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/*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* .
*
*/
package org.apache.http.client.utils;
import java.io.Closeable;
import java.io.IOException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.util.EntityUtils;
/**
* Convenience methods for closing response and client objects.
*
* @since 4.2
*/
public class HttpClientUtils {
private HttpClientUtils() {
}
/**
* Unconditionally close a response.
*
* Example Code:
*
*
* HttpResponse httpResponse = null;
* try {
* httpResponse = httpClient.execute(httpGet);
* } catch (Exception e) {
* // error handling
* } finally {
* HttpClientUtils.closeQuietly(httpResponse);
* }
*
*
* @param response
* the HttpResponse to release resources, may be null or already
* closed.
*
* @since 4.2
*/
public static void closeQuietly(final HttpResponse response) {
if (response != null) {
final HttpEntity entity = response.getEntity();
if (entity != null) {
try {
EntityUtils.consume(entity);
} catch (final IOException ex) {
}
}
}
}
/**
* Unconditionally close a response.
*
* Example Code:
*
*
* HttpResponse httpResponse = null;
* try {
* httpResponse = httpClient.execute(httpGet);
* } catch (Exception e) {
* // error handling
* } finally {
* HttpClientUtils.closeQuietly(httpResponse);
* }
*
*
* @param response
* the HttpResponse to release resources, may be null or already
* closed.
*
* @since 4.3
*/
public static void closeQuietly(final CloseableHttpResponse response) {
if (response != null) {
try {
try {
EntityUtils.consume(response.getEntity());
} finally {
response.close();
}
} catch (final IOException ignore) {
}
}
}
/**
* Unconditionally close a httpClient. Shuts down the underlying connection
* manager and releases the resources.
*
* Example Code:
*
*
* HttpClient httpClient = HttpClients.createDefault();
* try {
* httpClient.execute(request);
* } catch (Exception e) {
* // error handling
* } finally {
* HttpClientUtils.closeQuietly(httpClient);
* }
*
*
* @param httpClient
* the HttpClient to close, may be null or already closed.
* @since 4.2
*/
public static void closeQuietly(final HttpClient httpClient) {
if (httpClient != null) {
if (httpClient instanceof Closeable) {
try {
((Closeable) httpClient).close();
} catch (final IOException ignore) {
}
}
}
}
}
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