Http post requests unsing NTLM Authentication (java) - rest

Question

I tried to send a HttpRest Call using NTLM Autentication in Java. I tried using the org.apache.http library. it was not a big problem to use the HttpClient to send a Post Request with anonymos authentication.
But i have some troubles with WindowsAuthentication. I even tried to use CredentialProvider with my own Windows credentials (as a compromise, i dont like that either) but i didn’t succeed.
Is there an easy way using NTLM Authentication sending post requests from Java code?
Is there another lib which fits better form my needs?

Answer 1

I still have no idea why the doku from https://hc.apache.org/httpcomponents-client-ga/tutorial/html/authentication.html about NTLM Authentication didn’t have worked for me.
I finally solved my problem doing it similar to the documentation for basic authentication as described on http://www.baeldung.com/httpclient-post-http-request
it now looks like this:
...
CredentialsProvider credsProvider = new BasicCredentialsProvider();
credsProvider.setCredentials(AuthScope.ANY,
new NTCredentials("username", "passwd", hostname, "domain.at"));
HttpClient client = HttpClientBuilder.create().setDefaultCredentialsProvider(credsProvider).build();
HttpPost post = new HttpPost("http://www.example.com"));
StringEntity input = new StringEntity(bodyAsString, HTTP.UTF_8);
input.setContentType("application/json");
input.setContentEncoding("UTF-8");
post.setEntity(input);
post.setHeader("Accept", "application/json");
post.setHeader("Content-type", "application/json");
HttpResponse response = client.execute(post);
...