springboot实现schedule任务的动态开关和控制

Application类上加@EnableScheduling注解。
DynamicTask类代码：

@RestController
@RequestMapping("/task")
public class DynamicTask {
    private static String DEFAULT_CRON = "0/5 * * * * ?";
    @Autowired
    private ThreadPoolTaskScheduler threadPoolTaskScheduler;
    private ScheduledFuture<?> future;
    @Bean
    public ThreadPoolTaskScheduler threadPoolTaskScheduler() {
        return new ThreadPoolTaskScheduler();
    }
    @RequestMapping("/startCron")
    public String startCron() {
        future = threadPoolTaskScheduler.schedule(new MyRunnable(), new CronTrigger(DEFAULT_CRON));
        System.out.println("start cron");
        return "startCron";
    }
    @RequestMapping("/stopCron")
    public String stopCron()  {
        if (future != null) {
            future.cancel(true);
        }
        System.out.println("stop cron");
        return "stopCron";
    }
    @RequestMapping("/changeCron10")
    public String changeCron10() {
        stopCron();// 先停止，在开启.
        future = threadPoolTaskScheduler.schedule(new MyRunnable(), new CronTrigger("*/10 * * * * *"));
        System.out.println("changeCron10");
        return "changeCron10";
    }
    private class MyRunnable implements Runnable {
        @Override
        public void run() {
            System.out.println("run ，" + new Date());
        }
    }
}

启动项目，一开始是没有计划任务的。

http://localhost:8080/task/startCron
启动任务，5秒执行一次
http://localhost:8080/task/stopCron
停止任务，不再执行了
http://localhost:8080/task/changeCron10
修改任务，10秒执行一次