From f138375f15c072d10335c20ecec9b35f1da78ee4 Mon Sep 17 00:00:00 2001
From: 无关风月 <443237572@qq.com>
Date: 星期三, 03 七月 2024 16:17:59 +0800
Subject: [PATCH] bug修改

---
 ruoyi-service/ruoyi-goods/src/main/java/com/ruoyi/goods/service/impl/TGoodsServiceImpl.java |  125 ++++++++++++++++++++++++++++++++++++-----
 1 files changed, 109 insertions(+), 16 deletions(-)

diff --git a/ruoyi-service/ruoyi-goods/src/main/java/com/ruoyi/goods/service/impl/TGoodsServiceImpl.java b/ruoyi-service/ruoyi-goods/src/main/java/com/ruoyi/goods/service/impl/TGoodsServiceImpl.java
index 04491b7..87a6610 100644
--- a/ruoyi-service/ruoyi-goods/src/main/java/com/ruoyi/goods/service/impl/TGoodsServiceImpl.java
+++ b/ruoyi-service/ruoyi-goods/src/main/java/com/ruoyi/goods/service/impl/TGoodsServiceImpl.java
@@ -66,7 +66,8 @@
         if (null != goods.getTotal()) {
             // 库存预热,redisson分布式锁
             String key = String.format(RedisConstants.GOOD_STOCK, goods.getId());
-            List<TOrder> orderList = orderService.lambdaQuery().eq(TOrder::getGoodsId, goodId)
+            List<TOrder> orderList = orderService.lambdaQuery()
+                    .eq(TOrder::getGoodsId, goodId)
                     .eq(TOrder::getDisabled, 0).list();
             int sum = 0;
             if (!orderList.isEmpty()) {
@@ -88,6 +89,7 @@
     @Override
     @Transactional(rollbackFor = Exception.class)
     public R<String> goodExchange(GoodExchangeDTO goodExchange, Recipient recipient) {
+        // 用户本次兑换数量
         Integer number = goodExchange.getNumber();
         Integer goodId = goodExchange.getGoodId();
         TGoods good = lambdaQuery().eq(TGoods::getId, goodId).one();
@@ -108,22 +110,37 @@
             // 检查库存总数是否足够
             List<TOrder> order = orderService.lambdaQuery().eq(TOrder::getGoodsId, goodId)
                     .eq(TOrder::getDisabled, 0).list();
+            int item;
             if (!order.isEmpty()) {
-                int totalNumber = order.stream().map(TOrder::getCount).collect(Collectors.toList())
+                item = order.stream().map(TOrder::getCount).collect(Collectors.toList())
                         .stream().mapToInt(Integer::intValue).sum();
-                boolean canBuy = good.getTotal() - totalNumber >= number;
-                if (!canBuy) {
-                    throw new GlobalException("商品库存不足,兑换失败!");
-                }
+            } else {
+                item = 0;
+            }
+            boolean canBuy = good.getTotal() - item >= number;
+            if (!canBuy) {
+                throw new GlobalException("商品库存不足,兑换失败!");
             }
             // 检查用户兑换数量是否超过单用户最大兑换数量
             List<TOrder> orderList = orderService.lambdaQuery().eq(TOrder::getUserId, user.getId())
                     .eq(TOrder::getGoodsId, goodId).list();
-            // 该商品订单为空、订单数量未超过商品的单个用户兑换上限数量时,可以进行兑换
-            int totalNumber = orderList.stream().map(TOrder::getCount).collect(Collectors.toList())
-                    .stream().mapToInt(Integer::intValue).sum();
-            boolean canExchange = orderList.isEmpty() || null == good.getUserCount() ||
-                    (totalNumber + number) <= good.getUserCount();
+            // 用户已兑换数量
+            int totalNumber;
+            if (orderList.isEmpty()) {
+                totalNumber = 0;
+            } else {
+                // 该商品订单为空、订单数量未超过商品的单个用户兑换上限数量时,可以进行兑换
+                totalNumber = orderList.stream().map(TOrder::getCount).collect(Collectors.toList())
+                        .stream().mapToInt(Integer::intValue).sum();
+            }
+            boolean canExchange = true;
+            if (null != good.getUserCount()) {
+                if (number > good.getUserCount()) {
+                    canExchange = false;
+                } else {
+                    canExchange = (totalNumber + number) <= good.getUserCount();
+                }
+            }
             if (!canExchange) {
                 return R.exchangeError("兑换失败,当前兑换数量已超过最大兑换数量,剩余兑换数量为: " +
                         (good.getUserCount() - totalNumber) + "!");
@@ -146,6 +163,29 @@
                 return R.exchangeError("商品兑换失败!");
             }
         } else {
+            if (null != good.getUserCount()) {
+                // 检查用户兑换数量是否超过单用户最大兑换数量
+                List<TOrder> orderList = orderService.lambdaQuery().eq(TOrder::getUserId, user.getId())
+                        .eq(TOrder::getGoodsId, goodId).list();
+                int totalNumber;
+                if (orderList.isEmpty()) {
+                    totalNumber = 0;
+                } else {
+                    // 该商品订单为空、订单数量未超过商品的单个用户兑换上限数量时,可以进行兑换
+                    totalNumber = orderList.stream().map(TOrder::getCount).collect(Collectors.toList())
+                            .stream().mapToInt(Integer::intValue).sum();
+                }
+                Integer userCount = good.getUserCount();
+                if (userCount > totalNumber) {
+                    int i = userCount - totalNumber;
+                    if (number > i) {
+                        return R.exchangeError("兑换失败,当前兑换数量已超过最大兑换数量,剩余兑换数量为: " +
+                                i + "!");
+                    }
+                } else {
+                    return R.exchangeError("兑换失败,当前兑换数量已超过最大兑换数量!");
+                }
+            }
             boolean result = exchangeGood(goodExchange, recipient, number, goodId, needIntegral);
             if (!result) {
                 return R.exchangeError("商品兑换失败!");
@@ -205,14 +245,39 @@
             return R.exchangeError("兑换失败,当前剩余积分不足!");
         }
         if (null != good.getTotal()) {
+            // 检查库存总数是否足够
+            List<TOrder> order = orderService.lambdaQuery().eq(TOrder::getGoodsId, goodId)
+                    .eq(TOrder::getDisabled, 0).list();
+            int item;
+            if (!order.isEmpty()) {
+                item = order.stream().map(TOrder::getCount).collect(Collectors.toList())
+                        .stream().mapToInt(Integer::intValue).sum();
+            } else {
+                item = 0;
+            }
+            boolean canBuy = good.getTotal() - item >= number;
+            if (!canBuy) {
+                throw new GlobalException("商品库存不足,兑换失败!");
+            }
             // 检查用户兑换数量是否超过单用户最大兑换数量
             List<TOrder> orderList = orderService.lambdaQuery().eq(TOrder::getUserId, user.getId())
                     .eq(TOrder::getGoodsId, goodId).list();
-            // 该商品订单为空、订单数量未超过商品的单个用户兑换上限数量时,可以进行兑换
-            int totalNumber = orderList.stream().map(TOrder::getCount).collect(Collectors.toList())
-                    .stream().mapToInt(Integer::intValue).sum();
-            boolean canExchange = orderList.isEmpty() || null == good.getUserCount() ||
-                    (totalNumber + number) <= good.getUserCount();
+            int totalNumber;
+            if (orderList.isEmpty()) {
+                totalNumber = 0;
+            } else {
+                // 该商品订单为空、订单数量未超过商品的单个用户兑换上限数量时,可以进行兑换
+                totalNumber = orderList.stream().map(TOrder::getCount).collect(Collectors.toList())
+                        .stream().mapToInt(Integer::intValue).sum();
+            }
+            boolean canExchange = true;
+            if (null != good.getUserCount()) {
+                if (number > good.getUserCount()) {
+                    canExchange = false;
+                } else {
+                    canExchange = (totalNumber + number) <= good.getUserCount();
+                }
+            }
             if (!canExchange) {
                 return R.exchangeError("兑换失败,当前兑换数量已超过最大兑换数量,剩余兑换数量为: " +
                         (good.getUserCount() - totalNumber) + "!");
@@ -238,6 +303,29 @@
                 return R.exchangeError("商品兑换失败!");
             }
         } else {
+            if (null != good.getUserCount()) {
+                // 检查用户兑换数量是否超过单用户最大兑换数量
+                List<TOrder> orderList = orderService.lambdaQuery().eq(TOrder::getUserId, user.getId())
+                        .eq(TOrder::getGoodsId, goodId).list();
+                int totalNumber;
+                if (orderList.isEmpty()) {
+                    totalNumber = 0;
+                } else {
+                    // 该商品订单为空、订单数量未超过商品的单个用户兑换上限数量时,可以进行兑换
+                    totalNumber = orderList.stream().map(TOrder::getCount).collect(Collectors.toList())
+                            .stream().mapToInt(Integer::intValue).sum();
+                }
+                Integer userCount = good.getUserCount();
+                if (good.getUserCount() > totalNumber) {
+                    int i = userCount - totalNumber;
+                    if (number > i) {
+                        return R.exchangeError("兑换失败,当前兑换数量已超过最大兑换数量,剩余兑换数量为: " +
+                                i + "!");
+                    }
+                } else {
+                    return R.exchangeError("兑换失败,当前兑换数量已超过最大兑换数量!");
+                }
+            }
             boolean result = exchangeGoodParent(goodExchange, recipient, number, goodId, needIntegral);
             if (!result) {
                 return R.exchangeError("商品兑换失败!");
@@ -246,6 +334,11 @@
         return R.ok();
     }
 
+    @Override
+    public void updateOne(TGoods dto) {
+        this.baseMapper.updateOne(dto);
+    }
+
     private TOrder orderInfo(GoodExchangeDTO goodExchange, Recipient recipient, Integer number, Integer goodId, int needIntegral) {
         TOrder order = new TOrder();
         order.setOrderNumber(goodExchange.getOrderNumber());

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