Spring教程_Spring定时任务_@Scheduled使用

雨点打透心脏的1/2处 2022-06-07 04:50 180阅读 0赞

//系统结构图

![Center][]

//配置文件

<?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:aop="http://www.springframework.org/schema/aop"
    	xmlns:context="http://www.springframework.org/schema/context"
    	xmlns:mvc="http://www.springframework.org/schema/mvc"
    	xmlns:tx="http://www.springframework.org/schema/tx"
    	xmlns:c="http://www.springframework.org/schema/c"
    	xmlns:task="http://www.springframework.org/schema/task"
    	xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
    		http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
    		http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.1.xsd
    		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
    		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
    		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">
    	
    	
    	<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    		<property name="locations">
    			<list>
    				<value>classpath:jdbc.properties</value>
    			</list>
    		</property>
    	</bean>  
    	
    	<context:annotation-config />
    	<context:component-scan base-package="com"></context:component-scan>
    	
    	<mvc:annotation-driven />
    	
    	
    	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
    		<property name="driverClassName" value="${jdbc.driverClassName}" />
    		<property name="url" value="${jdbc.url}" />
    		<property name="username" value="${jdbc.username}" />
    		<property name="password" value="${jdbc.password}" />
    	</bean>
    
    	
    	<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    		<property name="dataSource" ref="dataSource" />
    	</bean>
    	
    	 <task:annotation-driven />
    
    
    </beans>

<?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
      <display-name>springmvc</display-name>
      <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
      </welcome-file-list>
      <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
      </listener>
      <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring-context.xml</param-value>
      </context-param>
      <servlet>
        <servlet-name>DispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
          <param-name>contextConfigLocation</param-name>
          <param-value>classpath:spring-servlet.xml</param-value>
        </init-param>
      </servlet>
      <servlet-mapping>
        <servlet-name>DispatcherServlet</servlet-name>
        <url-pattern>*.do</url-pattern>
      </servlet-mapping>
    </web-app>

package com.spring.job.test;
    
    import java.util.Date;
    
    import org.springframework.scheduling.annotation.Scheduled;
    import org.springframework.stereotype.Component;
    
    @Component
    public class StudentJob {
    	
    	//统计打卡上班人数
    	@Scheduled(cron="0 30 0,8 * * ? ")
    	public void tjStudetnInHome(){
    		System.out.println("统计打卡上班的人数....");
    	}
    	
    	//统计昨天迟到的人数
    	@Scheduled(cron="0 0 1 * * *")
    	public void tjLaterWork(){
    		System.out.println("统计昨天迟到人数");
    	}
    	
    	//每隔2秒更一下系统时间_启动的时候执行一次
        @Scheduled(fixedRate = 2*1000)   
        public void tjUpdateDate(){  
            System.out.println("更新系统时间"+new Date());  
        }  
    }

//运行结果

![Center 1][]  
  
//源码地址 http://pan.baidu.com/s/1jI8BfKE

[Center]: /images/20220607/2f42ae7667ff49229de5e3beba89d3a4.png
[Center 1]: /images/20220607/6c8ab78867e141289d20e51ee6c98949.png