Assume that, if you have installed tomcat and Apache on that same server, do you like to redirect in tomcat web application behind a Apache server with port 80.

You can use the proxyName and proxyPort  on the element.

We can use mod_proxy module in apache server to forward requests for a particular web application,

To establish redirect that application you need to configure the following lines,

Open your apache-tomcat configuration file server.xml and add the below configure line,

#  vi  server.xml



<Connector port="8080" protocol="HTTP/1.1"

               connectionTimeout="20000"

               redirectPort="8443"

               proxyName="www.domainanme.com"

               proxyPort="80"/>

there are two directives in your httpd.conf file for each web application,
ProxyPass
ProxyPassReverse

open apache httpd.conf file 
 
# vi /usr/local/apache/conf/httpd.conf

You can use any one format,
 
ProxyPass / http://localhost:8080/
ProxyPassReverse / http://localhost:8080/

ProxyPass /application/ http://localhost:8080/
ProxyPassReverse /application/ http://localhost:8080/

or
 
ProxyPass /application http://www.domain.com:8080/application/
ProxyPassReverse /application http://www.domain.com:8080/application/

ProxyPass / http://www.domain.com:8080/application/
ProxyPassReverse / http://www.domain.com:8080/application/

Once updated your changes in both server configuration file restart the servers,