diff --git a/yudao-module-mall/yudao-module-product/src/main/java/cn/iocoder/yudao/module/product/dal/mysql/spu/ProductSpuMapper.java b/yudao-module-mall/yudao-module-product/src/main/java/cn/iocoder/yudao/module/product/dal/mysql/spu/ProductSpuMapper.java
index 40ec44d..b0eb2ea 100755
--- a/yudao-module-mall/yudao-module-product/src/main/java/cn/iocoder/yudao/module/product/dal/mysql/spu/ProductSpuMapper.java
+++ b/yudao-module-mall/yudao-module-product/src/main/java/cn/iocoder/yudao/module/product/dal/mysql/spu/ProductSpuMapper.java
@@ -76,14 +76,16 @@ public interface ProductSpuMapper extends BaseMapperX<ProductSpuDO> {
         query.eq(ProductSpuDO::getStatus, ProductSpuStatusEnum.ENABLE.getStatus());
 
         // 排序逻辑
+        // 排序方式（sortAsc）可能缺省或显式传 null（合法但参数不完整的组合），缺省按升序处理，避免拆箱 null 崩 500
+        Boolean sortAsc = pageReqVO.getSortAsc() != null ? pageReqVO.getSortAsc() : Boolean.TRUE;
         if (Objects.equals(pageReqVO.getSortField(), AppProductSpuPageReqVO.SORT_FIELD_SALES_COUNT)) {
             query.last(String.format(" ORDER BY (sales_count + virtual_sales_count) %s, sort DESC, id DESC",
-                    pageReqVO.getSortAsc() ? "ASC" : "DESC"));
+                    sortAsc ? "ASC" : "DESC"));
         } else if (Objects.equals(pageReqVO.getSortField(), AppProductSpuPageReqVO.SORT_FIELD_PRICE)) {
-            query.orderBy(true, pageReqVO.getSortAsc(), ProductSpuDO::getPrice)
+            query.orderBy(true, sortAsc, ProductSpuDO::getPrice)
                     .orderByDesc(ProductSpuDO::getSort).orderByDesc(ProductSpuDO::getId);
         } else if (Objects.equals(pageReqVO.getSortField(), AppProductSpuPageReqVO.SORT_FIELD_CREATE_TIME)) {
-            query.orderBy(true, pageReqVO.getSortAsc(), ProductSpuDO::getCreateTime)
+            query.orderBy(true, sortAsc, ProductSpuDO::getCreateTime)
                     .orderByDesc(ProductSpuDO::getSort).orderByDesc(ProductSpuDO::getId);
         } else {
             query.orderByDesc(ProductSpuDO::getSort).orderByDesc(ProductSpuDO::getId);