https://github.com/spring-projects/spring-framework: Spring Web (Spring IO)
  • Juergen Hoeller 
/*
 * Copyright 2002-2016 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.web.context.request.async;


Exception to be thrown when an async request times out. Alternatively an applications can register a DeferredResultProcessingInterceptor or a CallableProcessingInterceptor to handle the timeout through the MVC Java config or the MVC XML namespace or directly through properties of the RequestMappingHandlerAdapter. 
By default the exception will be handled as a 503 error.

Author:Rossen Stoyanchev
Since:4.2.8
/**
 * Exception to be thrown when an async request times out.
 * Alternatively an applications can register a
 * {@link DeferredResultProcessingInterceptor} or a
 * {@link CallableProcessingInterceptor} to handle the timeout through
 * the MVC Java config or the MVC XML namespace or directly through properties
 * of the {@code RequestMappingHandlerAdapter}.
 *
 * <p>By default the exception will be handled as a 503 error.
 *
 * @author Rossen Stoyanchev
 * @since 4.2.8
 */
@SuppressWarnings("serial")
public class AsyncRequestTimeoutException extends RuntimeException {

}