From 67ac5176bb4b4af2111598fcd55340587f749e80 Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Mon, 24 Nov 2025 17:09:03 +0800
Subject: [PATCH] =?UTF-8?q?=E8=8B=8D=E7=A9=B9=E5=A4=96=E5=8D=96--=E5=88=A0?=
 =?UTF-8?q?=E9=99=A4=E4=B8=80=E6=9D=A1=E8=B4=AD=E7=89=A9=E8=BD=A6?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../user/ShoppingCartController.java          |  9 ++++++++
 .../com/sky/mapper/ShoppingCartMapper.java    |  3 +++
 .../com/sky/service/ShoppingCartService.java  |  3 +++
 .../service/impl/ShoppingCartServiceImpl.java | 21 +++++++++++++++++++
 4 files changed, 36 insertions(+)

diff --git a/sky-server/src/main/java/com/sky/controller/user/ShoppingCartController.java b/sky-server/src/main/java/com/sky/controller/user/ShoppingCartController.java
index d57c0fc..b263ddf 100644
--- a/sky-server/src/main/java/com/sky/controller/user/ShoppingCartController.java
+++ b/sky-server/src/main/java/com/sky/controller/user/ShoppingCartController.java
@@ -45,4 +45,13 @@ public class ShoppingCartController {
         shoppingCartService.cleanShoppingCart();
         return Result.success();
     }
+
+
+    @PostMapping("/sub")
+    @ApiOperation("删除购物车中一个商品")
+    public Result subShoppingCart(@RequestBody ShoppingCartDTO shoppingCartDTO){
+        log.info("删除购物车中一个商品");
+        shoppingCartService.subShoppingCart(shoppingCartDTO);
+        return Result.success();
+    }
 }
diff --git a/sky-server/src/main/java/com/sky/mapper/ShoppingCartMapper.java b/sky-server/src/main/java/com/sky/mapper/ShoppingCartMapper.java
index 41e56e2..a13c6ab 100644
--- a/sky-server/src/main/java/com/sky/mapper/ShoppingCartMapper.java
+++ b/sky-server/src/main/java/com/sky/mapper/ShoppingCartMapper.java
@@ -26,4 +26,7 @@ public interface ShoppingCartMapper {
 
     @Delete("delete from shopping_cart where user_id = #{userId}")
     void deleteByUserId(Long userId);
+
+    @Delete("delete from shopping_cart where id = #{id}")
+    void deleteById(Long id);
 }
diff --git a/sky-server/src/main/java/com/sky/service/ShoppingCartService.java b/sky-server/src/main/java/com/sky/service/ShoppingCartService.java
index 25bdf92..e5d8197 100644
--- a/sky-server/src/main/java/com/sky/service/ShoppingCartService.java
+++ b/sky-server/src/main/java/com/sky/service/ShoppingCartService.java
@@ -20,4 +20,7 @@ public interface ShoppingCartService {
     清空购物车
      */
     void cleanShoppingCart();
+
+    void subShoppingCart(ShoppingCartDTO shoppingCartDTO);
+
 }
diff --git a/sky-server/src/main/java/com/sky/service/impl/ShoppingCartServiceImpl.java b/sky-server/src/main/java/com/sky/service/impl/ShoppingCartServiceImpl.java
index ec3a08b..f4d6c7a 100644
--- a/sky-server/src/main/java/com/sky/service/impl/ShoppingCartServiceImpl.java
+++ b/sky-server/src/main/java/com/sky/service/impl/ShoppingCartServiceImpl.java
@@ -113,4 +113,25 @@ public class ShoppingCartServiceImpl implements ShoppingCartService {
 
         shoppingCartMapper.deleteByUserId(BaseContext.getCurrentId());
     }
+
+    /*
+    删除购物车中一个商品
+     */
+    @Override
+    public void subShoppingCart(ShoppingCartDTO shoppingCartDTO) {
+        ShoppingCart cart = new ShoppingCart();
+        BeanUtils.copyProperties(shoppingCartDTO,cart);
+        cart.setUserId(BaseContext.getCurrentId());
+        List<ShoppingCart> cartList = shoppingCartMapper.list(cart);
+        if (cartList != null && cartList.size() > 0) {
+            cart = cartList.get(0);
+
+            if (cart.getNumber() > 1) {
+                cart.setNumber(cart.getNumber() - 1);
+                shoppingCartMapper.updateNumberById(cart);
+            } else {
+                shoppingCartMapper.deleteById(cart.getId());
+            }
+        }
+    }
 }