再来一单功能开发

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

@@ -88,4 +88,16 @@ public class OrderController {
         orderService.cancel(id);
         return Result.success();
     }
+
+
+    /**
+     * 再来一单
+     * @param id
+     * @return
+     */
+    @PostMapping("/repetition/{id}")
+    public Result repetition(@PathVariable Long id){
+        orderService.repetition(id);
+        return Result.success();
+    }
 }

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

@@ -41,4 +41,11 @@ public interface ShoppingCartMapper {
      */
     @Delete("delete from shopping_cart where user_id = #{uerId}")
     void deleteByUserId(Long userId);
+
+    /**
+     * 批量插入购物车数据
+     *
+     * @param shoppingCartList
+     */
+    void insertBatch(List<ShoppingCart> shoppingCartList);
 }

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

@@ -51,4 +51,10 @@ public interface OrderService {
      * @param id
      */
     void cancel(Long id) throws Exception;
+
+    /**
+     * 再来一单
+     * @param id
+     */
+    void repetition(Long id);
 }

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

@@ -30,6 +30,7 @@ import java.math.BigDecimal;
 import java.time.LocalDateTime;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.stream.Collectors;
 
 
 @Service
@@ -268,4 +269,30 @@ public class OrderServiceImpl implements OrderService {
         ordersUpdate.setCancelTime(LocalDateTime.now());
         orderMapper.update(ordersUpdate);
     }
+
+    /**
+     * 再来一单
+     * @param id
+     */
+    public void repetition(Long id) {
+        // 根据订单id查询当前订单详情
+        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);
+
+        // 查询当前用户id
+        Long userId = BaseContext.getCurrentId();
+        List<ShoppingCart> shoppingCartList = orderDetailList.stream().map(orderDetail -> {
+            ShoppingCart shoppingCart = new ShoppingCart();
+
+            // 将原订单详情里面的菜品信息重新复制到购物车对象中
+            BeanUtils.copyProperties(orderDetail, shoppingCart);
+            shoppingCart.setUserId(userId);
+            shoppingCart.setCreateTime(LocalDateTime.now());
+
+            return shoppingCart;
+        }).collect(Collectors.toList());
+
+        //将购物车对象批量添加到数据库
+        shoppingCartMapper.insertBatch(shoppingCartList);
+
+    }
 }

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

@@ -2,6 +2,16 @@
 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
 <mapper namespace="com.sky.mapper.ShoppingCartMapper">
+    <insert id="insertBatch">
+        insert into shopping_cart (name, image, user_id
+                                  , dish_id, setmeal_id, dish_flavor, number, amount, create_time)
+        values 
+            <foreach collection="shoppingCartList" item="sc" separator=",">
+                (#{sc.name},#{sc.image},#{sc.userId},#{sc.dishId}
+                ,#{sc.setmealId},#{sc.dishFlavor},#{sc.number},#{sc.amount},
+                #{sc.createTime})
+            </foreach>
+    </insert>
 
 
     <select id="list" resultType="com.sky.entity.ShoppingCart">