spring定时器

1、ApplicationContext.xml配置

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:aop="http://www.springframework.org/schema/aop" 
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:jaxws="http://cxf.apache.org/jaxws" 
    xmlns:jaxrs="http://cxf.apache.org/jaxrs"
    **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/aop 
                        http://www.springframework.org/schema/aop/spring-aop.xsd
                        http://www.springframework.org/schema/context 
                        http://www.springframework.org/schema/context/spring-context.xsd
                        http://www.springframework.org/schema/tx 
                        http://www.springframework.org/schema/tx/spring-tx.xsd
                        http://cxf.apache.org/jaxws http://cxf.apache.org/schemas/jaxws.xsd
                        http://cxf.apache.org/jaxrs http://cxf.apache.org/schemas/jaxrs.xsd
                        http://www.springframework.org/schema/task 
                        http://www.springframework.org/schema/task/spring-task-3.1.xsd">

    <import resource="classpath:META-INF/cxf/cxf.xml"/>
    
    <context:annotation-config />

    <context:component-scan base-package="com.tzwy">
        <context:exclude-filter type="annotation"
            expression="org.springframework.stereotype.Controller" />
    context:component-scan>

    ......省略其它配置......


    
    <task:annotation-driven/>
    <bean class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor" />


beans>

2、定时任务执行类

package com.tzwy.util.timer;

import javax.annotation.Resource;

import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

import com.tzwy.dao.DaoSupport;

@Component
public class DataBaseTimer
{
    /**
     * 调用DAO的公共接口
     */
    @Resource(name = "daoSupport")
    private DaoSupport dao;

    /**
     * 定时更新统计表的数据
     * cron:秒  分  时  天
     * @throws Exception 
     */
    //@Scheduled(cron = "0 0 1 * * ?")  //每天夜里一点执行
    @Scheduled(cron = "0/5 * * * * ?") //每五秒执行一次
    public void updateStatistics() throws Exception
    {
        System.out.println("timer");

    }
}