Quartz使用

Posted 2020-09-28 oneqhw

Quartz定时器使用比价广泛，介绍一点简单的使用

上代码：
定义一个Job，执行具体的任务

package org.tonny.quartz;

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

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

public class HelloJob implements Job
{

	@Override
	public void execute(JobExecutionContext context) throws JobExecutionException
	{
		/**
		 * 执行具体的任务
		 */
		// 获取传递的参数
		Object param = context.getJobDetail().getJobDataMap().get("data");
		System.out.println(format(param.toString()));
	}

	/**
	 * 格式化输出，
	 * 
	 * @param info
	 * @return
	 */
	private String format(String info)
	{
		Date date = new Date();
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		String time = sdf.format(date);

		return String.format("%s: The result is %s", time, info);
	}

}

 

Job的执行

package org.tonny.quartz;

import java.util.HashMap;
import java.util.Map;

import org.quartz.JobBuilder;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerFactory;
import org.quartz.SimpleScheduleBuilder;
import org.quartz.Trigger;
import org.quartz.TriggerBuilder;
import org.quartz.impl.StdSchedulerFactory;

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

		// 创建一个JobDetail实例，将该实例与HelloJob Class绑定
		JobDetail jobDetail = JobBuilder.newJob(HelloJob.class).withIdentity("HelloJob", "HelloGroup").build();
		Map<String, Object> data = new HashMap<String, Object>();
		data.put("hello", "quartz");
		jobDetail.getJobDataMap().put("data", data);

		// 创建一个Trigger实例，定义该Job立即执行，并且每隔2秒执行一次
		// 注意Trigger中的HelloGroup与JobDetail中虽然名字相同，但两个是不一样的，因为在不同的类空间
		Trigger trigger = TriggerBuilder.newTrigger().
				withIdentity("HelloTrigger", "HelloGroup")
				.withSchedule(SimpleScheduleBuilder
						.simpleSchedule()
						.withIntervalInSeconds(2)
						.repeatForever())
						.startNow().build();

		// 创建scheduler实例
		SchedulerFactory schedulerFactory = new StdSchedulerFactory();
		Scheduler scheduler = schedulerFactory.getScheduler();

		// 将job和触发器进行关联
		scheduler.scheduleJob(jobDetail, trigger);
		scheduler.start();

		try
		{// 主线程等待
			Thread.sleep(300000L);
		}
		catch (Exception e)
		{
			e.printStackTrace();
		}

		// 关闭调度器
		scheduler.shutdown(true);

	}
}

好了就这样吧