问题
I am trying to integrate google+ login with my website using javascript sdk, Though I am able to validate the user I need to obtain an access token on successful signin which I pass to the server to obtain further information. I went through the documentation in google developer console in this link: Google Sign-In for Websites
in that is could see a method GoogleUser.getAuthResponse() whose response object must contain an access_token.
However in my response object I couldn't find the access_token , but all the remaining key were present. I am not sure if the documentation is outdated.
Please help with me a solution this problem.
来源：https://stackoverflow.com/questions/32877115/unable-to-obtain-access-token-google-signin-using-auth2-javascript