问题
Is it possible to retrieve a Google account profile image like a Gravatar image?
I'm thinking it would be very handy to make a failover to Google image, if a gravatar is not found.
回答1:
If you're able to get the Google user_id, you can retrieve the Google+ image.
Unfortunately, there doesn't appear to be an easy way to get the user_id from an email address.
来源：https://stackoverflow.com/questions/20603424/google-account-image-from-email