xml  配置

	xmlns:task="http://www.springframework.org/schema/task"

   http://www.springframework.org/schema/task
        http://www.springframework.org/schema/task/spring-task-3.1.xsd

<task:annotation-driven />

代码配置

import java.text.SimpleDateFormat;

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


@Component
public class Scheduling {

	private static final SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm:ss");



	public Scheduling(){
		System.out.println(dateFormat);
	}

	//@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
	//•"0 0 * * * *" = the top of every hour of every day.
	//•"*/10 * * * * *" = every ten seconds.
	//•"0 0 8-10 * * *" = 8, 9 and 10 o'clock of every day.
	//•"0 0/30 8-10 * * *" = 8:00, 8:30, 9:00, 9:30 and 10 o'clock every day.
	//•"0 0 9-17 * * MON-FRI" = on the hour nine-to-five weekdays
	//•"0 0 0 25 12 ?" = every Christmas Day at midnight


	@Scheduled(fixedDelay=1000)
	public void SendToUser(){
		System.out.println("给用户发送信息");
	}





}