Is there any OpenID implementation I开发者_运维技巧 could use in my GAE (Google App Engine) Project?
I think it is now supported by GAE sdk http://code.google.com/intl/nl-NL/appengine/articles/openid.html
One option is to use RPX which allows your application to accept OpenID from multiple sources without you having to do the hard work.
I have used it for my GAE app, even jusing GWT and it works well.
rpxnow.com
I can tell you that openid4java does not work with GAE since GAE excludes certain redirects. See: link text
Combine Spring security, OpenID4java and Step2. It seems to work. I haven't deployed it to appspot, but it worked on Eclipse + GAE.
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