I'm sorry that I'm wrong! Get the method to use the browser and return the code The Post method uses the HttpRequest, and we can get the parameter from HtppResponse
So, if you want to get the code, just use a browser and redirect the URL to get the code
This is how I get access_token
If you want, you can use google-oauth-java-client to authorize twitter facebook
I solve this javadoc which shows me some examples This is the root of JavaDoc This is the package I use to solve Here is the example I am writing
// https://server.example.com/token server url example try { TokenResponse response = new AuthorizationCodeTokenRequest(new NetHttpTransport(), new JacksonFactory(), new GenericUrl("here is the server url "), "here write your code") .setRedirectUri("here write the redirectUrl") .set("client_id","here write your client_id") .set("client_secret","here write your client_secret") .set("Other else need","Other else need") .execute(); System.out.println("Access token: " + response.getAccessToken()); } catch (TokenResponseException e) { if (e.getDetails() != null) { System.err.println("Error: " + e.getDetails().getError()); if (e.getDetails().getErrorDescription() != null) { System.err.println(e.getDetails().getErrorDescription()); } if (e.getDetails().getErrorUri() != null) { System.err.println(e.getDetails().getErrorUri()); } } else { System.err.println(e.getMessage()); } }