SimpleTrigger 简单触发器

最新推荐文章于 2022-07-25 08:36:04 发布

最新推荐文章于 2022-07-25 08:36:04 发布 · 400 阅读

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本文介绍了如何使用Java Quartz框架创建一个简单的定时任务，并详细解释了任务触发器中各种参数的作用，尤其是EndTime与RepeatCount之间的优先级关系。

public void task() throws SchedulerException

    {

        // Initiate a Schedule Factory

        SchedulerFactory schedulerFactory = new StdSchedulerFactory();

        // Retrieve a scheduler from schedule factory

        Scheduler scheduler = schedulerFactory.getScheduler();



        // current time

        long ctime = System.currentTimeMillis(); 



        // Initiate JobDetail with job name, job group, and executable job class

        JobDetail jobDetail = 

        	new JobDetail("jobDetail-s1", "jobDetailGroup-s1", SimpleQuartzJob.class);

        // Initiate SimpleTrigger with its name and group name

        SimpleTrigger simpleTrigger = 

        	new SimpleTrigger("simpleTrigger", "triggerGroup-s1");

        // set its start up time

        simpleTrigger.setStartTime(new Date(ctime));

        // set the interval, how often the job should run (10 seconds here) 

        simpleTrigger.setRepeatInterval(10000);

        // set the number of execution of this job, set to 10 times. 

        // It will run 10 time and exhaust.

        simpleTrigger.setRepeatCount(100);

        // set the ending time of this job. 

        // We set it for 60 seconds from its startup time here

        // Even if we set its repeat count to 10, 

        // this will stop its process after 6 repeats as it gets it endtime by then.

        //simpleTrigger.setEndTime(new Date(ctime + 60000L));

        // set priority of trigger. If not set, the default is 5

        //simpleTrigger.setPriority(10);

        // schedule a job with JobDetail and Trigger

        scheduler.scheduleJob(jobDetail, simpleTrigger);



        // start the scheduler

        scheduler.start();

    }

注意:
[color=red] // set the ending time of this job.

// We set it for 60 seconds from its startup time here

// Even if we set its repeat count to 10,

// this will stop its process after 6 repeats as it gets it endtime by then.

//simpleTrigger.setEndTime(new Date(ctime + 60000L));[/color]
[color=darkred][size=x-large]也就是说EndTime优先级比repeatcount高[/size][/color]