How to redirect to login page if not logged in

[div123]

hi,

i have a tomcat web application and it is working properly. i have only javascript and jsp but if user types any url of any jsp without login its displaying that page for that i written the code like this in jsp.... but its not working........ so any one please help me...........

the code is

<% if(null == session.getAttribute("username")){
response.sendRedirect("./jsp/logout.jsp");
}else { %>
<a href="../jsp/useradmin.jsp?">Add User </a> <%} %>

this is not redirecting to login page if i entered url useradmin page directly without login. any one please tell me sollution..

[keang]

Have you tried printing the value returned by session.getAttribute("username") to the screen to see what it is returning.

[pollostar]

I know in .net how would this happen but dnt know in java.

[javinpaul]

have you tried spring security ? it has such feature out of box.