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Installing tomcat is actually very quick and easy. Assuming you already have the JDK installed, this will only take a few minutes. In my years of experience as a sysadmin I've had to install tomcat a billion times (well maybe not that many, but quite a few) and I actually have a script which does it for me. In this article, I will go over the few easy steps to get tomcat up and running.
Whether your site is in some directory and you want to map a relative url to some non-relative directory or you have a url with a port and would like to hide that port, then modproxy can do it.