SpringBoot电商项目实战Day10 希尔排序

学习目标：

开发订单模块

了解希尔排序的基本原理

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学习内容：

完成了创建订单的接口的开发与测试。

package com.imooc.mall.Service.impl;

import com.imooc.mall.Service.CartService;
import com.imooc.mall.Service.OrderService;
import com.imooc.mall.common.Constant;
import com.imooc.mall.exception.ImoocMallException;
import com.imooc.mall.exception.ImoocMallExceptionEnum;
import com.imooc.mall.filter.UserFilter;
import com.imooc.mall.model.dao.CartMapper;
import com.imooc.mall.model.dao.OrderItemMapper;
import com.imooc.mall.model.dao.OrderMapper;
import com.imooc.mall.model.dao.ProductMapper;
import com.imooc.mall.model.pojo.Order;
import com.imooc.mall.model.pojo.OrderItem;
import com.imooc.mall.model.pojo.Product;
import com.imooc.mall.model.request.CreateOrderReq;
import com.imooc.mall.model.vo.CartVO;
import com.imooc.mall.util.OrderCodeFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework