AppEngine Java Google+ Signin missing gplus_id

Question

I'm trying to sign-in to G+ with java on Google AppEngine as explained here

In Step 8, the code gets gPlusId as follow

 String gPlusId = request.queryParams("gplus_id");

and this request should be coming from the ajax call in Step 6, which only sends authResult['code'] in the request, even the authResult doesn't have a parameter gplus_id

how then and where from this gplus_id comes ?!

Answer 1

Is your request getting authorized? If yest then have you checked that you turned on Google+ API for your GAE application from the below link.

https://console.developers.google.com/project/693420044823/apiui/api/plus