为ASP.NET MVC创建一个基于Unity的ControllerFactory

发布时间：2020-12-16 09:04:23 所属栏目：asp.Net 来源：网络整理

导读：谈到IoC和ASP.NET的集成，很多人会先后想到Ninject，不过我们个人还是倾向于Unity。这篇文章简单地介绍如果创建基于Unity的ControllerFactory。如下面的代码所示，我们通过直接继承DefaultControllerFactory创建一个自定的UnityControllerFactory。构造函数

谈到IoC和ASP.NET的集成，很多人会先后想到Ninject，不过我们个人还是倾向于Unity。这篇文章简单地介绍如果创建基于Unity的ControllerFactory。如下面的代码所示，我们通过直接继承DefaultControllerFactory创建一个自定的UnityControllerFactory。构造函数指定的是配置的UnityContainer的名称，如果没有显式指定则采用默认的UnityContainer。在重写的GetControllerInstance方法中，直接调用IUnityContainer的Resolve方法根据Controller类型创建相应的对象。[源代码从这里下载]

   1: public class UnityControllerFactory: DefaultControllerFactory

   3:     public IUnityContainer Container { get; private set; }

   5:     {

   7:         UnityConfigurationSection configSection = ConfigurationManager.GetSection(UnityConfigurationSection.SectionName) as UnityConfigurationSection;

   9:         {

  11:         }

  13:         string.IsNullOrEmpty(containerName))

  15:             configSection.Configure(container);

  17:         else

  19:             configSection.Configure(container,containerName);

  21:         this.Container = container;

  23:     protected override IController GetControllerInstance(RequestContext requestContext,Type controllerType)

  25:         Guard.ArgumentNotNull(controllerType,"controllerType");

  27:     }

    string Name { get; set; }


       5:     string Address { get; set; }


       7:? 


       9: {


      11: }


      14: {


      16:     {


      19:             Name = "Zhang San",


      21:             Address = "#328,XingHu Street,Su Zhou,Jiang Su Province,PRC."


      23:? 


      25:         {


      29:         };


      31: }

我们在Web应用的主页显示联系人列表，为此我创建了如下一个HomeController。在这里我们演示的是构造器注入，所以我们通过构造函数指定的IContactRepository对象来初始化Repository属性。在Action方法Index中调用IContactRepository的GetAllContacts方法为对应的View指定Model。

public IContactRepository Repository { get; public HomeController(IContactRepository repository)

   7:     }

   9:     {

  11:     }

   1: @model IEnumerable<Artech.Web.Mvc.Extensions.Contact>

   3:     ViewBag.Title = "Index";

5:?

div   9: ul  10: @foreach (var contact in this.Model)

  12:     lih3>@contact.Name  14:         p>Gender: @contact.Gender  15:         >Address: @contact.Address  16:         hr />

  19:   20: >

自定义的UnityContainerFactory的注册定义在Gloable.asax中。初次之外，额外需要做的是忽略掉针对favicon.ico的路由，否则程序运行将会失败。

static void RegisterGlobalFilters(GlobalFilterCollection filters)

   5:         filters.Add(new HandleErrorAttribute());

void RegisterRoutes(RouteCollection routes)

  11:         routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

  14:         );

  16:?

  18:     {

  20:         RegisterGlobalFilters(GlobalFilters.Filters);

  22:?

  24:     }

unity   2:   alias alias="IContactRepository" type="Artech.Web.Mvc.Extensions.IContactRepository,UnityIntegration"    3:   ="DefaultContactRepository" ="Artech.Web.Mvc.Extensions.DefaultContactRepository,1)">/>