public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
                    List<User> allUsers = userDao.findAll();
                    List<String> originList = new ArrayList<>();
                    HttpServletRequest requestToUse = (HttpServletRequest) request;
                    HttpServletResponse responseToUse = (HttpServletResponse) response;
                    System.out.println("Original:"+requestToUse.getServerName()+"?"+requestToUse.getQueryString());

                    String origin = requestToUse.getHeader("Origin");

                    String endPointUrl = requestToUse.getServerName() + "/getToken";
                    System.out.println("endPointUrl = " + endPointUrl);
                    System.out.println("origin = " + origin);
                    System.out.println("Application.APPLICATION_ENDPOINT = " + Application.APPLICATION_ENDPOINT);
        if (endPointUrl.startsWith(Application.APPLICATION_ENDPOINT + "/getToken")) {
                    System.out.println("Inside endPointUrlstartsWith");
                    allUsers.forEach(user -> originList.add(user.getDomainName()));
                    String username = requestToUse.getParameter("username");
                    System.out.println("username = " + username);
                    String password = requestToUse.getParameter("password");
                    System.out.println("password = " + password);
    //More verification---------------------
------------------------------------and add header
 responseToUse.addHeader("Access-Control-Allow-Origin", origin);
                responseToUse.addHeader("Access-Control-Allow-Methods","GET");
                responseToUse.addHeader("Access-Control-Allow-Headers","Origin, X-Requested-With, Content-Type, Accept");

    }
    chain.doFilter(requestToUse, responseToUse);