When I first encountered the creatively named JSPWiki two years ago, I thought it strange that the server relies on the file system for storing its content. JSPWiki is very extensible and I found a simple database page provider plug-in and used it with some modifications to bring it up to the then-current version of JSPWiki.
Later I did a major overhaul of the code and forked it into a generic JDBC Provider. A few folks have contributed comments, but I don’t get the sense of a big demand for SQL-based page stores for JSPWiki.
I’ve just updated the code for the now-current JSPWiki 2.2.8 and provided a jar file for easier installation. I’m hoping it will improve the stability of my local wiki which hangs every few days using the original database provider plug-in.
We moved to http://moinmoin.wikiwikiweb.de/ The syntax is just a little more difficult than JSPWiki’s but it allows more expressability. The conversion didn’t seem very easy and some links were broken.
I hope your wiki enables you to post directly to WordPress. If not, and you are running OS X (10.3.9 or greater). I would suggest a personal content manager like Near-Time Current: http://www.near-time.com/PRODUCTS/current/index.htm.