<dependency>
   <groupId>javax.servlet</groupId>
   <artifactId>javax.servlet-api</artifactId>
   <version>3.1.0</version>
   <scope>provided</scope>
  </dependency>
  <dependency>
   <groupId>org.springframework</groupId>
   <artifactId>spring-webmvc</artifactId>
   <version>4.2.3.RELEASE</version>
  </dependency>

@RequestMapping(value="/asynctask", method = RequestMethod.GET)
public DeferredResult<ModelAndView> asyncTask(){
  DeferredResult<ModelAndView> deferredResult = new DeferredResult<ModelAndView>();
  System.out.println("/asynctask 调用！thread id is : " + Thread.currentThread().getId());
  longTimeAsyncCallService.makeRemoteCallAndUnknownWhenFinish(new LongTermTaskCallback() {
    @Override
    public void callback(Object result) {
      System.out.println("异步调用执行完成, thread id is : " + Thread.currentThread().getId());
      ModelAndView mav = new ModelAndView("remotecalltask");
      mav.addObject("result", result);
      deferredResult.setResult(mav);
    }
  });
}

public interface LongTermTaskCallback {
  void callback(Object result);
}

public class LongTimeAsyncCallService {
  private final int CorePoolSize = 4;
  private final int NeedSeconds = 3;
  private Random random = new Random();
  private ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(CorePoolSize);
  public void makeRemoteCallAndUnknownWhenFinish(LongTermTaskCallback callback){
    System.out.println("完成此任务需要 : " + NeedSeconds + " 秒");
    scheduler.schedule(new Runnable() {
      @Override
      public void run() {
        callback.callback("长时间异步调用完成.");
      }
    }, "这是处理结果:)", TimeUnit.SECONDS);
  }
}

@RequestMapping(value="/longtimetask", method = RequestMethod.GET)
public WebAsyncTask longTimeTask(){
  System.out.println("/longtimetask被调用 thread id is : " + Thread.currentThread().getId());
  Callable<ModelAndView> callable = new Callable<ModelAndView>() {
    public ModelAndView call() throws Exception {
      Thread.sleep(3000); //假设是一些长时间任务
      ModelAndView mav = new ModelAndView("longtimetask");
      mav.addObject("result", "执行成功");
      System.out.println("执行成功 thread id is : " + Thread.currentThread().getId());
      return mav;
    }
  };
  return new WebAsyncTask(callable);
}

@RequestMapping(value="/longtimetask", method = RequestMethod.GET)
public WebAsyncTask longTimeTask(){
  System.out.println("/longtimetask被调用 thread id is : " + Thread.currentThread().getId());
  Callable<ModelAndView> callable = new Callable<ModelAndView>() {
    public ModelAndView call() throws Exception {
      Thread.sleep(3000); //假设是一些长时间任务
      ModelAndView mav = new ModelAndView("longtimetask");
      mav.addObject("result", "执行成功");
      System.out.println("执行成功 thread id is : " + Thread.currentThread().getId());
      return mav;
    }
  };
  
  
  WebAsyncTask asyncTask = new WebAsyncTask(2000, callable);
  asyncTask.onTimeout(
      new Callable<ModelAndView>() {
        public ModelAndView call() throws Exception {
          ModelAndView mav = new ModelAndView("longtimetask");
          mav.addObject("result", "执行超时");
          System.out.println("执行超时 thread id is ：" + Thread.currentThread().getId());
          return mav;
        }
      }
  );
  return new WebAsyncTask(3000, callable);
}

  @RequestMapping(value = "/asynctask", method = RequestMethod.GET)
  public DeferredResult<ModelAndView> asyncTask() {
    DeferredResult<ModelAndView> deferredResult = new DeferredResult<ModelAndView>(2000L);
    System.out.println("/asynctask 调用！thread id is : " + Thread.currentThread().getId());
    longTimeAsyncCallService.makeRemoteCallAndUnknownWhenFinish(new LongTermTaskCallback() {
      @Override
      public void callback(Object result) {
        System.out.println("异步调用执行完成, thread id is : " + Thread.currentThread().getId());
        ModelAndView mav = new ModelAndView("remotecalltask");
        mav.addObject("result", result);
        deferredResult.setResult(mav);
      }
    });

    deferredResult.onTimeout(new Runnable() {
      @Override
      public void run() {
        System.out.println("异步调用执行超时！thread id is : " + Thread.currentThread().getId());
        ModelAndView mav = new ModelAndView("remotecalltask");
        mav.addObject("result", "异步调用执行超时");
        deferredResult.setResult(mav);
      }
    });

    return deferredResult;
  }

  @ExceptionHandler(Exception.class)
  public ModelAndView handleAllException(Exception ex) {
    ModelAndView model = new ModelAndView("error");
    model.addObject("result", ex.getMessage());
    return model;
  }