ASP.NET MVC Web应用程序中的控制器是应该调用存储库，服务还是两者？

The controllers in my ASP.NET MVC web app are starting to get a bit bloated with business logic. The examples on the web all show simple controller actions that simply pull data out of a repository and pass it to the view. But what if you also need to support business logic on top of that? The controllers in my ASP.NET MVC web app are s