[Asp.net 5] ApplicationBuilder详解

ApplicationBuilder(IApplicationBuilder接口)，是OWIN的基础，而且里面都是代理、代理的代理，各种lambda表达式，估计要看这部分代码，很多人得头昏脑涨。今天就对个类以及几个扩展方法进行讲解。

按惯例先贴代码（这是我修改后的，将接口继承去掉了、HttpContext类修改成自己的MyHttpContext类）

public class ApplicationBuilder  {    private readonly IList<Func<RequestDelegate, RequestDelegate>> _components = new List<Func<RequestDelegate, RequestDelegate>>();    public ApplicationBuilder() { }    private ApplicationBuilder(ApplicationBuilder builder)    {    }    public ApplicationBuilder Use(Func<RequestDelegate, RequestDelegate> middleware)    {      _components.Add(middleware);      return this;    }    public ApplicationBuilder New()    {      return new ApplicationBuilder(this);    }    public RequestDelegate Build()    {      RequestDelegate app = context =>      {        context.StatusCode = "404";        System.Console.WriteLine("404");        return Task.FromResult(0);      };      foreach (var component in _components.Reverse())      {        app = component(app);      }      return app;    }  }

原标题：[Asp.net 5] ApplicationBuilder详解

关键词：ASP.NET