Argthtjtr

I used the below code to generate access token and generated access token but not refresh token i'm getting 400 bad request for refresh token.

static String tenantId = "xxxxxxxxxxxxxxxxxxxxxxx";

static String username = "xxxxxxxxxxxxxxxxxxxxxxx";

static String password = "xxxxxxxxx";

static String clientId = "xxxxxxxxxxxxxxxxxxxxxxx";

static String resource = "https://dev.sharepoint.com";

static String userEmail = "xxxxxxxxxxxxxxxxxxxxxx";

static String clientSecret = "xxxxxxxxxxxxxxxxxxx";



public static void main(String args) throws MalformedURLException, IOException {

    AuthenticationContext authContext = null;

    AuthenticationResult authResult = null;

    ExecutorService service = null;



    try {

        service = Executors.newFixedThreadPool(1);

        String url = "https://login.microsoftonline.com/" + tenantId + "/oauth2/authorize";

        authContext = new AuthenticationContext(url, false, service);

        ClientCredential credential = new ClientCredential(clientId, clientSecret);

        Future<AuthenticationResult> future = authContext.acquireToken(resource, credential, null);



        authResult = future.get();

        System.out.println("get access token: n" + authResult.getAccessToken());

        System.out.println("get refresh token: n" + authResult.getRefreshToken());

    } catch (Exception ex) {

        ex.printStackTrace();

    }

    // get access token by refresh token

     getToken(authResult.getRefreshToken());

}



public static void getToken(String refreshToken) throws IOException {



    String encoding = "UTF-8";

    String params = "client_id=" + clientId + "&refresh_token=" + refreshToken

            + "&grant_type=refresh_token&resource=https%3A%2F%2Fdev.sharepoint.com";

    String path = "https://login.microsoftonline.com/" + tenantId + "/oauth2/token";

    byte data = params.getBytes(encoding);

    URL url = new URL(path);

    HttpURLConnection conn = (HttpURLConnection) url.openConnection();

    conn.setRequestMethod("POST");

    conn.setDoOutput(true);

    conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

    //conn.setRequestProperty("Content-Length", String.valueOf(data.length));

    conn.setConnectTimeout(5 * 1000);

    OutputStream outStream = conn.getOutputStream();

    outStream.write(data);

    outStream.flush();

    outStream.close();

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

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



    BufferedReader br = null;

    if (conn.getResponseCode() != 200) {

        br = new BufferedReader(new InputStreamReader((conn.getErrorStream())));

    } else {

        br = new BufferedReader(new InputStreamReader((conn.getInputStream())));

    }

    System.out.println("Response body : " + br.readLine());

}

}

After getting access token i tried passing the token through postman and getting 401 - Unauthorized

URL used : https://dev.sharepoint.com/sites/_api/Web/GetFolderByServerRelativePath(decodedurl='/sites/Shared%20Documents/Approved')?access_token=eyJ0eXAiOiJKV1QxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxF1V3RWXy1oeFZ0REpKWk00USIsIxxxxxxxxxxxxxxxxxxZnNxZFF1V3RWXy1oeFZ0REpKWk00xxxxxxxxxxxxxxxczovL21hcnJpb3R0ZGV2LnNoxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Response : {"error_description":"The server was unable to process the request due to an internal error. For more information about the error, either turn on IncludeExceptionDetailInFaults (either from ServiceBehaviorAttribute or from the configuration behavior) on the server in order to send the exception information back to the client, or turn on tracing as per the Microsoft .NET Framework SDK documentation and inspect the server trace logs."}