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

我有这个 .NET Standard 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.

里面我想做的:

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 添加到项目中的包.

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

有没有办法解决这个问题，我是否遗漏了什么?

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，因为您包含了asp.net-core-3.1"标签.

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，您需要针对 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 文档 页面)

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" />

参考:在类库中使用 ASP.NET Core API

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