在Spring3中使用注解(@Scheduled)创建计划任务源码

web.xml配置：

<?xml version="1.0" encoding="UTF-8"?>

<web-app version="3.0"

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_3_0.xsd">
<display-name></display-name>

<welcome-file-list>

<welcome-file>index.jsp</welcome-file>

</welcome-file-list>

<context-param>

<param-name>contextConfigLocation</param-name>

<param-value> /WEB-INF/classes/applicationContext.xml</param-value>

</context-param>

<listener>

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

</listener>

</web-app>

applicationContext.xml配置：

<?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"

xmlns:context="http://www.springframework.org/schema/context"

xmlns:task="http://www.springframework.org/schema/task"

xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.0.xsd"

>

<context:component-scan base-package="com.zywang.spring.task" />

<task:executor id="executor" pool-size="5" />

<task:scheduler id="scheduler" pool-size="10" />

<task:annotation-driven executor="executor" scheduler="scheduler" />

</beans>

java代码：

package com.zywang.spring.task;

import org.springframework.scheduling.annotation.Scheduled;

import org.springframework.stereotype.Component;

import org.springframework.stereotype.Service;

@Component

public class SpringTaskDemo {

@Scheduled(fixedDelay = 5000)

void doSomethingWithDelay() {

System.out.println("I'm doing with delay now!");

}

@Scheduled(fixedRate = 5000)

void doSomethingWithRate(){

System.out.println("I'm doing with rate now!");

}

@Scheduled(cron = "0/5 * * * * *")

void doSomethingWith(){

System.out.println("I'm doing with cron now!");

}

}