From c92f4c5a78a77331c65059a635191b35752346bf Mon Sep 17 00:00:00 2001
From: Administrator <15274802129@163.com>
Date: Tue, 20 May 2025 17:58:20 +0800
Subject: [PATCH] refactor(mall): 重构 getCouponAmountMap 方法
---
src/main/java/cc/mrbird/febs/mall/service/impl/ApiMallOrderInfoServiceImpl.java | 210 +++++++++++++++++++++++++++++++++++++++-------------
1 files changed, 157 insertions(+), 53 deletions(-)
diff --git a/src/main/java/cc/mrbird/febs/mall/service/impl/ApiMallOrderInfoServiceImpl.java b/src/main/java/cc/mrbird/febs/mall/service/impl/ApiMallOrderInfoServiceImpl.java
index 2a89336..5fdf95f 100644
--- a/src/main/java/cc/mrbird/febs/mall/service/impl/ApiMallOrderInfoServiceImpl.java
+++ b/src/main/java/cc/mrbird/febs/mall/service/impl/ApiMallOrderInfoServiceImpl.java
@@ -333,6 +333,91 @@
return scoreAmountMap;
}
+// /**
+// * 根据传入的优惠卷ID和商品明细集合计算出每个商品获取的实际支付金额
+// * @param memberCouponId 优惠卷ID
+// * @param items 商品明细
+// * @return Map<Long,BigDecimal> skuId，实际支付金额
+// */
+// @Override
+// public Map<Long,BigDecimal> getCouponAmountMap(Long memberCouponId,List<AddOrderItemDto> items){
+// HashMap<Long,BigDecimal> couponAmountMap = new HashMap<>();
+// MallMemberCoupon mallMemberCoupon = mallMemberCouponMapper.selectById(memberCouponId);
+// if(ObjectUtil.isEmpty(mallMemberCoupon)){
+// return couponAmountMap;
+// }
+// Integer state = mallMemberCoupon.getState();
+// if(1 != state){
+// return couponAmountMap;
+// }
+// Long couponId = mallMemberCoupon.getCouponId();//优惠卷ID
+// List<Long> goodsIdsAll = couponGoodsMapper.selectByCouponId(couponId);
+// List<MallGoodsSku> skusAll = mallGoodsSkuMapper.selectSkuIdsByGoodsId(goodsIdsAll);//获取该优惠卷绑定的全部商品sku
+// List<Long> skuIdsAll = skusAll.stream().map(MallGoodsSku::getId).collect(Collectors.toList());//获取该优惠卷绑定的全部商品skuIDS
+// List<Long> skuIds = items.stream().map(AddOrderItemDto::getSkuId).collect(Collectors.toList());//订单中的全部skuIds
+//
+// /**
+// * 获取这张优惠卷生效的skuIds
+// */
+// Set<Long> intersection = skuIdsAll.stream()
+// .filter(item -> skuIds.contains(item))
+// .collect(Collectors.toSet());//获取两个集合的交集
+// if(CollUtil.isEmpty(intersection)){
+// return couponAmountMap;
+// }
+// HashMap<Long,BigDecimal> skuMap = new HashMap<>();//每个订单详情的ID和amount的map
+// List<MallGoodsSku> skus = mallGoodsSkuMapper.selectByIds(new ArrayList<>(intersection));
+// BigDecimal totalAmount = BigDecimal.ZERO;//订单中的总金额
+// Map<Long, AddOrderItemDto> itemMap = new HashMap<>();// 预先将items转换为Map，以skuId作为键
+// for (AddOrderItemDto addOrderItemDto : items) {
+// itemMap.put(addOrderItemDto.getSkuId(), addOrderItemDto);
+// }
+// for(MallGoodsSku mallGoodsSku : skus){
+// Long id = mallGoodsSku.getId();
+// BigDecimal presentPrice = mallGoodsSku.getPresentPrice();
+// // 检查itemMap中是否存在该商品
+// AddOrderItemDto addOrderItemDto = itemMap.get(id);
+// if (addOrderItemDto != null) {
+// BigDecimal skuAmount = presentPrice.multiply(BigDecimal.valueOf(addOrderItemDto.getCnt()));
+// totalAmount = totalAmount.add(skuAmount);
+// skuMap.put(id,skuAmount);
+// }
+// }
+//
+// /**
+// * 计算每个商品利用优惠卷打折的具体金额
+// */
+// MallGoodsCoupon mallGoodsCoupon = mallGoodsCouponMapper.selectById(mallMemberCoupon.getCouponId());
+// BigDecimal costAmount = mallGoodsCoupon.getCostAmount();
+// BigDecimal realAmount = mallGoodsCoupon.getRealAmount();
+// if(totalAmount.compareTo(costAmount) < 0){
+// return couponAmountMap;
+// }
+// HashMap<Long,BigDecimal> skuMapPercent = new HashMap<>();//每个订单详情的ID和amount的map
+// for (Map.Entry<Long,BigDecimal> entry : skuMap.entrySet()) {
+// Long keySkuId = entry.getKey();
+// BigDecimal valueSkuAmount = entry.getValue();
+// BigDecimal divide = valueSkuAmount.divide(totalAmount, 4, BigDecimal.ROUND_DOWN);//每个商品占符合满减的总额的比例
+// skuMapPercent.put(keySkuId,divide);
+// Integer type = mallGoodsCoupon.getType();
+// if(MallGoodsCoupon.TYPE_ONE == type){
+// BigDecimal bigDecimal = realAmount.multiply(divide).setScale(0, BigDecimal.ROUND_DOWN);//每个SKU的减免金额(比例*减免金额)
+// BigDecimal skuRealAmount = valueSkuAmount.subtract(bigDecimal.compareTo(BigDecimal.ZERO) > 0 ? bigDecimal : BigDecimal.ZERO);//实际支付金额
+// couponAmountMap.put(keySkuId,skuRealAmount);
+// }
+// if(MallGoodsCoupon.TYPE_TWO == type){
+// BigDecimal divideTime = totalAmount.divide(costAmount, 0, BigDecimal.ROUND_DOWN);//累计减免次数
+// BigDecimal multiply = divideTime.multiply(realAmount);//实际减免金额
+// BigDecimal bigDecimal = multiply.multiply(divide).setScale(0, BigDecimal.ROUND_DOWN);//每个SKU的减免金额(比例*实际减免金额)
+// BigDecimal skuRealAmount = valueSkuAmount.subtract(bigDecimal.compareTo(BigDecimal.ZERO) > 0 ? bigDecimal : BigDecimal.ZERO);//实际支付金额
+// couponAmountMap.put(keySkuId,skuRealAmount);
+// }
+// }
+// return couponAmountMap;
+// }
+
+
+
/**
* 根据传入的优惠卷ID和商品明细集合计算出每个商品获取的实际支付金额
* @param memberCouponId 优惠卷ID
@@ -340,79 +425,98 @@
* @return Map<Long,BigDecimal> skuId，实际支付金额
*/
@Override
- public Map<Long,BigDecimal> getCouponAmountMap(Long memberCouponId,List<AddOrderItemDto> items){
- HashMap<Long,BigDecimal> couponAmountMap = new HashMap<>();
- MallMemberCoupon mallMemberCoupon = mallMemberCouponMapper.selectById(memberCouponId);
- if(ObjectUtil.isEmpty(mallMemberCoupon)){
- return couponAmountMap;
- }
- Integer state = mallMemberCoupon.getState();
- if(1 != state){
- return couponAmountMap;
- }
- Long couponId = mallMemberCoupon.getCouponId();//优惠卷ID
- List<Long> goodsIdsAll = couponGoodsMapper.selectByCouponId(couponId);
- List<MallGoodsSku> skusAll = mallGoodsSkuMapper.selectSkuIdsByGoodsId(goodsIdsAll);//获取该优惠卷绑定的全部商品sku
- List<Long> skuIdsAll = skusAll.stream().map(MallGoodsSku::getId).collect(Collectors.toList());//获取该优惠卷绑定的全部商品skuIDS
- List<Long> skuIds = items.stream().map(AddOrderItemDto::getSkuId).collect(Collectors.toList());//订单中的全部skuIds
+ public Map<Long, BigDecimal> getCouponAmountMap(Long memberCouponId, List<AddOrderItemDto> items) {
+ HashMap<Long, BigDecimal> couponAmountMap = new HashMap<>();
+ // 获取优惠券信息
+ Optional<MallMemberCoupon> optionalMallMemberCoupon = Optional.ofNullable(mallMemberCouponMapper.selectById(memberCouponId));
+ MallMemberCoupon mallMemberCoupon = optionalMallMemberCoupon.orElse(null);
- /**
- * 获取这张优惠卷生效的skuIds
- */
- Set<Long> intersection = skuIdsAll.stream()
- .filter(item -> skuIds.contains(item))
- .collect(Collectors.toSet());//获取两个集合的交集
- if(CollUtil.isEmpty(intersection)){
+ if (mallMemberCoupon == null || mallMemberCoupon.getState() != 1) {
return couponAmountMap;
}
- HashMap<Long,BigDecimal> skuMap = new HashMap<>();//每个订单详情的ID和amount的map
- List<MallGoodsSku> skus = mallGoodsSkuMapper.selectByIds(new ArrayList<>(intersection));
- BigDecimal totalAmount = BigDecimal.ZERO;//订单中的总金额
- Map<Long, AddOrderItemDto> itemMap = new HashMap<>();// 预先将items转换为Map，以skuId作为键
- for (AddOrderItemDto addOrderItemDto : items) {
- itemMap.put(addOrderItemDto.getSkuId(), addOrderItemDto);
+
+ Set<Long> intersection = items.stream().map(AddOrderItemDto::getSkuId).collect(Collectors.toSet()); // 订单中的全部skuIds
+
+ if (intersection.isEmpty()) {
+ return couponAmountMap;
}
- for(MallGoodsSku mallGoodsSku : skus){
+
+ // 获取订单详情的ID和amount的map
+ Map<Long, AddOrderItemDto> itemMap = items.stream()
+ .collect(Collectors.toMap(AddOrderItemDto::getSkuId, item -> item));
+
+ List<MallGoodsSku> skus = mallGoodsSkuMapper.selectList(
+ new LambdaQueryWrapper<MallGoodsSku>()
+ .select(MallGoodsSku::getId, MallGoodsSku::getPresentPrice)
+ .in(MallGoodsSku::getId, intersection)
+ );
+ BigDecimal totalAmount = BigDecimal.ZERO;
+ Map<Long, BigDecimal> skuMap = new HashMap<>();
+
+ for (MallGoodsSku mallGoodsSku : skus) {
Long id = mallGoodsSku.getId();
BigDecimal presentPrice = mallGoodsSku.getPresentPrice();
- // 检查itemMap中是否存在该商品
AddOrderItemDto addOrderItemDto = itemMap.get(id);
if (addOrderItemDto != null) {
BigDecimal skuAmount = presentPrice.multiply(BigDecimal.valueOf(addOrderItemDto.getCnt()));
totalAmount = totalAmount.add(skuAmount);
- skuMap.put(id,skuAmount);
+ skuMap.put(id, skuAmount);
}
}
- /**
- * 计算每个商品利用优惠卷打折的具体金额
- */
- MallGoodsCoupon mallGoodsCoupon = mallGoodsCouponMapper.selectById(mallMemberCoupon.getCouponId());
- BigDecimal costAmount = mallGoodsCoupon.getCostAmount();
- BigDecimal realAmount = mallGoodsCoupon.getRealAmount();
- if(totalAmount.compareTo(costAmount) < 0){
+ // 计算每个商品利用优惠卷打折的具体金额
+ Optional<MallGoodsCoupon> optionalMallGoodsCoupon = Optional.ofNullable(mallGoodsCouponMapper.selectById(mallMemberCoupon.getCouponId()));
+ MallGoodsCoupon mallGoodsCoupon = optionalMallGoodsCoupon.orElse(null);
+ if (mallGoodsCoupon == null) {
return couponAmountMap;
}
- HashMap<Long,BigDecimal> skuMapPercent = new HashMap<>();//每个订单详情的ID和amount的map
- for (Map.Entry<Long,BigDecimal> entry : skuMap.entrySet()) {
+
+ BigDecimal costAmount = mallGoodsCoupon.getCostAmount();
+ BigDecimal realAmount = mallGoodsCoupon.getRealAmount();
+ Integer type = mallGoodsCoupon.getType();
+ if (MallGoodsCoupon.TYPE_ONE == type) {
+ realAmount = mallGoodsCoupon.getRealAmount();
+ } else if (MallGoodsCoupon.TYPE_TWO == type) {
+ BigDecimal divideTime = totalAmount.divide(costAmount, 0, RoundingMode.DOWN); // 累计减免次数
+ realAmount = divideTime.multiply(realAmount); // 实际减免金额
+ }
+
+ if (totalAmount.compareTo(costAmount) < 0) {
+ return couponAmountMap;
+ }
+
+ BigDecimal totalDiscount = BigDecimal.ZERO;
+ for (Map.Entry<Long, BigDecimal> entry : skuMap.entrySet()) {
Long keySkuId = entry.getKey();
BigDecimal valueSkuAmount = entry.getValue();
- BigDecimal divide = valueSkuAmount.divide(totalAmount, 4, BigDecimal.ROUND_DOWN);//每个商品占符合满减的总额的比例
- skuMapPercent.put(keySkuId,divide);
- Integer type = mallGoodsCoupon.getType();
- if(MallGoodsCoupon.TYPE_ONE == type){
- BigDecimal bigDecimal = realAmount.multiply(divide).setScale(0, BigDecimal.ROUND_DOWN);//每个SKU的减免金额(比例*减免金额)
- BigDecimal skuRealAmount = valueSkuAmount.subtract(bigDecimal.compareTo(BigDecimal.ZERO) > 0 ? bigDecimal : BigDecimal.ZERO);//实际支付金额
- couponAmountMap.put(keySkuId,skuRealAmount);
+ BigDecimal divide = valueSkuAmount.divide(totalAmount, 4, RoundingMode.DOWN); // 每个商品占符合满减的总额的比例
+ BigDecimal skuRealAmount = BigDecimal.ZERO;
+ if (MallGoodsCoupon.TYPE_ONE == type) {
+ BigDecimal bigDecimalOne = realAmount.multiply(divide).setScale(2, RoundingMode.DOWN); // 每个SKU的减免金额(比例*减免金额)
+ skuRealAmount = valueSkuAmount.subtract(bigDecimalOne.max(BigDecimal.ZERO)).setScale(2, RoundingMode.DOWN);
+ totalDiscount = totalDiscount.add(bigDecimalOne);
+ } else if (MallGoodsCoupon.TYPE_TWO == type) {
+ BigDecimal divideTime = totalAmount.divide(costAmount, 0, RoundingMode.DOWN); // 累计减免次数
+ BigDecimal multiply = divideTime.multiply(realAmount); // 实际减免金额
+ BigDecimal bigDecimalTwo = multiply.multiply(divide).setScale(2, RoundingMode.DOWN); // 每个SKU的减免金额(比例*实际减免金额)
+ skuRealAmount = valueSkuAmount.subtract(bigDecimalTwo.max(BigDecimal.ZERO)).setScale(2, RoundingMode.DOWN);
+ totalDiscount = totalDiscount.add(bigDecimalTwo);
}
- if(MallGoodsCoupon.TYPE_TWO == type){
- BigDecimal divideTime = totalAmount.divide(costAmount, 0, BigDecimal.ROUND_DOWN);//累计减免次数
- BigDecimal multiply = divideTime.multiply(realAmount);//实际减免金额
- BigDecimal bigDecimal = multiply.multiply(divide).setScale(0, BigDecimal.ROUND_DOWN);//每个SKU的减免金额(比例*实际减免金额)
- BigDecimal skuRealAmount = valueSkuAmount.subtract(bigDecimal.compareTo(BigDecimal.ZERO) > 0 ? bigDecimal : BigDecimal.ZERO);//实际支付金额
- couponAmountMap.put(keySkuId,skuRealAmount);
+ couponAmountMap.put(keySkuId, skuRealAmount);
+ }
+
+ // 调整最后一个商品的减免金额以确保总减免金额达到预期
+ if (totalDiscount.compareTo(realAmount) < 0) {
+ BigDecimal difference = realAmount.subtract(totalDiscount);
+ for (Map.Entry<Long, BigDecimal> entry : couponAmountMap.entrySet()) {
+ Long keySkuId = entry.getKey();
+ BigDecimal skuRealAmount = entry.getValue();
+ BigDecimal newSkuRealAmount = skuRealAmount.subtract(difference).setScale(2, RoundingMode.DOWN);
+ couponAmountMap.put(keySkuId, newSkuRealAmount);
+ break; // 调整最后一个商品的减免金额
}
}
+
return couponAmountMap;
}
--
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