Index.html:-
<!DOCTYPE html>
<html>
<head>
<title>Login</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<body>
<form method="post" action="login">
Username: <input type="text" name="username"><br><br>
Password: <input type="password" name="password"><br><br>
<input type="submit" value="Login">
</form>
</body>
</html>
ErrorPage.html:-
<!DOCTYPE html>
<html>
<head>
<title>Error Page</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<body>
<h2>Authentication Failure</h2>
</body>
</html>
Web.xml:-
<?xml version="1.0" encoding="UTF-8"?>
<web-app >
<servlet>
<servlet-name>LoginServlet</servlet-name>
<servlet-class>LoginClass</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>LoginServlet</servlet-name>
<url-pattern>/login</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>UserProfileServlet</servlet-name>
<servlet-class>UserProfile</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>UserProfileServlet</servlet-name>
<url-pattern>/WelcomeUser</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
</web-app>
LoginClass.java:-
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class LoginClass extends HttpServlet{
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException,IOException{
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try{
String username = request.getParameter("username");
String password = request.getParameter("password");
if(username.equals("hanu")&& password.equals("hanu123456"))
{
RequestDispatcher rd = request.getRequestDispatcher("/WelcomeUser");
rd.forward(request,response);
}
else
{
RequestDispatcher rd = request.getRequestDispatcher("/errorpage.html");
rd.forward(request,response);
}
}
finally
{
out.close();
}
}
}
UserProfile.java:-
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class UserProfile extends HttpServlet{
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException,IOException{
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try{
String username = request.getParameter("username");
String password = request.getParameter("password");
out.println("Username > "+username);
out.println("<br>");
out.println("Password > "+password);
}
finally{
out.close();
}
}
}
