在定时任务类上增加@EnableScheduling注解，并实现SchedulingConfigurer接口。（注意低版本无效）
设置一个静态变量cron，用于存放任务执行周期参数。
另辟一线程，用于模拟实际业务中外部原因修改了任务执行周期。
设置任务触发器，触发任务执行，其中就可以修改任务的执行周期。
Class ： SpringDynamicCornTask
package com.xindatai.ibs.lime.dycSchedul;
import java.util.Date;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Lazy;
import org.springframework.scheduling.Trigger;
import org.springframework.scheduling.TriggerContext;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.SchedulingConfigurer;
import org.springframework.scheduling.config.ScheduledTaskRegistrar;
import org.springframework.scheduling.support.CronTrigger;
import org.springframework.stereotype.Component;
* Spring动态周期定时任务 在不停应用的情况下更改任务执行周期
* @author Liang
* 2017年6月1日
@Lazy(false)
@Component
@EnableScheduling
public class SpringDynamicCornTask implements SchedulingConfigurer {
private static final Logger logger = LoggerFactory.getLogger(SpringDynamicCornTask.class);
private static String cron;
private SpringDynamicCornTask() {
cron = "0/5 * * * * ?";
// 开启新线程模拟外部更改了任务执行周期
new Thread(new Runnable() {
@Override
public void run() {
try {
Thread.sleep(15 * 1000);
} catch (InterruptedException e) {
e.printStackTrace();
cron = "0/10 * * * * ?";
System.out.println("cron change to : " + cron);
}).start();
@Override
public void configureTasks(ScheduledTaskRegistrar taskRegistrar) {
taskRegistrar.addTriggerTask(new Runnable() {
@Override
public void run() {
// 任务逻辑
logger.info("dynamicCronTask is running...");
}, new Trigger() {
@Override
public Date nextExecutionTime(TriggerContext triggerContext) {
// 任务触发，可修改任务的执行周期
CronTrigger trigger = new CronTrigger(cron);
Date nextExecutionTime = trigger.nextExecutionTime(triggerContext);
return nextExecutionTime;
Console ：
[INFO 2017-06-01 12:26:25 SpringDynamicCornTask] - dynamicCronTask is running...
[INFO 2017-06-01 12:26:30 SpringDynamicCornTask] - dynamicCronTask is running...
[INFO 2017-06-01 12:26:35 SpringDynamicCornTask] - dynamicCronTask is running...
cron change to : 0/10 * * * * ?
[INFO 2017-06-01 12:26:40 SpringDynamicCornTask] - dynamicCronTask is running...
[INFO 2017-06-01 12:26:50 SpringDynamicCornTask] - dynamicCronTask is running...
[INFO 2017-06-01 12:27:00 SpringDynamicCornTask] - dynamicCronTask is running...
