Quartz学习——Quartz简单入门Demo(二)

要学习Quartz框架,首先大概了解了Quartz的基本知识后,在通过简单的例子入门,一步一个脚印的走下去。
下面介绍Quartz入门的示例,由于Quartz的存储方式分为RAM和JDBC,分别对这两种进行简单的说明。并附上代码!
首先需要添加Quartz的Jar包 ,我使用的是quartz.2.2.1版本!
Demo代码下载地址:quartz_demo

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

1:RAM方式
要测试RAMdemo的代码,请先删除demo中这个quartz.properties文件,或者重命名!否则会测试不成功!
(1):Job

package com.dufy.learn;

import java.util.Date;

import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class RAMJob implements Job{
	
	private static Logger _log = LoggerFactory.getLogger(RAMJob.class);
	
	@Override
	public void execute(JobExecutionContext arg0) throws JobExecutionException {
		
		_log.info("Say hello to Quartz" + new Date());
	}
	
}

(2):QuartzTest

package com.dufy.learn;

import java.util.Date;

import org.quartz.CronScheduleBuilder;
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;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * This is a RAM Store Quartz!
 * @author dufy
 * @date 2017.02.04
 *
 */
public class RAMQuartz {

	private static Logger _log = LoggerFactory.getLogger(RAMQuartz.class);
	
	public static void main(String[] args) throws SchedulerException {
		//1.创建Scheduler的工厂
		SchedulerFactory sf = new StdSchedulerFactory();
		//2.从工厂中获取调度器实例
		Scheduler scheduler = sf.getScheduler();
		
		
		//3.创建JobDetail
		JobDetail jb = JobBuilder.newJob(RAMJob.class)
				.withDescription("this is a ram job") //job的描述
				.withIdentity("ramJob", "ramGroup") //job 的name和group
				.build();
		
		//任务运行的时间,SimpleSchedle类型触发器有效
		long time=  System.currentTimeMillis() + 3*1000L; //3秒后启动任务
		Date statTime = new Date(time);
		
		//4.创建Trigger
			//使用SimpleScheduleBuilder或者CronScheduleBuilder
		Trigger t = TriggerBuilder.newTrigger()
					.withDescription("")
					.withIdentity("ramTrigger", "ramTriggerGroup")
					//.withSchedule(SimpleScheduleBuilder.simpleSchedule())
					.startAt(statTime)  //默认当前时间启动
					.withSchedule(CronScheduleBuilder.cronSchedule("0/2 * * * * ?")) //两秒执行一次
					.build();
		
		//5.注册任务和定时器
		scheduler.scheduleJob(jb, t);
		
		//6.启动 调度器
		scheduler.start();
		_log.info("启动时间 : " + new Date());
			
	}
}

运行结果:
SimpleScheduleBuilder:

这里写图片描述

CronScheduleBuilder:

这里写图片描述

2.JDBC方式

使用jdbc方式,就要配置quartz.properties文件,并且在开始的时候在数据库中新增表!
我使用的数据库是mysql,数据库中表在quartz_demo里面有,需要的请在里面下载!
运行 tables_db2_v8.sql 这个文件。

#JDBC驱动
org.quartz.dataSource.qzDS.driver:com.mysql.jdbc.Driver
org.quartz.dataSource.qzDS.URL:jdbc:mysql://localhost:3306/quartz_test
org.quartz.dataSource.qzDS.user:root
org.quartz.dataSource.qzDS.password:root
org.quartz.dataSource.qzDS.maxConnection:10

(1)MyJob

package com.dufy.jdbctest;

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

import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class MyJob implements Job{
	private static final Logger log = LoggerFactory.getLogger(MyJob.class);

	@Override
	public void execute(JobExecutionContext context)throws JobExecutionException {
		log.info("MyJob  is start ..................");
		
		log.info("Hello quzrtz  "+
				new SimpleDateFormat("yyyy-MM-dd HH:mm:ss ").format(new Date()));
		
		log.info("MyJob  is end .....................");
	}
	
	

}

(2)QuartzJdbcTest

package com.dufy.jdbctest;

import java.text.ParseException;
import java.util.List;

import org.quartz.CronScheduleBuilder;
import org.quartz.CronTrigger;
import org.quartz.JobBuilder;
import org.quartz.JobDetail;
import org.quartz.JobKey;
import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.quartz.SchedulerFactory;
import org.quartz.SimpleScheduleBuilder;
import org.quartz.SimpleTrigger;
import org.quartz.Trigger;
import org.quartz.TriggerBuilder;
import org.quartz.TriggerKey;
import org.quartz.impl.StdSchedulerFactory;

public class QuartzJdbcTest {
	
	public static void main(String[] args) throws SchedulerException,
			ParseException {
		startSchedule();
		//resumeJob();
	}
	/**
	 * 开始一个simpleSchedule()调度
	 */
	public static void startSchedule() {
		try {
			// 1、创建一个JobDetail实例,指定Quartz
			JobDetail jobDetail = JobBuilder.newJob(MyJob.class)
			// 任务执行类
					.withIdentity("job1_1", "jGroup1")
					// 任务名,任务组
					.build();
		
			
			//触发器类型
			SimpleScheduleBuilder builder = SimpleScheduleBuilder
					// 设置执行次数
				    .repeatSecondlyForTotalCount(5);
			
			//CronScheduleBuilder builder = CronScheduleBuilder.cronSchedule("0/2 * * * * ?");
			// 2、创建Trigger
			Trigger trigger = TriggerBuilder.newTrigger()
					.withIdentity("trigger1_1", "tGroup1").startNow()
					.withSchedule(builder)
					.build();
			
			// 3、创建Scheduler
			Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();
			scheduler.start();
			// 4、调度执行
			scheduler.scheduleJob(jobDetail, trigger);
			try {
				Thread.sleep(60000);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}

			//关闭调度器
			scheduler.shutdown();

		} catch (SchedulerException e) {
			e.printStackTrace();
		}
	}

	/**
	 * 从数据库中找到已经存在的job,并重新开户调度
	 */
	public static void resumeJob() {
		try {

			SchedulerFactory schedulerFactory = new StdSchedulerFactory();
			Scheduler scheduler = schedulerFactory.getScheduler();
			JobKey jobKey = new JobKey("job1_1", "jGroup1");
			List<? extends Trigger> triggers = scheduler.getTriggersOfJob(jobKey);
			//SELECT TRIGGER_NAME, TRIGGER_GROUP FROM {0}TRIGGERS WHERE SCHED_NAME = {1} AND JOB_NAME = ? AND JOB_GROUP = ?
			// 重新恢复在jGroup1组中,名为job1_1的 job的触发器运行
			if(triggers.size() > 0){
				for (Trigger tg : triggers) {
					// 根据类型判断
					if ((tg instanceof CronTrigger) || (tg instanceof SimpleTrigger)) {
						// 恢复job运行
						scheduler.resumeJob(jobKey);
					}
				}
				scheduler.start();
			}
			
		} catch (Exception e) {
			e.printStackTrace();

		}
	}
}

运行结果:
这里写图片描述

控制台打印:
这里写图片描述

Cron和Simple类型,Simple类型的如果JobDetail没有设置.storeDurably(true),则job在运行完成之后会在数据库中删除!


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posted @ 2017-03-07 17:19  阿飞云漫步  阅读(1139)  评论(0编辑  收藏  举报