org.springframework.http.client.HttpComponentsClientHttpResponse Maven / Gradle / Ivy
/*
* Copyright 2002-2023 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.IOException;
import java.io.InputStream;
import org.apache.hc.core5.http.ClassicHttpResponse;
import org.apache.hc.core5.http.HttpEntity;
import org.apache.hc.core5.http.io.entity.EntityUtils;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatusCode;
import org.springframework.http.support.HttpComponentsHeadersAdapter;
import org.springframework.lang.Nullable;
import org.springframework.util.MultiValueMap;
/**
* {@link ClientHttpResponse} implementation based on
* Apache HttpComponents HttpClient.
*
* Created via the {@link HttpComponentsClientHttpRequest}.
*
* @author Oleg Kalnichevski
* @author Arjen Poutsma
* @since 3.1
* @see HttpComponentsClientHttpRequest#execute()
*/
final class HttpComponentsClientHttpResponse implements ClientHttpResponse {
private final ClassicHttpResponse httpResponse;
@Nullable
private HttpHeaders headers;
HttpComponentsClientHttpResponse(ClassicHttpResponse httpResponse) {
this.httpResponse = httpResponse;
}
@Override
public HttpStatusCode getStatusCode() {
return HttpStatusCode.valueOf(this.httpResponse.getCode());
}
@Override
public String getStatusText() {
return this.httpResponse.getReasonPhrase();
}
@Override
public HttpHeaders getHeaders() {
if (this.headers == null) {
MultiValueMap adapter = new HttpComponentsHeadersAdapter(this.httpResponse);
this.headers = HttpHeaders.readOnlyHttpHeaders(adapter);
}
return this.headers;
}
@Override
public InputStream getBody() throws IOException {
HttpEntity entity = this.httpResponse.getEntity();
return (entity != null ? entity.getContent() : InputStream.nullInputStream());
}
@Override
public void close() {
// Release underlying connection back to the connection manager
try {
try {
// Attempt to keep connection alive by consuming its remaining content
EntityUtils.consume(this.httpResponse.getEntity());
}
finally {
this.httpResponse.close();
}
}
catch (IOException ex) {
// Ignore exception on close...
}
}
}