ASP.NET 5 中所有类型的 http 标头都去了哪里?

Previously, in WebApi (on .NET 4.x) we could work with headers of both the request and the response via typed interfaces (see HttpRequestMessage.Headers/HttpResponseMessage.Headers). Now, in ASP.NET 5 we have HttpRequest and HttpResponse with Headers property of type IHeaderDictionary. But it's just an untyped Dictionary.

下面我举了一个例子，类型化访问可以返回一个微调的 http-response.需要创建一个 HttpResponseMessage 并填充其 Headers 集合(顺便说一句).

Below I put an example with typed accessing could return a fine-tuned http-response. It's needed to create a HttpResponseMessage and fill its Headers collection (which was typed btw).

HttpResponseMessage response = Request.CreateResponse(HttpStatusCode.OK);
response.Content = new StringContent(manifestContent);
response.Content.Headers.ContentType = new MediaTypeHeaderValue("text/cache-manifest");
response.Headers.CacheControl = new CacheControlHeaderValue {NoCache = true, Public = true};
response.Headers.ETag = new EntityTagHeaderValue(""" + etag + """);

推荐答案

如果为Microsoft.AspNetCore.Http添加using语句，HttpRequest 和 HttpResponse 到 GetTypedHeaders，这应该会为您提供所需的类型安全性.

var headers = Response.GetTypedHeaders();
headers.ContentType = new MediaTypeHeaderValue("text/cache-manifest");
headers.CacheControl = new CacheControlHeaderValue { NoCache = true, Public = true };
headers.ETag = new EntityTagHeaderValue(""" + etag + """);