SpringMVC定时器使用
jopen
10年前
1、spring的配置文件
<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:task="http://www.springframework.org/schema/task" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.0.xsd"> <task:annotation-driven /> <!-- 定时器开关--> <bean id="myTaskXml" class="com.spring.task.MyTaskXml"></bean> <task:scheduled-tasks> <!-- 这里表示的是每隔五秒执行一次 --> <task:scheduled ref="myTaskXml" method="show" cron="*/5 * * * * ?" /> <task:scheduled ref="myTaskXml" method="print" cron="*/10 * * * * ?"/> </task:scheduled-tasks> <!-- 自动扫描的包名 --> <context:component-scan base-package="com.spring.task" /> </beans>
2、基于xml的定时器任务
package com.spring.task; /** * 基于xml的定时器 * @author hj */ public class MyTaskXml { public void show(){ System.out.println("XMl:is show run"); } public void print(){ System.out.println("XMl:print run"); } } 3、基于注解的定时器任务
package com.spring.task; import org.springframework.scheduling.annotation.Scheduled; import org.springframework.stereotype.Component; /** * 基于注解的定时器 * @author hj */ @Component public class MyTaskAnnotation { /** * 定时计算。每天凌晨 01:00 执行一次 */ @Scheduled(cron = "0 0 1 * * *") public void show(){ System.out.println("Annotation：is show run"); } /** * 心跳更新。启动时执行一次，之后每隔2秒执行一次 */ @Scheduled(fixedRate = 1000*2) public void print(){ System.out.println("Annotation：print run"); } } 4、测试
package com.spring.test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class Main { public static void main(String[] args) { ApplicationContext ctx = new ClassPathXmlApplicationContext("spring-mvc.xml"); } }