spring 定时任务（一）

最新推荐文章于 2024-08-26 15:49:10 发布

magic_zz

最新推荐文章于 2024-08-26 15:49:10 发布

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分类专栏： spring

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本文介绍如何使用Spring和Quartz实现定时任务。包括所需jar包、业务类编写、配置文件详解及实例演示。通过Cron表达式设定不同执行频率。

一、前期准备

spring.jar,quartz.jar,commons-logging-1.0.4.jar

二、具体步骤

1、编写业务类,该类继承了org.quartz.Job,主要的逻辑在execute方法中编写

2、配置spring的applicationContext-timetask.xml文件
2.1配置任务JobDetailBean
2.2配置触发器CronTriggerBean

2.3配置调度器 SchedulerFactoryBean

三、实例
1、web.xml
<?xml version="1.0"encoding="UTF-8"?>
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<display-name></display-name>


<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext-*.xml</param-value>
</context-param>


<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
</web-app>

2、TimeTask.java、TimeTask2.java
public class TimeTask implements org.quartz.Job{
public voidperform(){
       //业务逻辑
     System.out.println("定时任务1开始执行----现在的时间是--"+newDate());
    }
@Override
public void execute(JobExecutionContext arg0)throws JobExecutionException {
// TODO Auto-generated method stub
perform();
}
}

public class TimeTask2 implements org.quartz.Job{
public voidperform(){
       //业务逻辑
     System.out.println("定时任务2开始执行----现在的时间是--"+newDate());
    }
@Override
public void execute(JobExecutionContext arg0)throws JobExecutionException {
// TODO Auto-generated method stub
perform();
}
}

3、applicationContext-timetask.xml
<?xml version="1.0"encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN""http://www.springframework.org/dtd/spring-beans.dtd">

<beans>
   <bean name="task1"
       class="org.springframework.scheduling.quartz.JobDetailBean">
       <property name="jobClass"value="com.base.timetask.TimeTask"/>
   </bean>
   <bean name="task2"
       class="org.springframework.scheduling.quartz.JobDetailBean">
       <property name="jobClass"value="com.base.timetask.TimeTask2"/>
   </bean>
   
   <bean id="cronTrigger1"
       class="org.springframework.scheduling.quartz.CronTriggerBean">
       
       <property name="jobDetail" ref="task1"/>
       
       <property name="cronExpression" value="0 */1 * * *?" />
   </bean>
    <bean id="cronTrigger2"
       class="org.springframework.scheduling.quartz.CronTriggerBean">
       
       <property name="jobDetail" ref="task2"/>
       
       <property name="cronExpression" value="59 59 23 ? *SUN" />
   </bean>
   
   <bean
       class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
       <propertyname="triggers">
           <list>
               
               <ref bean="cronTrigger1"/>
               <ref bean="cronTrigger2"/>
           </list>
       </property>
   </bean>
</beans>