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150 lines
4.3 KiB
150 lines
4.3 KiB
/*
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* ====================================================================
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*
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*/
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package org.apache.http.client.utils;
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import java.io.Closeable;
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import java.io.IOException;
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import org.apache.http.HttpEntity;
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import org.apache.http.HttpResponse;
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import org.apache.http.client.HttpClient;
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import org.apache.http.client.methods.CloseableHttpResponse;
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import org.apache.http.util.EntityUtilsHC4;
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/**
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* Convenience methods for closing response and client objects.
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*
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* @since 4.2
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*/
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public class HttpClientUtils {
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private HttpClientUtils() {
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}
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/**
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* Unconditionally close a response.
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* <p>
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* Example Code:
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*
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* <pre>
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* HttpResponse httpResponse = null;
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* try {
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* httpResponse = httpClient.execute(httpGet);
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* } catch (Exception e) {
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* // error handling
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* } finally {
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* HttpClientUtils.closeQuietly(httpResponse);
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* }
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* </pre>
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*
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* @param response
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* the HttpResponse to release resources, may be null or already
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* closed.
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*
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* @since 4.2
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*/
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public static void closeQuietly(final HttpResponse response) {
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if (response != null) {
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final HttpEntity entity = response.getEntity();
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if (entity != null) {
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try {
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EntityUtilsHC4.consume(entity);
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} catch (final IOException ex) {
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}
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}
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}
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}
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/**
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* Unconditionally close a response.
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* <p>
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* Example Code:
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*
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* <pre>
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* HttpResponse httpResponse = null;
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* try {
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* httpResponse = httpClient.execute(httpGet);
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* } catch (Exception e) {
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* // error handling
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* } finally {
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* HttpClientUtils.closeQuietly(httpResponse);
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* }
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* </pre>
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*
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* @param response
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* the HttpResponse to release resources, may be null or already
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* closed.
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*
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* @since 4.3
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*/
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public static void closeQuietly(final CloseableHttpResponse response) {
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if (response != null) {
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try {
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try {
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EntityUtilsHC4.consume(response.getEntity());
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} finally {
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response.close();
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}
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} catch (final IOException ignore) {
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}
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}
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}
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/**
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* Unconditionally close a httpClient. Shuts down the underlying connection
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* manager and releases the resources.
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* <p>
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* Example Code:
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*
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* <pre>
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* HttpClient httpClient = HttpClients.createDefault();
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* try {
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* httpClient.execute(request);
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* } catch (Exception e) {
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* // error handling
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* } finally {
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* HttpClientUtils.closeQuietly(httpClient);
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* }
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* </pre>
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*
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* @param httpClient
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* the HttpClient to close, may be null or already closed.
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* @since 4.2
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*/
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public static void closeQuietly(final HttpClient httpClient) {
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if (httpClient != null) {
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if (httpClient instanceof Closeable) {
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try {
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((Closeable) httpClient).close();
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} catch (final IOException ignore) {
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}
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}
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}
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}
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}
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