Spring---计划任务

1、概述

　　　　1.1、Spring3.1开始，计划任务在Spring中实现变得异常简单；

　　　　　　　　a,在配置类注解@EnableScheduling ，开启对计划任务的支持；

　　　　　　　　b,在要执行计划任务的方法上注解@Scheduled ，声明这是一个计划任务；

　　　　1.2、案例

package com.an.config;
 
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableScheduling;
 
/**
 * @description: @EnableScheduling开启定时任务支持
 * @author: anpeiyong
 * @date: Created in 2019/11/20 20:17
 * @since:
 */
@Configuration
@ComponentScan(value = "com.an")
@EnableScheduling
public class ScheduleConfig {
}

package com.an.schedule;
 
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;
 
/**
 * @description:
 * @author: anpeiyong
 * @date: Created in 2019/11/20 20:06
 * @since:
 */
@Service
public class ScheduleService {
 
    @Scheduled(cron = "0/1 * * * * ?")
    public void exec(){
        System.out.println("每隔一秒执行一次");
    }
}

package com.an.main;
 
import com.an.config.ScheduleConfig;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 
/**
 * @description:
 * @author: anpeiyong
 * @date: Created in 2019/11/20 20:18
 * @since:
 */
public class ScheduleMainTest {
 
    public static void main(String[] args) {
        AnnotationConfigApplicationContext annotationConfigApplicationContext=new AnnotationConfigApplicationContext(ScheduleConfig.class);
    }
}