spring定時任務輪詢(spring Task)

定時任務輪詢比如任務自服務器啟動就開始運行，並且每隔5秒執行一次。

以下用spring注解配置定時任務。
1、添加相應的schema

xmlns:task="
xsi:schemaLocation="
    http://www.springframework.org/schema/task 
    http://www.springframework.org/schema/task/spring-task-3.0.xsd"

　　

完整schema如下：

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
	xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	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/context  
      http://www.springframework.org/schema/context/spring-context.xsd  
      http://www.springframework.org/schema/mvc  
      http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
      http://www.springframework.org/schema/task          
	  http://www.springframework.org/schema/task/spring-task-3.0.xsd">
</beans>

　　

2、配置自動調度的包和定時開關

<!-- 注解掃描包 -->
<context:component-scan base-package="com.ljq.web.controller.annotation" />
<!-- Enables the Spring Task @Scheduled programming model --> 
<task:executor id="executor" pool-size="5" /> 
<task:scheduler id="scheduler" pool-size="10" /> 
<task:annotation-driven executor="executor" scheduler="scheduler" />

　　

3、添加調度測試類

package com.ljq.web.controller.annotation;

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

/**
 * 調度測試類(每隔5秒執行一次)
 * 
 * @author Administrator
 *
 */
@Service
public class TaskTest {
	@Scheduled(cron = "0/5 * * * * ? ")
	public void myTestWork() {
		System.out.println(System.currentTimeMillis());
	}
}

　　

備注：cron = "0/5 * * * * ? "從左到右依次是：秒、分、小時、日、月、周、年