linux - 找不到框架 'Microsoft.AspNetCore.App'和版本 '5.0.0'。当它安装在$ PATH中时

Question

我正在Manjaro Linux中工作。
我有一个.NET Core项目。当我运行dotnet build .时，该解决方案构建良好
但是，当我运行时:

dotnet-ef update --project Bejebeje.DataAccess --startup-project Bejebeje.Mvc

我收到以下奇怪的错误:

Build started...
Build succeeded.
It was not possible to find any compatible framework version
The framework 'Microsoft.AspNetCore.App', version '5.0.0' was not found.
  - No frameworks were found.

You can resolve the problem by installing the specified framework and/or SDK.

The specified framework can be found at:
 - https://aka.ms/dotnet-core-applaunch?framework=Microsoft.AspNetCore.App&framework_version=5.0.0&arch=x64&rid=manjaro-x64

这很奇怪，因为我已经安装了.NET 5.0的SDK和运行时。

bejebeje|feature/upgrade-to-net-5 ⇒ dotnet --list-sdks
3.1.108 [/usr/share/dotnet/sdk]
5.0.103 [/usr/share/dotnet/sdk]
bejebeje|feature/upgrade-to-net-5 ⇒ dotnet --list-runtimes
Microsoft.NETCore.App 3.1.8 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
Microsoft.NETCore.App 5.0.3 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
bejebeje|feature/upgrade-to-net-5 ⇒

为什么会这样呢？我该怎么做才能解决问题？

Answer 1

我有同样的问题。您需要有一个 ASP.NET 运行时。
这有点令人困惑，容易被忽略，但是它说您需要一个Microsoft. AspNetCore .App运行时，并且dotnet --list-runtimes仅列出Microsoft. NETCore .App s。
ArchWiki提到:

This is caused because the runtime is shipped as a separate package in Arch. You just need to make sure you have the aspnet-runtime package installed as well.

要安装.NET 5运行时，请执行以下操作:

sudo pacman -Sy aspnet-runtime

或者如果您需要3.1版本:

sudo pacman -Sy aspnet-runtime-3.1

现在有一个ASP运行时可用:

$ dotnet --list-runtimes
Microsoft.AspNetCore.App 5.0.4 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]  # <<<
Microsoft.NETCore.App 5.0.4 [/usr/share/dotnet/shared/Microsoft.NETCore.App]