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How to use Basic Authentication E-mail
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This is a simple example that uses HttpClient to perform a GET using Basic Authentication.

/*
 * $Header: 
 * $Revision$
 * $Date$
 * ====================================================================
 *
 *  Copyright 1999-2004 The Apache Software Foundation
 *
 *  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
 *
 *      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
 * <http://www.apache.org/>.
 *
 * [Additional notices, if required by prior licensing conditions]
 *
 */

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.UsernamePasswordCredentials;
import org.apache.commons.httpclient.auth.AuthScope;
import org.apache.commons.httpclient.methods.GetMethod;

/**
 * A simple example that uses HttpClient to perform a GET using Basic
 * Authentication. Can be run standalone without parameters.
 *
 * You need to have JSSE on your classpath for JDK prior to 1.4
 *
 @author Michael Becke
 */
public class BasicAuthenticationExample {
    
    /**
     * Constructor for BasicAuthenticatonExample.
     */
    public BasicAuthenticationExample() {
        super();
    }
    
    public static void main(String[] argsthrows Exception {
        HttpClient client = new HttpClient();
        
        // pass our credentials to HttpClient, they will only be used for
        // authenticating to servers with realm "realm" on the host
        // "www.verisign.com", to authenticate against an arbitrary realm 
        // or host change the appropriate argument to null.
        client.getState().setCredentials(
                new AuthScope("www.verisign.com"443"realm"),
                new UsernamePasswordCredentials("username""password")
                );
        
        // create a GET method that reads a file over HTTPS, 
        // we're assuming that this file requires basic 
        // authentication using the realm above.
        GetMethod get = new GetMethod(
                "https://www.verisign.com/products/index.html");
        
        // Tell the GET method to automatically handle authentication. The
        // method will use any appropriate credentials to handle basic
        // authentication requests.  Setting this value to false will cause
        // any request for authentication to return with a status of 401.
        // It will then be up to the client to handle the authentication.
        get.setDoAuthenticationtrue );
        
        try {
            // execute the GET
            int status = client.executeMethodget );
            
            // print the status and response
            System.out.println(status + "\n" 
                    get.getResponseBodyAsString());
            
        finally {
            // release any connection resources used by the method
            get.releaseConnection();
        }
    }
}

Source: Apache HttpClient


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