As we know our most of the projects in Java is run using Tomacat application server. Sometimes we also need some web server like apache2 for other functionalities like wordpress integration.
In such situation our project need both of the server to run the application.
We can connect tomcat 7 and apache2 using mod_jk connector. Here is the code to integrate it:

First we need to insatll apache 2 

sudo apt-get install apache2
sudo apt-get install tomcat7
sudo apt-get install tomcat7-admin

Now install mod_jk using code:

sudo apt-get install libapache2-mod-jk

Now go to tomcat directory and open file server.xml

Uncomment line

<Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />

Now create a properties file in apache2

sudo vim /etc/apache2/workers.properties

Write the code:

Paste the following text:

# Define 1 real worker using ajp13
worker.list=worker
# Set properties for worker (ajp13)
worker.worker.type=ajp13
worker.worker.host=localhost
worker.worker.port=8009

Now to configure the URL Apache should pass through the Tomcat, create file 000-defaultat following location

sudo vim /etc/apache2/sites-enabled/000-default

And following lines in the file:

<VirtualHost *:80>
.......................................
.......................................
JkMount /tomcat-demo* worker1
</VirtualHost *:80>

Restart both server.