java spring boot 定时器详解编程语言

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); 
    } 
 
 
 
 
}

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"); 
    } 
 
 
}