001/* 002 * Copyright 2002-2015 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.remoting.httpinvoker; 018 019import java.io.IOException; 020 021import org.springframework.remoting.support.RemoteInvocation; 022import org.springframework.remoting.support.RemoteInvocationResult; 023 024/** 025 * Strategy interface for actual execution of an HTTP invoker request. 026 * Used by HttpInvokerClientInterceptor and its subclass 027 * HttpInvokerProxyFactoryBean. 028 * 029 * <p>Two implementations are provided out of the box: 030 * <ul> 031 * <li><b>{@code SimpleHttpInvokerRequestExecutor}:</b> 032 * Uses JDK facilities to execute POST requests, without support 033 * for HTTP authentication or advanced configuration options. 034 * <li><b>{@code HttpComponentsHttpInvokerRequestExecutor}:</b> 035 * Uses Apache's Commons HttpClient to execute POST requests, 036 * allowing to use a preconfigured HttpClient instance 037 * (potentially with authentication, HTTP connection pooling, etc). 038 * </ul> 039 * 040 * @author Juergen Hoeller 041 * @since 1.1 042 * @see HttpInvokerClientInterceptor#setHttpInvokerRequestExecutor 043 */ 044public interface HttpInvokerRequestExecutor { 045 046 /** 047 * Execute a request to send the given remote invocation. 048 * @param config the HTTP invoker configuration that specifies the 049 * target service 050 * @param invocation the RemoteInvocation to execute 051 * @return the RemoteInvocationResult object 052 * @throws IOException if thrown by I/O operations 053 * @throws ClassNotFoundException if thrown during deserialization 054 * @throws Exception in case of general errors 055 */ 056 RemoteInvocationResult executeRequest(HttpInvokerClientConfiguration config, RemoteInvocation invocation) 057 throws Exception; 058 059}