I started using this:
http://www.grails.org/plugin/facebook-graph
And then I had to switch to:
http://www.janrain.com/products/engage
because I need more than just Facebook. However, none of them integrates directly with Spring Security. I was able to get it to work, but returning to the information returned by Facebook and associating it with a specific user, I will then manually log in using the Spring security mechanism. However, the solution is too much to answer here.
I planned to blog about it, but did not have time. If I do this, I will be sure and will contact him here. Sorry, I canβt help anymore. But the Facebook Graph plugin is a very good place to start.
Gregg source share