spring scheduling 计划任务

Posted 2021-01-28 向前向后看

执行计划任务

首先定义要执行的类

@scheulde加在方法上，代表此方法是计划任务

加在类上，代表所有的方法都是计划任务

package com.example.demo.qin.scheduling;

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

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

/**
 * @program: springboot_test
 * @description: 计划任务类
 * @author: Mr.qin
 * @create: 2018-12-19 23:24
 **/
@Service
public class SchedulingTaskService {
    private  static  final SimpleDateFormat sd = new SimpleDateFormat("HH:mm:ss");
    @Scheduled(fixedRate = 5000)
    public void currentTime(){
        System.out.println("每隔五秒执行一次任务"+sd.format(new Date()));
    }
}

之后在启动类上加 上@enableschuduling

package com.example.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.scheduling.annotation.EnableScheduling;

@SpringBootApplication
@EnableScheduling
public class DemoApplication {

    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }
}