.do, or similar)
It's simple to write a servlet to forward to an HTML or JSP file. In this case, a naming convention is often useful. For example, a URL ending in:
some/path/blah.domight be mapped internally by a servlet to a file:
..some/path/blah.htmlat some location in the app's source tree.
If you always use a servlet (or controller), then the underlying implementation is hidden from the browser. That's a good thing, since it leaves you completely free to change your mind later on, without needing to do extra work for existing bookmarked URLs.
If you choose not to use a servlet, and your URLs end in
.jsp, then, if you later change the implementation,
you'll need to decide what to do with obsolete links: