zoukankan      html  css  js  c++  java
  • 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();
            }
        }
    }
  • 相关阅读:
    简单的StringBuffer实现
    Java-HashMap、HashSet、hashTable
    JavaScript 引用错误
    使用jconsole分析内存情况-JVM
    Thread 与 Runnable 混合使用测试
    裴波那序列-JAVA实现
    多线程之----------线程池
    winform 控件拖拽和缩放
    C# 使用Process调用外部程序中所遇到的参数问题
    winform textbox 的自动实现功能
  • 原文地址:https://www.cnblogs.com/qiutianyou/p/5513167.html
Copyright © 2011-2022 走看看