import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class LoginServlet extends HttpServlet {
private void sendLoginForm(HttpServletResponse response,
boolean withErrorMessage)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("");
out.println("");
out.println("Login");
out.println("");
out.println("");
if (withErrorMessage)
out.println("Login failed. Please try again.
");
out.println("
");
out.println("
Please enter your user name and password.");
out.println("
");
out.println("");
out.println("");
}
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
sendLoginForm(response, false);
}
public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
String userName = request.getParameter("userName");
String password = request.getParameter("password");
if (userName!=null && password!=null &&
userName.equals("jamesb") && password.equals("007")) {
RequestDispatcher rd = request.getRequestDispatcher("WelcomeServlet");
rd.forward(request, response);
}
else {
sendLoginForm(response, true);
}
}
}