spring3使用task:annotation-driven开始定时

先看一个案例

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
　　/*
        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
    @Scheduled(cron="0 * * * * *")     //第二种方式

    
    public void singing(){
        Date date=new Date();
        SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");
        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
">
    <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");
    }
}