springboot异步调用

一、异步调用

@SpringBootApplication(scanBasePackages = {"com.wuxi"})
@EnableAsync // 开启异步调用
public class Myapplication {
    //入口
    public static void main(String[] args) {
        SpringApplication.run(Myapplication.class, args);
    }
}

@Service
public class AsyncService {
    @Async
    public Future<String> doTask() throws Exception {
        Thread.sleep(3000);
        System.out.println("异步线程执行完毕");
        return new AsyncResult<>("线程结束");
    }
}

@Autowired
private AsyncService asyncService;

@RequestMapping("/long")
public Object requestFun() throws Exception {
    Future<String> task = asyncService.doTask();
    System.out.println("主线程方法在异步调用的方法之后，执行情况");
    while (true) {
        if(task.isDone()){
            break;
        }
        Thread.sleep(1000);
    }
    return "你好世界";
}