Filter filter = (Filter) SpringUtil.getBean("zkFilterChainProxy");
if (filter != null) {
ServletRequest request = (ServletRequest) exec.getNativeRequest();
ServletResponse response = (ServletResponse) exec.getNativeResponse();
ServletResponse resp = BufferedResponse.getInstance(response, new NullWriter());
try {
filter.doFilter(request, resp, new NullFilterChain());
} catch(Exception ex1) {
throw UiException.Aide.wrap(ex1); //should never occur
}