Question

我想重新安排石英作业。我经历了一些提出的答案（例如How to reschedule the job execution interval in Quartz?）。

我想做的是：

计划在给定时间运行
重新安排作业，使其每分钟重复两次。

因此，一般来说，该作业应被触发3次。

我的主班：

    public class Main{



          public static void main(String[] args) throws Exception {

                JobDetail job = JobBuilder.newJob(HelloJob.class)
                        .withIdentity("dummyJobName", "group1").build();

                    Trigger trigger = TriggerBuilder.newTrigger()
                        .withIdentity("dummyTriggerName", "group1")
                        .withSchedule(
                                CronScheduleBuilder.cronSchedule("0 41 16 1/1 * ? *"))
                        .build();

                    Scheduler scheduler = new StdSchedulerFactory().getScheduler();
                    scheduler.start();
                    scheduler.scheduleJob(job, trigger);
          }

}

和Job类：

public class HelloJob implements Job{



    public void execute(JobExecutionContext context)
            throws JobExecutionException {

                System.out.println("Hello Quartz!  " + context.getTrigger().toString());    
                Trigger newTrigger = TriggerBuilder.newTrigger()
                        .withIdentity("dummyTriggerName", "group1")
                        .withSchedule(
                                SimpleScheduleBuilder.repeatMinutelyForTotalCount(2))
                        .build();

                Trigger oldTrigger = context.getTrigger();
                Scheduler scheduler = null;
                try {
                    scheduler = StdSchedulerFactory.getDefaultScheduler();
                    scheduler.rescheduleJob(oldTrigger.getKey(), newTrigger);

                } catch (SchedulerException e1) {
                    e1.printStackTrace();
                }

            }
}

当我运行代码时，它会给我：

Hello Quartz!  Trigger 'group1.dummyTriggerName':  triggerClass: 'org.quartz.impl.triggers.SimpleTriggerImpl calendar: 'null' misfireInstruction: 0 nextFireTime: Sun Jun 02 16:42:00 CEST 2019
Hello Quartz!  Trigger 'group1.dummyTriggerName':  triggerClass: 'org.quartz.impl.triggers.SimpleTriggerImpl calendar: 'null' misfireInstruction: 0 nextFireTime: Sun Jun 02 16:42:00 CEST 2019
Hello Quartz!  Trigger 'group1.dummyTriggerName':  triggerClass: 'org.quartz.impl.triggers.SimpleTriggerImpl calendar: 'null' misfireInstruction: 0 nextFireTime: Sun Jun 02 16:42:00 CEST 2019
Hello Quartz!  Trigger 'group1.dummyTriggerName':  triggerClass: 'org.quartz.impl.triggers.SimpleTriggerImpl calendar: 'null' misfireInstruction: 0 nextFireTime: Sun Jun 02 16:42:00 CEST 2019
Hello Quartz!  Trigger 'group1.dummyTriggerName':  triggerClass: 'org.quartz.impl.triggers.SimpleTriggerImpl calendar: 'null' misfireInstruction: 0 nextFireTime: Sun Jun 02 16:42:00 CEST 2019
Hello Quartz!  Trigger 'group1.dummyTriggerName':  triggerClass: 'org.quartz.impl.triggers.SimpleTriggerImpl calendar: 'null' misfireInstruction: 0 nextFireTime: Sun Jun 02 16:42:00 CEST 2019
Hello Quartz!  Trigger 'group1.dummyTriggerName':  triggerClass: 'org.quartz.impl.triggers.SimpleTriggerImpl calendar: 'null' misfireInstruction: 0 nextFireTime: Sun Jun 02 16:42:00 CEST 2019
Hello Quartz!  Trigger 'group1.dummyTriggerName':  triggerClass: 'org.quartz.impl.triggers.SimpleTriggerImpl calendar: 'null' misfireInstruction: 0 nextFireTime: Sun Jun 02 16:42:00 CEST 2019
Hello Quartz!  Trigger 'group1.dummyTriggerName':  triggerClass: 'org.quartz.impl.triggers.SimpleTriggerImpl calendar: 'null' misfireInstruction: 0 nextFireTime: Sun Jun 02 16:42:00 CEST 2019
Hello Quartz!  Trigger 'group1.dummyTriggerName':  triggerClass: 'org.quartz.impl.triggers.SimpleTriggerImpl calendar: 'null' misfireInstruction: 0 nextFireTime: Sun Jun 02 16:42:00 CEST 2019
Hello Quartz!  Trigger 'group1.dummyTriggerName':  triggerClass: 'org.quartz.impl.triggers.SimpleTriggerImpl calendar: 'null' misfireInstruction: 0 nextFireTime: Sun Jun 02 16:42:00 CEST 2019
Hello Quartz!  Trigger 'group1.dummyTriggerName':  triggerClass: 'org.quartz.impl.triggers.SimpleTriggerImpl calendar: 'null' misfireInstruction: 0 nextFireTime: Sun Jun 02 16:42:00 CEST 2019
......

这在控制台中就像每秒重复多次，并且无法停止。原始的触发器会按预期触发（来自Main类），但是在HelloJob类中重新安排时，它会发疯。

我不明白为什么会这样。我在做什么错了？

如何正确重新安排石英作业

0 个答案: