Cookies Visit Counter

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Cookies Visit Counter

Write a Servlet which displays a message and also displays how many times the message has been displayed (how many times the page has been visited). 
  
Hint: Create a file which will update the counter each and every time the page is being loaded. 

(Making use of cookies)

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Step 1: Create VisitPage.Java using Packages Concepts for servlet which can handle counter variable to keep a track on visits.

package pack5;

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class VisitPage extends HttpServlet
{
public void doGet(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException
{
response.setContentType("text/html");
PrintWriter out = response.getWriter();
String cookieName = "Visit";
Cookie[] cookies = request.getCookies();
if(cookies == null)
{
out.println("Wellcome New User<br>");
Cookie c = new Cookie("Visit","0");
c.setMaxAge(60*60*24*365);
response.addCookie(c);
}
if(cookies != null)
{
for(int i=0;i<cookies.length;i++)
{
Cookie c = cookies[i];
if(cookieName.equals(c.getName()))
{
out.println("Wellcome Back Again..!!<br>");
int count = Integer.parseInt(c.getValue());
out.println("Count :" + ++count);
Cookie repeat = new Cookie("Visit",String.valueOf(count));
repeat.setMaxAge(60*60*24*365);
response.addCookie(repeat);
}
}
}
}
}

Step 2: Create WEB.XML file for Mapping Servlet file.

<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app>
<servlet>
      <servlet-name>CookiesVisitCounter</servlet-name>
      <servlet-class>pack5.VisitPage</servlet-class>
</servlet>  
<servlet-mapping>
        <servlet-name>CookiesVisitCounter</servlet-name>
        <url-pattern>/VisitPage</url-pattern>
</servlet-mapping>
</web-app>

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