修改购买mixin

lib/common/services/database/database.dart

@@ -36,7 +36,9 @@ const typeConverters = <Type>[
 @TypeConverters(typeConverters)
 abstract class AppDatabase extends FloorDatabase {
   OrderDao get getOrderDao;
-  ProductDao get getProductDao;
+  CanteenSpuDao get getCanteenSpuDao;
+  SupermarketSkuDao get getSupermarketSkuDao;
+  SupermarketSpuDao get getSupermarketSpuDao;
   ShopCardDao get getShopCardDao;
   ClassifyDao get getClassifyDao;
   PrintHistoryDao get getPrintHistoryDao;