Program to demonstrate session management
using cookies
<!-- Cookie example -->
<html>
<head>
<title>Cookies</title>
<style>
label
{
font-family:vivaldi;
font-size:x-large;
letter-spacing:2px;
line-height:40px;
font-weight:bold;
}
</style>
</head>
<body>
<form method="Post"
action="http://localhost:8088/anu/formdata">
<center>
<h2>Cookies</h2></br>
<label>User
Name </label>
<input type="text"
Name="UN" tabindex=1/>
</br>
</br>
<button type="submit"
>Click me!!! </button>
</center>
</form>
</body>
</html>
// Cookie Servlet 1 – receives request and
sets the cookie in the response
import
java.io.*;
import
javax.servlet.*;
import
javax.servlet.http.*;
public class CookieServlet1 extends HttpServlet
{
public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException,
IOException
{
//setting the content type
res.setContentType("text/html");
//create the stream to write the data
PrintWriter pw=res.getWriter();
// Read username from request object
String N = req.getParameter("UN");
//creating cookie object
Cookie C = new Cookie("usr",N);
//adding cookie in the response
res.addCookie(C);
//creating response page
pw.println("<html><body>");
pw.println("<center>");
pw.println("<h2>Welcome to Web
Technology</h2>");
pw.println("<form method='Get'
action='CookieServlet2'>");
pw.println("<br/><input
type='submit' value='Welcome'>");
pw.println("</form>");
pw.println("</center>");
pw.println("</body></html>");
pw.close();
}
}
// Cookie Servlet 2 – reads the cookie and
sends a welcome message to the user
import
java.io.*;
import
javax.servlet.*;
import
javax.servlet.http.*;
public class CookieServlet2 extends HttpServlet
{
public void doGet(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException
{
//setting the content type
res.setContentType("text/html");
//create
the stream to write the data
PrintWriter pw=res.getWriter();
Cookie C[]=req.getCookies();
pw.println("<html><body>");
pw.println("<center>");
pw.println("<h2>Hello
"+C[0].getValue());
pw.println("</h2></center>");
pw.println("</body></html>");
pw.close();
}
}
