u : ${menuItem.children}">
                                <a class="back-menu-item" rel="external nofollow"
                                   th:target="${childMenu.spec.target?.value}" th:href="@{${childMenu.status.href}}">
                                    <!-- icon 预留 -->
                                    <img th:if="${!#strings.isEmpty(#annotations.getOrDefault(childMenu, 'icon', ''))}"
                                         class="back-menu-item-icon"
                                       