From 76310c8da2f8b562fc01b8513ca5c3eb76fda4cc Mon Sep 17 00:00:00 2001
From: Cui Zhi Feng <7426394+wuxixiaocui@user.noreply.gitee.com>
Date: 星期六, 14 九月 2024 13:49:57 +0800
Subject: [PATCH] 订单商品 优惠券退款精度调整
---
src/main/java/com/mzl/flower/service/payment/OrderService.java | 18 ++++++++++++++----
src/main/表设计.xlsx | 0
src/main/java/com/mzl/flower/entity/payment/OrderItem.java | 6 ++++++
src/main/java/com/mzl/flower/service/payment/DeliveryOrderService.java | 8 +++++++-
4 files changed, 27 insertions(+), 5 deletions(-)
diff --git a/src/main/java/com/mzl/flower/entity/payment/OrderItem.java b/src/main/java/com/mzl/flower/entity/payment/OrderItem.java
index 84c559f..fa2bdd7 100644
--- a/src/main/java/com/mzl/flower/entity/payment/OrderItem.java
+++ b/src/main/java/com/mzl/flower/entity/payment/OrderItem.java
@@ -93,4 +93,10 @@
@TableField("real_price")
private BigDecimal realPrice;//真实成交价格/每扎
+ @TableField("coupon_amount_total")
+ private BigDecimal couponAmountTotal;//优惠券总金额
+
+ @TableField("real_total")
+ private BigDecimal realTotal;//真实成交总价格
+
}
diff --git a/src/main/java/com/mzl/flower/service/payment/DeliveryOrderService.java b/src/main/java/com/mzl/flower/service/payment/DeliveryOrderService.java
index bbe6730..70688b3 100644
--- a/src/main/java/com/mzl/flower/service/payment/DeliveryOrderService.java
+++ b/src/main/java/com/mzl/flower/service/payment/DeliveryOrderService.java
@@ -663,13 +663,19 @@
deduct = oi.getSupplierPrice().multiply(new BigDecimal(dto.getNum()));
} else if(Constants.CHECK_TYPE.lack.name().equals(dto.getType())){
deduct = realPrice.multiply(new BigDecimal(dto.getNum()));
+ //质检退款，按照这个单价扣，如果3扎都缺货，按照总的金额退
+ //缺货数量等于商品总数时按真实总价退款
+ if(dto.getNum().intValue() == oi.getNum() && oi.getRealTotal() != null){
+ deduct = oi.getRealTotal();
+ }
} else if (Constants.CHECK_TYPE.reduce.name().equals(dto.getType())) {
if(deductAmount == null){
throw new ValidationException("降级金额不能为空");
}
deduct = deductAmount.multiply(new BigDecimal(dto.getNum()));
BigDecimal dt = realPrice.multiply(new BigDecimal(dto.getNum()));
- if(deduct.doubleValue() > dt.doubleValue()){
+ if(deduct.doubleValue() > dt.doubleValue()
+ || (oi.getRealTotal() != null && deduct.doubleValue() > oi.getRealTotal().doubleValue())){
throw new ValidationException("降级金额不能大于商品处理数量金额");
}
}
diff --git a/src/main/java/com/mzl/flower/service/payment/OrderService.java b/src/main/java/com/mzl/flower/service/payment/OrderService.java
index 2ef01ff..54dd68e 100644
--- a/src/main/java/com/mzl/flower/service/payment/OrderService.java
+++ b/src/main/java/com/mzl/flower/service/payment/OrderService.java
@@ -517,9 +517,15 @@
BigDecimal couponAmount = calculateCoupon(memberCouponAmount, t.getTotal()
, flowerAmount, t.getNum(), t.getPrice(), isLastOne, usedCouponAmount);
t.setCouponAmount(couponAmount);//每扎平摊的优惠券面值
- t.setRealPrice(t.getPrice().subtract(couponAmount));//退款时使用的真实成交价
+ t.setRealPrice(t.getPrice().subtract(couponAmount));//退款时使用的真实成交单价
- usedCouponAmount = usedCouponAmount.add(couponAmount.multiply(BigDecimal.valueOf(t.getNum())));
+ t.setCouponAmountTotal(couponAmount.multiply(BigDecimal.valueOf(t.getNum())));
+ if(isLastOne){
+ t.setCouponAmountTotal(memberCouponAmount.subtract(usedCouponAmount));
+ } else {
+ usedCouponAmount = usedCouponAmount.add(t.getCouponAmountTotal());
+ }
+ t.setRealTotal(t.getTotal().subtract(t.getCouponAmountTotal()));
t.create(userId);
orderItemMapper.insert(t);
@@ -581,9 +587,13 @@
BigDecimal subCoupon = couponAmount.subtract(usedCouponAmount);//占有的优惠券面值
return subCoupon.divide(BigDecimal.valueOf(num), 2, RoundingMode.HALF_UP);
}
- BigDecimal radio = itemTotalAmount.divide(totalAmount, 2, RoundingMode.HALF_UP);//计算该商品总价在订单中的占比
+
+ /*BigDecimal radio = itemTotalAmount.divide(totalAmount, 2, RoundingMode.HALF_UP);//计算该商品总价在订单中的占比
BigDecimal subCoupon = couponAmount.multiply(radio);//占有的优惠券面值
- return subCoupon.divide(BigDecimal.valueOf(num), 2, RoundingMode.HALF_UP);
+ return subCoupon.divide(BigDecimal.valueOf(num), 2, RoundingMode.HALF_UP);*/
+
+ //不能分步计算，分步计算会有精度问题
+ return couponAmount.multiply(itemTotalAmount).divide(totalAmount.multiply(BigDecimal.valueOf(num)), 2, RoundingMode.HALF_UP);
}
private CouponRecordDO useCouponRecord(String orderId, BigDecimal amount, String couponRecordId){
diff --git "a/src/main/\350\241\250\350\256\276\350\256\241.xlsx" "b/src/main/\350\241\250\350\256\276\350\256\241.xlsx"
index 1233e42..3c4cf99 100644
--- "a/src/main/\350\241\250\350\256\276\350\256\241.xlsx"
+++ "b/src/main/\350\241\250\350\256\276\350\256\241.xlsx"
Binary files differ
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