Redirecting to home page if user is already logged in [duplicate]

Answer 1

Make the login page/action check if the user is logged in, and redirect to the home page if logged in:

if (alreadyLoggedIn) {
    response.sendRedirect(response.encodeRedirectURL(request.getContextPath() + "/home"));
    return;
}

But you should probably not have a link to the login page in the first place if the user is already logged in.