bugfix

src/main/resources/mappings/modules/order/ShopOrderMapper.xml

@@ -19,7 +19,7 @@
 			a.townID  AS townID,
 			a.productAmount  AS productAmount,
 			a.discountAmount AS  discountAmount,
-			a.accountAmount AS  accountAmount,
+			ifnull(a.accountAmount,0) AS  accountAmount,
 			a.totalAmount AS  totalAmount,
 			a.payFlag  AS payFlag,
 			a.payTime  AS payTime,