Spring3中加強(qiáng)了注解的使用,其中計劃任務(wù)也得到了增強(qiáng),現(xiàn)在創(chuàng)建一個計劃任務(wù)只需要兩步就完成了:
- 創(chuàng)建一個Java類,添加一個無參無返回值的方法,在方法上用@Scheduled注解修飾一下;
- 在Spring配置文件中添加三個<task:**** />節(jié)點;
最后說明一下,第一步創(chuàng)建的Java類要成為spring可管理的Bean,可以直接寫在XML里,也可以@Component一下
示例如下
計劃任務(wù)類:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
/** * 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!" ); } } |
Spring配置文件:
1
2
3
4
5
6
7
8
9
10
|
<? 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 > |
以上內(nèi)容基于Spring 3.0.5 版本運(yùn)行,希望對大家的學(xué)習(xí)有所幫助,也希望大家多多支持服務(wù)器之家。
原文鏈接:http://blog.csdn.net/zoucui/article/details/68490590