spring task 定时任务实现

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二、在web.xml中配置spring

<listener>    <description>Spring监听器</description>    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><context-param>    <param-name>contextConfigLocation</param-name>    <param-value>classpath:applicationContext.xml</param-value></context-param>

三、application配置监听器：

<?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: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-3.0.xsd    http://www.springframework.org/schema/context    http://www.springframework.org/schema/context/spring-context-3.0.xsd    http://www.springframework.org/schema/task    http://www.springframework.org/schema/task/spring-task-3.0.xsd"    default-lazy-init="false">    <!-- 注解方式 -->    <context:annotation-config />    <context:component-scan base-package="com.test.task" />    <task:annotation-driven/>        <!-- XML方式 -->    <!-- <bean name="testTask" class="com.test.task.TestTask" lazy-init="false"></bean>    <task:scheduled-tasks>           <task:scheduled ref="testTask" method="print" cron="0/5 * * * * ?"/>       </task:scheduled-tasks> --></beans>

四、实体类：

package com.test.task;import java.text.DateFormat;import java.util.Date;import org.springframework.scheduling.annotation.Scheduled;import org.springframework.stereotype.Component;@Componentpublic class TestTask {    @Scheduled(cron = "*/5 * * * * ?")    public void print(){        String time = DateFormat.getDateTimeInstance().format(new Date());        System.out.println("定时器触发打印"+time);    }}

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