Question

我正在运行Visual Studio，并尝试使用dotnet核心的Hello World控制台示例。

PS d:\test> dotnet new console --force
The template "Console Application" was created successfully.

Processing post-creation actions...
Running 'dotnet restore' on d:\test\test.csproj...
  Determining projects to restore...
d:\test\test.csproj : error NU1101: Unable to find package Microsoft.AspNetCore.App.Ref. No packages exist with this id in source(s): Microsoft Visual Studio Offline Packages, Package source, Package source 1, Package source 2
  Failed to restore d:\test\test.csproj (in 402 ms).

该示例给出了未找到包的错误：

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

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>netcoreapp3.1</TargetFramework>
  </PropertyGroup>

</Project>

该软件包位于：C：\ Program Files \ dotnet \ packs \ Microsoft.AspNetCore.App.Ref \ 3.1.3 另外，如果我尝试将目标框架更改为2.1，一切正常。

由dotnet命令行创建的默认.csproj文件。

+5ff7b0c9e for .NET Core
Copyright (C) Microsoft Corporation. All rights reserved.

Build started 5/30/2020 6:01:58 PM.

Build succeeded.
    0 Warning(s)
    0 Error(s)

Time Elapsed 00:00:01.71
PS d:\test> dotnet run
d:\test\test.csproj : error NU1101: Unable to find package Microsoft.AspNetCore.App.Ref. No packages exist with this id in source(s): Microsoft Visual Studio Offline Packages, Package source, Package source 1, Package source 2

The build failed. Fix the build errors and run again.

有什么我想念的吗？

编辑：干净运行后输出

PS d：\ test> dotnet干净 Microsoft（R）Build Engine版本16.6.0

train

如果我只是更改'netcore3.1'=>'netcore2.1'，一切正常。

Answer 1

感谢所有建议。

我发现了问题。我的nuget来源列表没有关注者，因此该工具从未在线尝试过用于包装。

https://api.nuget.org/v3/index.json

Hello World dotnet核心示例不起作用

1 个答案: