Quartz 任务调度：初体验

package org.quartz.examples.example1; 

import java.util.Date; 

import org.apache.commons.logging.Log; 
import org.apache.commons.logging.LogFactory; 
import org.quartz.JobDetail; 
import org.quartz.Scheduler; 
import org.quartz.SchedulerFactory; 
import org.quartz.SimpleTrigger; 
import org.quartz.TriggerUtils; 
import org.quartz.impl.StdSchedulerFactory; 

/** 
* This Example will demonstrate how to start and shutdown the Quartz 
* scheduler and how to schedule a job to run in Quartz. 
* 
* @author Bill Kratzer 
*/ 
public  class SimpleExample { 

     public  void run()  throws Exception { 
        Log log = LogFactory.getLog(SimpleExample. class); 

        log.info( "------- 初始化开始 ----------------------"); 
         // 首先创建一个调度程序工厂 
        SchedulerFactory schedulerFactory =  new StdSchedulerFactory(); 
         // 从工厂获取一个调度程序实例 
        Scheduler scheduler = schedulerFactory.getScheduler(); 
        log.info( "------- 初始化完成 -----------"); 

        log.info( "------- 调度任务 -------------------"); 

         // 设置作业调度时间：某一时间后的下一秒 
        Date runTime = TriggerUtils.getEvenMinuteDate( new Date()); 

         // 定义一个具体作业job1，并加入group1组，并且绑定到具体的作业类HelloJob上 
        JobDetail jobDetail =  new JobDetail( "job1",  "group1", HelloJob. class); 

         // 创建一个简单的触发器 
        SimpleTrigger simpleTrigger =  new SimpleTrigger( "trigger1",  "group1"); 
         // 设置触发时间 
        simpleTrigger.setStartTime(runTime); 
         // 设置重复执行周期 
        simpleTrigger.setRepeatInterval(2000); 
         // 设置重复执行次数 
        simpleTrigger.setRepeatCount(3); 


         // 设置调度的具体作业和相关的触发器 
        scheduler.scheduleJob(jobDetail, simpleTrigger); 
        log.info(jobDetail.getFullName() +  " 将在某时刻: " + runTime + " 运行!"); 

         // 启动调度程序 
        scheduler.start(); 
        log.info( "------- 已启动调度程序 -----------------"); 

         // wait long enough so that the scheduler as an opportunity to  
         // run the job! 
        log.info( "------- 等待15秒... -------------"); 
         try { 
             // 等待15秒显示 
            Thread.sleep(15L * 1000L); 
             // 执行...... 
        }  catch (Exception e) { 
        } 

         // 关闭调度程序 
        log.info( "------- 关闭调度程序开始 ---------------------"); 
        scheduler.shutdown( true); 
        log.info( "------- 关闭调度程序完成 -----------------"); 
    } 

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

        SimpleExample example =  new SimpleExample(); 
        example.run(); 

    } 
}

package org.quartz.examples.example1; 

import org.apache.commons.logging.Log; 
import org.apache.commons.logging.LogFactory; 
import org.quartz.Job; 
import org.quartz.JobExecutionContext; 
import org.quartz.JobExecutionException; 

import java.util.Date; 

/** 
* <p> 
* This is just a simple job that says "Hello" to the world. 
* 一个简单的作业，来自Quartz的Simple Examples。 
* </p> 
* 
* @author Bill Kratzer 
*/ 
public  class HelloJob  implements Job { 

     private  static Log _log = LogFactory.getLog(HelloJob. class); 

     /** 
     * <p> 
     * Empty constructor for job initilization 
     * </p> 
     * <p> 
     * Quartz requires a public empty constructor so that the 
     * scheduler can instantiate the class whenever it needs. 
     * </p> 
     */ 
     public HelloJob() { 
    } 

     /** 
     * <p> 
     * Called by the <code>{@link org.quartz.Scheduler}</code> when a 
     * <code>{@link org.quartz.Trigger}</code> fires that is associated with 
     * the <code>Job</code>. 
     * </p> 
     * 
     * @throws JobExecutionException if there is an exception while executing the job. 
     */ 
     public  void execute(JobExecutionContext context) 
             throws JobExecutionException { 

         // Say Hello to the World and display the date/time 
        _log.info( "Hello World! - " +  new Date()); 
    } 
}

2008-08-21 00:01:06  - INFO  org.quartz.examples.example1.SimpleExample     - ------- 初始化开始 ---------------------- 
2008-08-21 00:01:07  - INFO  org.quartz.simpl.SimpleThreadPool     - Job execution threads will use class loader of thread: main 
2008-08-21 00:01:07  - INFO  org.quartz.core.QuartzScheduler     - Quartz Scheduler v.1.6.0 created. 
2008-08-21 00:01:07  - INFO  org.quartz.simpl.RAMJobStore     - RAMJobStore initialized. 
2008-08-21 00:01:07  - INFO  org.quartz.impl.StdSchedulerFactory     - Quartz scheduler 'DefaultQuartzScheduler' initialized from default resource file in Quartz package: 'quartz.properties' 
2008-08-21 00:01:07  - INFO  org.quartz.impl.StdSchedulerFactory     - Quartz scheduler version: 1.6.0 
2008-08-21 00:01:07  - INFO  org.quartz.examples.example1.SimpleExample     - ------- 初始化完成 ----------- 
2008-08-21 00:01:07  - INFO  org.quartz.examples.example1.SimpleExample     - ------- 调度任务 ------------------- 
2008-08-21 00:01:07  - INFO  org.quartz.examples.example1.SimpleExample     - group1.job1 将在某时刻: Thu Aug 21 00:02:00 CST 2008 运行! 
2008-08-21 00:01:07  - INFO  org.quartz.core.QuartzScheduler     - Scheduler DefaultQuartzScheduler_$_NON_CLUSTERED started. 
2008-08-21 00:01:07  - INFO  org.quartz.examples.example1.SimpleExample     - ------- 已启动调度程序 ----------------- 
2008-08-21 00:01:07  - INFO  org.quartz.examples.example1.SimpleExample     - ------- 等待15秒... ------------- 
2008-08-21 00:01:09  - INFO  org.quartz.examples.example1.SimpleExample     - ------- 关闭调度程序开始 --------------------- 
2008-08-21 00:01:09  - INFO  org.quartz.core.QuartzScheduler     - Scheduler DefaultQuartzScheduler_$_NON_CLUSTERED shutting down. 
2008-08-21 00:01:09  - INFO  org.quartz.core.QuartzScheduler     - Scheduler DefaultQuartzScheduler_$_NON_CLUSTERED paused. 
2008-08-21 00:01:09  - INFO  org.quartz.simpl.SimpleThreadPool     - There are still 13 worker threads active. See javadoc runInThread(Runnable) for a possible explanation 
2008-08-21 00:01:09  - INFO  org.quartz.core.QuartzScheduler     - Scheduler DefaultQuartzScheduler_$_NON_CLUSTERED shutdown complete. 
2008-08-21 00:01:09  - INFO  org.quartz.examples.example1.SimpleExample     - ------- 关闭调度程序完成 ----------------- 

Process finished with exit code 0