Rick Hightower solicited comments from his LinkedIn network with the question, which Java web framework will “win,” or at least place, in 2009. Spend too much time with the wrong framework, and you won’t be able to get a job.. Spend time with the right one, and you will be able to command $$$ as a project smokejumper, at least for the next 9 – 12 months.
http://java.dzone.com/news/what-serverside-java-web-framework-will-be-next-2008