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How to use Basic Authentication |
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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[] args) throws 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.setDoAuthentication( true );
try {
// execute the GET
int status = client.executeMethod( get );
// print the status and response
System.out.println(status + "\n" +
get.getResponseBodyAsString());
} finally {
// release any connection resources used by the method
get.releaseConnection();
}
}
}
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Source: Apache HttpClient
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