I'm trying to build a REST web service (server side) that will allow a partner system to connect/POST order information in JSON format. Should I use JAX RS (for example from JBOSS RESTEasy) or Spring MVC to build such a service? They both seem capable enough to accomplish the same thing as far as building a REST service is concerned.
Thank you!
Depends if you want to learn something new or go with what you already know.
If you already have experience with Spring MVC and want to get the work done quickly, then I'd suggest staying with Spring MVC. There are some neat enhancements to the REST features in Spring 3.1, including the ability to generate "end point documentation".
If, on the other hand, you are looking to expand your CV and/or enjoy learning new technologies, then give JAX RS a go. I haven't used it but it is a dedicated WS framework that would likely have any feature you'd require.
Of course, if you have experience with JAX RS but not Spring MVC, then the opposite applies :-)