public static final String SSO = "http://10.78.75.118:8080/SSOServer";
    public static final String SSO_SERVICE_URL = "http://10.78.75.118:8080/SSOServer/SsoServlet";
    public static final String COOKIE_NAME = "SSO_COOKIE";

HttpServletRequest request = (HttpServletRequest) sr;
HttpServletResponse response = (HttpServletResponse) resp;
String uri = request.getRequestURI();
String url = request.getRequestURL().toString();
HttpSession session = request.getSession();
       
        Cookie[] diskCookies = request.getCookies();
        String w3 = "";
       
if (diskCookies != null) {
for (int i = 0; i < diskCookies.length; i++) {
if (diskCookies[i].getName().equals(COOKIE_NAME)) {
w3 = diskCookies[i].getValue();
break;
}
}
if (!"".equals(w3)) {
if (uri.endsWith("login.jsp")
|| request.getSession().getAttribute(W3) != null) {
fc.doFilter(sr, resp);
} else {
logon(session, w3, request.getRemoteAddr());
request.getRequestDispatcher(LOGIN + url).forward(
request, response);
}
} else {
session.invalidate();
forwordSso(request, response, session);
}
} else {
forwordSso(request, response, session);
}



public void forwordSso(HttpServletRequest request,
HttpServletResponse response, HttpSession session)
throws IOException, ServletException {
//String random = storeParams(request, session);
String redirect = SSO + "?Request=" + request.getRequestURL();
response.sendRedirect(redirect);
}