update

src/main/java/com/gogirl/application/order/mall/impl/MallOrderServiceImpl.java

@@ -415,7 +415,7 @@ public class MallOrderServiceImpl extends ServiceImpl<MallOrderMapper, MallOrder
 
 
         if (agentUser != null && agentUser.getDiscount().compareTo(BigDecimal.ONE) < 0) {
-            mallOrder.setTotalDiscountAmount(mallOrder.getTotalAmount().multiply(BigDecimal.ONE.subtract(agentUser.getDiscount())));
+            mallOrder.setTotalDiscountAmount(mallOrder.getTotalAmount().multiply(BigDecimal.ONE.subtract(agentUser.getDiscount())).setScale(2,BigDecimal.ROUND_HALF_UP));
             mallOrder.setTotalPayAmount(mallOrder.getTotalAmount().subtract(mallOrder.getTotalDiscountAmount()));
         } else {
             mallOrder.setTotalPayAmount(mallOrder.getTotalAmount());