17. Develop a Servlet which looks for cookies for username and password, and forwards to a home.jsp in case the cookies are valid and forwards to login.jsp, in case the cookies are not found or the cookies are not valid
index.jsp
<html>
<head>
<title>EX-17</title>
<style>
.abc
{
background:#ababff;
position:absolute;
top:2in;
hieght:200px;
width:300px;
left:5in;
border-style:solid;
}
</style>
</head>
<body>
<div class="abc" id="f1">
<br>
<form method="POST" action="/Ex17/bipinrupadiya.blogspot.com">
<table align="center">
<tr>
<td>User Name : </td>
<td><input type="text" name="txtUsr"></td>
</tr>
<tr>
<td>Password :</td>
<td><input type="password" name="txtPwd"></td>
</tr>
<tr>
<td colspan=2 align=center>
<input type="checkbox" name="chkRM">
Remember Me
</td>
</tr>
<tr>
<td colspan=2 align=center>
<input type="submit" value="Login">
<input type="reset" value="Reset">
</td>
</tr>
</table>
</form>
</div>
</body>
</html>
home.jsp
<html>
<head>
<title>EX-17</title>
<style>
.abc
{
background:#ababff;
position:absolute;
top:2in;
hieght:200px;
width:300px;
left:5in;
border-style:solid;
}
</style>
</head>
<body>
<div class="abc" id="f1">
<br>
<center>
<h1>WELCOME
<br>
</div>
</body>
</html>
Ex17.java
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class Ex17 extends HttpServlet
{
public void doGet(HttpServletRequest request,HttpServletResponse response)throws IOException,ServletException
{
response.setContentType("text/html");
PrintWriter out = response.getWriter();
String usr = request.getParameter("txtUsr");
String pwd = request.getParameter("txtPwd");
String RM = request.getParameter("chkRM");
if (RM != null)
{
Cookie cookie = new Cookie(usr,pwd);
cookie.setMaxAge(60*60*24*365);// 1 Year
response.addCookie(cookie);
}
Cookie[] cookies = request.getCookies();
if (cookies != null)
{
//Cookie("bipin","rupadiya");
//Cookie(usr,pwd);
String cPwd="x";
for(int i=0; i<cookies.length; i++) //user check
{
Cookie cookie = cookies[i];
if (usr.equals(cookie.getName()))
{
cPwd=cookie.getValue();
break;
}
}
if(cPwd.equals(pwd))//password check
{
response.sendRedirect("home.jsp");
}
else
{
//out.println("<script>alert('User Name or Password is incorrect. Please Try Again');location.href='login.jsp';</script>");
response.sendRedirect("index.jsp");
}
}
}
public void doPost(HttpServletRequest request,HttpServletResponse response)throws IOException,ServletException
{
doGet(request,response);
}
}
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