package com.kfit.task;import java.util.Date;
import java.util.concurrent.ScheduledFuture;
import org.springframework.beans.factory.annotation.Autowired;import org.springframework.context.annotation.Bean;
import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
import org.springframework.scheduling.support.CronTrigger;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController; /*** @author Angel --守护天使* @version v.0.1* @date 2017年4月6日*/@RestController
@Component
public class DynamicTask { @Autowiredprivate ThreadPoolTaskScheduler threadPoolTaskScheduler; private ScheduledFuture<?> future; @Beanpublic ThreadPoolTaskScheduler threadPoolTaskScheduler() {return new ThreadPoolTaskScheduler();} @RequestMapping("/startCron")public String startCron() {if(null == future || future.isCancelled()){//判断第一次开启和避免重复开启产生多条线程future = threadPoolTaskScheduler.schedule(new MyRunnable(), new CronTrigger("0/5 * * * * *"));System.out.println("DynamicTask.startCron()");　　　　}return "startCron";} @RequestMapping("/stopCron")public String stopCron() {if (future != null && !future.isCancelled()) {future.cancel(true);}System.out.println("DynamicTask.stopCron()");return "stopCron";}@RequestMapping("/changeCron10")public String startCron10() {stopCron();// 先停止，在开启.future = threadPoolTaskScheduler.schedule(new MyRunnable(), new CronTrigger("*/10 * * * * *"));System.out.println("DynamicTask.startCron10()");return "changeCron10";}private class MyRunnable implements Runnable {@Overridepublic void run() {System.out.println("DynamicTask.MyRunnable.run()，" + new Date());}}
}

小结：

private String cronStr = "*/5 * * * * *";@RequestMapping("/startCron1")public String startCron1(){System.out.println("startCron1 >>>>");threadPoolTaskScheduler.schedule(new MyRunnable(), new Trigger(){@Overridepublic Date nextExecutionTime(TriggerContext triggerContext){returnnew CronTrigger(cronStr).nextExecutionTime(triggerContext);}});System.out.println("startCron1 <<<<");return "startCron1";}