ss="breadcrumb-item"><a th:href="@{/toAdminMain}">主页</a></li>
                    <li class="breadcrumb-item"><a th:href="@{/equipment/selEquipment}">器材管理</a></li>
                    <li class="breadcrumb-item active">添加器材</li>
                </ol>

                <div class="card mb-4">

                    <form th:action="@{/equipment/addEquipment}" method="post" name="addForm"
                          onsubmit="return beforeSubmit(this)">
                        <table class="tab