as far as i know there is no deploytool for jboss.
I use xdoclet to deploy my applications and it works great. But it takes some time to get familiar with it.
The great benefit of xdoclet in combination with ant is that you can automate the deployment. So if you make changes to your beans, you can redeploy them fast and easy.
XDoclet also verifys the xml documents and jboss throws an exception if something is not conform to the ejb-specification.