Spring Boot 配置 Quartz 定时任务的方法

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-quartz</artifactId>
</dependency>

//java fhadmin.cn
@EnableScheduling
@SpringBootApplication
public class DemoApplication {
 
    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }
 
}

@Slf4j
public class MyJob implements Job {
 
    @Override
    public void execute(JobExecutionContext jobExecutionContext) throws JobExecutionException {
        try {
          
            executeTask(jobExecutionContext);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    //java fhadmin.cn
    private static void executeTask(JobExecutionContext jobExecutionContext) throws SchedulerException {
//JobExecutionContext 类提供了调度应用的一些信息；
//Job 运行时的信息保存在 JobDataMap 实例中。
 
        JobKey key = jobExecutionContext.getJobDetail().getKey();
        System.out.println(new Date()+"->"+key.toString()+"定时任务正在执行");
 
 
    }
 
}

//fhrom fhadmin.cn
@Configuration
public class QuartzManager {
 
   // public static final String JOB1="job1";
   // public static final String GROUP1="group1";
    /**默认每个星期凌晨一点执行*/
    //public static final String DEFAULT_CRON="0 0 1 ? * L";
    /**默认5秒执行一次*/
   // public static final String DEFAULT_CRON="*/5 * * * * ?";
 
    /**
     * 任务调度
     */
 
     private Scheduler scheduler;
 
     @Bean
    public Scheduler scheduler() throws SchedulerException {
        SchedulerFactory schedulerFactoryBean = new StdSchedulerFactory();
        this.scheduler = schedulerFactoryBean.getScheduler();
        return schedulerFactoryBean.getScheduler();
    }
    /**
     * 开始执行定时任务
     */
    public void startJob(String name,String group,String time) throws SchedulerException {
        startJobTask(scheduler,name,group,time);
        scheduler.start();
    }
    /**
     * 启动定时任务
     * @param scheduler
     */
    private void startJobTask(Scheduler scheduler,String  name ,String group,String time) throws SchedulerException {
                                                           //对于身份
        JobDetail jobDetail= JobBuilder.newJob(MyJob.class).withIdentity(name,group).build();
        System.out.println("jobDetail:-------------"+jobDetail);
 
        String DEFAULT_CRON="*/"+time+" * * * * ?";
        // SimpleScheduleBuilder  CronScheduleBuilder  用于构建Scheduler，定义任务调度的时间规则
        CronScheduleBuilder cronScheduleBuilder=CronScheduleBuilder.cronSchedule(DEFAULT_CRON);
        //触发器
        CronTrigger cronTrigger=TriggerBuilder.newTrigger().withIdentity(name,group)
                .withSchedule(cronScheduleBuilder).build();
        scheduler.scheduleJob(jobDetail,cronTrigger);
 
    }
 
    /**
     * 获取Job信息
     * @param name
     * @param group
     */
    public String getjobInfo(String name,String group) throws SchedulerException {
        TriggerKey triggerKey=new TriggerKey(name,group);
        System.out.println("triggerKey:"+triggerKey);
        CronTrigger cronTrigger= (CronTrigger) scheduler.getTrigger(triggerKey);
        return String.format("time:%s,state:%s",cronTrigger.getCronExpression(),
                scheduler.getTriggerState(triggerKey).name());
    }
 
    /**
     * 修改任务的执行时间
     * @param name
     * @param group
     * @param cron cron表达式
     * @return
     * @throws SchedulerException
     */
    public boolean modifyJob(String name,String group,String cron) throws SchedulerException{
        Date date=null;
        TriggerKey triggerKey=new TriggerKey(name, group);
        CronTrigger cronTrigger= (CronTrigger) scheduler.getTrigger(triggerKey);
        String oldTime=cronTrigger.getCronExpression();
        if (!oldTime.equalsIgnoreCase(cron)){
            CronScheduleBuilder cronScheduleBuilder=CronScheduleBuilder.cronSchedule(cron);
            CronTrigger trigger=TriggerBuilder.newTrigger().withIdentity(name,group)
                    .withSchedule(cronScheduleBuilder).build();
            date=scheduler.rescheduleJob(triggerKey,trigger);
        }
        return date !=null;
    }
 
    /**
     * 暂停所有任务
     * @throws SchedulerException
     */
    public void pauseAllJob()throws SchedulerException{
        scheduler.pauseAll();
    }
 
    /**
     * 暂停某个任务
     * @param name
     * @param group
     * @throws SchedulerException
     */
    public void pauseJob(String name,String group)throws SchedulerException{
        JobKey jobKey=new JobKey(name,group);
        JobDetail jobDetail=scheduler.getJobDetail(jobKey);
        if (jobDetail==null) {
            return;
        }
        scheduler.pauseJob(jobKey);
    }
 
    /**
     * 恢复所有任务
     * @throws SchedulerException
     */
    public void resumeAllJob()throws SchedulerException{
        scheduler.resumeAll();
    }
    /**
     * 恢复某个任务
     */
    public void resumeJob(String name,String group)throws SchedulerException {
        JobKey jobKey=new JobKey(name,group);
        JobDetail jobDetail=scheduler.getJobDetail(jobKey);
        if (jobDetail==null) {
            return;
        }
        scheduler.resumeJob(jobKey);
    }
 
    /**
     * 删除某个任务
     * @param name
     * @param group
     * @throws SchedulerException
     */
    public void deleteJob(String name,String group)throws SchedulerException{
        JobKey jobKey=new JobKey(name, group);
        JobDetail jobDetail=scheduler.getJobDetail(jobKey);
        if (jobDetail==null) {
            return;
        }
        scheduler.deleteJob(jobKey);
    }
 
}

//fhadmin.cn
@RestController
@RequestMapping("/quartz")
public class ModifyCronController {
 
    @Autowired
    private QuartzManager quartzManager;
    @GetMapping("/modify")
    public String modify(@RequestParam("job")String job,   //job的名称
                         @RequestParam("group")String group,//job的组
                         @RequestParam("time")String time   //执行定时任务的步长
     ) throws SchedulerException {
       
       // quartzManager.pauseJob(QuartzManager.JOB1,QuartzManager.GROUP1);
        quartzManager.startJob(job,group,time);
        String s = quartzManager.getjobInfo(job, group);
        System.out.println("job:"+s);
 
        return "ok";
    }
}