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Apache HttpClient (4.1 et plus récent): comment faire l'authentification de base?

Comment ajouter une authentification de base pour le client par défaut de la bibliothèque httpClient? J'ai vu des exemples où ils utilisent client.getCredentialProvider(), mais je pense que toutes ces méthodes sont pour la version 4.0.1 ou 3.x de la bibliothèque. Y a-t-il un nouvel exemple de la façon de procéder? Merci beaucoup.

javaapache-httpclient-4.xapache-httpcomponents
38
Pablo
CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
credentialsProvider.setCredentials(AuthScope.ANY, 
    new UsernamePasswordCredentials("username", "password"));
CloseableHttpClient httpClient = 
    HttpClientBuilder.create().setDefaultCredentialsProvider(credentialsProvider).build();
77
Joe

Vous n'avez pas téléchargé l'exemple à partir du site Web? Et les exemples sont ici: httpcomponents-client-4.1.3\examples\org\Apache\http\examples\client

Quant à https, il suffit de voir ClientAuthentication.Java:

/*
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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.
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 * ====================================================================
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 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.Apache.org/>.
 */

package org.Apache.http.examples.client;

import org.Apache.http.HttpEntity;
import org.Apache.http.HttpResponse;
import org.Apache.http.auth.AuthScope;
import org.Apache.http.auth.UsernamePasswordCredentials;
import org.Apache.http.client.methods.HttpGet;
import org.Apache.http.impl.client.DefaultHttpClient;
import org.Apache.http.util.EntityUtils;

/**
 * A simple example that uses HttpClient to execute an HTTP request against
 * a target site that requires user authentication.
 */
public class ClientAuthentication {

    public static void main(String[] args) throws Exception {
        DefaultHttpClient httpclient = new DefaultHttpClient();
        try {
            httpclient.getCredentialsProvider().setCredentials(
                    new AuthScope("localhost", 443),
                    new UsernamePasswordCredentials("username", "password"));

            HttpGet httpget = new HttpGet("https://localhost/protected");

            System.out.println("executing request" + httpget.getRequestLine());
            HttpResponse response = httpclient.execute(httpget);
            HttpEntity entity = response.getEntity();

            System.out.println("----------------------------------------");
            System.out.println(response.getStatusLine());
            if (entity != null) {
                System.out.println("Response content length: " + entity.getContentLength());
            }
            EntityUtils.consume(entity);
        } finally {
            // When HttpClient instance is no longer needed,
            // shut down the connection manager to ensure
            // immediate deallocation of all system resources
            httpclient.getConnectionManager().shutdown();
        }
    }
}

Bref:

DefaultHttpClient httpclient = new DefaultHttpClient();
httpclient.getCredentialsProvider().setCredentials(
                    new AuthScope("localhost", 443),
                    new UsernamePasswordCredentials("username", "password"));
20
Jacob

Une autre option moderne pour 4.3 est d'utiliser l'extension Fluent:

Executor executor = Executor.newInstance()
        .auth(new HttpHost("somehost"), "username", "password")
        .auth(new HttpHost("securehost", 443, "https"), "username", "password") // https example
        .auth(new HttpHost("myproxy", 8080), "username", "password")
        .authPreemptive(new HttpHost("myproxy", 8080));

String content = executor.execute(Request.Get("http://somehost/"))
        .returnContent().asString();
9
Barett

DefaultHttpClient a getCredentialsProvider () mais pas HttpClient. Vous devez déclarer DefaultHttpClient client = ... au lieu de HttpClient client = ...

4
stefan

J'avais cette exigence d'invoquer une URL avec l'authentification de base qui nécessitait également des paramètres de proxy. C'est ce qui a fonctionné pour moi.

    import Java.io.IOException;
    import Java.io.InputStream;
    import Java.io.StringReader;
    import Java.util.HashMap;
    import Java.util.Map;

    import javax.xml.parsers.DocumentBuilder;
    import javax.xml.parsers.DocumentBuilderFactory;
    import javax.xml.parsers.ParserConfigurationException;

    import org.Apache.commons.httpclient.Credentials;
    import org.Apache.commons.httpclient.HostConfiguration;
    import org.Apache.commons.httpclient.HttpClient;
    import org.Apache.commons.httpclient.HttpMethod;
    import org.Apache.commons.httpclient.HttpStatus;
    import org.Apache.commons.httpclient.UsernamePasswordCredentials;
    import org.Apache.commons.httpclient.auth.AuthScope;
    import org.Apache.commons.httpclient.methods.GetMethod;
    import org.w3c.dom.*;

    import javax.xml.parsers.*;


    import org.xml.sax.InputSource;
    import org.xml.sax.SAXException;

    public class TestResponse {

    public final static String TESTURL="https://myURL";
    private static final String PROXY_Host = "www2.proxyXYS";
    private static final int PROXY_PORT = 8080;


    public static void main (String args[]) 
    {
    HttpClient client = new HttpClient();
    HttpMethod method = new GetMethod(TESTURL);
    HostConfiguration config = client.getHostConfiguration();
    config.setProxy(PROXY_Host, PROXY_PORT);

      String username = "User";
      String password = "Pa55w0rd";


    Credentials credentials = new UsernamePasswordCredentials(username, password);
    AuthScope authScope = new AuthScope(PROXY_Host, PROXY_PORT);

    client.getState().setProxyCredentials(authScope, credentials);
    client.getState().setCredentials(AuthScope.ANY, credentials);

    try {
        client.executeMethod(method);

        String response = method.getResponseBodyAsString();

        if (method.getStatusCode() == HttpStatus.SC_OK) {
             response = method.getResponseBodyAsString();
        }
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        method.releaseConnection();
    }
}





}
0
Amit Singh