Jfinal中定时器的初步探索（一）

1、添加包引用：/jfinal_demo/WebContent/WEB-INF/lib/quartz-all-1.6.1.jar

注意版本号，这个版本是现在项目中使用的，已经有更高版本了，但这版比较稳定。

2、添加Job的实现类：

package cn.jfinal.job;

import java.text.SimpleDateFormat;
import java.util.Date;

import org.apache.log4j.Logger;
import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;


public class RedPacketValidate implements Job{
	private static final Logger log = Logger.getLogger(RedPacketValidate.class);
	

	@Override
	public void execute(JobExecutionContext arg0) throws JobExecutionException {
		// TODO Auto-generated method stub
		validate();
		
	}

	private void validate() {
		// TODO Auto-generated method stub
		SimpleDateFormat FORMAT = new SimpleDateFormat("yy/MM/dd HH:mm:ss");
		String msgString="当前时间："+FORMAT.format(new Date());
		log.info("红包定时器开始扫描……"+msgString);
		 System.out.println(msgString);
	}

}

　　

三、添加调度类：

有了干活的，得通知他什么时候干活，怎么干。

SimpleScheduler  简单调度，以后会有复杂调度类，敬请期待。

package cn.jfinal.job;

import java.util.Date;

import org.apache.log4j.Logger;
import org.junit.Test;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.quartz.Trigger;
import org.quartz.TriggerUtils;
import org.quartz.impl.StdSchedulerFactory;


public class SimpleScheduler {
	
	private static final Logger log = Logger.getLogger(SimpleScheduler.class);   
	
	@Test
    public  void testScheduler() 
    {       
         SimpleScheduler simple = new SimpleScheduler();       
         try
         {       
             // Create a Scheduler and schedule the Job       
             Scheduler scheduler = simple.createScheduler();       
             simple.scheduleJob(scheduler);       
    
             // Start the Scheduler running       
             scheduler.start();       
    
             log.info( "Scheduler started at " + new Date());       
    
        } catch (SchedulerException ex) {       
        	log.error(ex);       
        }   
        
    } 
	
	public Scheduler createScheduler() throws SchedulerException 
    {   //创建调度器       
        return StdSchedulerFactory.getDefaultScheduler();
    } 
	
	 //Create and Schedule a RedPacketValidate with the Scheduler       

    public void scheduleJob(Scheduler scheduler) throws SchedulerException 
    {       

         // Create a JobDetail for the Job       
         JobDetail jobDetail = new JobDetail("RedPacketValidate",Scheduler.DEFAULT_GROUP,RedPacketValidate.class); 

         // Configure the directory to scan       
         //jobDetail.getJobDataMap().put("SCAN_DIR","D:\Tomcat\conf"); //set the JobDataMap that is associated with the Job.            

         // Create a trigger that fires every 10 seconds, forever       
         Trigger trigger = TriggerUtils.makeSecondlyTrigger(10);//每10秒触发一次       

         trigger.setName("scanTrigger");       

         // Start the trigger firing from now       
         trigger.setStartTime(new Date());//设置第一次触发时间            

         // Associate the trigger with the job in the scheduler       
         scheduler.scheduleJob(jobDetail, trigger);       
    }       


}

　　

四、在web中使用:

SimpleScheduler simple = new SimpleScheduler();
		try {
			// Create a Scheduler and schedule the Job
			Scheduler scheduler = simple.createScheduler();
			simple.scheduleJob(scheduler);

			// Start the Scheduler running
			scheduler.start();

			log.info("Scheduler started at " + new Date());

		} catch (SchedulerException ex) {
			log.error(ex);
		}

　　

五、注意引用job用到的jar包：