I’ve had the question several times about how to install a web application at the root of GlassFish (the use-case being probably to put into production an application on an intranet). Well, it’s really as simple as deploying your application with a "/" web context which can be done using the web Admin console (set the “Context Root:” field to "/") or the command line :
% asadmin deploy --contextroot "/" your-webapp.war
or making sure the sun-web.xml deployment descriptor contains a context-root element set to /.
The alternate solution is to use the notion of default web module for a given virtual server just like the web admin console is the default for port 4848.
Change the HTTP listen port to default 80 (with appropriate privileges on Unix) and you’re off to the simplest possible URL for your users.
Bistro! 2.0 