I'm using Spring Security and I would like to use another site as one of my authentication providers. I have a basic form based login on my site. I want to have a link on my site that takes the user to an external site where they will login and that external site will then post a xml response back to me with data that I can verify to see if there was a successful login. Any help would be greatly appreciated!
How do you integrate that flow into Spring Security?
Once I get the response back, how would I auto log user on?