式到底长成啥样？先打个样儿：<code>0 0 8 14 2 ? 2021</code> ，它代表的是 2021 年 2 月 14 日上午 8 点会触发。</p><p>Cron 表达式的每个时间元素，都可以设置为具体值，这当然很简单。除此之外，笔者再介绍一下 Cron 表达式中允许出现的一些特殊字符。</p><p><strong>? 问号：</strong> 仅用于 日 和 周 元素，表示不指定值，日和周这两个时间元素，必须有一个设置为 ? 。</p><div class="tip custom-block"><p class="custom-block-title">笔者说</p><p>之所以如此，是因为每月的几号一定是星期几吗？例如：2021年的3月10日是星期三，但4月10日就是星期六了... 。所以，<strong>重点记住：日和周两个时间元素不能同时指定具体值，其中一方必须设置为 ? 就行了</strong> 。</p></div><p><strong>* 星号：</strong> 可用于所有时间元素，表示每一个值。例：0 0 8 * * ? 表示每天上午8点触发。</p><p><strong>, 逗号：</strong> 可用于所有时间元素，表示一个列表。例：0 0 8,10,14 * * ? 表示每天上午8点，上午10点，下午14点触发。</p><p><strong>- 中划线：</strong> 可用于所有时间元素，表示一个范围。例：0 0 8 1-3 * ? 表示每月1日到3日的上午8点触发。</p><p><strong>/ 斜杠：</strong> 可用于所有时间元素，x/y，x代表起始值，y代表值的增量。例：0 0 8/2 * * ? 表示每天上午8点开始，每隔两个小时触发一次。</p><p><strong>L：</strong> 仅用于 日 和 周 元素，表示对应时间元素上允许的最后一个值（Last）。例1：0 30 8 L * ? 表示每月最后一天的上午8点30分触发。例2：0 30 8 ? * 3L 表示每月最后一周的星期二触发。</p><div class="tip custom-block"><p class="custom-block-title">笔者说</p><p>由于国外星期是从星期日开始计算，星期日的数字表示是1，因此示例中 3L 的3代表的是星期二。</p></div><p><strong>W：</strong> 仅用于 日 元素，表示指定日期的最近工作日。例：0 0 8 10W * ? 表示每月10号上午8点触发，但如果10号不是工作日那就找最近的工作日。10号是周六，那就找周五；10号是周日，那就找周一。</p><p>有一种特殊的情况是：设置的是1W，如果1号不是工作日，哪怕这时候1号是周六，它也不会去找上月的周五来执行，而是找本月的周一去执行。</p><div class="tip custom-block"><p class="custom-block-title">笔者说</p><p>很多定时任务，都需要在工作日来执行，所以有这么一个符号表示这含义无可厚非。L和W在 日 元素上还可以一起使用，例：* * * LW * ? 表示本月最后一个工作日触发。</p></div><p><strong>#：</strong> 仅用于 周 元素，x#y，y代表对应月份中的第几周，x代表第几周的第几天。例：0 0 8 ? * 3#2：每月第2周的星期二上午8点触发。</p><p>头晕了吧？笔者再提供几个常用的 Cron 表达式给你。</p><table><thead><tr><th style="text-align:left;">Cron 表达式</th><th style="text-align:left;">含义</th></tr></thead><tbody><tr><td style="text-align:left;">0 0 2 1 * ?</td><td style="text-align:left;">每月1日的凌晨2点</td></tr><tr><td style="text-align:left;">0 15 10 ? * MON-FRI</td><td style="text-align:left;">周一到周五每天上午10:15</td></tr><tr><td style="text-align:left;">0 0/30 9-17 * * ?</td><td style="text-align:left;">朝九晚五工作时间内每半小时</td></tr><tr><td style="text-align:left;">0 15 10 L * ?</td><td style="text-align:left;">每月最后一日的上午10:15</td></tr><tr><td style="text-align:left;">0 15 10 ? * 6L</td><td style="text-align:left;">每月的最后一个星期五上午10:15</td></tr><tr><td style="text-align:left;">0 15 10 ? * 6#3</td><td style="text-align:left;">每月的第三个星期五上午10:15</td></tr><tr><td style="text-align:left;">0 10,44 14 ? 3 WED</td><td style="text-align:left;">每年三月的星期三的下午2:10和2:44</td></tr></tbody></table><p>另外，笔者再说一点，Cron 表达式也不仅仅是用于 Quartz 框架，很多与定时任务有关的工具都需要用到 Cron 表达式，所以说熟练掌握编写 Cron 表达式很重要。</p><p>别害怕，笔者再教你一招，市面上有很多在线 Cron 表达式生成器（参考资料 [3] 就是笔者推荐给你的生成器），通过可视化的选择，就可以自动生成 Cron 表达式，而且还可以提供测试执行效果。</p><p><img src="/assets/202103101322366.b7Bvdr2A.png" alt="202103101322366"></p><h3 id="案例实现" tabindex="-1">案例实现 <a class="header-anchor" href="#案例实现" aria-label="Permalink to &quot;案例实现&quot;"></a></h3><p>认识完了 Cron 表达式，我们再用 Cron 表达式实现一下刚才的案例效果吧。</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark-dimmed vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> class</span><span style="--shiki-light:#6F42C1;--shiki-dark:#F69D50;"> Test2</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> {</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    </span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">    public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> static</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> void</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;"> main</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">String</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">[] </span><span style="--shiki-light:#E36209;--shiki-dark:#F69D50;">args</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">) </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">throws</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> Exception {</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">        // 创建任务对象，绑定任务类并为任务命名及分组</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">        JobDetail</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> jobDetail</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> =</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> JobBuilder.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">newJob</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(SimpleJob.class)</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">                .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">withIdentity</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;">&quot;job1&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">, </span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;">&quot;group1&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">)</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">                .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">build</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">();</span></span>
<span class="line"></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">        // 创建触发器对象，通过 Cron 表达式指定每隔 3 秒执行一次任务</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">        Trigger</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> trigger</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> =</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> TriggerBuilder.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">newTrigger</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">()</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">                .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">withIdentity</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;">&quot;trigger1&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">, </span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;">&quot;group1&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">)</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">                .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">withSchedule</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(CronScheduleBuilder.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">cronSchedule</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;">&quot;0/3 * * ? * *&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">))</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">                .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">build</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">();</span></span>
<span class="line"></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">        // 创建调度器</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">        Scheduler</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> scheduler</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> =</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> StdSchedulerFactory.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">getDefaultScheduler</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">();</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">        // 绑定任务和触发器</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">        scheduler.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">scheduleJob</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(jobDetail, trigger);</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">        // 启动调度器</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">        scheduler.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">start</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">();</span></span>
<span class="line"></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">        // Quartz会开启子线程，而为了防止主线程结束，我们为主线程设置下休眠</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">        Thread.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">sleep</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#6CB6FF;">60000</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">);</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    }</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    </span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">}</span></span></code></pre></div><h2 id="spring-boot整合" tabindex="-1">Spring Boot整合 <a class="header-anchor" href="#spring-boot整合" aria-label="Permalink to &quot;Spring Boot整合&quot;"></a></h2><p>Spring 作为 Java 界的顶流框架，怎么可能对 Quartz 没有提供整合呢？但是原生 Spring 整合 Quartz ，配置文件让人头疼，所以咱们使用 Spring Boot 来实现一下 Quartz 整合。</p><h3 id="引入依赖-1" tabindex="-1">引入依赖 <a class="header-anchor" href="#引入依赖-1" aria-label="Permalink to &quot;引入依赖&quot;"></a></h3><div class="language-xml vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">xml</span><pre class="shiki shiki-themes github-light github-dark-dimmed vp-code"><code><span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">&lt;</span><span style="--shiki-light:#22863A;--shiki-dark:#8DDB8C;">dependency</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">&gt;</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    &lt;</span><span style="--shiki-light:#22863A;--shiki-dark:#8DDB8C;">groupId</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">&gt;org.springframework.boot&lt;/</span><span style="--shiki-light:#22863A;--shiki-dark:#8DDB8C;">groupId</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">&gt;</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    &lt;</span><span style="--shiki-light:#22863A;--shiki-dark:#8DDB8C;">artifactId</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">&gt;spring-boot-starter-quartz&lt;/</span><span style="--shiki-light:#22863A;--shiki-dark:#8DDB8C;">artifactId</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">&gt;</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">&lt;/</span><span style="--shiki-light:#22863A;--shiki-dark:#8DDB8C;">dependency</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">&gt;</span></span></code></pre></div><h3 id="创建任务-1" tabindex="-1">创建任务 <a class="header-anchor" href="#创建任务-1" aria-label="Permalink to &quot;创建任务&quot;"></a></h3><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark-dimmed vp-code"><code><span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">@</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">Component</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> class</span><span style="--shiki-light:#6F42C1;--shiki-dark:#F69D50;"> SimpleJob</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> extends</span><span style="--shiki-light:#6F42C1;--shiki-dark:#6CB6FF;"> QuartzJobBean</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> {</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    </span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    @</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">Override</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">    protected</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> void</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;"> executeInternal</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(JobExecutionContext </span><span style="--shiki-light:#E36209;--shiki-dark:#F69D50;">jobExecutionContext</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">) </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">throws</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> JobExecutionException {</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">        // 输出当前线程和时间</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">        System.out.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">println</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;">&quot;SimpleJob:::&quot;</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> +</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> Thread.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">currentThread</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">().</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">getName</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">() </span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">+</span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;"> &quot;:::&quot;</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> +</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> SimpleDateFormat.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">getDateTimeInstance</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">().</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">format</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">new</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;"> Date</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">()));</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    }</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    </span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">}</span></span></code></pre></div><p>之前是实现 Job 接口，这回是继承 QuartzJobBean，其实没有区别。因为 QuartzJobBean 实现自 Job 接口。</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark-dimmed vp-code"><code><span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> abstract</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> class</span><span style="--shiki-light:#6F42C1;--shiki-dark:#F69D50;"> QuartzJobBean</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> implements</span><span style="--shiki-light:#6F42C1;--shiki-dark:#6CB6FF;"> Job</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> { </span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    ....</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">}</span></span></code></pre></div><h3 id="编写配置" tabindex="-1">编写配置 <a class="header-anchor" href="#编写配置" aria-label="Permalink to &quot;编写配置&quot;"></a></h3><p>创建一个配置类，为任务和触发器提供两个 Bean 配置，记得别忘了对触发器指定任务。</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark-dimmed vp-code"><code><span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">@</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">Configuration</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> class</span><span style="--shiki-light:#6F42C1;--shiki-dark:#F69D50;"> SchedulerConfig</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> {</span></span>
<span class="line"></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">    // 任务bean</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    @</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">Bean</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">    public</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> JobDetail </span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">simpleJobBean</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">() {</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">        return</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> JobBuilder.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">newJob</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(SimpleJob.class)</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">                .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">withIdentity</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;">&quot;job1&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">, </span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;">&quot;group1&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">)</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">                // Jobs added with no trigger must be durable.</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">                .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">storeDurably</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">()</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">                .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">build</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">();</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    }</span></span>
<span class="line"></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">    // 触发器bean</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    @</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">Bean</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">    public</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> Trigger </span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">simpleTrigger</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">() {</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">        return</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> TriggerBuilder.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">newTrigger</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">()</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">                .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">withIdentity</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;">&quot;trigger1&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">, </span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;">&quot;group1&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">)</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">                .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">withSchedule</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(SimpleScheduleBuilder.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">simpleSchedule</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">()</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">                        .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">withIntervalInSeconds</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#6CB6FF;">3</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">)</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">                        .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">repeatForever</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">())</span></span>
<span class="line"><span style="--shiki-light:#6A737D;--shiki-dark:#768390;">                // 指定具体任务</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">                .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">forJob</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">simpleJobBean</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">())</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">                .</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">build</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">();</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    }</span></span>
<span class="line"></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">}</span></span></code></pre></div><h2 id="spring-task" tabindex="-1">Spring Task <a class="header-anchor" href="#spring-task" aria-label="Permalink to &quot;Spring Task&quot;"></a></h2><p>Spring 从 3.x 开始提供了 Spring Task，可以理解为是一种轻量级的 Quartz。接下来，我们也在 Spring Boot 中体验一下。</p><p>创建好的 Spring Boot 项目，不需要你添加任何额外依赖，在任何一个 Spring 组件中，创建普通方法编写好任务（可以写多个），再通过 <code>@Scheduled</code> 注解为其指定好 Cron 表达式，一个绑定了触发器的任务就新鲜出炉了。</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark-dimmed vp-code"><code><span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">@</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">Component</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> class</span><span style="--shiki-light:#6F42C1;--shiki-dark:#F69D50;"> TestTask</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> {</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    </span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    @</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">Scheduled</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#005CC5;--shiki-dark:#6CB6FF;">cron</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> =</span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;"> &quot;0/3 * * ? * *&quot;</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">)</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">    public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> void</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;"> task1</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">() {</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">        System.out.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">println</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#032F62;--shiki-dark:#96D0FF;">&quot;当前时间是：&quot;</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> +</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> LocalDateTime.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">now</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">());</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    }</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    </span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">}</span></span></code></pre></div><p>最后，还需要在启动类/任务类上使用 @EnableScheduling 启用一下任务调度功能，是不是挺简单的？</p><div class="language-java vp-adaptive-theme"><button title="Copy Code" class="copy"></button><span class="lang">java</span><pre class="shiki shiki-themes github-light github-dark-dimmed vp-code"><code><span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">@</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">EnableScheduling</span><span style="--shiki-light:#6A737D;--shiki-dark:#768390;"> // 启用任务调度</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">@</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">SpringBootApplication</span></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> class</span><span style="--shiki-light:#6F42C1;--shiki-dark:#F69D50;"> DemoSpringbootApplication</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;"> {</span></span>
<span class="line"></span>
<span class="line"><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">    public</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> static</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;"> void</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;"> main</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(</span><span style="--shiki-light:#D73A49;--shiki-dark:#F47067;">String</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">[] </span><span style="--shiki-light:#E36209;--shiki-dark:#F69D50;">args</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">) {</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">        SpringApplication.</span><span style="--shiki-light:#6F42C1;--shiki-dark:#DCBDFB;">run</span><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">(DemoSpringbootApplication.class, args);</span></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">    }</span></span>
<span class="line"></span>
<span class="line"><span style="--shiki-light:#24292E;--shiki-dark:#ADBAC7;">}</span></span></code></pre></div><h2 id="参考资料" tabindex="-1">参考资料 <a class="header-anchor" href="#参考资料" aria-label="Permalink to &quot;参考资料&quot;"></a></h2><p>[1]Quartz 官网：<a href="http://www.quartz-scheduler.org/" target="_blank" rel="noreferrer">http://www.quartz-scheduler.org/</a></p><p>[2]Quartz GitHub地址：<a href="https://github.com/quartz-scheduler/quartz" target="_blank" rel="noreferrer">https://github.com/quartz-scheduler/quartz</a></p><p>[3]MaTools 在线Cron表达式生成器：<a href="https://www.matools.com/cron" target="_blank" rel="noreferrer">https://www.matools.com/cron</a></p><h2 id="后记" tabindex="-1">后记 <a class="header-anchor" href="#后记" aria-label="Permalink to &quot;后记&quot;"></a></h2><p><strong>C：</strong> 好了，Quartz 定时器的入门介绍到这儿就结束了。入门介绍中，咱们仅仅是介绍了一下 Quartz 的 RAMJobStore 模式，即 Quartz 将 Trigger 和 Job 存储在内存中，内存中存取自然是很快的，但缺陷就是内存无法持久化存储。</p><p>所以， Quartz 还有一种 JDBC JobStore 模式，即 Quartz 利用 JDBC 将 Trigger 和 Job 存储到数据库中，想要实现 Quartz 的集群也得先完成这一步进阶。</p><p>当然了，Java 中还有很多定时器的实现方案。例如：java.util.Timer、ScheduledThreadPoolExecutor（基于线程池设计的定时任务类）、延时队列等，有兴趣可以先去了解了解。不然就等后面，笔者有时间再介绍吧。</p></div></div></main><footer class="VPDocFooter" data-v-53ed897c data-v-f3af8004><!--[--><!--[--><!--[--><!--[--><!----><!--]--><!--]--><!--]--><!--]--><div class="edit-info" data-v-f3af8004><div class="edit-link" data-v-f3af8004><a class="VPLink link vp-external-link-icon no-icon edit-link-button" href="https://github.com/Charles7c/charles7c.github.io/edit/main/docs/categories/tools/2021/03/10/Quartz快速入门.md" target="_blank" rel="noreferrer" data-v-f3af8004><!--[--><svg xmlns="http://www.w3.org/2000/svg" viewbox="0 0 24 24" class="edit-link-icon" aria-label="edit icon" data-v-f3af8004><path d="M18,23H4c-1.7,0-3-1.3-3-3V6c0-1.7,1.3-3,3-3h7c0.6,0,1,0.4,1,1s-0.4,1-1,1H4C3.4,5,3,5.4,3,6v14c0,0.6,0.4,1,1,1h14c0.6,0,1-0.4,1-1v-7c0-0.6,0.4-1,1-1s1,0.4,1,1v7C21,21.7,19.7,23,18,23z"></path><path d="M8,17c-0.3,0-0.5-0.1-0.7-0.3C7,16.5,6.9,16.1,7,15.8l1-4c0-0.2,0.1-0.3,0.3-0.5l9.5-9.5c1.2-1.2,3.2-1.2,4.4,0c1.2,1.2,1.2,3.2,0,4.4l-9.5,9.5c-0.1,0.1-0.3,0.2-0.5,0.3l-4,1C8.2,17,8.1,17,8,17zM9.9,12.5l-0.5,2.1l2.1-0.5l9.3-9.3c0.4-0.4,0.4-1.1,0-1.6c-0.4-0.4-1.2-0.4-1.6,0l0,0L9.9,12.5z M18.5,2.5L18.5,2.5L18.5,2.5z"></path></svg> 不妥之处，敬请雅正<!--]--></a></div><div class="last-updated" data-v-f3af8004><p class="VPLastUpdated" data-v-f3af8004 data-v-a25eb6f3>最后更新: <time datetime="2022-11-04T07:01:48.000Z" data-v-a25eb6f3></time></p></div></div><nav class="prev-next" data-v-f3af8004><div class="pager" data-v-f3af8004><!----></div><div class="pager" data-v-f3af8004><a class="VPLink link pager-link next" href="/categories/tools/2021/03/06/Postman%E5%BF%AB%E9%80%9F%E5%85%A5%E9%97%A8" data-v-f3af8004><!--[--><span class="desc" data-v-f3af8004>下一篇</span><span class="title" data-v-f3af8004><div class="text-color-orange mr-[6px]" style="font-weight: 550; display: inline-block;">2</div>Postman 快速入门</span><!--]--></a></div></nav></footer><!--[--><!--[--><!--[--><div id="comment-container"></div><!--]--><!--]--><!--]--></div></div></div><!--[--><!--]--></div></div><!----><!--[--><!--]--></div></div>
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Please install libicu using your package manager and try again\",\"link\":\"/categories/issues/2022/11/06/解决DotNET安装后报错的问题\"},{\"text\":\"<div class=\\\"text-color-yellow mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">3</div>解决 Docker 安装 Prometheus 启动报 permission denied 的问题\",\"link\":\"/categories/issues/2022/11/04/解决Docker安装Prometheus启动报错的问题\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">4</div>Docker 设置网络代理\",\"link\":\"/categories/issues/2022/10/29/Docker设置网络代理\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">5</div>解决 CentOS 8 执行 yum install 报 Error: Failed to download metadata for repo 'appstream': Cannot prepare internal mirrorlist: No URLs in mirrorlist 的问题\",\"link\":\"/categories/issues/2022/10/25/解决CentOS8执行yum安装报错\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">6</div>解决 Windows 桌面部分快捷方式图标变为空白的问题\",\"link\":\"/categories/issues/2022/10/15/解决Windows桌面部分快捷方式图标变为空白的问题\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">7</div>解决无法重复读取请求体和响应体的问题\",\"link\":\"/categories/issues/2022/09/23/解决无法重复读取请求体和响应体的问题\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">8</div>Nginx转发请求，报13：Permission denied错误\",\"link\":\"/categories/issues/2022/09/05/Nginx转发请求，报13：Permission denied错误\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">9</div>SpringBoot项目引入OpenFeign后无法启动\",\"link\":\"/categories/issues/2022/08/31/SpringBoot项目引入OpenFeign后无法启动\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">10</div>执行Shell脚本，报java: command not found\",\"link\":\"/categories/issues/2022/08/11/执行Shell脚本，报java command not found\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">11</div>创建一个自身类的静态对象变量，究竟会如何执行？\",\"link\":\"/categories/issues/2022/03/24/创建一个自身类的静态对象变量，究竟会如何执行？\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">12</div>JavaScript 无法存储 Java Long 类型数据问题\",\"link\":\"/categories/issues/2022/01/26/JavaScript 无法存储 Java  Long 类型数据问题\"}],\"collapsed\":false},{\"text\":\"<img class=\\\"chinese-zodiac\\\" style=\\\"position: static; vertical-align: middle; padding-bottom: 3px;\\\" src=\\\"/img/svg/chinese-zodiac/ox.svg\\\" title=\\\"牛年\\\" alt=\\\"生肖\\\">\\n            2021年 (5篇)\",\"items\":[{\"text\":\"<div class=\\\"text-color-red mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">1</div>无法访问 F:\\\\。文件或目录损坏且无法读取。\",\"link\":\"/categories/issues/2021/12/13/无法访问F盘。文件或目录损坏且无法读取\"},{\"text\":\"<div class=\\\"text-color-orange mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">2</div>SQL 注入攻击风险\",\"link\":\"/categories/issues/2021/12/11/SQL 注入攻击风险\"},{\"text\":\"<div class=\\\"text-color-yellow mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">3</div>Command line is too long. Shorten command line for XXX or also for Spring Boot default configuration？\",\"link\":\"/categories/issues/2021/12/10/Command line is too long. Shorten command line for XXX or also for Spring Boot default configuration\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">4</div>for循环中删除集合元素隐藏的陷阱\",\"link\":\"/categories/issues/2021/12/08/for循环中删除集合元素隐藏的陷阱\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">5</div>F:\\\\ 上的回收站已损坏。是否清空该驱动器上的\\\"回收站\\\"?\",\"link\":\"/categories/issues/2021/12/01/F盘上的回收站已损坏。是否清空该驱动器上的回收站\"}],\"collapsed\":true}],\"/categories/fragments/\":[{\"text\":\"<svg style=\\\"display: inline-block; vertical-align: middle; padding-bottom: 3px;\\\" viewBox=\\\"0 0 1920 1024\\\" version=\\\"1.1\\\" xmlns=\\\"http://www.w3.org/2000/svg\\\" width=\\\"30\\\" height=\\\"30\\\"><path d=\\\"M367.488 667.904h423.744v47.232H367.488v-47.232zM320.256 204.352h137.28v68.992h-137.28v-68.992zM367.488 754.112h423.744v48H367.488v-48zM693.76 204.352h137.984v68.992H693.76v-68.992zM507.008 204.352h137.28v68.992h-137.28v-68.992z\\\" p-id=\\\"10749\\\" fill=\\\"#d81e06\\\"></path><path d=\\\"M1792.512 0H127.488C57.472 0 0 57.152 0 127.616v768.768C0 966.72 57.088 1024 127.488 1024h1665.088c69.952 0 127.424-57.152 127.424-127.616V127.616C1920 57.216 1862.912 0 1792.512 0z m-528 175.104h446.976v54.016H1494.72l-24 101.248h206.976V689.6h-57.728V384.32h-289.472v308.224h-57.728v-362.24h140.224l20.992-101.248h-169.472v-53.952z m-996.032-11.2h614.272v167.232h-51.008v-17.28H320.256v17.28H268.48V163.904z m678.784 681.728h-744v-43.52h111.744V454.848h229.504v-48.704H221.248v-42.048h323.264v-39.744h54.016v39.744h331.52v41.984h-331.52v48.768h245.248v347.264h103.488v43.52z m203.264-94.528c0 59.52-30.72 89.28-92.224 89.28-25.472 0-46.016-0.512-61.504-1.472-2.496-22.976-6.528-45.248-12.032-66.752 22.976 5.504 46.72 8.256 71.232 8.256 24 0 35.968-11.52 35.968-34.496V247.872H971.2v-54.72h278.976v54.72H1150.4v503.232z m521.216 121.536c-67.008-55.488-137.28-108.032-210.752-157.504-4.992 9.984-10.496 19.008-16.512 27.008-41.472 57.024-113.28 101.504-215.232 133.504-9.472-16.512-21.504-34.496-35.968-54.016 94.528-27.008 161.28-64.512 200.256-112.512 34.496-44.992 51.776-113.024 51.776-204.032V421.12h57.728v82.496c0 62.528-6.72 115.776-20.224 159.744 84.48 54.016 161.472 107.008 230.976 158.976l-42.048 50.304z\\\" p-id=\\\"10750\\\" fill=\\\"#d81e06\\\"></path><path d=\\\"M367.488 495.36h423.744v47.232H367.488V495.36zM367.488 581.632h423.744v47.232H367.488v-47.232z\\\" p-id=\\\"10751\\\" fill=\\\"#d81e06\\\"></path></svg>\\n            我的置顶 (8篇)\",\"items\":[{\"text\":\"<div class=\\\"text-color-red mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">1</div>个人常用快捷键\",\"link\":\"/categories/fragments/2022/10/06/个人常用快捷键\"},{\"text\":\"<div class=\\\"text-color-orange mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">2</div>个人常用 Git 命令\",\"link\":\"/categories/fragments/2022/10/05/个人常用Git命令\"},{\"text\":\"<div class=\\\"text-color-yellow mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">3</div>个人常用 Docker 命令\",\"link\":\"/categories/fragments/2022/10/01/个人常用Docker命令\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">4</div>个人常用 SQL 函数\",\"link\":\"/categories/fragments/2022/02/16/个人常用SQL函数\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">5</div>个人常用 Linux 命令\",\"link\":\"/categories/fragments/2019/12/31/个人常用Linux命令\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">6</div>个人常用 Hutool 工具类\",\"link\":\"/categories/fragments/2019/12/30/个人常用Hutool工具类\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">7</div>个人常用 Stream 使用技巧\",\"link\":\"/categories/fragments/2019/12/29/个人常用Stream使用技巧\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">8</div>个人 SQL 优化技巧\",\"link\":\"/categories/fragments/2019/12/28/个人SQL优化技巧\"}],\"collapsed\":false},{\"text\":\"<img class=\\\"chinese-zodiac\\\" style=\\\"position: static; vertical-align: middle; padding-bottom: 3px;\\\" src=\\\"/img/svg/chinese-zodiac/rabbit.svg\\\" title=\\\"兔年\\\" alt=\\\"生肖\\\">\\n            2023年 (2篇)\",\"items\":[{\"text\":\"<div class=\\\"text-color-red mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">1</div>一文详解限流接口实现\",\"link\":\"/categories/fragments/2023/12/21/一文详解限流接口实现\"},{\"text\":\"<div class=\\\"text-color-orange mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">2</div>阿里巴巴的Code Review方法论与实践总结\",\"link\":\"/categories/fragments/2023/01/06/CodeReview方法论与实践总结\"}],\"collapsed\":false},{\"text\":\"<img class=\\\"chinese-zodiac\\\" style=\\\"position: static; vertical-align: middle; padding-bottom: 3px;\\\" src=\\\"/img/svg/chinese-zodiac/tiger.svg\\\" title=\\\"虎年\\\" alt=\\\"生肖\\\">\\n            2022年 (15篇)\",\"items\":[{\"text\":\"<div class=\\\"text-color-red mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">1</div>简单聊聊如何让网站开启灰色显示\",\"link\":\"/categories/fragments/2022/12/07/网站开启灰色显示\"},{\"text\":\"<div class=\\\"text-color-orange mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">2</div>使用 IntelliJ IDEA 进行远程程序调试\",\"link\":\"/categories/fragments/2022/11/01/使用IDEA进行远程程序调试\"},{\"text\":\"<div class=\\\"text-color-yellow mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">3</div>CentOS 安装 Docker、Docker Compose\",\"link\":\"/categories/fragments/2022/10/31/CentOS安装Docker\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">4</div>Docker 安装 MinIO 详细步骤\",\"link\":\"/categories/fragments/2022/10/28/Docker安装MinIO\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">5</div>Docker 安装 Consul 详细步骤\",\"link\":\"/categories/fragments/2022/10/27/Docker安装Consul\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">6</div>Docker 安装 OpenLDAP 详细步骤\",\"link\":\"/categories/fragments/2022/10/26/Docker安装OpenLDAP\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">7</div>个人常用快捷键\",\"link\":\"/categories/fragments/2022/10/06/个人常用快捷键\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">8</div>个人常用 Git 命令\",\"link\":\"/categories/fragments/2022/10/05/个人常用Git命令\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">9</div>个人常用 Docker 命令\",\"link\":\"/categories/fragments/2022/10/01/个人常用Docker命令\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">10</div>内网CentOS服务器设置网络代理\",\"link\":\"/categories/fragments/2022/08/29/内网CentOS服务器设置网络代理\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">11</div>为指定Git仓库单独配置用户名和邮箱\",\"link\":\"/categories/fragments/2022/03/28/为指定Git仓库单独配置用户名和邮箱\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">12</div>修改Git所有提交记录中的作者和邮箱\",\"link\":\"/categories/fragments/2022/03/27/修改Git所有提交记录中的作者和邮箱\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">13</div>修改Git最后一次提交记录的作者和邮箱\",\"link\":\"/categories/fragments/2022/03/26/修改Git最后一次提交记录的作者和邮箱\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">14</div>合并两个Git仓库的历史提交记录\",\"link\":\"/categories/fragments/2022/03/25/合并两个Git仓库的历史提交记录\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">15</div>个人常用 SQL 函数\",\"link\":\"/categories/fragments/2022/02/16/个人常用SQL函数\"}],\"collapsed\":true},{\"text\":\"<img class=\\\"chinese-zodiac\\\" style=\\\"position: static; vertical-align: middle; padding-bottom: 3px;\\\" src=\\\"/img/svg/chinese-zodiac/ox.svg\\\" title=\\\"牛年\\\" alt=\\\"生肖\\\">\\n            2021年 (2篇)\",\"items\":[{\"text\":\"<div class=\\\"text-color-red mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">1</div>设计模式之单例模式\",\"link\":\"/categories/fragments/2021/05/29/设计模式之单例模式\"},{\"text\":\"<div class=\\\"text-color-orange mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">2</div>精密计算工具类-BigDecimal\",\"link\":\"/categories/fragments/2021/03/12/精密计算工具类-BigDecimal\"}],\"collapsed\":true},{\"text\":\"<img class=\\\"chinese-zodiac\\\" style=\\\"position: static; vertical-align: middle; padding-bottom: 3px;\\\" src=\\\"/img/svg/chinese-zodiac/pig.svg\\\" title=\\\"猪年\\\" alt=\\\"生肖\\\">\\n            2019年 (4篇)\",\"items\":[{\"text\":\"<div class=\\\"text-color-red mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">1</div>个人常用 Linux 命令\",\"link\":\"/categories/fragments/2019/12/31/个人常用Linux命令\"},{\"text\":\"<div class=\\\"text-color-orange mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">2</div>个人常用 Hutool 工具类\",\"link\":\"/categories/fragments/2019/12/30/个人常用Hutool工具类\"},{\"text\":\"<div class=\\\"text-color-yellow mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">3</div>个人常用 Stream 使用技巧\",\"link\":\"/categories/fragments/2019/12/29/个人常用Stream使用技巧\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">4</div>个人 SQL 优化技巧\",\"link\":\"/categories/fragments/2019/12/28/个人SQL优化技巧\"}],\"collapsed\":true}],\"/categories/solutions/\":[{\"text\":\"<img class=\\\"chinese-zodiac\\\" style=\\\"position: static; vertical-align: middle; padding-bottom: 3px;\\\" src=\\\"/img/svg/chinese-zodiac/tiger.svg\\\" title=\\\"虎年\\\" alt=\\\"生肖\\\">\\n            2022年 (1篇)\",\"items\":[{\"text\":\"<div class=\\\"text-color-red mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">1</div>递归查询树型结构数据的性能优化方案\",\"link\":\"/categories/solutions/2022/09/07/递归查询树型结构数据的性能优化方案\"}],\"collapsed\":false},{\"text\":\"<img class=\\\"chinese-zodiac\\\" style=\\\"position: static; vertical-align: middle; padding-bottom: 3px;\\\" src=\\\"/img/svg/chinese-zodiac/ox.svg\\\" title=\\\"牛年\\\" alt=\\\"生肖\\\">\\n            2021年 (2篇)\",\"items\":[{\"text\":\"<div class=\\\"text-color-red mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">1</div>一条SQL查询今年每月统计信息\",\"link\":\"/categories/solutions/2021/11/22/一条SQL查询今年每月统计信息\"},{\"text\":\"<div class=\\\"text-color-orange mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">2</div>用Java8获取近N天日期\",\"link\":\"/categories/solutions/2021/11/18/用Java8获取近N天日期\"}],\"collapsed\":true}],\"/categories/tools/\":[{\"text\":\"<img class=\\\"chinese-zodiac\\\" style=\\\"position: static; vertical-align: middle; padding-bottom: 3px;\\\" src=\\\"/img/svg/chinese-zodiac/ox.svg\\\" title=\\\"牛年\\\" alt=\\\"生肖\\\">\\n            2021年 (5篇)\",\"items\":[{\"text\":\"<div class=\\\"text-color-red mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">1</div>Quartz 快速入门\",\"link\":\"/categories/tools/2021/03/10/Quartz快速入门\"},{\"text\":\"<div class=\\\"text-color-orange mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">2</div>Postman 快速入门\",\"link\":\"/categories/tools/2021/03/06/Postman快速入门\"},{\"text\":\"<div class=\\\"text-color-yellow mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">3</div>Another Redis Desktop Manager 快速入门\",\"link\":\"/categories/tools/2021/03/04/ARDM快速入门\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">4</div>Redis Desktop Manager 快速入门\",\"link\":\"/categories/tools/2021/02/22/RDM快速入门\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">5</div>初识 Lombok\",\"link\":\"/categories/tools/2021/01/14/初识Lombok\"}],\"collapsed\":false}],\"/courses/java/\":[{\"text\":\"Java语法入门 (14篇)\",\"items\":[{\"text\":\"<div class=\\\"text-color-red mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">1</div>开发环境搭建\",\"link\":\"/courses/java/01-Java语法入门/01-开发环境搭建\"},{\"text\":\"<div class=\\\"text-color-orange mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">2</div>第一个Java程序\",\"link\":\"/courses/java/01-Java语法入门/02-第一个Java程序\"},{\"text\":\"<div class=\\\"text-color-yellow mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">3</div>初识Eclipse\",\"link\":\"/courses/java/01-Java语法入门/03-初识Eclipse\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">4</div>程序和计算机的那点事儿\",\"link\":\"/courses/java/01-Java语法入门/04-程序和计算机的那点事儿\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">5</div>变量和常量\",\"link\":\"/courses/java/01-Java语法入门/05-变量和常量\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">6</div>常用的运算符\",\"link\":\"/courses/java/01-Java语法入门/06-常用的运算符\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; display: inline-block;\\\">7</div>控制语句和流程图\",\"link\":\"/courses/java/01-Java语法入门/07-控制语句和流程图\"},{\"text\":\"<div class=\\\"text-color-gray mr-[6px]\\\" style=\\\"font-weight: 550; 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