/*
 * Copyright 2002-2017 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
 *
 *      https://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.http.client;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import org.springframework.http.HttpHeaders;

Base implementation of ClientHttpRequest that buffers output in a byte array before sending it over the wire.
Author:Arjen Poutsma
Since:3.0.6
/** * Base implementation of {@link ClientHttpRequest} that buffers output * in a byte array before sending it over the wire. * * @author Arjen Poutsma * @since 3.0.6 */
abstract class AbstractBufferingClientHttpRequest extends AbstractClientHttpRequest { private ByteArrayOutputStream bufferedOutput = new ByteArrayOutputStream(1024); @Override protected OutputStream getBodyInternal(HttpHeaders headers) throws IOException { return this.bufferedOutput; } @Override protected ClientHttpResponse executeInternal(HttpHeaders headers) throws IOException { byte[] bytes = this.bufferedOutput.toByteArray(); if (headers.getContentLength() < 0) { headers.setContentLength(bytes.length); } ClientHttpResponse result = executeInternal(headers, bytes); this.bufferedOutput = new ByteArrayOutputStream(0); return result; }
Abstract template method that writes the given headers and content to the HTTP request.
Params:
  • headers – the HTTP headers
  • bufferedOutput – the body content
Returns:the response object for the executed request
/** * Abstract template method that writes the given headers and content to the HTTP request. * @param headers the HTTP headers * @param bufferedOutput the body content * @return the response object for the executed request */
protected abstract ClientHttpResponse executeInternal(HttpHeaders headers, byte[] bufferedOutput) throws IOException; }