spirng 支持的三种定时器学习笔记

本文介绍了一个使用Spring框架进行定时任务配置的例子,包括基于JDK Timer的任务、Quartz Job任务及业务对象方法调用的定时执行配置。

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以下是三个定时器的类

package com.spring.test;

import java.util.TimerTask;

public class ExamplesTimer extends TimerTask{
@Override
public void run() {
System.out.println("run......");
}
}



package com.spring.test;

import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.scheduling.quartz.QuartzJobBean;

public class ExamplesJob extends QuartzJobBean {
private int timeout ;

public void setTimeout(int timeout) {
this.timeout = timeout;
}

@Override
protected void executeInternal(JobExecutionContext arg0)
throws JobExecutionException {
System.out.println("ExamplesJob.....");
}
}



package com.spring.test;

public class ExampleBusinessObjec {
public void doIt() {
System.out.println("ExampleBusinessObjec...");
}
}



以下是 application.xml


<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd ">
<!--
第一种 JDK Timer
<bean id="examplesTimer" class="com.spring.test.ExamplesTimer" />

<bean id="scheduledTask"
class="org.springframework.scheduling.timer.ScheduledTimerTask">
<property name="delay" value="5000" />
<property name="period" value="1000" />
<property name="timerTask" ref="examplesTimer" />
</bean>

<bean id="timerFactory"
class="org.springframework.scheduling.timer.TimerFactoryBean">
<property name="scheduledTimerTasks">
<list>
<ref bean="scheduledTask" />
</list>
</property>
</bean>
-->
<!-- 以下是第2、3 种订时器的配置 -->
<bean name="exampleJob" class="org.springframework.scheduling.quartz.JobDetailBean">
<property name="jobClass" value="com.spring.test.ExamplesJob" />
<property name="jobDataAsMap">
<map>
<entry key="timeout" value="5" />
</map>
</property>
</bean>
<bean id="exampleBusinessObject" class="com.spring.test.ExampleBusinessObjec" />

<bean id="jobDetail"
class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
<property name="targetObject" ref="exampleBusinessObject" />
<property name="targetMethod" value="doIt" />
<property name="concurrent" value="false" />
</bean>

<bean id="simpleTrigger"
class="org.springframework.scheduling.quartz.SimpleTriggerBean">
<property name="jobDetail" ref="jobDetail" />
<property name="startDelay" value="5000" />
<property name="repeatInterval" value="1000" />
</bean>

<bean id="cronTrigger"
class="org.springframework.scheduling.quartz.CronTriggerBean">
<property name="jobDetail" ref="exampleJob" />
<!-- run every morning at 6 AM -->
<property name="cronExpression" value="0 0 6 * * ?" />
</bean>
<bean
class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<property name="triggers">
<list>
<ref bean="cronTrigger" />
<ref bean="simpleTrigger" />
</list>
</property>
</bean>

</beans>


官方资料:http://ajava.org/online/spring2.5/html/scheduling.html
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