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<time class="level-item has-text-grey" datetime="2019-08-15T09:13:00.000Z">2019-08-15</time>
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<h1 class="title is-size-3 is-size-4-mobile has-text-weight-normal">
基于SpringBoot2.x，Quartz的定时任务的动态修改
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<h1 id="概述"><a href="#概述" class="headerlink" title="概述:"></a>概述:</h1><p>在开发中有的时候需要去手动禁止和启用定时任务,修改定时任务的<code>cron</code>表达式然后再让其动态生效于是有了这个例子 本例子根据 zhuyanpeng的demo 改编有兴趣的童鞋可以github搜索zhuyanpeng看他的demo.本人将其中<code>Springboot1.x</code>升级为<code>2.x</code> 删除原有的<code>SpringUtil.java</code> 由<code>Spring</code>管理<code>TaskUtils.java</code> 另,多谢<code>@zhuyanpeng</code> 提供思路.代码稍后放出. 如有启发,请点<code>star</code></p>
<a id="more"></a>
<h1 id="相关技术"><a href="#相关技术" class="headerlink" title="相关技术"></a>相关技术</h1><p>本次用到的技术主要有 <code>springboot2.x</code> <code>Jpa</code> <code>Quartz</code> <code>H2</code> <code>Thymeleaf</code> </p>
<h1 id="具体流程"><a href="#具体流程" class="headerlink" title="具体流程"></a>具体流程</h1><p>1) 修改 <code>Quartz</code> 注入方式为<code>Spring</code>的 防止在执行<code>Job</code>的时候自动注入为<code>Null</code>,因为 在<code>Quartz</code>框架中，<code>Job</code> 是通过反射出来的实例，不受<code>Spring</code>的管理。具体方式为重写<code>SpringBeanJobFactory</code>类中的<code>createJobInstance</code>方法，将创建的<code>Job</code>实例添加到<code>applicationContext</code>中，交给<code>Spring</code>管理。具体代码详见 <code>HachiQuartzJobFactory.java</code></p>
<figure class="highlight java hljs"><figcaption><span>[] [HachiQuartzJobFactory.java]</span></figcaption><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br></pre></td><td class="code"><pre><span class="line"><span class="hljs-keyword">import</span> org.quartz.spi.TriggerFiredBundle;</span><br><span class="line"><span class="hljs-keyword">import</span> org.springframework.beans.factory.annotation.Autowired;</span><br><span class="line"><span class="hljs-keyword">import</span> org.springframework.beans.factory.config.AutowireCapableBeanFactory;</span><br><span class="line"><span class="hljs-keyword">import</span> org.springframework.scheduling.quartz.AdaptableJobFactory;</span><br><span class="line"></span><br><span class="line"><span class="hljs-comment">/**</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@BelongsProject</span>: spring-boot-dynamic-quartz</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@BelongsPackage</span>: com.hachismart.config</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@Author</span>: smallodd</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@CreateTime</span>: 2019-04-15 16:48</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@Description</span>: 修改QuartzJob 的注入方式为spring的</span></span><br><span class="line"><span class="hljs-comment"> */</span></span><br><span class="line"><span class="hljs-keyword">public</span> <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">HachiQuartzJobFactory</span> <span class="hljs-keyword">extends</span> <span class="hljs-title">AdaptableJobFactory</span> </span>{</span><br><span class="line"></span><br><span class="line"> <span class="hljs-comment">/**</span></span><br><span class="line"><span class="hljs-comment"> * 自动注入所需工厂类</span></span><br><span class="line"><span class="hljs-comment"> */</span></span><br><span class="line"></span><br><span class="line"> <span class="hljs-meta">@Autowired</span></span><br><span class="line"> <span class="hljs-keyword">private</span> AutowireCapableBeanFactory capableBeanFactory;</span><br><span class="line"></span><br><span class="line"> <span class="hljs-meta">@Override</span></span><br><span class="line"> <span class="hljs-function"><span class="hljs-keyword">protected</span> Object <span class="hljs-title">createJobInstance</span><span class="hljs-params">(TriggerFiredBundle bundle)</span> <span class="hljs-keyword">throws</span> Exception </span>{</span><br><span class="line"> <span class="hljs-comment">//调用父类的方法</span></span><br><span class="line"> Object jobInstance = <span class="hljs-keyword">super</span>.createJobInstance(bundle);</span><br><span class="line"> <span class="hljs-comment">//进行注入,这属于Spring的技术,不清楚的可以查看Spring的API.</span></span><br><span class="line"> capableBeanFactory.autowireBean(jobInstance);</span><br><span class="line"> <span class="hljs-keyword">return</span> jobInstance;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line">}</span><br></pre></td></tr></table></figure>
<p>2) 手动创建一个调度器工厂对象<code>SchedulerFactoryBean</code>，设置一些自己业务所需的属性重点是设置<code>JobFactory</code>为第一步自定义的<code>HachiQuartzJobFactory.java</code>代码详见<code>QuartzConfiguration.java</code></p>
<figure class="highlight java hljs"><figcaption><span>[] [QuartzConfiguration.java]</span></figcaption><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br></pre></td><td class="code"><pre><span class="line"><span class="hljs-keyword">import</span> org.springframework.context.annotation.Bean;</span><br><span class="line"><span class="hljs-keyword">import</span> org.springframework.context.annotation.Configuration;</span><br><span class="line"><span class="hljs-keyword">import</span> org.springframework.scheduling.quartz.SchedulerFactoryBean;</span><br><span class="line"></span><br><span class="line"><span class="hljs-comment">/**</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@BelongsProject</span>: spring-boot-dynamic-quartz</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@BelongsPackage</span>: com.hachismart.config</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@Author</span>: smallodd</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@CreateTime</span>: 2019-04-15 16:52</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@Description</span>: Quartz配置类</span></span><br><span class="line"><span class="hljs-comment"> */</span></span><br><span class="line"><span class="hljs-meta">@Configuration</span></span><br><span class="line"><span class="hljs-keyword">public</span> <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">QuartzConfiguration</span> </span>{</span><br><span class="line"> <span class="hljs-meta">@Bean</span></span><br><span class="line"> <span class="hljs-function"><span class="hljs-keyword">public</span> SchedulerFactoryBean <span class="hljs-title">schedulerFactoryBean</span><span class="hljs-params">()</span> </span>{</span><br><span class="line"> SchedulerFactoryBean factoryBean = <span class="hljs-keyword">new</span> SchedulerFactoryBean();</span><br><span class="line"> <span class="hljs-comment">//使用自定义的quartzJob 工厂类 防止不能注入的问题</span></span><br><span class="line"> factoryBean.setJobFactory(hachiQuartzJobFactory());</span><br><span class="line"> <span class="hljs-comment">/*用于Quartz集群,启动时更新已存在的Job*/</span></span><br><span class="line"> factoryBean.setOverwriteExistingJobs(<span class="hljs-keyword">true</span>);</span><br><span class="line"> <span class="hljs-comment">/*定时任务开始启动后延迟5秒开始*/</span></span><br><span class="line"> factoryBean.setStartupDelay(<span class="hljs-number">5</span>);</span><br><span class="line"> <span class="hljs-keyword">return</span> factoryBean;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"> <span class="hljs-meta">@Bean</span></span><br><span class="line"> <span class="hljs-function"><span class="hljs-keyword">public</span> HachiQuartzJobFactory <span class="hljs-title">hachiQuartzJobFactory</span><span class="hljs-params">()</span> </span>{</span><br><span class="line"> <span class="hljs-keyword">return</span> <span class="hljs-keyword">new</span> HachiQuartzJobFactory();</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">}</span><br></pre></td></tr></table></figure>
<p>3) 根据<code>schedulerFactoryBean</code>获取到<code>Scheduler</code>(任务调度器)</p>
<p>4) 获取触发器 判断触发器是否存在（如果存在说明之前运行过但是在当前被禁用了，如果不存在说明一次都没运行过） 存在则取出出发器 重启任务 否则 新建触发器 放到任务调度器中,代码详见<code>QuartzTableService.java</code></p>
<figure class="highlight java hljs"><figcaption><span>[] [QuartzTableService.java]</span></figcaption><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span 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class="line">120</span><br><span class="line">121</span><br><span class="line">122</span><br><span class="line">123</span><br><span class="line">124</span><br><span class="line">125</span><br><span class="line">126</span><br><span class="line">127</span><br><span class="line">128</span><br><span class="line">129</span><br><span class="line">130</span><br><span class="line">131</span><br><span class="line">132</span><br><span class="line">133</span><br><span class="line">134</span><br><span class="line">135</span><br><span class="line">136</span><br><span class="line">137</span><br></pre></td><td class="code"><pre><span class="line"><span class="hljs-keyword">import</span> com.hachismart.enums.ConfigEnum;</span><br><span class="line"><span class="hljs-keyword">import</span> com.hachismart.jpa.bean.QuartzConfig;</span><br><span class="line"><span class="hljs-keyword">import</span> com.hachismart.jpa.mapper.QuartzConfigMapper;</span><br><span class="line"><span class="hljs-keyword">import</span> com.hachismart.config.HachiQuartzJobConfig;</span><br><span class="line"><span class="hljs-keyword">import</span> org.quartz.*;</span><br><span class="line"><span class="hljs-keyword">import</span> org.springframework.beans.factory.annotation.Autowired;</span><br><span class="line"><span class="hljs-keyword">import</span> org.springframework.scheduling.quartz.SchedulerFactoryBean;</span><br><span class="line"><span class="hljs-keyword">import</span> org.springframework.stereotype.Service;</span><br><span class="line"></span><br><span class="line"><span class="hljs-keyword">import</span> java.util.List;</span><br><span class="line"></span><br><span class="line"><span class="hljs-comment">/**</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@BelongsProject</span>: spring-boot-dynamic-quartz</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@BelongsPackage</span>: com.hachismart.service</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@Author</span>: smallodd</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@CreateTime</span>: 2019-04-15 17:20</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@Description</span>: 动态加载Scheduler service</span></span><br><span class="line"><span class="hljs-comment"> */</span></span><br><span class="line"><span class="hljs-meta">@Service</span></span><br><span class="line"><span class="hljs-keyword">public</span> <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">QuartzTableService</span> </span>{</span><br><span class="line"> <span class="hljs-meta">@Autowired</span></span><br><span class="line"> <span class="hljs-keyword">private</span> SchedulerFactoryBean schedulerFactoryBean;</span><br><span class="line"></span><br><span class="line"> <span class="hljs-meta">@Autowired</span></span><br><span class="line"> <span class="hljs-keyword">private</span> QuartzConfigMapper quartzConfigMapper;</span><br><span class="line"></span><br><span class="line"> <span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">update</span><span class="hljs-params">(Long id, String status)</span> <span class="hljs-keyword">throws</span> Exception </span>{</span><br><span class="line"> <span class="hljs-comment">//判断是否有此ID的数据</span></span><br><span class="line"> QuartzConfig config = quartzConfigMapper.getOne(id);</span><br><span class="line"> <span class="hljs-keyword">if</span> (config == <span class="hljs-keyword">null</span>) {</span><br><span class="line"> <span class="hljs-keyword">new</span> RuntimeException(<span class="hljs-string">"未找到此定时任务"</span>);</span><br><span class="line"> }</span><br><span class="line"> <span class="hljs-keyword">if</span> (<span class="hljs-string">"1"</span>.equals(status)) {</span><br><span class="line"> <span class="hljs-comment">// stop 禁用</span></span><br><span class="line"> config.setStatus(ConfigEnum.STATUS_STOP.getCode());</span><br><span class="line"> deleteJob(config);</span><br><span class="line"> } <span class="hljs-keyword">else</span> {</span><br><span class="line"> <span class="hljs-comment">//start 启用</span></span><br><span class="line"> config.setStatus(ConfigEnum.STATUS_START.getCode());</span><br><span class="line"> addJob(config);</span><br><span class="line"> }</span><br><span class="line"> quartzConfigMapper.setStatusById(config.getStatus(), config.getId());</span><br><span class="line"></span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="hljs-comment">/**</span></span><br><span class="line"><span class="hljs-comment"> * 启动所有的任务</span></span><br><span class="line"><span class="hljs-comment"> *</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@return</span>: void</span></span><br><span class="line"><span class="hljs-comment"> */</span></span><br><span class="line"> <span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">startJobs</span><span class="hljs-params">()</span> </span>{</span><br><span class="line"> List<QuartzConfig> configList = quartzConfigMapper.findAll();</span><br><span class="line"> <span class="hljs-keyword">for</span> (QuartzConfig config : configList) {</span><br><span class="line"> <span class="hljs-keyword">if</span> (ConfigEnum.STATUS_START.getCode().equals(config.getStatus())) {</span><br><span class="line"> <span class="hljs-keyword">try</span> {</span><br><span class="line"> addJob(config);</span><br><span class="line"> } <span class="hljs-keyword">catch</span> (SchedulerException e) {</span><br><span class="line"> e.printStackTrace();</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="hljs-comment">/**</span></span><br><span class="line"><span class="hljs-comment"> * 修改cron表达式</span></span><br><span class="line"><span class="hljs-comment"> *</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@param</span> id</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@param</span> cronSchedule</span></span><br><span class="line"><span class="hljs-comment"> */</span></span><br><span class="line"> <span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">updateCron</span><span class="hljs-params">(Long id, String cronSchedule)</span> </span>{</span><br><span class="line"> <span class="hljs-keyword">int</span> i = quartzConfigMapper.setScheduleById(cronSchedule, id);</span><br><span class="line"> <span class="hljs-keyword">if</span> (i <= <span class="hljs-number">0</span>) {</span><br><span class="line"> <span class="hljs-keyword">throw</span> <span class="hljs-keyword">new</span> RuntimeException(<span class="hljs-string">"500!"</span>);</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"> <span class="hljs-comment">/**</span></span><br><span class="line"><span class="hljs-comment"> * 增加任务</span></span><br><span class="line"><span class="hljs-comment"> *</span></span><br><span class="line"><span class="hljs-comment"> */</span></span><br><span class="line"> <span class="hljs-function"><span class="hljs-keyword">private</span> <span class="hljs-keyword">void</span> <span class="hljs-title">addJob</span><span class="hljs-params">(QuartzConfig config)</span> <span class="hljs-keyword">throws</span> SchedulerException </span>{</span><br><span class="line"> <span class="hljs-comment">//得到调度器</span></span><br><span class="line"> Scheduler scheduler = schedulerFactoryBean.getScheduler();</span><br><span class="line"> JobKey jobKey = <span class="hljs-keyword">this</span>.getJobKey(config);</span><br><span class="line"> <span class="hljs-comment">//获得触发器</span></span><br><span class="line"> TriggerKey triggerKey = TriggerKey.triggerKey(config.getName(), config.getGroup());</span><br><span class="line"> CronTrigger trigger = (CronTrigger) scheduler.getTrigger(triggerKey);</span><br><span class="line"> <span class="hljs-comment">//判断触发器是否存在（如果存在说明之前运行过但是在当前被禁用了，如果不存在说明一次都没运行过）</span></span><br><span class="line"> <span class="hljs-keyword">if</span> (trigger == <span class="hljs-keyword">null</span>) {</span><br><span class="line"> <span class="hljs-comment">//新建一个工作任务 指定任务类型为串接进行的</span></span><br><span class="line"> JobDetail jobDetail = JobBuilder.newJob(HachiQuartzJobConfig.class).withIdentity(jobKey).build();</span><br><span class="line"> <span class="hljs-comment">//将工作添加到工作任务当中去</span></span><br><span class="line"> jobDetail.getJobDataMap().put(HachiQuartzJobConfig.SCHEDULEJOBKEY, config);</span><br><span class="line"> <span class="hljs-comment">//将cron表达式进行转换</span></span><br><span class="line"> CronScheduleBuilder cronScheduleBuilder = CronScheduleBuilder.cronSchedule(config.getCron());</span><br><span class="line"> <span class="hljs-comment">//创建触发器并将cron表达式对象给塞入</span></span><br><span class="line"> trigger = TriggerBuilder.newTrigger().withIdentity(triggerKey).withSchedule(cronScheduleBuilder).build();</span><br><span class="line"> <span class="hljs-comment">//在调度器中将触发器和任务进行组合</span></span><br><span class="line"> scheduler.scheduleJob(jobDetail, trigger);</span><br><span class="line"> } <span class="hljs-keyword">else</span> {</span><br><span class="line"> CronScheduleBuilder cronScheduleBuilder = CronScheduleBuilder.cronSchedule(config.getCron());</span><br><span class="line"> <span class="hljs-comment">//按照新的规则进行</span></span><br><span class="line"> trigger = trigger.getTriggerBuilder().withIdentity(triggerKey).withSchedule(cronScheduleBuilder).build();</span><br><span class="line"> <span class="hljs-comment">//重启</span></span><br><span class="line"> scheduler.rescheduleJob(triggerKey, trigger);</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="hljs-comment">/**</span></span><br><span class="line"><span class="hljs-comment"> * 删除任务</span></span><br><span class="line"><span class="hljs-comment"> *</span></span><br><span class="line"><span class="hljs-comment"> */</span></span><br><span class="line"> <span class="hljs-function"><span class="hljs-keyword">private</span> <span class="hljs-keyword">void</span> <span class="hljs-title">deleteJob</span><span class="hljs-params">(QuartzConfig config)</span> <span class="hljs-keyword">throws</span> SchedulerException </span>{</span><br><span class="line"> <span class="hljs-comment">//得到调度器</span></span><br><span class="line"> Scheduler scheduler = schedulerFactoryBean.getScheduler();</span><br><span class="line"> <span class="hljs-comment">//找到key值</span></span><br><span class="line"> JobKey jobKey = <span class="hljs-keyword">this</span>.getJobKey(config);</span><br><span class="line"> <span class="hljs-comment">//从触发器找到此任务然后进行删除</span></span><br><span class="line"> scheduler.deleteJob(jobKey);</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="hljs-comment">/**</span></span><br><span class="line"><span class="hljs-comment"> * 根据name和group得到任务的key</span></span><br><span class="line"><span class="hljs-comment"> *</span></span><br><span class="line"><span class="hljs-comment"> */</span></span><br><span class="line"> <span class="hljs-function"><span class="hljs-keyword">private</span> JobKey <span class="hljs-title">getJobKey</span><span class="hljs-params">(QuartzConfig config)</span> </span>{</span><br><span class="line"> <span class="hljs-keyword">return</span> getJobKey(config.getName(), config.getGroup());</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="hljs-function"><span class="hljs-keyword">private</span> JobKey <span class="hljs-title">getJobKey</span><span class="hljs-params">(String name, String group)</span> </span>{</span><br><span class="line"> <span class="hljs-keyword">return</span> JobKey.jobKey(name, group);</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"></span><br></pre></td></tr></table></figure>
<p>5) 创建一个任务类需要继承<code>Job</code>，实现方法<code>execute</code>,根据反射执行对应的<code>job</code>,代码详见<code>HachiQuartzJobConfig.java</code></p>
<figure class="highlight java hljs"><figcaption><span>[] [HachiQuartzJobConfig.java]</span></figcaption><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br></pre></td><td class="code"><pre><span class="line"></span><br><span class="line"><span class="hljs-keyword">import</span> com.hachismart.jpa.bean.QuartzConfig;</span><br><span class="line"><span class="hljs-keyword">import</span> com.hachismart.utils.TaskUtils;</span><br><span class="line"><span class="hljs-keyword">import</span> org.quartz.DisallowConcurrentExecution;</span><br><span class="line"><span class="hljs-keyword">import</span> org.quartz.Job;</span><br><span class="line"><span class="hljs-keyword">import</span> org.quartz.JobExecutionContext;</span><br><span class="line"><span class="hljs-keyword">import</span> org.quartz.JobExecutionException;</span><br><span class="line"><span class="hljs-keyword">import</span> org.springframework.beans.factory.annotation.Autowired;</span><br><span class="line"><span class="hljs-keyword">import</span> org.springframework.stereotype.Component;</span><br><span class="line"></span><br><span class="line"><span class="hljs-comment">/**</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@BelongsProject</span>: spring-boot-dynamic-quartz</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@BelongsPackage</span>: com.hachismart.config</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@Author</span>: smallodd</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@CreateTime</span>: 2019-04-15 16:52</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@Description</span>: 定时问题调用方法</span></span><br><span class="line"><span class="hljs-comment"> * <span class="hljs-doctag">@DisallowConcurrentExecution</span> 注解表示禁止并发执行多个相同定义的JobDetail, 但是不是禁止执行相同的任务</span></span><br><span class="line"><span class="hljs-comment"> */</span></span><br><span class="line"><span class="hljs-meta">@DisallowConcurrentExecution</span></span><br><span class="line"><span class="hljs-meta">@Component</span>(<span class="hljs-string">"hachiQuartzJobConfig"</span>)</span><br><span class="line"><span class="hljs-keyword">public</span> <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">HachiQuartzJobConfig</span> <span class="hljs-keyword">implements</span> <span class="hljs-title">Job</span> </span>{</span><br><span class="line"></span><br><span class="line"> <span class="hljs-keyword">public</span> <span class="hljs-keyword">static</span> <span class="hljs-keyword">final</span> String SCHEDULEJOBKEY = <span class="hljs-string">"scheduleJob"</span>;</span><br><span class="line"> <span class="hljs-meta">@Autowired</span></span><br><span class="line"> <span class="hljs-keyword">private</span> TaskUtils taskUtils;</span><br><span class="line"></span><br><span class="line"></span><br><span class="line"> <span class="hljs-comment">//execute会根据cron的规则进行执行</span></span><br><span class="line"> <span class="hljs-meta">@Override</span></span><br><span class="line"> <span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">execute</span><span class="hljs-params">(JobExecutionContext jobExecutionContext)</span> <span class="hljs-keyword">throws</span> JobExecutionException </span>{</span><br><span class="line"> QuartzConfig config = (QuartzConfig) jobExecutionContext.getMergedJobDataMap().get(SCHEDULEJOBKEY);</span><br><span class="line"> taskUtils.invokMethod(config);</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">}</span><br></pre></td></tr></table></figure>
<p>经过如上描述动态修改<code>cron</code>表达式的核心以及写好了,外围的<code>crud</code>详见<code>github</code>,该项目的<code>github</code>地址为: <a href="https://github.com/smallodd/spring-boot-dynamic-quartz" target="_blank" rel="noopener">https://github.com/smallodd/spring-boot-dynamic-quartz</a> 如有帮助,烦请点击<code>start</code></p>
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<li><strong>本文标题：</strong><a href="https://blog.visutech.cn/2628687485.html">基于SpringBoot2.x，Quartz的定时任务的动态修改</a></li>
<li><strong>本文作者：</strong><a href="https://blog.visutech.cn">程振奇 | smallodd</a></li>
<li><strong>本文链接：</strong><a href="https://blog.visutech.cn/2628687485.html">https://blog.visutech.cn/2628687485.html</a></li>
<li><strong>发布时间：</strong>2019-08-15</li>
<li><strong>版权声明：</strong>本博客所有文章除特别声明外，均采用 <a href="https://creativecommons.org/licenses/by-nc-sa/4.0/deed.zh" rel="external nofollow" target="_blank">CC BY-NC-SA 4.0</a> 许可协议。转载请注明出处！
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<a class="has-link-grey -link" href="/tags/JAVA/">JAVA</a>, <a class="has-link-grey -link" href="/tags/Spring/">Spring</a>
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