Your comments on examples and documentation are heeded, it just takes time. There is a lot of good stuff already though:

http://getahead.ltd.uk/dwr/documentation.html

We've just been discussing jsp tags on the mailing list and everyone agreed that we should not add them to DWR. We took a look at AjaxTags and decided that with the exception of the suggest tag, DWR already had a DWRUtil function to do the same thing or that we didn't want to include an equivalent anyway.

We like it that DWR has a fairly crisp definition of what it does, so it sticks to the mantra "Do one thing and do it well".

Unless your app is trivial you will be needing Javascript, so there is a good arguement that says "keep all in Javascript". The coding cost of a DWRUtil.setValues() call is no greater than a JSP tag that does the same thing, but it is a lot more versatile because it doesn't restrict your choice of view technology.

The problem seems to be that you don't have a Spring factory configured for use with DWR. Have you seen the spring docs on the DWR site?.