CODEWITHSUNDEEP
google-app-enginegoogle-drive-api
Vik
Vik

Reputation: 9289

refreshToken is null

I used DREdit app's Oauth code to get accessToken and refreshToken for my app and i am getting the accessToken but refreshToken is coming null always.

I tried to print the values in the code which comes like below

authorization URL:https://accounts.google.com/o/oauth2/auth?access_type=offline&approval_prompt=force&client_id=651991573332.apps.googleusercontent.com&redirect_uri=http://www.sakshum.org/GoogleOauth&response_type=code&scope=https://www.googleapis.com/auth/drive.file%20https://www.googleapis.com/auth/userinfo.email%20https://www.googleapis.com/auth/userinfo.profile

This code already has access_type=offline which I found not having in the url was the cause in some cases. Please advise what else could be wrong here.

The log prints as follows on appEngine

[s~sakshumweb-hrd/3.368699522239285323].<stdout>: Code:4/XQ1sR1Pu5VHDqGbG9iJO10bXVCCE.Qn-L1XwrBVYaEnp6UAPFm0EmSoCXfwI

W 2013-07-10 20:20:16.294
com.google.api.client.googleapis.services.AbstractGoogleClient <init>: Application name is not set. Call Builder#setApplicationName.
I 2013-07-10 20:20:16.536
[s~sakshumweb-hrd/3.368699522239285323].<stdout>: id:113470899999229420779

I 2013-07-10 20:20:17.936
[s~sakshumweb-hrd/3.368699522239285323].<stdout>: access token:ya29.AHES6ZSP7MXaaUhMz4RO7Jm3Zkh_s1zUxJyzW_6IvfADaQ

I 2013-07-10 20:20:17.936
[s~sakshumweb-hrd/3.368699522239285323].<stdout>: refresh token:null

Upvotes: 2

Views: 1033

Answers (2)

grep
grep

Reputation: 5623

After your link you get authorization code. For instance:

https://accounts.google.com/o/oauth2/auth?access_type=offline
&approval_prompt=auto
&client_id=[your id]
&redirect_uri=[url]
&response_type=code
&scope=[access scopes]
&state=/profile

then if in future you are going to have access to drive you need refresh token (you can every time request auth token - redirecting to google and etc... but it's not good way. after first usage, you should save Credentials in Database with User UID (for instance, it may be mail). So if you need to have access to the drive in the feature you do this:

static Credential exchangeCode(String authorizationCode)
      throws CodeExchangeException {
    try {
      GoogleAuthorizationCodeFlow flow = getFlow();
      GoogleTokenResponse response =
          flow.newTokenRequest(authorizationCode).setRedirectUri(REDIRECT_URI).execute();
      return flow.createAndStoreCredential(response, null);
    } catch (IOException e) {
      System.err.println("An error occurred: " + e);
      throw new CodeExchangeException(null);
    }
  }

As I guess you also want to get url of the file which is in the Google Drive. when you get files - thee the documentation, then you will find download methids in com.google.api.services.drive.model.File object. read documentations

Upvotes: 0

Steve Bazyl
Steve Bazyl

Reputation: 11672

Refresh tokens are only issued on the initial authorization (whenever the consent screen is shown.) If you find you're in a state where you don't have a saved refresh token for a user, you can ask for reauthorization with the added query parameter prompt=consent. The user will be asked to re-authorize and a new refresh token will be generated.

Upvotes: 2

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