Redirect into two different page after login.jsp according user category

I have created a login.开发者_开发知识库jsp with some login username and password. Users are categorized into A and B. Then I have to redirect each user according to the user category. I also need to retrieve the username in the next page. My form in login.jsp page is something like this:

<form method="POST" action='<%= response.encodeURL("j_security_check") %>'

Do I have to use javax.servlet.Filter? what should be added in web.xml?

Anyone had an idea how to do it?

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Just use a if condition in servlet like this

// Get the user type
if (userType == Type1){
response.sendRedirect("Page1.jsp");
}else{
response.sendRedirect("Page2.jsp");
}