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：