添加购物车

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

@@ -1,19 +1,19 @@
 package com.sky.controller.user;
 
 import com.sky.dto.ShoppingCartDTO;
+import com.sky.entity.ShoppingCart;
 import com.sky.result.Result;
 import com.sky.service.ShoppingCartService;
 import io.swagger.annotations.Api;
 import io.swagger.annotations.ApiOperation;
 import lombok.extern.slf4j.Slf4j;
-import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.*;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
 
 import javax.annotation.Resource;
+import java.util.List;
 
 @RestController
-@RequestMapping("/user/shopping")
+@RequestMapping("/user/shoppingCart")
 @Slf4j
 @Api(tags = "C端购物车相关接口")
 public class ShoppingCartController {
@@ -28,10 +28,50 @@ public class ShoppingCartController {
      * @return Result
      */
     @ApiOperation("添加购物车")
-    @PostMapping("add")
+    @PostMapping("/add")
-    public Result<String> add(ShoppingCartDTO shoppingCartDTO) {
+    public Result<String> add(@RequestBody ShoppingCartDTO shoppingCartDTO) {
         log.info("添加购物车：{}", shoppingCartDTO);
         shoppingCartService.addShoppingCart(shoppingCartDTO);
         return Result.success();
     }
+
+    /**
+     * 删除购物车一个商品
+     *
+     * @param shoppingCartDTO ShoppingCartDTO
+     * @return Result<String>
+     */
+    @ApiOperation("删除购物车一个商品")
+    @PostMapping("/sub")
+    public Result<String> sub(@RequestBody ShoppingCartDTO shoppingCartDTO) {
+        log.info("删除购物车一个商品：{}", shoppingCartDTO);
+        shoppingCartService.subShoppingCart(shoppingCartDTO);
+        return Result.success();
+    }
+
+    /**
+     * 查看购物车
+     *
+     * @return 购物车集合
+     */
+    @ApiOperation("查看购物车")
+    @GetMapping("/list")
+    public Result<List<ShoppingCart>> list() {
+        log.info("查看购物车");
+        List<ShoppingCart> list = shoppingCartService.showShoppingCart();
+        return Result.success(list);
+    }
+
+    /**
+     * 清空购物车
+     *
+     * @return Result<String>
+     */
+    @ApiOperation("清空购物车")
+    @DeleteMapping("/clean")
+    public Result<String> clean() {
+        log.info("清空购物车");
+        shoppingCartService.clean();
+        return Result.success();
+    }
 }

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

@@ -8,7 +8,7 @@ import java.util.List;
 @Mapper
 public interface ShoppingCartMapper {
     /**
-     * 添加购物车
+     * 查看购物车商品
      *
      * @param shoppingCart ShoppingCart
      * @return List<ShoppingCart>
@@ -28,4 +28,18 @@ public interface ShoppingCartMapper {
      * @param shoppingCart ShoppingCart
      */
     void insert(ShoppingCart shoppingCart);
+
+    /**
+     * 清空购物车
+     *
+     * @param userId 用户id
+     */
+    void deleteByUserId(Long userId);
+
+    /**
+     * 根据id删除购物车内容
+     *
+     * @param id 购物车中id
+     */
+    void deleteById(Long id);
 }

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

@@ -1,6 +1,9 @@
 package com.sky.service;
 
 import com.sky.dto.ShoppingCartDTO;
+import com.sky.entity.ShoppingCart;
+
+import java.util.List;
 
 public interface ShoppingCartService {
     /**
@@ -9,4 +12,24 @@ public interface ShoppingCartService {
      * @param shoppingCartDTO 购物车参数
      */
     void addShoppingCart(ShoppingCartDTO shoppingCartDTO);
+
+
+    /**
+     * 查看购物车
+     *
+     * @return 购物车集合
+     */
+    List<ShoppingCart> showShoppingCart();
+
+    /**
+     * 清空购物车
+     */
+    void clean();
+
+    /**
+     * 删除购物车一个商品
+     *
+     * @param shoppingCartDTO 当前购物车信息
+     */
+    void subShoppingCart(ShoppingCartDTO shoppingCartDTO);
 }

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

@@ -64,9 +64,61 @@ public class ShoppingCartServiceImplImpl implements ShoppingCartService {
                 shoppingCart.setImage(setmeal.getImage());
                 shoppingCart.setAmount(setmeal.getPrice());
             }
+            // 因为都是新增的，所以无论是菜品还是套餐都设为1
             shoppingCart.setNumber(1);
             shoppingCart.setCreateTime(LocalDateTime.now());
             shoppingCartMapper.insert(shoppingCart);
         }
     }
+
+    /**
+     * 查看购物车
+     *
+     * @return 购物车列表
+     */
+    @Override
+    public List<ShoppingCart> showShoppingCart() {
+        // 当前微信用户id
+        Long currentId = BaseContext.getCurrentId();
+        ShoppingCart shoppingCart = ShoppingCart.builder().userId(currentId).build();
+        return shoppingCartMapper.list(shoppingCart);
+    }
+
+    /**
+     * 清空购物车
+     */
+    @Override
+    public void clean() {
+        Long currentId = BaseContext.getCurrentId();
+        shoppingCartMapper.deleteByUserId(currentId);
+    }
+
+    /**
+     * 删除购物车一个商品
+     *
+     * @param shoppingCartDTO 当前购物车信息
+     */
+    @Override
+    public void subShoppingCart(ShoppingCartDTO shoppingCartDTO) {
+        ShoppingCart shoppingCart = new ShoppingCart();
+        BeanUtils.copyProperties(shoppingCartDTO, shoppingCart);
+        // 设置当前用户id
+        shoppingCart.setUserId(BaseContext.getCurrentId());
+        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
+
+        if (shoppingCartList != null && !shoppingCartList.isEmpty()) {
+            // // 当前购物车
+            shoppingCart = shoppingCartList.get(0);
+            Integer number = shoppingCart.getNumber();
+            Long id = shoppingCart.getId();
+            // 如果当前值为1直接删除
+            if (number == 1) {
+                shoppingCartMapper.deleteById(id);
+            } else {
+                // 如果当前值不为1需要将数量减一
+                shoppingCart.setNumber(shoppingCart.getNumber() - 1);
+                shoppingCartMapper.updateNumberById(shoppingCart);
+            }
+        }
+    }
 }

sky-server/src/main/resources/mapper/ShoppingCart.xml

@@ -16,13 +16,27 @@
         where id = #{id};
     </update>
 
-    <!-- 添加购物车 -->
+    <!-- 清空购物车 -->
+    <delete id="deleteByUserId">
+        delete
+        from shopping_cart
+        where user_id = #{userId};
+    </delete>
+
+    <!-- 根据id删除购物车内容 -->
+    <delete id="deleteById">
+        delete
+        from shopping_cart
+        where id = #{id};
+    </delete>
+
+    <!-- 查看购物车商品 -->
     <select id="list" resultType="com.sky.entity.ShoppingCart">
         select *
         from shopping_cart
         <where>
             <if test="userId != null">
-                and userId = #{userId}
+                and user_id = #{userId}
             </if>
             <if test="setmealId != null">
                 and setmeal_id = #{setmealId}