SpringBoot 任务调度动态设置方式(不用重启服务)

@PostConstruct

private void initTimedTask() {

     //初始化任务调度器cron，可以从数据库中查询到cron值

     List<Tweek> tweeks=tweekService.listAll( new Tweek());

     String cron=tweeks.get( 0 ).getCron();

     if ( "" .equals(cron)){

     } else {

         //启动

         setTaskTimedCron(cron);

     }

}

TimedTask taskt;

public void setTaskTimedCron(String cron) {

     if ( null == taskt) {

         taskt= new TimedTask ();

     }

     taskt.restart(cron);

}

public class TimedTask implements Runnable{

     Logger logger = Logger.getLogger(TimedTask . class );

     private ThreadPoolTaskScheduler threadPoolTaskScheduler;

     @Override

     public void run() {

         logger.info( "每月最后一天定时发送彩信任务启动准备发送!" );

         //业务逻辑

     }

     /**

      * 设置cron并启动

      * @param  cron值

      */

     public void restart(String cron) {

         if ( null != this .threadPoolTaskScheduler) {

             ScheduledExecutorService scheduledExecutorService = this .threadPoolTaskScheduler.getScheduledExecutor();

             if (!scheduledExecutorService.isShutdown()) {

                 scheduledExecutorService.shutdownNow();

             }

             this .threadPoolTaskScheduler.destroy();

         }

         if ( null != cron&& cron.trim().length() > 0 ) {

             this .threadPoolTaskScheduler = new ThreadPoolTaskScheduler();

             this .threadPoolTaskScheduler.setThreadNamePrefix( "timedTask " );

             this .threadPoolTaskScheduler.initialize();

             this .threadPoolTaskScheduler.schedule( this , new CronTrigger(cron));

         }

     }

}

package com.david.translate.quartz;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.scheduling.annotation.Scheduled;

import org.springframework.stereotype.Component;

import com.david.translate.service.SysUserService;

@Component

public class TimeQuartz {

     @Autowired

     private SysUserService userService;

     /**

      * 一分钟执行一次

      */

     @Scheduled (cron= "0 0/1 * * * ?" )

     public void executeFileDownLoadTask() {

         System.out.println( ">>>>>>>>>>>>>>>>>>>任务执行 " +userService.findAll().size());

     }

}