处理空字符串的问题

eladmin-system/src/main/java/cn/ysk/cashier/dto/product/StockQueryDto.java

@@ -18,6 +18,12 @@ public class StockQueryDto {
         }
     }
 
+    public void setCategoryId(String categoryId) {
+        if (StringUtils.isNotBlank(categoryId)) {
+            this.categoryId = categoryId;
+        }
+    }
+
     public void setShopId(String shopId) {
         if (StringUtils.isNotBlank(shopId) && !shopId.equals("1")) {
             this.shopId = shopId;