返璞归真 asp.net mvc (5) - Action Filter, UpdateModel, ModelBinder, Ajax, Unit Test-阿里云开发者社区

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返璞归真 asp.net mvc (5) - Action Filter, UpdateModel, ModelBinder, Ajax, Unit Test

简介: 原文:返璞归真 asp.net mvc (5) - Action Filter, UpdateModel, ModelBinder, Ajax, Unit Test[索引页][源码下载] 返璞归真 asp.
原文:返璞归真 asp.net mvc (5) - Action Filter, UpdateModel, ModelBinder, Ajax, Unit Test

[索引页]
[源码下载]


返璞归真 asp.net mvc (5) - Action Filter, UpdateModel, ModelBinder, Ajax, Unit Test


作者:webabcd


介绍
asp.net mvc 之 Action Filter, UpdateModel, ModelBinder, Ajax, Unit Test
  • Action Filter - 在 Controller 层对信息做过滤。如何实现自定义的 Action Filter
  • UpdateModel -  根据参数自动为对象的属性赋值
  • ModelBinder - 定义如何绑定 Model,DefaultModelBinder 实现了 IModelBinder ,其可以根据名称自动将参数赋值到对象对应的属性上
  • Ajax -  在 asp.net mvc 中使用 ajax
  • Unit Test -  在 asp.net mvc 中使用单元测试


示例
1、asp.net mvc 自带的 Action Filter 的演示
FilterDemoController.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Mvc.Ajax;

using MVC.Models;

namespace MVC.Controllers
img_405b18b4b6584ae338e0f6ecaf736533.gifimg_1c53668bcee393edac0d7b3b3daff1ae.gif
{
    
// HandleError - 出现异常时跳转到 Error.aspx(先在指定的 view 文件夹找,找不到再在 Shared 文件夹下找)
    
// 需要 web.config 配置 - <customErrors mode="On" />
    [HandleError]
    
public class FilterDemoController : Controller
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif    
{
        
// 每一个 Filter 都有一个 Order 属性,其用来指定 Filter 的执行顺序

        
// [NonAction] - 当前方法为普通方法,不解析为 Action

        
// [AcceptVerbs(HttpVerbs)] - 调用该 Action 的 http 方法
        
// HttpVerbs 枚举成员如下: HttpVerbs.Get, HttpVerbs.Post, HttpVerbs.Put, HttpVerbs.Delete, HttpVerbs.Head


        ProductSystem ps 
= new ProductSystem();


        
// ActionName() - Action 的名称。默认值同方法名称
        [ActionName("Product")]

        
// ValidateInput() - 相当于 @ Page 的 ValidateRequest, 用于验证请求中是否存在危险代码。可防止 XSS 攻击。默认值为 true
        [ValidateInput(false)]
        
public ActionResult Details(int id)
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif        
{
            var product 
= ps.GetProduct(id);

            
return View("Details", product);
        }


        
// ValidateAntiForgeryToken() - 避免 CSRF 攻击(需要视图页面中使用 Html.AntiForgeryToken())。原理:生成一个随机字符串,将其同时写入 cookie 和 hidden,当 form 提交到 action 时,验证二者是否相等并且验证提交源是否是本站页面(详查 asp.net mvc 的源代码)
        
// 拼 sql 的时候防止 sql 注入:使用 @Parameter 的方式
        [ValidateAntiForgeryToken()]
        
public ActionResult ValidateAntiForgeryTokenTest()
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif        
{
            
return Content("ValidateAntiForgeryToken");
        }


        
// OutputCache() - 缓存。Duration - 缓存秒数。VaryByParam - none, *, 多个参数用逗号隔开
        [OutputCache(Duration = 10, VaryByParam = "none")]
        
// [OutputCache(CacheProfile = "MyCache")] - 通过配置文件对缓存做设置。可以参看 http://www.cnblogs.com/webabcd/archive/2007/02/15/651419.html
        public ActionResult OutputCacheDemo()
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif        
{
            
return Content(DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss"));
        }


        
public ActionResult HandleErrorDemo()
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif        
{
            
throw new Exception("HandleErrorDemo");
        }


        
// Authorize() - 验证。走的是 membership
        [Authorize(Users = "user")]
        
// [Authorize(Roles = "role")]
        
// Request.IsAuthenticated - 返回一个 bool 值,用于指示请求是否通过了验证
        public ActionResult AuthorizeDemo()
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif        
{
            
return Content("Authorize");
        }


        
// 自定义的 Action Filter 的 Demo
        [MyFilter()]
        
public ActionResult MyFilterDemo()
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif        
{
            
return Content("MyFilterDemo" + "<br />");
        }

    }

}


自定的 Action Filter 的实现
MyFilter.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

using System.Web.Mvc;

namespace MVC
img_405b18b4b6584ae338e0f6ecaf736533.gifimg_1c53668bcee393edac0d7b3b3daff1ae.gif
{
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif    
/**//// <summary>
    
/// 自定义的 Action Filter,需要继承 ActionFilterAttribute
    
/// </summary>

    public class MyFilter : ActionFilterAttribute
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif    
{
        
public override void OnActionExecuting(ActionExecutingContext filterContext)
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif        
{
            HttpContext.Current.Response.Write(
"OnActionExecuting" + "<br />");
        }


        
public override void OnActionExecuted(ActionExecutedContext filterContext)
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif        
{
            HttpContext.Current.Response.Write(
"OnActionExecuted" + "<br />");
        }


        
public override void OnResultExecuting(ResultExecutingContext filterContext)
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif        
{
            HttpContext.Current.Response.Write(
"OnResultExecuting" + "<br />");
        }


        
public override void OnResultExecuted(ResultExecutedContext filterContext)
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif        
{
            HttpContext.Current.Response.Write(
"OnResultExecuted" + "<br />");
        }

    }

}


Details.aspx
img_405b18b4b6584ae338e0f6ecaf736533.gifimg_1c53668bcee393edac0d7b3b3daff1ae.gif<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<MVC.Models.Products>" %>

<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
    Details
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
img_405b18b4b6584ae338e0f6ecaf736533.gifimg_1c53668bcee393edac0d7b3b3daff1ae.gif    
<% Html.BeginForm("ValidateAntiForgeryTokenTest""FilterDemo"); %>
    
<%= Html.AntiForgeryToken() %>
    
<h2>
        Details
</h2>
    
<p>
        
<strong>ProductID:</strong>
        
<%= Html.Encode(Model.ProductID) %>
    
</p>
    
<p>
        
<strong>ProductName:</strong>
        
<%= Html.Encode(Model.ProductName) %>
    
</p>
    
<p>
        
<input type="submit" name="btnSubmit" value="submit" />
    
</p>
img_405b18b4b6584ae338e0f6ecaf736533.gifimg_1c53668bcee393edac0d7b3b3daff1ae.gif    
<% Html.EndForm(); %>
</asp:Content>


2、应用 UpdateModel 的 Demo
UpdateModelController.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Mvc.Ajax;

namespace MVC.Controllers
img_405b18b4b6584ae338e0f6ecaf736533.gifimg_1c53668bcee393edac0d7b3b3daff1ae.gif
{
    
public class UpdateModelController : Controller
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif    
{
        
public ActionResult Details(string name, int age)
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif        
{
            User user 
= new User();

            
// UpdateModel() 和 TryUpdateModel() - 系统根据参数自动为对象的属性赋值

            
base.UpdateModel(user); // 失败抛异常
            
// base.TryUpdateModel(user); // 失败不抛异常

            ViewData.Model 
= user;

            
return View();
        }

    }

}


Details.aspx
img_405b18b4b6584ae338e0f6ecaf736533.gifimg_1c53668bcee393edac0d7b3b3daff1ae.gif<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<MVC.Controllers.User>" %>

<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
    Details
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
    
<h2>
        Details
</h2>
    
<p>
        
<strong>UserId:</strong>
        
<%= Model.ID %>
    
</p>
    
<p>
        
<strong>Name:</strong>
        
<%= Model.Name%>
    
</p>
    
<p>
        
<strong>Age:</strong>
        
<%= Model.Age%>
    
</p>
</asp:Content>


3、演示什么是 ModelBinder
ModelBinderController.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Mvc.Ajax;

namespace MVC.Controllers
img_405b18b4b6584ae338e0f6ecaf736533.gifimg_1c53668bcee393edac0d7b3b3daff1ae.gif
{
    
public class ModelBinderController : Controller
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif    
{
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif        
/**//// <summary>
        
/// 路由过来的或者参数过来的,会自动地赋值到对象的对应的属性上
        
/// 做这个工作的就是实现了 IModelBinder 接口的 DefaultModelBinder
        
/// </summary>

        public ActionResult Details(User user)
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif        
{
            
base.ViewData.Model = user;

            
// ModelState - 保存 Model 的状态,包括相应的错误信息等
            if (!base.ModelState.IsValid)
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif            
{
                
foreach (var state in ModelState)
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif                
{
                    
if (!base.ModelState.IsValidField(state.Key))
                        ViewData[
"errorMsg"= state.Key + "/" + state.Value.Value.AttemptedValue + "<br />";
                }

            }


            
return View();
        }

    }

}


Details.aspx
img_405b18b4b6584ae338e0f6ecaf736533.gifimg_1c53668bcee393edac0d7b3b3daff1ae.gif<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage" %>

<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
    Details
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
    
<h2>
        Details
</h2>
img_405b18b4b6584ae338e0f6ecaf736533.gifimg_1c53668bcee393edac0d7b3b3daff1ae.gif    
<% var model = ((MVC.Controllers.User)ViewData.Model); %>
    
<p>
        
<strong>UserId:</strong>
        
<%= model.ID %>
    
</p>
    
<p>
        
<strong>Name:</strong>
        
<%= model.Name %>
    
</p>
    
<p>
        
<strong>Age:</strong>
        
<%= model.Age %>
    
</p>
    
<p>
        
<strong>error:</strong>
        
<%= ViewData["errorMsg"%>
    
</p>
</asp:Content>


4、使用 ajax 的 Demo
    <p>
        Ajax
        
        
<script src="http://www.cnblogs.com/Scripts/MicrosoftAjax.debug.js" type="text/javascript"></script>
        
<script src="http://www.cnblogs.com/Scripts/MicrosoftMvcAjax.debug.js" type="text/javascript"></script>
                       
        
<br />
        
        
<!-- AjaxHelper 简要说明 -->
        
<%= Ajax.ActionLink(
                
"ProductId 为 1 的详情页",
                
"Details",
                
"Product",
                
new { id = 1 },
                
new AjaxOptions { UpdateTargetId = "ajax" }
            )
        
%> 
    
</p>
    
<div id="ajax" />


5、在 VS 中做单元测试
ProductControllerTest.cs
using MVC.Controllers;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using Microsoft.VisualStudio.TestTools.UnitTesting.Web;
using System.Web.Mvc;

using MVC.Models;
using System.Collections.Generic;

namespace MVC.Tests
img_405b18b4b6584ae338e0f6ecaf736533.gifimg_1c53668bcee393edac0d7b3b3daff1ae.gif
{
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif    
/**//// <summary>
    
///这是 ProductControllerTest 的测试类,旨在
    
///包含所有 ProductControllerTest 单元测试
    
///</summary>

    [TestClass()]
    
public class ProductControllerTest
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif    
{
        
private TestContext testContextInstance;

img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif        
/**//// <summary>
        
///获取或设置测试上下文,上下文提供
        
///有关当前测试运行及其功能的信息。
        
///</summary>

        public TestContext TestContext
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif        
{
            
get
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif            
{
                
return testContextInstance;
            }

            
set
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif            
{
                testContextInstance 
= value;
            }

        }


img_7a2b9a960ee9a98bfd25d306d55009f8.gifimg_2887d91d0594ef8793c1db92b8a1d545.gif        
附加测试属性#region 附加测试属性
        
// 
        
//编写测试时,还可使用以下属性:
        
//
        
//使用 ClassInitialize 在运行类中的第一个测试前先运行代码
        
//[ClassInitialize()]
        
//public static void MyClassInitialize(TestContext testContext)
        
//{
        
//}
        
//
        
//使用 ClassCleanup 在运行完类中的所有测试后再运行代码
        
//[ClassCleanup()]
        
//public static void MyClassCleanup()
        
//{
        
//}
        
//
        
//使用 TestInitialize 在运行每个测试前先运行代码
        
//[TestInitialize()]
        
//public void MyTestInitialize()
        
//{
        
//}
        
//
        
//使用 TestCleanup 在运行完每个测试后运行代码
        
//[TestCleanup()]
        
//public void MyTestCleanup()
        
//{
        
//}
        
//
        #endregion



img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif        
/**//// <summary>
        
///Index 的测试
        
///</summary>

        // TODO: 确保 UrlToTest 属性指定一个指向 ASP.NET 页的 URL(例如,
        
// http:///Default.aspx)。这对于在 Web 服务器上执行单元测试是必需的,
        
//无论要测试页、Web 服务还是 WCF 服务都是如此。
        [TestMethod()]
        [HostType(
"ASP.NET")]
        [AspNetDevelopmentServerHost(
"C:\\MVC\\MVC""/")]
        [UrlToTest(
"http://localhost:2005/")]
        
public void IndexTest()
img_2887d91d0594ef8793c1db92b8a1d545.gifimg_7a2b9a960ee9a98bfd25d306d55009f8.gif        
{
            ProductController target 
= new ProductController(); // TODO: 初始化为适当的值
            int pageIndex = 0// TODO: 初始化为适当的值

            ViewResult actual;
            actual 
= target.Index(pageIndex) as ViewResult;

            Assert.AreNotEqual(actual.ViewData.Model 
as List<Products>null);
        }

    }

}



OK
[源码下载]

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