spring task 定时任务实现

朱雀 2021-05-12 11:54 506阅读 0赞

![Center][]

二、在web.xml中配置spring

<listener>
        <description>Spring监听器</description>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>

三、application配置监听器：

<?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: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-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/task
        http://www.springframework.org/schema/task/spring-task-3.0.xsd"
        default-lazy-init="false">
    
        
        <context:annotation-config />
        <context:component-scan base-package="com.test.task" />
        <task:annotation-driven/>
        
        
        
    
    </beans>

四、实体类：

package com.test.task;
    
    import java.text.DateFormat;
    import java.util.Date;
    
    import org.springframework.scheduling.annotation.Scheduled;
    import org.springframework.stereotype.Component;
    
    @Component
    public class TestTask {
        @Scheduled(cron = "*/5 * * * * ?")
        public void print(){
            String time = DateFormat.getDateTimeInstance().format(new Date());
            System.out.println("定时器触发打印"+time);
        }
    }

[Center]: /images/20210511/e5ec9bde9db44ddb97f638ae8d2e67b3.png