How to handle HTTP authentication using HttpURLConnection?

Question

I\'m writing a Java client that POSTs to a HTTP server that requires authentication.
I have to support at least the following three authentication metho

Answer 1

Related to @Mat's comment :

Here is an example used by my team and I :

import org.apache.commons.codec.binary.Base64;

HttpGet getRequest = new HttpGet(endpoint);
getRequest.addHeader("Authorization", "Basic " + getBasicAuthenticationEncoding());

private String getBasicAuthenticationEncoding() {

        String userPassword = username + ":" + password;
        return new String(Base64.encodeBase64(userPassword.getBytes()));
    }

Hope it helps!

Answer 2

Do you need output streaming? The HttpURLConnection most definitely supports authentication with the Authenticator class, see: Http Authentication.

Update: In case the Authenticator is not an option, you can manually do HTTP basic authentication by adding an extra header to your HTTP request. Try the following code (untested):

String userPassword = username + ":" + password;
String encoding = new sun.misc.BASE64Encoder().encode(userPassword.getBytes());
URLConnection uc = url.openConnection();
uc.setRequestProperty("Authorization", "Basic " + encoding);
uc.connect();