thymeleaf th:text拼接及循环

mmap.put("startEndSizes", purchaseDetail.getStartEndSizeList());

<div>
    <div class="form-group" th:each="startEndSize:${startEndSizes}">
        <label class="col-sm-3 control-label" th:text="'起始尺寸-'+${startEndSize.sizeName}">：</label>
        <div class="col-sm-8">
           <!-- <label  th:text="${startEndSize.sizeName}"></label>-->
            <input name="purchaseNum" th:value="${startEndSize.size}"  class="form-control" type="text" >
        </div>
    </div>
</div>