quartz极速入门

极速入门"/>

quartz极速入门

入门demo

HelloSchedule .java

import java.text.SimpleDateFormat;
import java.util.Date;import org.quartz.*;
import org.quartz.impl.StdSchedulerFactory;public class HelloSchedule {public  static void main(String[] args) throws SchedulerException{//创建一个jobdetail 实例，通过该实例与HelloHob.class绑定JobDetail jobDetail = JobBuilder.newJob(HelloJob.class).withIdentity("myJob").build();//        System.out.println("JobDetail'name: " + jobDetail.getKey().getName());
//        System.out.println("JobDetail'group: " + jobDetail.getKey().getGroup());
//        System.out.println("JobDetail'class: " + jobDetail.getKey().getClass());//创建trigger实例，定义该job立即执行，并且每隔两秒执行一次知道永远Trigger trigger = TriggerBuilder.newTrigger().withIdentity("myTrigger","group1").startNow().withSchedule(SimpleScheduleBuilder.simpleSchedule().withIntervalInSeconds(2).repeatForever()).build();//创建schedule实例SchedulerFactory sfact = new StdSchedulerFactory();Scheduler scheduler = sfact.getScheduler();scheduler.start();//通过绑定job 和 trigger 来执行 。Date date = new Date();SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");System.out.println("Current Time Is : " + sf.format(date));scheduler.scheduleJob(jobDetail,trigger);}
}

HelloJob .java

import org.quartz.*;import java.text.SimpleDateFormat;
import java.util.Date;public class HelloJob implements Job {public void execute(JobExecutionContext arg0) throws  JobExecutionException{// 打印当前的时间，格式为2017-01-01 00:00:00Date date = new Date();SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");System.out.println("Current Exec Time Is : " + sf.format(date));//编写具体的业务逻辑System.out.println("HelloWorld");}
}

简介：

简单而言，我们创建一个myjob类，继承JOB接口，然后其中的excute方法就是未来定时执行的方法。
然后我们在main函数里面需要做的事情是：
1、通过Jobdetail方法绑定myjob。
2、trigger就是定时器，即指定执行间隔时间
3、schedule绑定对应的jobdetail和trigger去执行！
那综上不难得知，一个完整的quartz包含四个部分。job，jobdetail，trigger，scheduler

详细介绍：

上面我们已经将完整quartz的流程介绍了，那么接下来我们针对其中的方法进行介绍

• simplejobdetail

只能绑定job方法

• complexjobdetail

在绑定了指定job方法后，还可以传入参数

• simpletrigger

指定简单的定时规则

• crontrigger

可以指定复杂的定时规则

quartz整合Spring的job定时器

其中涉及的三个类

AnotherBean.java

package com.hejie.springquartz.quartz;import org.springframework.stereotype.Component;@Component("anotherBean")
public class AnotherBean {public void printAnotherMessage() {System.out.println("AnotherMessage");}
}

MyBean .java

package com.hejie.springquartz.quartz;import java.text.SimpleDateFormat;
import java.util.Date;import org.springframework.stereotype.Component;@Component("myBean")
public class MyBean {public void printMessage() {// 打印当前的执行时间，格式为2017-01-01 00:00:00Date date = new Date();SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");System.out.println("MyBean Executes!" + sf.format(date));}
}

FirstScheduledJob .java

package com.hejie.springquartz.quartz;import java.text.SimpleDateFormat;
import java.util.Date;import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.scheduling.quartz.QuartzJobBean;public class FirstScheduledJob extends QuartzJobBean{private AnotherBean anotherBean;public void setAnotherBean(AnotherBean anotherBean){this.anotherBean = anotherBean;}@Overrideprotected void executeInternal(JobExecutionContext arg0)throws JobExecutionException {Date date = new Date();SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");System.out.println("FirstScheduledJob Executes!" + sf.format(date));this.anotherBean.printAnotherMessage();		}
}

dispatch-servlet.xml配置

<!-- 简单的jobdetail配置， 不能传入参数--><bean id="simpleJobDetail"class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean"><property name="targetObject" ref="myBean" /><property name="targetMethod" value="printMessage" /></bean><!--高级的 jobdetaile 可以传入参数 --><bean id="firstComplexJobDetail"class="org.springframework.scheduling.quartz.JobDetailFactoryBean"><property name="jobClass"value="com.hejie.springquartz.quartz.FirstScheduledJob" /><property name="jobDataMap"><map><entry key="anotherBean" value-ref="anotherBean" /></map></property><!-- 触发器--><property name="Durability" value="true"/></bean><!--&lt;!&ndash; 距离当前时间1秒之后执行，之后每隔两秒钟执行一次 &ndash;&gt;--><bean id="mySimpleTrigger"class="org.springframework.scheduling.quartz.SimpleTriggerFactoryBean"><property name="jobDetail"  ref="simpleJobDetail"/><property name="startDelay"  value="1000"/><property name="repeatInterval"  value="2000"/></bean><!--&lt;!&ndash; 每隔5秒钟执行一次 &ndash;&gt;--><bean id="myCronTrigger"class="org.springframework.scheduling.quartz.CronTriggerFactoryBean"><property name="jobDetail"  ref="firstComplexJobDetail"/><property name="cronExpression"  value="0/5 * * ? * *"/></bean><bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean"><property name="jobDetails"><list><ref bean="simpleJobDetail"/><ref bean="firstComplexJobDetail"/></list></property><property name="triggers"><list><ref bean="mySimpleTrigger"/><ref bean="myCronTrigger"/></list></property></bean>

xml文件对应的注释：