Hi Marco, I don't know why, but It seems that the xdoclet plugin does not work very well for struts. I send a post on 2006-06-12 19:06 related to xdoclet and struts http://www.nabble.com/-M2--Struts-and-XDoclet-tf1775233.html#a4832525
You will find my pom in the post. It still found any solution for my problem. If you have an idea... Hope this helps, Rémy