202108171347 - quartz使用

1. MyJob类

public class HelloJob implements Job {  
    @Override  
 public void execute(JobExecutionContext context) throws JobExecutionException {  

        System.out.println("hello ,,, ");  
 }  
}

2. 使用scheduler

public class MyQuartz {  
  
    public static void main(String[] args) {  
  
        try {  
            StdSchedulerFactory stdSchedulerFactory = new StdSchedulerFactory();  
 // 1.创建调度器  
 Scheduler scheduler = stdSchedulerFactory.getScheduler();  
 scheduler.start();  
  
 // 2.  
 // define the job and tie it to our HelloJob class JobDetail job = newJob(HelloJob.class)  
                    .withIdentity("JOBS1", "GROUP1")  
                    .build();  
  
 // 3. 创建触发器  
 // Trigger the job to run now, and then repeat every 3 seconds  
 Trigger trigger = newTrigger()  
                    .withIdentity("trigger1", "group1")  
                    .startNow()  
                    .withSchedule(simpleSchedule()  
                            .withIntervalInSeconds(3)  
                            .repeatForever())  
                    .build();  
  
 // 4.  
 // Tell quartz to schedule the job using our trigger scheduler.scheduleJob(job, trigger);  
  
 // sleep 20秒以便观察 输出及调度情况  
 try {  
                TimeUnit.SECONDS.sleep(20);  
 } catch (InterruptedException e) {  
                e.printStackTrace();  
 }  
  
            scheduler.shutdown();  
  
 } catch (SchedulerException e) {  
            e.printStackTrace();  
 }  
  
    }  
  
}