java spring boot 定时器

java spring boot 定时器

启动类加个

@EnableScheduling

package com.example.demo2122;

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

@SpringBootApplication
@EnableScheduling
public class Demo2122Application {

    public static void main(String[] args) {
        SpringApplication.run(Demo2122Application.class, args);
    }




}

然后函数前面加个

 @Scheduled(fixedRate = 5000)

package com.example.demo2122;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import javax.annotation.Resource;

import java.util.*;
@RestController
@Component
public class HelloControl {

    @GetMapping("/hello")
    public String hello(@RequestParam(value = "name", defaultValue = "World") String name) {


        return "fwef";
    }
    @Scheduled(fixedRate = 5000)
    public void scheduledTask1(){
        System.out.println("5秒执行一次");
    }


}

然后。就跑起来了。。。