SpringBoot异步调用方法并接收返回值

@Configuration
@EnableAsync
public class ExecutorConfig {
 
 
  /**
   * 线程池
   *
   * @return
   */
  @Bean(name = "asyncExecutor")
  public Executor asyncExecutor() {
    ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
    executor.setCorePoolSize(10);
    executor.setMaxPoolSize(15);
    executor.setQueueCapacity(25);
    executor.setKeepAliveSeconds(200);
    executor.setThreadNamePrefix("async-");
    executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
    // 等待所有任务都完成再继续销毁其他的Bean
    executor.setWaitForTasksToCompleteOnShutdown(true);
    // 线程池中任务的等待时间，如果超过这个时候还没有销毁就强制销毁，以确保应用最后能够被关闭，而不是阻塞住
    executor.setAwaitTerminationSeconds(60);
    executor.initialize();
    return executor;
  }
 
 
}

@Service
public class AsyncService {
 
  @Async("asyncExecutor")
  public Future<Integer> methodB(){
    try{
      Thread.sleep(1000);
    } catch (Exception e) {
      e.printStackTrace();
    }
    return new AsyncResult<>(1);
  }
 
  @Async("asyncExecutor")
  public Future<Integer> methodC(){
    try{
      Thread.sleep(2000);
    } catch (Exception e) {
      e.printStackTrace();
    }
    return new AsyncResult<>(2);
  }
 
  @Async("asyncExecutor")
  public Future<Integer> methodD(){
    try{
      Thread.sleep(3000);
    } catch (Exception e) {
      e.printStackTrace();
    }
    return new AsyncResult<>(3);
  }
}
@GetMapping("test")
  public Integer methodA() throws Exception{
    long start = System.currentTimeMillis();
    Future<Integer> future1 = asyncService.methodB();
    Future<Integer> future2 = asyncService.methodC();
    Future<Integer> future3 = asyncService.methodD();
    Integer x = future1.get();
    Integer y = future2.get();
    Integer z = future3.get();
    long end = System.currentTimeMillis();
    System.out.println("耗时：" + (end - start));
    return x + y +z;
  }
}