无法访问.net标准中的httpcontext扩展方法 [英] Can't access httpcontext extension methods in .net standard

问题描述

我有一个.NET标准库，我想在其中编写.NET Core中间件.

I have this .NET Standard library where I want to write a .NET Core middleware.

我想在里面做

Endpoint endpoint = httpContext.GetEndpoint();

无法解析 GetEndpoint()扩展方法.

我引用了 Microsoft.AspNetCore.Http ，并且我同时拥有 Microsoft.AspNetCore.Http.Abstractions 和 Microsoft.AspNetCore.Mvc.Core 包已添加到项目中.

I have referenced Microsoft.AspNetCore.Http and I have both Microsoft.AspNetCore.Http.Abstractions and Microsoft.AspNetCore.Mvc.Core packages added to the project.

是否有解决方案，我是否缺少某些东西?

Is there a solution to this, am I missing something?

推荐答案

我假设您正在为ASP.NET Core 3.1编写中间件，因为其中包含了"asp.net-core-3.1"标记.

I assume you're writing a middleware for ASP.NET Core 3.1 since you included the "asp.net-core-3.1" tag.

要使用该扩展名，您需要定位 netcoreapp3.* 而不是 netstandard2.* :

To use that extension, you need to target netcoreapp3.* instead of netstandard2.*:

<TargetFramework>netcoreapp3.1</TargetFramework>

(您可以在您还需要:

1. 使用 Microsoft.NET.Sdk.Web MSBuild SDK:

1. use the Microsoft.NET.Sdk.Web MSBuild SDK:

<Project Sdk="Microsoft.NET.Sdk.Web">

或添加框架参考:

or add the framework reference:

<FrameworkReference Include="Microsoft.AspNetCore.App" />

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