BASIC authentication from JAVA to Sharepoint 2013 REST API

Question

Java application needs access to SharePoint 2013 REST API https://msdn.microsoft.com/en-us/library/office/jj860569.aspx

Would prefer to use BASIC authentication:

There are many examples of using the rest api's on the web but none seem to deal with authentication. Maybe I'm missing something really simple here.

This works manually via POSTMAN: http://tech.bool.se/basic-rest-request-sharepoint-using-postman/ but requires me to enter username and password in browser.

I've tried implementing this: HttpClientBuilder basic auth using

<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.4.1</version>
</dependency>

This results in -> WARNING: NTLM authentication error: Credentials cannot be used for NTLM authentication: org.apache.http.auth.UsernamePasswordCredentials

Answer 1

Thanks @fateddy that does the trick: Remember to switch out UsernamePasswordCredentials("username", "password"));for NTCredentials(, , ,);

Using this maven dependency:

<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.4.1</version>
</dependency>

The authentication to SharePoint works:

import org.apache.http.client.CredentialsProvider;
import org.apache.http.auth.AuthScope;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.auth.NTCredentials;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.util.EntityUtils;

public class SharePointClientAuthentication {

public static void main(String[] args) throws Exception {
    CredentialsProvider credsProvider = new BasicCredentialsProvider();
    credsProvider.setCredentials(
            new AuthScope(AuthScope.ANY),
            new NTCredentials("username", "password", "https://hostname", "domain"));
    CloseableHttpClient httpclient = HttpClients.custom()
            .setDefaultCredentialsProvider(credsProvider)
            .build();
    try {
        HttpGet httpget = new HttpGet("http://hostname/_api/web/lists");

        System.out.println("Executing request " + httpget.getRequestLine());
        CloseableHttpResponse response = httpclient.execute(httpget);
        try {
            System.out.println("----------------------------------------");
            System.out.println(response.getStatusLine());
            EntityUtils.consume(response.getEntity());
        } finally {
            response.close();
        }
    } finally {
        httpclient.close();
    }
}
}

And you end up with : HTTP/1.1 200 OK