Question

我尝试将依赖项注入控制器的构造函数中，就像我之前一样。问题是我似乎无法让它发挥作用。在使用MVC 4进行DI或者我缺少一些基本要求时是否有任何新要求？

我正在使用：
Ninject.MVC3 3.0.0.6
System.Web.MVC 4.0.0.0

以下是此事的重要部分：

NinjectWebCommon.cs

  public static class NinjectWebCommon{
    private static readonly Bootstrapper bootstrapper = new Bootstrapper();

    /// <summary>
    /// Starts the application
    /// </summary>
    public static void Start() 
    {
        DynamicModuleUtility.RegisterModule(typeof(OnePerRequestHttpModule));
        DynamicModuleUtility.RegisterModule(typeof(NinjectHttpModule));
        bootstrapper.Initialize(CreateKernel);
    }

    /// <summary>
    /// Stops the application.
    /// </summary>
    public static void Stop()
    {
        bootstrapper.ShutDown();
    }

    /// <summary>
    /// Creates the kernel that will manage your application.
    /// </summary>
    /// <returns>The created kernel.</returns>
    private static IKernel CreateKernel()
    {
        var kernel = new StandardKernel();
        kernel.Bind<Func<IKernel>>().ToMethod(ctx => () => new Bootstrapper().Kernel);
        kernel.Bind<IHttpModule>().To<HttpApplicationInitializationHttpModule>();

        RegisterServices(kernel);
        return kernel;
    }

    /// <summary>
    /// Load your modules or register your services here!
    /// </summary>
    /// <param name="kernel">The kernel.</param>
    private static void RegisterServices(IKernel kernel){
        kernel.Bind<Handling.EventHandler>().To<EventDtoHandler>();
        kernel.Bind<CommandHandler>().To<CommandDtoHandler>();
        kernel.Bind<Mapper>().To<DtoMapper>().InSingletonScope();
        kernel.Bind<Serializer>().To<DtoSerializer>();
        kernel.Bind<Deserializer>().To<DtoDeserializer>();
        kernel.Bind<CommandQueue>().To<DeviceCommandQueue>();
        kernel.Bind<Dispatcher>().To<EventDispatcher>();
        kernel.Bind<Instantiator>().To<DtoInstantiator>();
        kernel.Bind<Template>().To<NmsTemplate>().InSingletonScope();
    }   
}

Global.asax中：

 public class Global : HttpApplication {

    protected void Application_Start() {
        AreaRegistration.RegisterAllAreas();

        RegisterRoutes(RouteTable.Routes);
    }

    public static void RegisterRoutes(RouteCollection routes) {
        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
        routes.IgnoreRoute("{*favicon}", new { favicon = @"(.*/)?favicon.ico(/.*)?" });

        routes.MapRoute(
            "Event", // Route name
            "{controller}/{action}/{id}", // URL with parameters
            new { controller = "Event", action = "Event", id = UrlParameter.Optional } // Parameter defaults
        );
    }
}

财务主任：

public class EventController : Controller{
    private readonly EventHandler eventDtoHandler;

    public EventController(EventHandler eventDtoHandler){
        this.eventDtoHandler = eventDtoHandler;
    }

    ...
    Some Actions
    ...
}

我明白了：

[MissingMethodException：没有为此对象定义无参数构造函数。] System.RuntimeTypeHandle.CreateInstance（RuntimeType类型，Boolean publicOnly，Boolean noCheck，Boolean＆amp; canBeCached，RuntimeMethodHandleInternal＆amp; ctor，Boolean＆amp; bNeedSecurityCheck）+0 System.RuntimeType.CreateInstanceSlow（Boolean publicOnly，Boolean skipCheckThis，Boolean fillCache）+98 System.RuntimeType.CreateInstanceDefaultCtor（Boolean publicOnly，Boolean skipVisibilityChecks，Boolean skipCheckThis，Boolean fillCache）+241 System.Activator.CreateInstance（Type type，Boolean nonPublic）+69 System.Web.Mvc.DefaultControllerActivator.Create（RequestContext requestContext，Type controllerType）+67

[InvalidOperationException：尝试创建'Web.Controllers.EventController'类型的控制器时发生错误。确保控制器具有无参数的公共构造函数。] System.Web.Mvc.DefaultControllerActivator.Create（RequestContext requestContext，Type controllerType）+182 System.Web.Mvc.DefaultControllerFactory.GetControllerInstance（RequestContext requestContext，Type controllerType）+80

在我看来，Ninject没有得到ControllerFactory的责任..

通过Ninject对MVC 4中的依赖注入有什么要求？

0 个答案: