Java: fetch URL with HTTPBasic Authentication

This works for me .

HttpsURLConnection con = null; con = (HttpsURLConnection) obj.openConnection(); String encoding = Base64.getEncoder().encodeToString("username:password".getBytes(StandardCharsets.UTF_8)); con.setRequestProperty("Authorization","Basic "+encoding.replaceAll("\n", ""));

That seems to be a bug in Java.

Have you tried using alternative HTTP clients, such as the library from Apache?

Or instead of using the Authenticator, manually setting the header?

URL url = new URL("http://www.example.com/");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("Authorization", "Basic OGU0ZTc5ODBkABcde....");

The token value is encodeBase64("username:password").