So the thing to remember is that Spring is not an application server. I'm not going to go over why WebSphere is better than other application Servers - you would want to refer to the IBM Marketing material and competitive product office material for that. Spring is simply a framework that works within application servers. So if you want to use Spring, go ahead. What we describe is how to do RESTful development in a completely integrated environment using the
JEE standards. If that interests you then great, but if not, then I'm not going to try to convince you to give up what you're doing.
Just FYI - It's NOT NICE to troll an author...
Kyle