Ninject和MVC3：依赖注入动作过滤器 [英] Ninject and MVC3: Dependency injection to action filters

问题描述

我发现如何做到使用Ninject在ASP.NET MVC3的ActionFilter财产注入尚无定论的文章和问题的负载。

I've found loads of inconclusive articles and questions on how to do property injection on an ActionFilter in ASP.NET MVC3 using Ninject.

可能有人给我一个明显的例子吗？

Could someone give me a clear example please?

下面是我的自定义AUTH属性。

Here's my custom auth attribute.

public class CustomAuthorizeAttribute : AuthorizeAttribute
{
    [Inject]
    public IService Service { get; set; }

    [Inject]
    public IAuthenticationHelper AuthenticationHelper { get; set; }

    public override void OnAuthorization(AuthorizationContext filterContext)
    {
         //My custom code
    }
 }

我现在用的是WebActivator设立Ninject

I am using the WebActivator to set up Ninject

[assembly: WebActivator.PreApplicationStartMethod(typeof(MyProject.Web.AppStart_NinjectMvc3), "Start")]

 namespace MyProject.Web {

   public static class AppStart_NinjectMvc3 {
        public static void RegisterServices(IKernel kernel) {

           //Binding things
    }

    public static void Start() {
        // Create Ninject DI Kernel 
        IKernel kernel = new StandardKernel();

        // Register services with our Ninject DI Container
        RegisterServices(kernel);

        // Tell ASP.NET MVC 3 to use our Ninject DI Container 
        DependencyResolver.SetResolver(new NinjectServiceLocator(kernel));
    }

  }
}

我的服务和帮助从来没有注入。我需要做什么改变？

My service and helper are never injected. What do I need to change?

推荐答案

下面是你如何才能够着手：

Here's how you could proceed:

public class MvcApplication : Ninject.Web.Mvc.NinjectHttpApplication
{
    private class MyModule : NinjectModule
    {
        public override void Load()
        {
            Bind<IService>().To<ServiceImpl>();
            Bind<IAuthenticationHelper>().To<AuthenticationHelperImpl>();
        }
    }

    public static void RegisterGlobalFilters(GlobalFilterCollection filters)
    {
        filters.Add(new HandleErrorAttribute());
    }

    public static void RegisterRoutes(RouteCollection routes)
    {
        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

        routes.MapRoute(
            "Default",
            "{controller}/{action}/{id}",
            new { controller = "Home", action = "Index", id = UrlParameter.Optional }
        );
    }

    protected override void OnApplicationStarted()
    {
        AreaRegistration.RegisterAllAreas();

        RegisterGlobalFilters(GlobalFilters.Filters);
        RegisterRoutes(RouteTable.Routes);
    }

    protected override IKernel CreateKernel()
    {
        var modules = new INinjectModule[] {
            new MyModule()
        };
        var kernel = new StandardKernel(modules);
        DependencyResolver.SetResolver(new NinjectDependencyResolver(kernel));
        return kernel;        
    }
}

然后你可以有你的自定义属性授权：

and then you could have your custom authorize attribute:

public class CustomAuthorizeAttribute : AuthorizeAttribute
{
    [Inject]
    public IService Service { get; set; }

    [Inject]
    public IAuthenticationHelper AuthenticationHelper { get; set; }

    public override void OnAuthorization(AuthorizationContext filterContext)
    {
    }
}

和一个控制器动作饰吧：

and a controller action decorated with it:

[CustomAuthorize]
public ActionResult Index()
{
    return View();
}

和依赖应注射。

这篇关于Ninject和MVC3：依赖注入动作过滤器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！