The best way to write jSON APIs on Google App Engine… here is a solution to the problem.
The best way to write jSON APIs on Google App Engine
I want to create a Java web application on Google AppEngine.
What is the best way to develop a REST jSON API?
Do I have to write a servlet from scratch to manage jSON processing, or have a library or something like SOAP to support Web services?
Solution
No need to write servlets from scratch, using JAX RS is easy and simple
http://tugdualgrall.blogspot.com/2010/02/create-and-deploy-jax-rs-rest-service.html