I modified the ActionExceptionHandler I reported on earlier. Now it uses the already built-in functionality of the Struts' ExceptionHandler and also only reports messages that are distinct. That is, it checks the next exception's message to see if the current message is a duplicate. Probably best to let the code speak for itself.
I'm not expecting anyone to care - I just want to make sure the code I'm using is accurately reflected here (rather than the initial, untested prototype).