spring BufferingClientHttpResponseWrapper 源码
spring BufferingClientHttpResponseWrapper 代码
文件路径：/spring-web/src/main/java/org/springframework/http/client/BufferingClientHttpResponseWrapper.java
/*
* 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.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatusCode;
import org.springframework.lang.Nullable;
import org.springframework.util.StreamUtils;
/**
* 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 HttpStatusCode getStatusCode() throws IOException {
return this.response.getStatusCode();
}
@Override
@Deprecated
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();
}
}
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