Android Open Source - OneNoteAPISampleAndroid Send Refresh Token Async Task

• Back to Development/api  ↑

From Project

Back to project page OneNoteAPISampleAndroid.

License

The source code is released under:

Apache License

Java Source Code

//*********************************************************
// Copyright (c) Microsoft Corporation
// All rights reserved. 
//// w w w  .  j  a v a 2s .  c  o m
// Licensed under the Apache License, Version 2.0 (the ""License""); 
// you may not use this file except in compliance with the License. 
// You may obtain a copy of the License at 
// http://www.apache.org/licenses/LICENSE-2.0 
//
// THIS CODE IS PROVIDED ON AN  *AS IS* BASIS, WITHOUT 
// WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS 
// OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED 
// WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR 
// PURPOSE, MERCHANTABLITY OR NON-INFRINGEMENT. 
//
// See the Apache Version 2.0 License for specific language 
// governing permissions and limitations under the License.
//*********************************************************

package com.example.onenoteservicecreatepageexample;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.URL;
import java.text.MessageFormat;

import javax.net.ssl.HttpsURLConnection;

import org.json.JSONException;
import org.json.JSONObject;

import android.os.AsyncTask;

/**
 * Sends a request to refresh the access token using the refresh token
 * Parses the JSON response received and returns as a result the new access token, the new refresh token and the expiration time
 * @author machandw
 *
 */
public class SendRefreshTokenAsyncTask extends AsyncTask<String, Void, Object[]> {
  
  //Properties for refreshing the access token (only applicable when the application uses the wl.offline_access wl.signin scopes)
  private final String TOKEN_REFRESH_REQUEST_BODY = "client_id={0}&redirect_uri={1}&grant_type=refresh_token&refresh_token={2}";
  private final String MSA_TOKEN_REFRESH_URL = "https://login.live.com/oauth20_token.srf";
  private final String TOKEN_REFRESH_CONTENT_TYPE = "application/x-www-form-urlencoded";
  private final String TOKEN_REFRESH_REDIRECT_URL = "https://login.live.com/oauth20_desktop.srf";

  protected Object[] doInBackground(String... params) {
    try {
      return attemptRefreshAccessToken(params[0]);
    }
    catch(Exception sendRefreshTokenException) {
      sendRefreshTokenException.printStackTrace();
    }
    return null;
  }
  
  @Override
  protected void onPostExecute(Object[] response) {
    super.onPostExecute(response);
  }

  private Object[] attemptRefreshAccessToken(String refreshToken) throws Exception {
    /**
     * A new connection to the endpoint that processes requests for refreshing the access token
     */
    HttpsURLConnection refreshTokenConnection = (HttpsURLConnection) (new URL(MSA_TOKEN_REFRESH_URL)).openConnection();
    refreshTokenConnection.setDoOutput(true);
    refreshTokenConnection.setRequestMethod("POST");
    refreshTokenConnection.setDoInput(true);
    refreshTokenConnection.setRequestProperty("Content-Type", TOKEN_REFRESH_CONTENT_TYPE);
    refreshTokenConnection.connect();
    OutputStream refreshTokenRequestStream = null;
    try {  
      refreshTokenRequestStream = refreshTokenConnection.getOutputStream();
      String requestBody = MessageFormat.format(TOKEN_REFRESH_REQUEST_BODY, Constants.CLIENTID, TOKEN_REFRESH_REDIRECT_URL, refreshToken);
      refreshTokenRequestStream.write(requestBody.getBytes());
      refreshTokenRequestStream.flush();
    }
    finally {
      if(refreshTokenRequestStream != null) {
        refreshTokenRequestStream.close();
      }
    }
    if(refreshTokenConnection.getResponseCode() == 200) {
      return parseRefreshTokenResponse(refreshTokenConnection);
    }
    else {
      throw new Exception("The attempt to refresh the access token failed");
    }
  }

  private Object[] parseRefreshTokenResponse(HttpsURLConnection refreshTokenConnection) throws IOException, JSONException {
    BufferedReader refreshTokenResponseReader = null;
    try {
      refreshTokenResponseReader = new BufferedReader(new InputStreamReader(refreshTokenConnection.getInputStream()));
      String temporary = null;
      StringBuffer response = new StringBuffer();
      while((temporary = refreshTokenResponseReader.readLine()) != null) {
        response.append(temporary);
        response.append("\n");
      }
      JSONObject refreshTokenResponse = new JSONObject(response.toString());
      Object[] refreshTokenResult = new Object[3];
      refreshTokenResult[0] = (String) refreshTokenResponse.get("access_token");
      refreshTokenResult[1] = (String) refreshTokenResponse.get("refresh_token");
      refreshTokenResult[2] = (Integer) refreshTokenResponse.get("expires_in");
      return refreshTokenResult;
    }
    finally {
      if(refreshTokenResponseReader != null) {
        refreshTokenResponseReader.close();
      }
    }
  }

}

Java Source Code List

• Back to Development/api  ↑