如何在动作过滤器上使用Unity和asp.net mvc执行属性注入？

public interface IMyService
{
    string GetData();
}

public class MyService : IMyService
{
    public string GetData()
    {
        return "Hello from MyService!";
    }
}

public class HomeController : Controller
{
    [Dependency]
    public IMyService MyService { get; set; }

    public ActionResult Index()
    {
        ViewBag.Message = MyService.GetData();
        return View();
    }
}

var container = new UnityContainer();
container.RegisterType<IMyService, MyService>();

public class UnityDependencyAttribute : Attribute, IDependencyResolver
{
    private readonly IUnityContainer _container;

    public UnityDependencyAttribute(IUnityContainer container)
    {
        _container = container;
    }

    public object GetService(Type serviceType)
    {
        try
        {
            return _container.Resolve(serviceType);
        }
        catch
        {
            return null;
        }
    }

    public IEnumerable<object> GetServices(Type serviceType)
    {
        try
        {
            return _container.ResolveAll(serviceType);
        }
        catch
        {
            return new List<object>();
        }
    }
}

var container = new UnityContainer();
container.RegisterType<IMyService, MyService>();

DependencyResolver.SetResolver(new UnityDependencyAttribute(container));