Adv Java Program : Write a SERVLET program which counts how many times a user has visited a web page. If user is visiting the page for the first time, display a welcome message. If the user is revisiting the page, display the number of times visited. (Use Cookie)

 

Adv Java Program : 

Write a SERVLET program which counts how many times a user has visited a web page. If user is visiting the page for the first time, display a welcome message. If the user is revisiting the page, display the number of times visited. (Use Cookie)

VisitServlet.java

        import java.io.*;

        import javax.servlet.*;

        import javax.servlet.http.*;

public class VisitServlet extends HttpServlet

{

    static int i=1;

    public void doGet(HttpServletRequest request,HttpServletResponse response)

            throws IOException,ServletException

    {

        response.setContentType("text/html");

        PrintWriter out=response.getWriter();

        String k=String.valueOf(i);

        Cookie c=new Cookie("visit",k);

        response.addCookie(c);

        int j=Integer.parseInt(c.getValue());

        if(j==1)

        {

            out.println("Welcome to web page ");

        }

        else        {

            out.println("You are visited at "+i+" times");

        }

        i++;

    }

}

Web.xml

<?xml version="1.0" encoding="ISO-8859-1"?>

<web-app>

<servlet>

<servlet-name>VisitServlet</servlet-name>

<servlet-class>VisitServlet</servlet-class>

</servlet>

<servlet-mapping>

<servlet-name>VisitServlet</servlet-name>

<url-pattern>/VS</url-pattern>

</servlet-mapping>

</web-app>