Paypal Rest services - Response: Internal Service Error

Question

This is my code. I am not using Maven or curl.

String encoding = Base64.encodeBase64String((clientId + ":" + clientSecret).getBytes());
encoding = encoding.replaceAll("\n", "");

URL url1 = new URL("https://api.sandbox.paypal.com/v1/oauth2/token");
HttpURLConnection conn = (HttpURLConnection) url1.openConnection();

conn.setRequestMethod("POST");
conn.setRequestProperty("grant_type", "client_credentials");
conn.setRequestProperty("Authorization", "Basic " + encoding);

System.out.println(conn.getResponseCode());

if (conn.getResponseCode() == 500) {
InputStream error = conn.getErrorStream();
BufferedReader er = new BufferedReader(new InputStreamReader(error));
String erLine;
while ((erLine = er.readLine()) != null) {
System.out.println(erLine);
}
}

InputStream content = conn.getInputStream();
BufferedReader in = new BufferedReader(new InputStreamReader(content));
String line;
while ((line = in.readLine()) != null) {
System.out.println(line);
}
conn.disconnect();

OUTPUT:

500 {"name":"INTERNAL_SERVICE_ERROR","information_link":"https://api.sandbox.paypal.com/docs/api/#INTERNAL_SERVICE_ERROR","debug_id":"023ff49775e72"}

PROBLEM:

Well, when I do this call using curl, it gives me an appropriate response. Are the services not equipped to do communication is this way ?

Answer 1

Can you print your Authorization header and inspect whether it's correctly populated? We are currently returning a HTTP500 if your Authorization header is empty (which we'll change to return a more appropriate error obviously).