ASP.NET MVC & Web API项目中集成MEF

//WebApi需要实现的接口
System.Web.Http.Dependencies.IDependencyResolver
//MVC需要实现的接口
System.Web.Mvc.IDependencyResolver

public class MefDependencySolver : System.Web.Http.Dependencies.IDependencyResolver, System.Web.Mvc.IDependencyResolver
{
//实现接口方法
}

var catalog = new DirectoryCatalog(AppDomain.CurrentDomain.SetupInformation.PrivateBinPath);
var resolver = new MefDependencyResolver(catalog);
// Install MEF dependency resolver for MVC
DependencyResolver.SetResolver(resolver);
// Install MEF dependency resolver for Web API
System.Web.Http.GlobalConfiguration.Configuration.DependencyResolver = resolver;