上一篇文章写了一个在配置文件中设置时间的定时器，现在来写一个注解方式的定时器：
1.工程结构如下：
2.需要执行的代码块：
1 package com.Task; 2 3 import org.springframework.scheduling.annotation.Scheduled; 4 import org.springframework.stereotype.Component; 5 6 @Component 7 public class TaskDemo { 8 private static int sf = 0; 9 10 @Scheduled(cron = "0/5 * * * * ?") 11 public void testTask(){ 12 sf++; 13 System.out.println("5秒输出一次。。。。。sf:"+sf); 14 } 15 }
注意：不要忘记@Component，否则配置文件扫描不到需要执行的代码块；
3.
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" 4 xmlns:tx="http://www.springframework.org/schema/tx" xmlns:task="http://www.springframework.org/schema/task" 5 xmlns:aop="http://www.springframework.org/schema/aop" 6 xsi:schemaLocation="http://www.springframework.org/schema/beans 7 http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 8 http://www.springframework.org/schema/context 9 http://www.springframework.org/schema/context/spring-context-3.0.xsd 10 http://www.springframework.org/schema/tx 11 http://www.springframework.org/schema/tx/spring-tx-3.0.xsd 12 http://www.springframework.org/schema/task 13 http://www.springframework.org/schema/task/spring-task-3.0.xsd 14 http://www.springframework.org/schema/aop 15 http://www.springframework.org/schema/aop/spring-aop-3.0.xsd"> 16 17 <context:component-scan base-package="com"/> 18 19 <task:annotation-driven/> 20 21 </beans>
说明：相对于上一遍的配置文件的设置时间方式，这种方式就简单多了，
如果启动过程中报：The prefix "task" for element "task:annotation-driven" is not bound.错误，
则需要在beans中加：
xmlns:task="http://www.springframework.org/schema/task"
xmlns:aop="http://www.springframework.org/schema/aop"
4.web.xml配置文件：
1 <?xml version="1.0" encoding="UTF-8"?> 2 <web-app version="2.5" 3 xmlns="http://java.sun.com/xml/ns/javaee" 4 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 5 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 6 http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> 7 <display-name></display-name> 8 <welcome-file-list> 9 <welcome-file>index.jsp</welcome-file> 10 </welcome-file-list> 11 12 <servlet> 13 <servlet-name>dispatcherServlet</servlet-name> 14 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 15 <init-param> 16 <param-name>contextConfigLocation</param-name> 17 <param-value> 18 classpath:conf/spring-task.xml 19 </param-value> 20 </init-param> 21 <load-on-startup>1</load-on-startup> 22 </servlet> 23 </web-app>
web.xml配置的信息目的就是让spring-task.xml文件生效；
5.相关jar包：http://pan.baidu.com/s/1qYwCrBQ
6.部署到tomcat上启动即可；
注解时间设置和上一篇文章一样；