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  • Java的任务调度,使用Cron表达式实现

    通过定时任务调度框架Quartz可以实现某些定时功能,定时执行某些方法等功能。下面提供一个简单的例子,实现Quartz框架的Hello World.

    import org.quartz.CronExpression;
    import org.quartz.CronTrigger;
    import org.quartz.Job;
    import org.quartz.JobDetail;
    import org.quartz.JobExecutionContext;
    import org.quartz.JobExecutionException;
    import org.quartz.Scheduler;
    import org.quartz.SchedulerException;
    import org.quartz.SchedulerFactory;
    import org.quartz.impl.StdSchedulerFactory;
    
    public class DiaoduTest implements Job {
    
        @Override
        public void execute(JobExecutionContext context) throws JobExecutionException {
            System.out.println(new Date() + "天佑最帅!!!");
            
        }
        public static void main(String[] args) {
            JobDetail detail = new JobDetail("job1", "group1", DiaoduTest.class);
            CronTrigger cronTrigger = new CronTrigger("job1", "group1");
            try {
                CronExpression cronExpression = new CronExpression("0/1 * * * * ?");
                cronTrigger.setCronExpression(cronExpression);
                SchedulerFactory factory = new StdSchedulerFactory();
                Scheduler scheduler;
                try {
                    scheduler = factory.getScheduler();
                    try {
                        scheduler.scheduleJob(detail, cronTrigger);
                        scheduler.start();
                    } catch (SchedulerException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                } catch (SchedulerException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                
            } catch (ParseException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }
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  • 原文地址:https://www.cnblogs.com/qiutianyou/p/5513167.html
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