/*
 * 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
 *
 *      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.http.client;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;

import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.lang.Nullable;
import org.springframework.util.StreamUtils;

Simple implementation of ClientHttpResponse that reads the response's body into memory, thus allowing for multiple invocations of getBody().
Author:Arjen Poutsma
Since:3.1
/** * Simple implementation of {@link ClientHttpResponse} that reads the response's body * into memory, thus allowing for multiple invocations of {@link #getBody()}. * * @author Arjen Poutsma * @since 3.1 */
final class BufferingClientHttpResponseWrapper implements ClientHttpResponse { private final ClientHttpResponse response; @Nullable private byte[] body; BufferingClientHttpResponseWrapper(ClientHttpResponse response) { this.response = response; } @Override public HttpStatus getStatusCode() throws IOException { return this.response.getStatusCode(); } @Override public int getRawStatusCode() throws IOException { return this.response.getRawStatusCode(); } @Override public String getStatusText() throws IOException { return this.response.getStatusText(); } @Override public HttpHeaders getHeaders() { return this.response.getHeaders(); } @Override public InputStream getBody() throws IOException { if (this.body == null) { this.body = StreamUtils.copyToByteArray(this.response.getBody()); } return new ByteArrayInputStream(this.body); } @Override public void close() { this.response.close(); } }