【MVC整理】1.使用 StructureMap 作为 ASP.NET MVC 的 DI 框架

StructureMap 是一个非常灵巧的IOC框架，与asp.net MVC 更是很好的集成。

准备：

下载StructureMap，基本实例中只需要引用StructureMap.dll文件，并引用命名空间StructureMap
下面是我们需要使用IoC的示例代码，我们要创建TestController，希望通过IoC为TestController的构造函数提供Ants.Provider.ICacheProvider的实例对象。

Step1:

用StructureMapControllerFactory代替默认的DefaultControllerFactory，以及StructureMap的初始化，并在Application_Start()进行注册。

1.StructureMapControllerFactory代替默认的DefaultControllerFactory以及StructureMap的初始化

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using System; using System.Web.Mvc; using StructureMap; namespace MvcWeb.Ioc {     //用StructureMap接管MVC中的Controller的创建工作     public class StructureMapControllerFactory : DefaultControllerFactory     {         protected override IController GetControllerInstance(System.Web.Routing.RequestContext requestContext, Type controllerType)         {             if (controllerType == null) return null;               try             {                 return ObjectFactory.GetInstance(controllerType) as Controller;             }             catch (StructureMapException)             {                 System.Diagnostics.Debug.WriteLine(ObjectFactory.WhatDoIHave());                 throw;             }         }              }     //初始化StructureMap，注入相关对象     public class StructureMapInitialize     {         public static void Initialize()         {             ObjectFactory.Initialize(                 x => {                     x.For<Ants.Provider.IAuthenticateProvider>().Singleton().Use<Ants.Provider.CustomAuthenticateProvider>();                     x.For<Ants.Provider.ICacheProvider>().Singleton().Use<Ants.Provider.AspNetCacheProvider>();                                   }                 );        }            } }

2.在Application_Start()进行注册

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protected void Application_Start()         {             AreaRegistration.RegisterAllAreas();               RegisterRoutes(RouteTable.Routes);             //初始化StructureMap             MvcWeb.Ioc.StructureMapInitialize.Initialize();               //注册StructureMapControllerFactory以代替DefaultControllerFactory             ControllerBuilder.Current.SetControllerFactory(new MvcWeb.Ioc.StructureMapControllerFactory());           }

Step2：构建TestControler

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using System.Web.Mvc;   namespace MvcWeb.Controllers {        [HandleError]     public class TestController : Controller     {         //_cache将会被自动注入         private readonly Ants.Provider.ICacheProvider _cache;         public TestController(Ants.Provider.ICacheProvider cache)         {             this._cache = cache;         }           /**********************************************         Test/Cache         **********************************************/         public ActionResult Cache()         {             _cache.Insert("test", "Hello Word");             return Content(_cache.Get("test").ToString());         }     } }

Step3：直接浏览Test/Cache 就可以看到成功的显示“Hello World”.