Quartz-中断正在执行的任务
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Quartz-中断正在执行的任务
版权声明:【show me the code ,change the world】 https://blog.csdn.net/yangshangwei/article/details/78545158
概述
由于业务需要,停止Quartz中正在执行的任务
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任务类只需要实现InterruptableJob类,然后实现interrupt()方法。
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在这个方法中进行标记的改变,在执行中进行这个标记判断,就可实现中断任务了
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另外在调度器上调用方法:sched.interrupt(job.getKey())
示例
job类
package com.xgj.quartz.quartzItself.interruptableJob;
import java.text.SimpleDateFormat;
import java.util.Date;
import org.quartz.InterruptableJob;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.quartz.JobKey;
import org.quartz.UnableToInterruptJobException;
/**
*
*
* @ClassName: DumbInterruptableJob
*
* @Description: 个可执行的中断可执行程序,用于单元测试。
*
* @author: Mr.Yang
*
* @date: 2017年11月15日 上午9:26:36
*/
public class DumbInterruptableJob implements InterruptableJob {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
private boolean _interrupted = false; // job 是否中断
private JobKey _jobKey = null; // job name
private static int counts = 0; // 中断执行次数
@Override
public void execute(JobExecutionContext context)
throws JobExecutionException {
_jobKey = context.getJobDetail().getKey();
System.out.println("【开始执行】任务Key:" + _jobKey + ",执行时间: "
+ sdf.format(new Date()));
try {
for (int i = 0; i < 4; i++) {
try {
Thread.sleep(1000L);
} catch (Exception e) {
e.printStackTrace();
}
// 查看是否中断
if (_interrupted) {
counts++;
System.out.println("被外界因素停止了这个任务key:" + _jobKey
+ ",中断累计次数: " + counts + "\n");
return; // 也可以选择抛出一个JobExecutionException,根据业务需要指定行为
}
}
} finally {
System.out.println("【完成任务】key:" + _jobKey + " 完成时间:"
+ sdf.format(new Date()));
}
}
@Override
public void interrupt() throws UnableToInterruptJobException {
System.out.println("\n—————— 【中断】外界正在调用调度器停止这个任务key:" + _jobKey
+ " ————————");
_interrupted = true;
}
}
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调度类
package com.xgj.quartz.quartzItself.interruptableJob;
import static org.quartz.DateBuilder.nextGivenSecondDate;
import static org.quartz.JobBuilder.newJob;
import static org.quartz.SimpleScheduleBuilder.simpleSchedule;
import static org.quartz.TriggerBuilder.newTrigger;
import java.text.SimpleDateFormat;
import java.util.Date;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerFactory;
import org.quartz.SchedulerMetaData;
import org.quartz.SimpleTrigger;
import org.quartz.impl.StdSchedulerFactory;
/**
*
*
* @ClassName: InterruptExample
*
* @Description: 调度类
*
* @author: Mr.Yang
*
* @date: 2017年11月15日 上午9:28:21
*/
public class InterruptExample {
public void run() throws Exception {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
System.out.println("------- 初始化 ----------------------");
SchedulerFactory sf = new StdSchedulerFactory();
Scheduler sched = sf.getScheduler();
// 下一个15秒
Date startTime = nextGivenSecondDate(null, 15);
// 当前时间15秒后,每间隔5秒执行一次任务
JobDetail job = newJob(DumbInterruptableJob.class).withIdentity(
"interruptableJob1", "group1").build();
SimpleTrigger trigger = newTrigger()
.withIdentity("trigger1", "group1")
.startAt(startTime)
.withSchedule(
simpleSchedule().withIntervalInSeconds(5)
.repeatForever()).build();
Date ft = sched.scheduleJob(job, trigger);
System.out.println(job.getKey() + " 将运行于:" + sdf.format(ft) + " 并重复:"
+ trigger.getRepeatCount() + " 次,间隔 "
+ trigger.getRepeatInterval() / 1000 + " 秒");
// 调度开始执行
sched.start();
System.out.println("------- 开始调度 (调用.start()方法) ----------------");
System.out.println("------- 每7秒钟启动一次中断任务(10次中断) ----------");
for (int i = 0; i < 10; i++) {
try {
Thread.sleep(7000L);
// 手动中断调度器中的job
sched.interrupt(job.getKey());
} catch (Exception e) {
e.printStackTrace();
}
}
System.out.println("------- 关闭调度 ---------------------");
sched.shutdown(true);
System.out.println("------- 关闭调度器完成 -----------------");
SchedulerMetaData metaData = sched.getMetaData();
System.out.println("~~~~~~~~~~ 执行了 "
+ metaData.getNumberOfJobsExecuted() + " 个 jobs.");
}
public static void main(String[] args) throws Exception {
InterruptExample example = new InterruptExample();
example.run();
}
}
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运行结果
------- 初始化 ----------------------
INFO StdSchedulerFactory - Using default implementation for ThreadExecutor
INFO SimpleThreadPool - Job execution threads will use class loader of thread: main
INFO SchedulerSignalerImpl - Initialized Scheduler Signaller of type: class org.quartz.core.SchedulerSignalerImpl
INFO QuartzScheduler - Quartz Scheduler v.2.2.3 created.
INFO RAMJobStore - RAMJobStore initialized.
INFO QuartzScheduler - Scheduler meta-data: Quartz Scheduler (v2.2.3) 'DefaultQuartzScheduler' with instanceId 'NON_CLUSTERED'
Scheduler class: 'org.quartz.core.QuartzScheduler' - running locally.
NOT STARTED.
Currently in standby mode.
Number of jobs executed: 0
Using thread pool 'org.quartz.simpl.SimpleThreadPool' - with 10 threads.
Using job-store 'org.quartz.simpl.RAMJobStore' - which does not support persistence. and is not clustered.
INFO StdSchedulerFactory - Quartz scheduler 'DefaultQuartzScheduler' initialized from default resource file in Quartz package: 'quartz.properties'
INFO StdSchedulerFactory - Quartz scheduler version: 2.2.3
group1.interruptableJob1 将运行于:2017-11-15 09:29:45 并重复:-1 次,间隔 5 秒
INFO QuartzScheduler - Scheduler DefaultQuartzScheduler_$_NON_CLUSTERED started.
------- 开始调度 (调用.start()方法) ----------------
------- 每7秒钟启动一次中断任务(10次中断) ----------
【开始执行】任务Key:group1.interruptableJob1,执行时间: 2017-11-15 09:29:45
—————— 【中断】外界正在调用调度器停止这个任务key:group1.interruptableJob1 ————————
被外界因素停止了这个任务key:group1.interruptableJob1,中断累计次数: 1
【完成任务】key:group1.interruptableJob1 完成时间:2017-11-15 09:29:49
【开始执行】任务Key:group1.interruptableJob1,执行时间: 2017-11-15 09:29:50
【完成任务】key:group1.interruptableJob1 完成时间:2017-11-15 09:29:54
【开始执行】任务Key:group1.interruptableJob1,执行时间: 2017-11-15 09:29:55
—————— 【中断】外界正在调用调度器停止这个任务key:group1.interruptableJob1 ————————
被外界因素停止了这个任务key:group1.interruptableJob1,中断累计次数: 2
【完成任务】key:group1.interruptableJob1 完成时间:2017-11-15 09:29:56
【开始执行】任务Key:group1.interruptableJob1,执行时间: 2017-11-15 09:30:00
—————— 【中断】外界正在调用调度器停止这个任务key:group1.interruptableJob1 ————————
被外界因素停止了这个任务key:group1.interruptableJob1,中断累计次数: 3
【完成任务】key:group1.interruptableJob1 完成时间:2017-11-15 09:30:03
【开始执行】任务Key:group1.interruptableJob1,执行时间: 2017-11-15 09:30:05
【完成任务】key:group1.interruptableJob1 完成时间:2017-11-15 09:30:09
【开始执行】任务Key:group1.interruptableJob1,执行时间: 2017-11-15 09:30:10
【完成任务】key:group1.interruptableJob1 完成时间:2017-11-15 09:30:14
【开始执行】任务Key:group1.interruptableJob1,执行时间: 2017-11-15 09:30:15
—————— 【中断】外界正在调用调度器停止这个任务key:group1.interruptableJob1 ————————
被外界因素停止了这个任务key:group1.interruptableJob1,中断累计次数: 4
【完成任务】key:group1.interruptableJob1 完成时间:2017-11-15 09:30:17
【开始执行】任务Key:group1.interruptableJob1,执行时间: 2017-11-15 09:30:20
—————— 【中断】外界正在调用调度器停止这个任务key:group1.interruptableJob1 ————————
被外界因素停止了这个任务key:group1.interruptableJob1,中断累计次数: 5
【完成任务】key:group1.interruptableJob1 完成时间:2017-11-15 09:30:24
【开始执行】任务Key:group1.interruptableJob1,执行时间: 2017-11-15 09:30:25
【完成任务】key:group1.interruptableJob1 完成时间:2017-11-15 09:30:29
【开始执行】任务Key:group1.interruptableJob1,执行时间: 2017-11-15 09:30:30
—————— 【中断】外界正在调用调度器停止这个任务key:group1.interruptableJob1 ————————
被外界因素停止了这个任务key:group1.interruptableJob1,中断累计次数: 6
【完成任务】key:group1.interruptableJob1 完成时间:2017-11-15 09:30:31
【开始执行】任务Key:group1.interruptableJob1,执行时间: 2017-11-15 09:30:35
—————— 【中断】外界正在调用调度器停止这个任务key:group1.interruptableJob1 ————————
被外界因素停止了这个任务key:group1.interruptableJob1,中断累计次数: 7
【完成任务】key:group1.interruptableJob1 完成时间:2017-11-15 09:30:38
【开始执行】任务Key:group1.interruptableJob1,执行时间: 2017-11-15 09:30:40
【完成任务】key:group1.interruptableJob1 完成时间:2017-11-15 09:30:44
【开始执行】任务Key:group1.interruptableJob1,执行时间: 2017-11-15 09:30:45
【完成任务】key:group1.interruptableJob1 完成时间:2017-11-15 09:30:49
【开始执行】任务Key:group1.interruptableJob1,执行时间: 2017-11-15 09:30:50
—————— 【中断】外界正在调用调度器停止这个任务key:group1.interruptableJob1 ————————
------- 关闭调度 ---------------------
INFO QuartzScheduler - Scheduler DefaultQuartzScheduler_$_NON_CLUSTERED shutting down.
INFO QuartzScheduler - Scheduler DefaultQuartzScheduler_$_NON_CLUSTERED paused.
被外界因素停止了这个任务key:group1.interruptableJob1,中断累计次数: 8
【完成任务】key:group1.interruptableJob1 完成时间:2017-11-15 09:30:52
INFO QuartzScheduler - Scheduler DefaultQuartzScheduler_$_NON_CLUSTERED shutdown complete.
------- 关闭调度器完成 -----------------
~~~~~~~~~~ 执行了 14 个 jobs.
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示例源码
代码已托管到Github—> https://github.com/yangshangwei/SpringMaster