MVC项目实践,在三层架构下实现SportsStore-07,实现订单提交

SportsStore是《精通ASP.NET MVC3框架(第三版)》中演示的MVC项目，在该项目中涵盖了MVC的众多方面，包括：使用DI容器、URL优化、导航、分页、购物车、订单、产品管理、图像上传......是不错的MVC实践项目，但该项目不是放在多层框架下开发的，离真实项目还有一段距离。本系列将尝试在多层框架下实现SportsStore项目，并用自己的方式实现一些功能。

本篇为系列第七篇，包括：

■ 9、实现订单提交

9、实现订单提交

首先在购物车显示页面Cart/Index.cshtml中，添加结账按钮：

@model MySportsStore.WebUI.Models.CartIndexViewModel

@{
    ViewBag.Title = "Index";
    Layout = "~/Views/Shared/_Layout.cshtml";
}

<table width="50%" align="left">
    <thead>
        <tr>
            <th align="left">产品名称</th>
            <th align="center">数量</th>
            <th align="right">单价</th>
            <th align="right">小计</th>
            <th></th>
        </tr>
    </thead>
    <tbody>
        @foreach (var line in Model.Cart.Lines)
        {
            <tr>
                <td align="left">@line.Product.Name</td>
                <td align="center">@line.Quantity</td>
                <td align="right">@line.Product.Price.ToString("c")</td>
                <td align="right">@((line.Quantity * line.Product.Price).ToString("c"))</td>
                <td>
                    @using (Html.BeginForm("RemoveFromCart", "Cart"))
                    {
                        @Html.Hidden("Id", line.Product.Id)
                        @Html.HiddenFor(x => x.ReturnUrl)
                        <input class="actionButtons" type="submit" value="移除"/>
                    }
                </td>
            </tr>
        }
    </tbody>
    <tfoot>
        <tr>
            <td colspan="3" align="right">总计：</td>
            <td align="right">@Model.Cart.ComputeTotalValue().ToString("c")</td>
        </tr>
    </tfoot>
</table>
<p align="left" class="actionButtons" style="width: 100%;clear: both">
    <a href="@Model.ReturnUrl">继续购物</a>
    @Html.ActionLink("结账","CheckOut")
</p>

点击结账，跳转到一个视图页面，填写必要的联系方式等信息，其对应的模型为：

using System.ComponentModel.DataAnnotations;

namespace MySportsStore.Model
{
    public class ShippingDetail
    {
        [Required(ErrorMessage = "必填")]
        [Display(Name = "姓名")]
        public string Name { get; set; }

        [Required(ErrorMessage = "必填")]
        [Display(Name = "地址")]
        public string Line { get; set; }
    }
}

订单提交页Cart/CheckOUt.cshtml：

@model MySportsStore.Model.ShippingDetail

@{
    ViewBag.Title = "CheckOut";
    Layout = "~/Views/Shared/_Layout.cshtml";
}

<h2>填写地址等信息</h2>

@using (Html.BeginForm())
{
    @Html.LabelFor(m => m.Name)
    @Html.EditorFor(m => m.Name)
    @Html.ValidationMessageFor(m => m.Name)
    <br/><br/>
    @Html.LabelFor(m => m.Line)
    @Html.EditorFor(m => m.Line)
    @Html.ValidationMessageFor(m => m.Line)

    <p align="center">
        <input class="actionButtons" type="submit" value="提交订单"/>
    </p>
}

运行：

在为Cart控制器添加处理订单的方法之前，我们首先定义一个处理订单的接口：

using MySportsStore.Model;
using MySportsStore.WebUI.Models;

namespace MySportsStore.WebUI.Abstract
{
    public interface IOrderProcessor
    {
        void ProcessOrder(Cart cart, ShippingDetail shippingDetail);

    }
}

假设，我们希望在接到订单时发邮件给管理员，创建一个实现IOrderProcessor的类：

using System.Net;
using System.Net.Mail;
using System.Text;
using MySportsStore.WebUI.Abstract;

namespace MySportsStore.WebUI.Concrete
{
    public class EmailOrderProcessor : IOrderProcessor
    {
        public void ProcessOrder(Models.Cart cart, Model.ShippingDetail shippingDetail)
        {
            MailMessage mailMsg = new MailMessage();
            mailMsg.From = new MailAddress("[email protected]");
            mailMsg.To.Add(new MailAddress("76419[email protected]"));
            mailMsg.Subject = "新订单";          

            //邮件内容主体
            StringBuilder body = new StringBuilder();
            body.AppendLine("接收到一个新订单：");
            body.AppendLine("<br />");
            body.AppendLine("订购商品包括：");
            body.AppendLine("<br />");
            foreach (var line in cart.Lines)
            {
                var subTotal = line.Product.Price * line.Quantity;
                body.AppendFormat("{0}*{1}(小计：{2:c})", line.Quantity, line.Product.Name, subTotal);
                body.AppendLine("<br />");
            }
            body.AppendFormat("总计:{0:c}", cart.ComputeTotalValue());
            body.AppendLine("<br />");
            body.AppendLine("收货人信息：");
            body.AppendLine(shippingDetail.Name);
            body.AppendLine(shippingDetail.Line);
            body.AppendLine("<br />");

            mailMsg.Body = body.ToString();
            mailMsg.IsBodyHtml = true;
            SmtpClient smtpClient = new SmtpClient("smtp.sina.com");
            smtpClient.Credentials = new NetworkCredential("some username", "some password");

            smtpClient.Send(mailMsg);
        }
    }
}

把接口IOrderProcessor和实现类EmailOrderProcessor交给Ninject来实现，以便依赖注入：

private void AddBindings()
        {
            ninjectKernel.Bind<IProductService>().To<ProductService>();
            ninjectKernel.Bind<IOrderProcessor>().To<EmailOrderProcessor>();
        }

现在可以在Cart控制器中添加处理订单的逻辑：

using System.Linq;
using System.Web.Mvc;
using MySportsStore.IBLL;
using MySportsStore.Model;
using MySportsStore.WebUI.Abstract;
using MySportsStore.WebUI.Models;
using Ninject;

namespace MySportsStore.WebUI.Controllers
{
    public class CartController : BaseController
    {
        [Inject]
        public IProductService ProductService { get; set; }

        [Inject]
        public IOrderProcessor OrderProcessor { get; set; }

        public CartController()
        {
            this.AddDisposableObject(ProductService);
            this.AddDisposableObject(OrderProcessor);
        }

        public ViewResult CheckOut()
        {
            return View(new ShippingDetail());
        }

        [HttpPost]
        public ViewResult CheckOut(Cart cart, ShippingDetail shippingDetail)
        {
            if (cart.Lines.Count() == 0)
            {
                ModelState.AddModelError("","购物车为空");
            }
            if (ModelState.IsValid)
            {
                OrderProcessor.ProcessOrder(cart, shippingDetail);
                cart.Clear();
                return View("Completed");
            }
            else
            {
                return View(shippingDetail);
            }
        }
        ......

    }
}

订单提交成功后，显示Cart/Completed.cshtml视图：

@{
    ViewBag.Title = "Completed";
    Layout = "~/Views/Shared/_Layout.cshtml";
}

<h2>谢谢惠顾~~</h2>

运行，点击提交显示：

管理员收到邮件：

至此，订单处理结束。

“MVC项目实践,在三层架构下实现SportsStore”系列包括：

MVC项目实践,在三层架构下实现SportsStore-01,EF Code First建模、DAL层等

MVC项目实践,在三层架构下实现SportsStore-02,DbSession层、BLL层

MVC项目实践,在三层架构下实现SportsStore-03,Ninject控制器工厂等

MVC项目实践,在三层架构下实现SportsStore-04,实现分页

MVC项目实践,在三层架构下实现SportsStore-05,实现导航

MVC项目实践,在三层架构下实现SportsStore-06,实现购物车

MVC项目实践,在三层架构下实现SportsStore-07,实现订单提交

MVC项目实践,在三层架构下实现SportsStore-08,部署到IIS服务器

MVC项目实践,在三层架构下实现SportsStore-07,实现订单提交