%@ taglib prefix='c' uri='http://java.sun.com/jstl/core' %> <%@ page import="org.springframework.security.core.context.SecurityContextHolder" %> <%@ page import="org.springframework.security.core.Authentication" %> <%@ page import="org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter" %> <%@ page import="org.springframework.security.core.AuthenticationException" %>