fix: 热销分组内容为空报错修复

src/main/java/com/chaozhanggui/system/cashierservice/service/ProductService.java

@@ -257,7 +257,12 @@ public class ProductService {
             //热销
             TbProductGroup hot = new TbProductGroup();
             hot.setName("热销");
-            List<TbProduct> hots = tbProductMapper.selectHot(shopId,proSets);
+            List<TbProduct> hots  = null;
+            if (proSets.isEmpty()) {
+                hots = new ArrayList<>();
+            }else {
+                hots = tbProductMapper.selectHot(shopId,proSets);
+            }
             hot.setProducts(handleDate(hots,true,1,false, shopInfo));
             groupList.add(0, hot);