Form Based Authentication

[carina caoor]

I have a login page with username and password fields whenever user enters wrong password i want to display an alert message, when i use form based authentication on error it goes to fail_login.html but i dont want that action to take place i want an alert and along with that it should display the index.html again.Can anybody suggest me how to do this .

[code]

<form-login-page>/index.html</form-login-page>
<form-error-page>/fail_login.html</form-error-page>

[Seetharaman Venkatasamy]

Hi,

then, you can validate in servlet itself. why you want to go form based authentication?

[carina caoor]

yeah for that i did write a servlet, but my servlet is redirecting back to the login.html page, its not giving me the alert.

[code]
if(username.equals(loginname) && password.equals(pword))
{
session.setAttribute("UserName",username); response.sendRedirect("src/jsp/second.jsp");
}
else
{
response.sendRedirect("login.html");

}

here in else i can either give alert or redirect back to login.html but how do i get both, any suggestions please.
[ September 24, 2008: Message edited by: ruquia tabassum ]

[Sagar Rohankar]

Originally posted by ruquia tabassum:

here in else i can either give alert or redirect back to login.html but how do i get both, any suggestions please.

Alert , you means a JavaScript alert . If thats your need then How come a response from servlet execute those Client side javascript alert !

May be you can simply show a line of text with error message stating "Invalid User Name OR Password !" , for that , your Login Action Servlet looks like this ,

if(username.equals(loginname) && password.equals(pword))
{
session.setAttribute("UserName",username); response.sendRedirect("src/jsp/second.jsp");
}
else
{
[B]request.setAttribute("LOGIN_FAILED", "error message");[/B]
response.sendRedirect("login.html");
 
}

and on jsp page ,

<% if(request.getAttribute("LOGIN_FAILED") == null) 
   {
          // print error
   } 
%>;

I hope that's solve your problem . Now still you want that alert to be shown on wrong user id and password , then I suggest go for AJAX !

[Seetharaman Venkatasamy]

Originally posted by Sagar Rohankar:



jsp page ,

<% if(request.getAttribute("LOGIN_FAILED") [B]==[/B] null) 
   {
          // print error
   } 
%>;

you have to give !=

[Sagar Rohankar]

How can I miss that , anyways, Thanks seetharaman

[Seetharaman Venkatasamy]

you are welcome sagar