[edwinnathaniel]

JSP is just a tiny part of the whole stack no? You're free to develop single-page app using whatever your choice of JS frameworks.

I believe any Spring view plumbering can process several java-based templating languages (Velocity, JSP, JSF, etc).

You did mentioned Spring but in the same breadth with Servlet+JSP which makes me wonder if you're just using Spring-core and not the more modern stuff.

Keep in mind that there's now "flow" based solution in .NET world. "Flow", while it is not the best choice for the whole presentation stack, has it values for developing wizard-like/shopping cart section of your app.