quartz定时任务_演示版01

预置:

quartz共4个设计模式:Builder模式,Factory模式,组件模式,链式模式

体系结果:核心3个类JobDetail , trigger , scheduler

重要组成部分:Job接口、JobBuilder、JobDetail、JobStore

                         TriggerBuilder、Trigger

                                         Scheduler

                         接听器:JobListener、TriggerListener、SchedulerListener

                         ThreadPool (线程池,解决并发问题)

                          Calendar (排除日程表中某些时间点)

=====================================================================

1.新建maven项目

 

2.在http://www.mvnrepository.com/中找到quartz的jar包依赖代码引入pom.xml文件

<dependency>
<groupId>org.quartz-scheduler</groupId>
<artifactId>quartz</artifactId>
<version>2.2.1</version>
</dependency>

 

3.实现job接口的execute方法:

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 {
//实现job接口execute方法具体内容
public void execute(JobExecutionContext arg0) throws JobExecutionException{
//打印当前执行时间 格式:2017-01-01 00:00:00
Date date = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
System.out.println("current exec time is :"+sdf.format(date));

//编写具体业务逻辑
System.out.println("helloJob类 实现了 Job接口的execute方法");
}
}

 

4.main方法中实现任务的创建运行

import java.text.SimpleDateFormat;
import java.util.Date;
import org.quartz.JobBuilder;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.quartz.SchedulerFactory;
import org.quartz.SimpleScheduleBuilder;
import org.quartz.Trigger;
import org.quartz.TriggerBuilder;
import org.quartz.impl.StdSchedulerFactory;

/*
* 20180103 ver1.0
*/
public class helloSchedule {

public static void main(String[] args) throws SchedulerException {
// TODO Auto-generated method stub

// 创建一个JobDetail实例 将HelloJob类添加到JobDetail中
JobDetail jobDetail = JobBuilder.newJob(helloJob.class)
.withIdentity("myJob", "jobDetailGroup")
.build();
//创建一个Trigger实例,定义该job立即执行,每隔两秒钟重复执行一次,一直不停
Trigger trigger = TriggerBuilder.newTrigger()
.withIdentity("myTrigger","triggerGroup")
.startNow().withSchedule(
SimpleScheduleBuilder.simpleSchedule()
.withIntervalInSeconds(2)
.repeatForever())
.build();
//创建Schduler实例
SchedulerFactory sfFactory = new StdSchedulerFactory();
Scheduler scheduler = sfFactory.getScheduler();
scheduler.start();

//打印当前时间
Date date = new Date();
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
System.out.println("current scheduler time is :"+sdf.format(date));
scheduler.scheduleJob(jobDetail, trigger);

}

}

 

5.运行结果:

current scheduler time is :2018-01-03 15:08:54
current exec time is :2018-01-03 15:08:54
helloJob类 实现了 Job接口的execute方法
current exec time is :2018-01-03 15:08:56
helloJob类 实现了 Job接口的execute方法
current exec time is :2018-01-03 15:08:58
helloJob类 实现了 Job接口的execute方法
current exec time is :2018-01-03 15:09:00
helloJob类 实现了 Job接口的execute方法
current exec time is :2018-01-03 15:09:02
helloJob类 实现了 Job接口的execute方法
current exec time is :2018-01-03 15:09:04
helloJob类 实现了 Job接口的execute方法
current exec time is :2018-01-03 15:09:06
helloJob类 实现了 Job接口的execute方法

posted @ 2018-01-03 16:29  imlvbu  阅读(191)  评论(0编辑  收藏  举报