Java日钟demo

spring-context.xml部分配置，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:mvc="http://www.springframework.org/schema/mvc"
	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-4.2.xsd
		http://www.springframework.org/schema/mvc 
		http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd	
		http://www.springframework.org/schema/context 
		http://www.springframework.org/schema/context/spring-context-4.2.xsd
		http://www.springframework.org/schema/task
		http://www.springframework.org/schema/task/spring-task-4.2.xsd">
	<bean
		class="org.springframework.validation.beanvalidation.MethodValidationPostProcessor" />
	<mvc:default-servlet-handler />

	<context:component-scan base-package="com.rz.*"></context:component-scan>

	<!-- 启用注解驱动的定时任务 -->
	<task:annotation-driven scheduler="myScheduler" />
	<!-- 配置线程池，若不配置多任务下会有问题 -->
	<task:scheduler id="myScheduler" pool-size="10" />

	<mvc:annotation-driven />
	//... ...
        //... ... 
</beans>

定时任务A：

package com.rz.task;

import java.util.Date;

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

@Component("aTask")
public class ATask {
	@Scheduled(cron = "0/10 * *  * * ? ") // 每10秒执行一次
	public void aTask() {
		System.out.println("");
		System.out.println(new Date() + "*********A任务每10秒执行一次进入测试");
	}
}

定时任务B：

package com.rz.task;

import java.util.Date;

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

@Component("bTask")
public class BTask {
	@Scheduled(cron = "0/5 * *  * * ? ") // 每5秒执行一次
	public void bTask() {
		System.out.println(new Date() + "*********B任务每5秒执行一次进入测试");
	}
}

定时任务执行时间可依照：http://cron.qqe2.com 进行生成。