com.dropbox.core.DbxException$BadRequest: {"error_description": "code doesn't exist or has expir ...

Aurelian R.

ed", "error": "invalid_grant"}

I uploaded successfully few files using the Dropbox API. But now I am receiving this message:

com.dropbox.core.DbxException$BadRequest: {"error_description": "code doesn't exist or has expired", "error": "invalid_grant"}

for this code

  final String APP_KEY = "aaaaaaaaaaaaaaaa";
  final String APP_SECRET = "sssssssssssssss";

  DbxAppInfo appInfo = new DbxAppInfo(APP_KEY, APP_SECRET);

  DbxRequestConfig config = new DbxRequestConfig("JavaTutorial/1.0",
              Locale.getDefault().toString());
  DbxWebAuthNoRedirect webAuth = new DbxWebAuthNoRedirect(config, appInfo);
  // Have the user sign in and authorize your app.
  String authorizeUrl = webAuth.start();
  System.out.println("1. Go to: " + authorizeUrl);
  System.out.println("2. Click \"Allow\" (you might have to log in first)");
  System.out.println("3. Copy the authorization code.");
  String code = "codexxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";


  // Once the user has delivered the authorization code to our app, we can
  // exchange that code for an access token via finish:
  DbxAuthFinish authFinish = webAuth.finish(code);
  String accessToken = authFinish.accessToken;

  DbxClient client = new DbxClient(config, accessToken);
  System.out.println("Linked account: "
              + client.getAccountInfo().displayName);

Greg-DB

You're getting this on the webAuth.finish line, right? This error indicates that the authorization code you're using is invalid or expired. (These authorization codes currently expire after five minutes.)

You should use the authorization only once, immediately after receiving it. After that, you can store and re-use the access token instead, without processing the authorization flow again.