清空购物车业务代码开发

sky-server/src/main/java/com/sky/controller/user/ShoppingCartController.java

@@ -44,4 +44,16 @@ public class ShoppingCartController {
         List<ShoppingCart> list = shoppingCartService.showShoppingCart();
         return Result.success(list);
     }
+
+
+    /**
+     * 清空购物车
+     * @return
+     */
+    @DeleteMapping("/clean")
+    @ApiOperation("清空购物车")
+    public Result clean(){
+        shoppingCartService.cleanShoppingCart();
+        return Result.success();
+    }
 }

sky-server/src/main/java/com/sky/mapper/ShoppingCartMapper.java

@@ -3,6 +3,7 @@ package com.sky.mapper;
 
 import com.sky.dto.ShoppingCartDTO;
 import com.sky.entity.ShoppingCart;
+import org.apache.ibatis.annotations.Delete;
 import org.apache.ibatis.annotations.Insert;
 import org.apache.ibatis.annotations.Mapper;
 import org.apache.ibatis.annotations.Update;
@@ -33,4 +34,12 @@ public interface ShoppingCartMapper {
     +
     "values (#{name}, #{image}, #{userId}, #{dishId}, #{setmealId}, #{dishFlavor}, #{amount}, #{createTime}, #{number})")
     void insert(ShoppingCart shoppingCart);
+
+
+    /**
+     * 根据微信用户id删除购物车数据
+     * @param userId
+     */
+    @Delete("delete from shopping_cart where user_id = #{userId}")
+    void deleteByUserId(Long userId);
 }

sky-server/src/main/java/com/sky/service/ShoppingCartService.java

@@ -21,4 +21,10 @@ public interface ShoppingCartService {
      * @return
      */
     List<ShoppingCart> showShoppingCart();
+
+
+    /**
+     * 清空购物车
+     */
+    void cleanShoppingCart();
 }

sky-server/src/main/java/com/sky/service/impl/ShoppingCartServiceImpl.java

@@ -96,4 +96,15 @@ public class ShoppingCartServiceImpl implements ShoppingCartService {
         List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
         return list;
     }
+
+
+    /**
+     * 清空购物车
+     */
+    @Override
+    public void cleanShoppingCart() {
+        //获取当前微信用户的id
+        Long userId = BaseContext.getCurrentId();
+        shoppingCartMapper.deleteByUserId(userId);
+    }
 }