writeJsonResponse(HttpServletResponse.SC_BAD_REQUEST, escapeJsonKeyValue(MESSAGE_FIELD, "Referer is invalid."));
            return;
        }

        final RoleQueryHelper roleQueryHelper = ComponentUtil.getRoleQueryHelper();
        final SearchHelper searchHelper = ComponentUtil.getSearchHelper();

        final StringBuilder buf = new StringBuilder(255);
        try {

        RoleQueryHelper roleQueryHelper = new RoleQueryHelper();
        PermissionHelper permissionHelper = new PermissionHelper();

        ComponentUtil.register(systemHelper, "systemHelper");
        ComponentUtil.register(virtualHostHelper, "virtualHostHelper");
        ComponentUtil.register(keyMatchHelper, "keyMatchHelper");
        ComponentUtil.register(roleQueryHelper, "roleQueryHelper");