I have been using Apache with Jboss 6 and the mod_jk connector. When I attempted to configure Jboss 7 to support the same Apache connector, I followed the directions at https://docs.jboss.org/author/display/AS7/Apache+httpd .
After making the changes, jboss started with no errors.
When I attempted to use http://localhost/jbossTests rather than http://localhost:8080/jbossTests I was presented with a blank screen and no error messages in either the console window or the server.log file..