HTTP POST Request in Java .setRequestMethod() Does Nothing

Question

I am absolutely tearing my hair out over this one.

I'm trying to make a HTTP POST request in Java, but it keeps sending it as a GET instead. I followed several different ways to send a POST request, but all of them just end up sending as a GET.

This is what I currently have:

        URL url = new URL("https://api.soundcloud.com/oauth2/token");
        URLConnection conn = url.openConnection();
        conn.setDoOutput(true);

        OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
        wr.write(data);
        wr.close();

        // Get the response
            BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String line;
            while ((line = rd.readLine()) != null) {
                resp += line;
            }
            rd.close();

I read on one post on StackOverflow that conn.setDoOuput(true) is supposed to make the connection a POST automatically; however, when I debug through the code, the protected member conn.method stays as GET.

I also tried casting url.openConnection() as a HttpURLConnection and called .setRequestMethod("POST") on it, which did absolutely nothing to change conn.method.

As a bonus, I'm trying to do soundcloud authentication and basically every way I've thought of doing it has been an utter failure... Maybe someone has a better solution for this?

Answer 1

Have you tried using SoundCloud's Java SDK?

https://github.com/soundcloud/java-api-wrapper

This should take most of the HTTP/OAuth2 away from your code.

But even if you want more control over what you are doind, it is usually a good idea to use a proper HTTP client library, like Apache's, instead of trying to fight agains the very basic Java SE support for it. Check out: http://hc.apache.org/httpcomponents-client-ga/index.html