Q:

RESTful application on Google App Engine Java?

I would like to create a RESTful app on Google App Engine. I would like to provide XML and JSON services. I have briefly experimented with Restlet, Resteasy, and Jersey. I haven't had much success with any of them, other than some simple examples in Restlet.
Could you share your experiences creating a Restful web application on Google App Engine using Java or provide any insight on the aforementioned toolkits on GAE?
Thanks!
Edit (2009-07-25):
I have decided to use Restlet for the time being. It seems to work flawlessly so far. Please post any other insights/opinions you may have. What problems have you encountered? Have you successfully used Jersey/Restlet/Resteasy on GAE/J? If so, we want to hear about it!

A:

I'm happy to report that Restlet M3 works FLAWLESSLY on AppEngine 1.2.2. I have followed the "First steps" and "First resource" tutorials found http://restlet.com/technical-resources/restlet-framework/guide.
So, it seems to me that Restlet is the answer for your GAE/J Restful applications.

A:

I'm using Jersey on GAE. Here is the link for those who are interested about setting it up: (I'm using GAE SDK v1.4.0):
http://tugdualgrall.blogspot.com/2010/02/create-and-deploy-jax-rs-rest-service.html

A:

I am going to begin exploring this as well, but haven't started yet.  I did find this framework, that says it should work, but like I said haven't tried it yet.  
http://wiki.restlet.org/docs_1.2/13-restlet/275-restlet/252-restlet.html
If you get it working, or manage to get one of the above suggestions working, update everyone as I am sure there is interest in this.

