ASP.NET MVC 5 使用autofac实现DI

https://www.cnblogs.com/LittleFeiHu/p/6155883.html

 

ASP.NET MVC 5 使用autofac实现DI

• 使用Nuget添加Autofac.MVC的引用
• 启动项设置
• 注册Controller
• 注册ModelBinder
• 注册相关的web abstraction
• 为View层启用属性注入
• 为Action Filter启用属性注入

 

   使用Nuget添加Autofac.MVC的引用

        

 启动项设置

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protected void Application_Start()        {            AreaRegistration.RegisterAllAreas();            RouteConfig.RegisterRoutes(RouteTable.Routes);                  var builder = new ContainerBuilder();              builder.RegisterType().As();            builder.RegisterType().As();              // Register your MVC controllers. (MvcApplication is the name of            // the class in Global.asax.)            builder.RegisterControllers(typeof(MvcApplication).Assembly);              // OPTIONAL: Register model binders that require DI.            builder.RegisterModelBinders(typeof(MvcApplication).Assembly);            builder.RegisterModelBinderProvider();              // OPTIONAL: Register web abstractions like HttpContextBase.            builder.RegisterModule();              // OPTIONAL: Enable property injection in view pages.            builder.RegisterSource(new ViewRegistrationSource());              // OPTIONAL: Enable property injection into action filters.            builder.RegisterFilterProvider();              // Set the dependency resolver to be Autofac.            var container = builder.Build();            DependencyResolver.SetResolver(new AutofacDependencyResolver(container));        }

 注册Controller

1. 注册当前程序集下的所有Controller

   1. builder.RegisterControllers(typeof(MvcApplication).Assembly);

2. 注册单个Controller

   1. builder.RegisterType().InstancePerRequest();

  注册ModelBinder

1. 在启动项中注册ModelBinder

   1. builder.RegisterModelBinders(typeof(MvcApplication).Assembly);
      builder.RegisterModelBinderProvider();

2. 自定义ModelBinder并且设置ModelBinderTypeAttribute

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[ModelBinderType(typeof(Book))] public class BookModelBinder : IModelBinder {    public ILogger logger;   public BookModelBinder(ILogger logger)     {         this.logger = logger;     }     public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)     {         HttpRequestBase request = controllerContext.HttpContext.Request;                 string title = request.Form.Get("Title");         string BookID = request.Form.Get("BookID");         string day = request.Form.Get("Day");         string month = request.Form.Get("Month");         string year = request.Form.Get("Year");           return new Book { BookID=BookID, Title=title+":DI Test"+this.logger.Log("dsa")+request.Form.Get("HttpRequestBaseDI"), Date=year+"-"+month+"-"+day };     }   }

 注册相关的Web Abstract Class

1. 启动项设置

   // OPTIONAL: Register web abstractions like HttpContextBase.
     builder.RegisterModule();

2. 实例（在ModelBinder中使用HttpRequestBase）

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[ModelBinderType(typeof(Book))]  public class BookModelBinder : IModelBinder  {     ILogger logger;     HttpRequestBase request1;    public BookModelBinder(ILogger logger, HttpRequestBase request)      {          this.logger = logger;          this.request1 = request;      }      public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)      {          HttpRequestBase request = controllerContext.HttpContext.Request;          request = request1;          string title = request.Form.Get("Title");          string BookID = request.Form.Get("BookID");          string day = request.Form.Get("Day");          string month = request.Form.Get("Month");          string year = request.Form.Get("Year");            return new Book { BookID=BookID, Title=title+":DI Test"+this.logger.Log("dsa")+request.Form.Get("HttpRequestBaseDI"), Date=year+"-"+month+"-"+day };      }    }

 在View层实现属性注入

1. 启动项设置

   builder.RegisterSource(new ViewRegistrationSource());

2. 实现自定义的ViewPage

   这里的例子使用的是一个强类型的View，所以实现了一个泛型ViewPage

    public abstract class CustomViewPage : WebViewPage
       {
           public ILogger Logger { get; set; }
       } 
3. View设置

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@inherits MVC5Practices.Infrastructure.CustomViewPage   @{     Layout = null; }         "viewport" content="width=device-width" />                    Book          @Logger.Log("dsa")                  class="dl-horizontal">                              @Html.DisplayNameFor(model => model.Title)                                                 @Html.DisplayFor(model => model.Title)                                                 @Html.DisplayNameFor(model => model.Date)                                                 @Html.DisplayFor(model => model.Date)                                               @Html.ActionLink("Edit", "Edit", new { id = Model.BookID }) |         @Html.ActionLink("Back to List", "Index")

 为ActionFilter启用属性设置

1. 启动项设置

   // OPTIONAL: Enable property injection into action filters.
   builder.RegisterFilterProvider();

2. 自定义Filter

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public class CustomActionFilter : ActionFilterAttribute    {        public ILogger Logger { get; set; }          public override void OnActionExecuting(ActionExecutingContext filterContext)        {            Logger.Log("OnActionExecuting");        }    }