MVC 使用MEF依赖注入的蛋疼问题

[小豪]

最近在用MEF做IOC，遇到两个问题，网上搜不出资料，难道是这个组件都没有人用了？!

1. MVC 自定义Filter，不能注入。
2. 定义了一个父Controller，不能注入。其他controller继承于它。

有解决方案的帮帮忙，谢谢

    [Export]
	[PartCreationPolicy(CreationPolicy.NonShared)]
    public class AdminAuthorizeAttribute : System.Web.Mvc.AuthorizeAttribute

public static class MefConfig
    {
        public static void RegisterMef()
        {
            var container = ConfigureContainer();

            ControllerBuilder.Current.SetControllerFactory(new MefControllerFactory(container));
            
            var dependencyResolver = System.Web.Http.GlobalConfiguration.Configuration.DependencyResolver;
            System.Web.Http.GlobalConfiguration.Configuration.DependencyResolver = new MefDependencyResolver(container);
        }

        private static CompositionContainer ConfigureContainer()
        {
            var catalog = new AggregateCatalog(new DirectoryCatalog(AppDomain.CurrentDomain.SetupInformation.PrivateBinPath));
            var container = new CompositionContainer(catalog);
			
            HttpContext.Current.DisposeOnPipelineCompleted(container);
            return container;
        }
    }

    public class MefDependencyResolver : IDependencyResolver
    {
        private readonly CompositionContainer _container;
        
        public MefDependencyResolver(CompositionContainer container)
        {
            _container = container;
        }

        public IDependencyScope BeginScope()
        {
            return this;
        }

        public object GetService(Type serviceType)
        {
            var export = _container.GetExports(serviceType, null, null).SingleOrDefault();

            return null != export ? export.Value : null;
        }

        public IEnumerable<object> GetServices(Type serviceType)
        {
            var exports =_container.GetExports(serviceType, null, null);
            var createdObjects = new List<object>();
            if (exports.Any())
            {
                foreach (var export in exports)
                {
                    createdObjects.Add(export.Value);
                }
            }

            return createdObjects;
        }

        public void Dispose()
        {

        }
    }

    public class MefControllerFactory : DefaultControllerFactory
    {
        private readonly CompositionContainer _compositionContainer;

        public MefControllerFactory(CompositionContainer compositionContainer)
        {
            _compositionContainer = compositionContainer;
        }

        protected override IController GetControllerInstance(System.Web.Routing.RequestContext requestContext, Type controllerType)
        {
            var export = _compositionContainer.GetExports(controllerType, null, null).SingleOrDefault();

            IController result;

            if (null != export)
            {
                result = export.Value as IController;
            }
            else
            {
                result = base.GetControllerInstance(requestContext, controllerType);
                _compositionContainer.ComposeParts(result);
            }
          
            return result;
        }
    }

[小豪]

顶上

[89蛇]

[Java18]

帮顶

[风一样的大叔]

要注入啥？

[lshfong]

先拦截后再操作