Java SpringBoot注解方式开启异步支持

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package task.demo.controller;   import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; import task.demo.service.AsyncService;   import javax.sound.midi.Soundbank; import java.time.LocalDateTime; import java.time.format.DateTimeFormatter;   @RestController public class AsyncController {     @Autowired     AsyncService asyncService;       @RequestMapping("/hello")     public Object hello() {         //@EnableAsync  //注解方式开启异步支持         String date1 = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));         System.out.println(date1);         asyncService.hello();         String date2 = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));         System.out.println(date2);         return "success";     } }

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package task.demo.service;   import org.springframework.scheduling.annotation.Async; import org.springframework.stereotype.Service;   @Service public class AsyncService {       @Async     public void hello() {         try {             Thread.sleep(3000);         } catch (InterruptedException e) {             e.printStackTrace();         }         System.out.println("开始执行");     } }