We are looking to host a Java Domain Model (written using DDD) inside a web application. Ideally I would like to support RESTful resources and requests, having a single site
Spring 3 is not quite ready yet, but the current milestone build (M3) is stable enough to use for real. We're using its REST support in a production application already. It's pretty goodm, and integrates very nicely with Spring MVC. It's not JAX-RS compliant, but I don't see that as a problem.