利用Quartz实现定时执行任务

最新推荐文章于 2024-08-02 15:38:46 发布

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最新推荐文章于 2024-08-02 15:38:46 发布

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分类专栏： Java学习笔记

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本文介绍了一个使用Quartz实现的定时任务案例，该任务每天从5点到8点每两秒执行一次。文章展示了如何创建并配置定时任务，包括定义Job、触发器以及通过QuartzManager启动调度。

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需要的jar包为：quartz-1.6.5.jar、commons-logging-1.1.3.jar、commons-collections-3.1.jar

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

import org.quartz.SchedulerException;

public class QuartzTest {
	public static void main(String[] args) throws SchedulerException, ParseException {
		SimpleDateFormat DateFormat = new SimpleDateFormat("yyyyMMddHHmmss"); 
		Date d = new Date();  
		String returnstr = DateFormat.format(d);
		TestJob job = new TestJob();
		String job_name ="11";  
		System.out.println(returnstr+ "【系统启动】"); 
		QuartzManager.addJob(job_name,job,"0/2 * 5-8 * * ?"); //每天5点至8点每隔2秒执行一次 
	}
}

import java.text.ParseException;

import org.quartz.CronTrigger;
import org.quartz.Job;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.quartz.SchedulerFactory;
import org.quartz.impl.StdSchedulerFactory;

public class QuartzManager {
	private static SchedulerFactory sf = new StdSchedulerFactory();
	private static String JOB_GROUP_NAME = "group1";
	private static String TRIGGER_GROUP_NAME = "trigger1";

	public static void addJob(String jobName, Job job, String time)
			throws SchedulerException, ParseException {
		Scheduler sched = sf.getScheduler();
		JobDetail jobDetail = new JobDetail(jobName, JOB_GROUP_NAME,
				job.getClass());
		CronTrigger trigger = new CronTrigger(jobName, TRIGGER_GROUP_NAME);
		trigger.setCronExpression(time);
		sched.scheduleJob(jobDetail, trigger);
		if (!sched.isShutdown())
			sched.start();
	}

}

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

import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;

public class TestJob implements Job {
	SimpleDateFormat DateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 
	Date d = new Date();
	String returnstr = DateFormat.format(d); 

	public void execute(JobExecutionContext arg0) throws JobExecutionException {
		//需要执行业务内容
		System.out.println(returnstr+"★★★★★★★★★★★"); 
	}
	
}