spring3使用task注记及task:annotation-driven解决定时问题

定义一个定时操作
     package com.jCuckoo.demo; 
    import java.text.SimpleDateFormat; 
    import java.util.Date; 
    import org.springframework.scheduling.annotation.Scheduled; 
     
    public class Singer { 
         
         
        //@Scheduled(fixedDelay=1000)  //第一种方式 
        //fixedDelay延时多少毫秒，多少毫秒执行一次 
        @Scheduled(cron="0 * * * * *")     //第二种方式 
     
        /*
            1 Seconds (0-59)
            2 Minutes (0-59)
            3 Hours (0-23)
            4 Day of month (1-31)
            5 Month (1-12 or JAN-DEC)
            6 Day of week (1-7 or SUN-SAT)
            7 Year (1970-2099)
            取值：可以是单个值，如6；
                也可以是个范围，如9-12；
                也可以是个列表，如9,11,13
                也可以是任意取值，使用*
        */ 
        //0 * * * * * 代表每分钟执行一次 
        /*
            2011-09-07 09:23:00
            2011-09-07 09:24:00
            2011-09-07 09:25:00
            2011-09-07 09:26:00
         */ 
        public void singing(){ 
            Date date=new Date(); 
            SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd hh:mm:ss"); 
            System.out.println(sdf.format(date)); 
        } 
    } 

spring配置文件如下：
       <?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:aop="http://www.springframework.org/schema/aop" 
        xmlns:tx="http://www.springframework.org/schema/tx"  
        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/tx 
    http://www.springframework.org/schema/tx/spring-tx-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 
    "> 
        <bean id="singer" class="com.jCuckoo.demo.Singer"/> 
        <task:annotation-driven /> 
    </beans> 


测试类
       package com.jCuckoo.demo; 
    import org.springframework.context.ApplicationContext; 
    import org.springframework.context.support.ClassPathXmlApplicationContext; 
    public class MainTest { 
        public static void main(String[] args) { 
            ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext.xml"); 
            Singer singer=(Singer) context.getBean("singer"); 
        } 
    } 

结果：

2011-09-07 09:23:00
2011-09-07 09:24:00
2011-09-07 09:25:00
2011-09-07 09:26:00