There is no default mechanism for creating Rails-like scaffolding in the default distribution. You may be interesting in something like AppFuse, however, which can create a Struts 2 application (along with several other frameworks).
Of course, there's nothing stopping you from creating your own scaffolding mechanism, depending on your needs.
I agree. Here's the link: http://ej-technologies/jprofiler - if it wasn't for jprofiler, we would need to
run our stuff on 16 servers instead of 3.