学习地址：https://www.imooc.com/learn/846
官网：www.quartz-scheduler.org
特点：分布式+集群
设计模式：
工厂模式
builder模式
组件模式
链式写法
核心概念：调度器，任务，触发器
使用：
依赖：
<dependency>
<groupId>org.quartz-scheduler</groupId>
<artifactId>quartz</artifactId>
<version>2.2.3</version>
</dependency>
创建一个实例实现Job接口，实现其中的execute方法，将你要做的任务放到此方法
package quartz.job;
import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import javax.xml.crypto.Data;
import java.text.SimpleDateFormat;
import java.util.Date;
/**
* ClassName: HelloJob<br/>
* Description: <br/>
* date: 2019/1/22 11:19 AM<br/>
*
* @author chengluchao
* @since JDK 1.8
*/
public class HelloJob implements Job {
@Override
public void execute(JobExecutionContext jobExecutionContext) throws JobExecutionException {
Date date = new Date();
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
System.out.println("Current Exec Time Is:" + simpleDateFormat.format(date));
System.out.println("Hello word!");
}
}
编写调用类
package quartz.job;
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;
/**
* ClassName: HelloScheduler<br/>
* Description: <br/>
* date: 2019/1/22 11:23 AM<br/>
*
* @author chengluchao
* @since JDK 1.8
*/
public class HelloScheduler {
public static void main(String[] args) throws Exception {
//创建一个JobDetail实例，将HelloJob.class绑定
JobDetail jobDetail = JobBuilder
.newJob(HelloJob.class)
.withIdentity("myJob", "group1")
.build();
//创建一个Trigger实例，定义该job立即执行，并且每隔两秒钟重复执行一次，直到永远
Trigger trigger = TriggerBuilder
.newTrigger()
.withIdentity("myTrigger", "group1")
.startNow()//立即执行
.withSchedule(
SimpleScheduleBuilder
.simpleSchedule()
.withIntervalInSeconds(2)//两秒一次
.repeatForever())//直到永远
.build();
//创建Schduler实例
SchedulerFactory schedulerFactory = new StdSchedulerFactory();
Scheduler scheduler = schedulerFactory.getScheduler();
scheduler.start();
scheduler.scheduleJob(jobDetail, trigger);
}
}
14:56:17.296 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.simpl.PropertySettingJobFactory - Producing instance of Job 'group1.myJob', class="quartz".job.HelloJob
14:56:17.296 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.core.QuartzSchedulerThread - batch acquisition of 1 triggers
14:56:17.296 [DefaultQuartzScheduler_Worker-10] DEBUG org.quartz.core.JobRunShell - Calling execute on job group1.myJob
Current Exec Time Is:2019-01-22 14:56:17
Hello word!
14:56:19.295 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.simpl.PropertySettingJobFactory - Producing instance of Job 'group1.myJob', class="quartz".job.HelloJob
14:56:19.295 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.core.QuartzSchedulerThread - batch acquisition of 1 triggers
14:56:19.295 [DefaultQuartzScheduler_Worker-1] DEBUG org.quartz.core.JobRunShell - Calling execute on job group1.myJob
Current Exec Time Is:2019-01-22 14:56:19
Hello word!
14:56:21.296 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.simpl.PropertySettingJobFactory - Producing instance of Job 'group1.myJob', class="quartz".job.HelloJob
14:56:21.296 [DefaultQuartzScheduler_QuartzSchedulerThread] DEBUG org.quartz.core.QuartzSchedulerThread - batch acquisition of 1 triggers
14:56:21.296 [DefaultQuartzScheduler_Worker-2] DEBUG org.quartz.core.JobRunShell - Calling execute on job group1.myJob
Current Exec Time Is:2019-01-22 14:56:21
Hello word!
补充：
jobDetail的重要属性：
name
group 默认"DEFAULT"
jobClass
jobDataMap：
在任务调度的时候，jobDataMap可以进行存储一些信息；
打印jobDetail的信息
System.out.println("jobDetail's name : " + jobDetail.getKey().getName());
System.out.println("jobDetail's gruop : " + jobDetail.getKey().getGroup());
System.out.println("jobDetail's jobClass : " + jobDetail.getKey().getClass());jobDataMap的使用：
public class HelloScheduler {
public static void main(String[] args) throws Exception {
//创建一个JobDetail实例，将HelloJob.class绑定
JobDetail jobDetail = JobBuilder
.newJob(HelloJob.class)
.withIdentity("myJob")
.usingJobData("message","hello myJob1")
.usingJobData("floatJobvalue",3.14f)
.build();
//创建一个Trigger实例，定义该job立即执行，并且每隔两秒钟重复执行一次，直到永远
Trigger trigger = TriggerBuilder
.newTrigger()
.withIdentity("myTrigger", "group1")
.usingJobData("message","hello myTrigger1")
.usingJobData("doubleJobvalue",885.02)
.startNow()//立即执行
.withSchedule(
SimpleScheduleBuilder
.simpleSchedule()
.withIntervalInSeconds(2)//两秒一次
.repeatForever())//直到永远
.build();
//创建Schduler实例
SchedulerFactory schedulerFactory = new StdSchedulerFactory();
Scheduler scheduler = schedulerFactory.getScheduler();
scheduler.start();
scheduler.scheduleJob(jobDetail, trigger);
}
}public class HelloJob implements Job {
@Override
public void execute(JobExecutionContext jobExecutionContext) throws JobExecutionException {
Date date = new Date();
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
System.out.println("Current Exec Time Is:" + simpleDateFormat.format(date));
System.out.println("Hello word!");
JobKey key = jobExecutionContext.getJobDetail().getKey();
System.out.println("JobDetailKey : " + key.getName() + "JobDetailValue : " + key.getGroup());
TriggerKey triggerKey1 = jobExecutionContext.getTrigger().getKey();
System.out.println("triggerKey1 : " + triggerKey1.getName() + "triggervalue1 : " + triggerKey1.getGroup());
JobDataMap dataMap = jobExecutionContext.getJobDetail().getJobDataMap();
JobDataMap tdataMap = jobExecutionContext.getTrigger().getJobDataMap();
System.out.println(dataMap.get("message"));
System.out.println(tdataMap.get("message"));
JobDataMap dataMap2 = jobExecutionContext.getMergedJobDataMap();
//Trigger会覆盖JobDetail的信息
System.out.println(dataMap2.get("message"));
System.out.println(dataMap2.get("message"));
}获取jobDataMap的值的方式2：
在HelloJob类中定义属性，属性名和map中的key一样，加上get/set方法
在HelloJob的类中就可以直接使用
Trigger的方法：
.startAt(date)//首次执行的时间
.endAt(endDate)//最后一次执行的时间
.startNow()//立即执行
