springMVC中实现定时器可在Controller中配置定时器

本章讲解springMVC中实现定时器，此时基于上一章eclipse搭建springmvc项目框架

文件结构

定时器所需jar

aopalliance-1.0.jar

步骤

1、springMVC-servlet.xml

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:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc" 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-3.0.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">

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


    <mvc:annotation-driven />


    <bean id="viewResolver"
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/" />
        <property name="suffix" value=".jsp" />
    bean>

    <task:executor id="executor" pool-size="5" />
    <task:scheduler id="schedule" pool-size="10" />
    <task:annotation-driven executor="executor"
    scheduler="schedule" />

beans>

注：添加了task

2、VendorTask.java

package net.csdn.blog.springmvc.timer;

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

@Component
public class VendorTask {

    // private static Logger log = Logger.getLogger(VendorTask.class);

    @Scheduled(fixedDelay = 5000)
    public void doSomethingWithDelay() {
        System.out.println("I'm doing with delay now!");
    }

    @Scheduled(fixedRate = 5000)
    public void doSomethingWithRate() {
        System.out.println("I'm doing with rate now!");
    }

    @Scheduled(cron = "0/5 * * ? * *")
    public void doSomethingWithCron() {
        System.out.println("I'm doing with cron now!");
    }

}

注：cron效果为服务器启动之后每过5s钟执行一次，具体的写法可参考Spring定时器配置方式

3、效果

-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

@Component
@Controller
@RequestMapping(value="/serverinfo")
public class ServerInfoController extends BaseController implements ServletContextListener{

   @Scheduled(fixedDelay = 50000)  
    public void doSomethingWithDelay()  {

   

}

}