SpringBoot中注解实现定时任务的两种方式

package com.yuhuofei;

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

@EnableScheduling
@SpringBootApplication
public class SpringbootSwaggerApplication {

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

}

package com.yuhuofei.task;

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

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

/**
 * @Description
 * @ClassName ScheduledTask
 * @Author yuhuofei
 * @Date 2022/8/24 21:22
 * @Version 1.0
 */
@Service
public class ScheduledTask {

    //cron表达式
    //秒 分 时 日 月 周几
    //下面的语句表示每隔10秒执行一次
    @Scheduled(cron = "*/10 * * * * ?")
    public void printHello() {
        System.out.println("hello，你好呀!现在的时间是：" + new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()));
    }
}