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）
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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