Let's say that you have developed the persistence layer of your application using Roo. Now, you want to expose the CRUD operations and dynamic finder methods defined in the Roo-generated JPA entities to the outside world via a RESTful interface.
Roo supports exposing CRUD operations and dynamic finders of JPA entities via RESTful interfaces that use JSON documents for exchanging data. As JSON is used by Roo-generated RESTful interfaces, you can modify JSPX pages of the Roo-generated Spring Web MVC application to use Ajax to interact with these RESTful interfaces.
Roo provides two commands for adding JSON support to existing classes in the Roo project:
add: Adds JSON support to the class specified ...