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簡單的使用java Timer調(diào)度任務(wù)
首先寫一個定時(shí)器任務(wù)類

package com.myspring.quartz;
import java.util.TimerTask;
public class MyTimeTask extends TimerTask {
@Override
public void run() {
// TODO Auto-generated method stub
System.out.println("hello");
}
}

spring配置文件

<?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:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
<bean id="timeTask" class="com.myspring.quartz.MyTimeTask"></bean>
<bean id="myTimeTask" class="org.springframework.scheduling.timer.ScheduledTimerTask">
<property name="timerTask" ref="timeTask"></property>
<!-- 指定任務(wù)運(yùn)行周期,單位毫秒 -->
<property name="period" value="1000"></property>
<!-- 指定任務(wù)延時(shí)時(shí)間,即第一次運(yùn)行之前等待時(shí)間,單位毫秒 -->
<property name="delay" value="1000"></property>
</bean>
<bean class="org.springframework.scheduling.timer.TimerFactoryBean">
<property name="scheduledTimerTasks">
<list>
<ref bean="myTimeTask"/>
</list>
</property>
</bean>
</beans>

局限性:Java Timer無法精確指定何時(shí)運(yùn)行
使用Quartz調(diào)度器
同Java Timer一樣首先創(chuàng)建一個任務(wù)類MyQuartzJob.java

package com.myspring.quartz;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.scheduling.quartz.*;
public class MyQuartzJob extends QuartzJobBean{
@Override
protected void executeInternal(JobExecutionContext arg0)
throws JobExecutionException {
// TODO Auto-generated method stub
System.out.println("方法調(diào)用");
}
}

添加spring配置

<bean id="quartzJob" class="org.springframework.scheduling.quartz.JobDetailBean">
<property name="jobClass" value="com.myspring.quartz.MyQuartzJob"></property>
<!-- 接受一個Map,其中包含了需要設(shè)置給jobClass的各種屬性 -->
<property name="jobDataAsMap">
<map></map>
</property>
</bean>
<bean id="simplerTrigger" class="org.springframework.scheduling.quartz.SimpleTriggerBean">
<property name="jobDetail" ref="quartzJob"></property>
<!-- 設(shè)置延遲工作的第一次執(zhí)行,單位毫秒 -->
<property name="startDelay" value="1000"></property>
<!-- 設(shè)置調(diào)度任務(wù)頻度,單位毫秒 -->
<property name="repeatInterval" value="1000"></property>
</bean>

為了精確的控制調(diào)度工作,Quartz提供了cron工作
調(diào)度一個cron工作
例如,要在每天晚上11:59運(yùn)行任務(wù)
可以如下配置spring配置

<bean id="cronTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean">
<property name="jobDetail" ref="quartzJob"></property>
<property name="cronExpression" value="0 59 23 * * ?"></property></bean>

我的主管寫的cronExpression配置說明
最后啟動工作,添加spring配置

<bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<!-- 接受一組觸發(fā)器,可以接受一個列表 -->
<property name="triggers">
<list>
<ref bean="simplerTrigger"/>
<ref bean="cronTrigger"/>
</list>
</property>
</bean>

使用org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean類,直接調(diào)度任務(wù),而不用繼承QuartzJobBean
首先編寫一個簡單任務(wù)類MyQuartz.java

package com.myspring.quartz;
public class MyQuartz {
public void hello(){
System.out.println("hello");
}
}

然后添加spring配置

<bean id="myQuartz" class="com.myspring.quartz.MyQuartz"></bean>
<bean id="newJob" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
<property name="targetObject" ref="myQuartz"></property>
<property name="targetMethod" value="hello"></property>
</bean>

最后同理添加spring配置