Spring中的任务调度--实现定时的控制台打印

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第一种方式：基于XML方式进行任务调度处理
在线cron表达式生成
sping.xml配置

<?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.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/task
        http://www.springframework.org/schema/task/spring-task.xsd">
    <!--定义的规范-->
    <context:component-scan base-package="com" />
    <!--配置定时调度任务-->
    <task:scheduled-tasks>
        <task:scheduled ref="jobService" method="job01" cron="0/5 * * * * ? "/>
    </task:scheduled-tasks>
</beans>

package com;

import org.springframework.stereotype.Service;

import java.text.SimpleDateFormat;
import java.util.Date;

@Service
public class JobService {
    public void job01(){
        System.out.println("jb01---->"+new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()));
    }
}

package com;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Test {
public static void main (String[] args){
new ClassPathXmlApplicationContext(“sping01.xml”);
}
}
第二种：基于注解的方式进行任务调度处理
spring02.xml：加入 <task:annotation-driven />

<?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.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/task
        http://www.springframework.org/schema/task/spring-task.xsd">
    <!--定义的规范-->
    <context:component-scan base-package="com" />
    <!--自动配置定时调度任务-->
    <task:annotation-driven />
</beans>

方法前加 @Scheduled(cron = “0/2 * * * * ?”)

package com;

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

import java.text.SimpleDateFormat;
import java.util.Date;

@Service
public class JobService {
    @Scheduled(cron = "0/2 * * * * ?")
    public void job01(){
        System.out.println("jb01---->"+new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()));
    }
}

    package com;

    import org.springframework.context.support.ClassPathXmlApplicationContext;

    public class Test {
        public static void main (String[] args){
                new ClassPathXmlApplicationContext("spring02.xml");
        }
    }