Spring3中加强了注解的使用,其中计划任务也得到了增强,现在创建一个计划任务只需要两步就完成了:
- 创建一个Java类,添加一个无参无返回值的方法,在方法上用@Scheduled注解修饰一下;
- 在Spring配置文件中添加三个<task:**** />节点;
最后说明一下,第一步创建的Java类要成为spring可管理的Bean,可以直接写在XML里,也可以@Component一下
示例如下
计划任务类:
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/**
* com.zywang.spring.task.SpringTaskDemo.java
* @author ZYWANG 2011-3-9
*/
package com.zywang.spring.task;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;
/**
* Spring3 @Scheduled 演示
* @author ZYWANG 2011-3-9
*/
@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!" );
}
}
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Spring配置文件:
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<? 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:task = "http://www.springframework.org/schema/task"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.0.xsd">
<!-- Enables the Spring Task @Scheduled programming model -->
< task:executor id = "executor" pool-size = "5" />
< task:scheduler id = "scheduler" pool-size = "10" />
< task:annotation-driven executor = "executor" scheduler = "scheduler" />
</ beans >
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以上内容基于Spring 3.0.5 版本运行,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:http://blog.csdn.net/zoucui/article/details/68490590