dotnet aspnet代码生成器工具找不到Microsoft.VisualStudio.Web.CodeGeneration.Design [英] Microsoft.VisualStudio.Web.CodeGeneration.Design not being found by the dotnet aspnet-codegenerator tool

问题描述

我刚刚使用 dotnet new mvc --name test-project ( netcoreapp3.1 )创建了一个MVC应用程序，没有任何数据库访问权限和身份，想要手动添加以进行自定义.然后，我添加了一些软件包以使用 dotnet aspnet-codegenerator 工具.我的 .csproj 看起来像这样:

 < Project Sdk ="Microsoft.NET.Sdk.Web">< PropertyGroup>< TargetFramework> netcoreapp3.1</TargetFramework>< RootNamespace> test_project</RootNamespace></PropertyGroup>< ItemGroup>< PackageReference Include ="Microsoft.VisualStudio.Web.CodeGeneration.Design"；版本="3.1.4"./>< PackageReference Include ="Microsoft.AspNetCore.Identity.EntityFrameworkCore"；版本="3.1.7"./>< PackageReference Include ="Microsoft.AspNetCore.Identity.UI"；版本="3.1.7"./>< PackageReference Include ="Microsoft.EntityFrameworkCore"；版本="3.1.7"./>< PackageReference Include ="Microsoft.EntityFrameworkCore.Design"；版本="3.1.7"< IncludeAssets>运行时；建造;本国的;内容文件;分析仪;buildtransitive</IncludeAssets>< PrivateAssets>全部</PrivateAssets></PackageReference>< PackageReference Include ="Microsoft.EntityFrameworkCore.Tools"；版本="3.1.7"< IncludeAssets>运行时；建造;本国的;内容文件;分析仪;buildtransitive</IncludeAssets>< PrivateAssets>全部</PrivateAssets></PackageReference>< PackageReference Include ="Newtonsoft.Json"；版本="12.0.3"/>< PackageReference Include ="Npgsql.EntityFrameworkCore.PostgreSQL"；版本="3.1.4"./>< PackageReference Include ="Npgsql.EntityFrameworkCore.PostgreSQL.Design"；版本="1.1.0&"/></ItemGroup></Project> 

如您所见， Microsoft.VisualStudio.Web.CodeGeneration.Design 是列表中的第一位.但是，当我尝试通过 dotnet aspnet-codegenerator 工具运行任何脚手架时(例如: dotnet aspnet-codegenerator身份-h )，我收到以下消息:

此项目中没有代码生成器.将Microsoft.VisualStudio.Web.CodeGeneration.Design软件包作为NuGet软件包引用添加到项目中.

即使我使用 -p 标志指定了<​​code> .csproj 文件，我仍然会收到相同的消息.在进行一些研究时，我发现这问题出现在他们的仓库中，但这是另一回事:OP尝试使用3.1脚手架版本将脚手架添加到.NET Core App 3.0.

我正在Xubuntu 20.04上使用dotnet 3.1.401.

有什么想法吗?预先谢谢你.

编辑1 有人认为这将接近我们在此处的功能，但问题是:我知道它的作用，并且我实际上添加了全局工具"在该文章中建议.问题是 aspnet-codegenerator 没有检测到我已经拥有了它需要的东西，已经将它添加到 .csproj 文件中.

编辑1

显然，也有一些人也面临此问题，因此，我提交了问题在他们的仓库中

解决方案

如存储库 maintainer 所述我在问题中上面提到的问题根据运行时/目标更新其软件包:

使用dotnet工具更新dotnet-aspnet-codegenerator -g --version 3.1.5/5.0.2，具体取决于您定位的是.netcoreapp3.1还是net5.0.[...]您还需要更新Microsoft.VisualStudio.Web.CodeGeneration.Design程序包.

I just created an MVC app with dotnet new mvc --name test-project (netcoreapp3.1), without any kind of database access and Identity, which I would like to add by hand for customisation purposes. Then I added some packages in order to use the dotnet aspnet-codegenerator tool. My .csproj looks like this:

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

  <PropertyGroup>
    <TargetFramework>netcoreapp3.1</TargetFramework>
    <RootNamespace>test_project</RootNamespace>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="3.1.4" />
    <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="3.1.7" />
    <PackageReference Include="Microsoft.AspNetCore.Identity.UI" Version="3.1.7" />
    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="3.1.7" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="3.1.7">
      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
      <PrivateAssets>all</PrivateAssets>
    </PackageReference>
    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="3.1.7">
      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
      <PrivateAssets>all</PrivateAssets>
    </PackageReference>
    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="3.1.4" />
    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL.Design" Version="1.1.0" />
  </ItemGroup>
</Project>

As you can see, the Microsoft.VisualStudio.Web.CodeGeneration.Design is the first in the list. However, when I try to run any scaffolder from the dotnet aspnet-codegenerator tool (e.g.: dotnet aspnet-codegenerator identity -h), I get the following message:

No code generators are available in this project.Add Microsoft.VisualStudio.Web.CodeGeneration.Design package to the project as a NuGet package reference.

Even if I specify the .csproj file with the -p flag, I still get the same message. While doing some research, I found this Issue on their repo, but it's a different thing: the OP was trying to add the scaffolder to a .NET Core App 3.0 using the 3.1 scaffolder version.

I'm using dotnet 3.1.401 on Xubuntu 20.04.

Any thoughts? Thank you in advance.

EDIT 1 Some people suggested this would be close to what we have here, but the thing is: I know what it does and I actually added the "global tools" suggested in that article. The problem is the aspnet-codegenerator is not detecting that I already have the library it needs to its things, added to the .csproj file.

EDIT 1

Apparently, there's a couple of people facing this issue as well, so, I filed an issue on their repo

解决方案

As mentioned by the repository maintainer on the issue I mentioned above in the question, one with this problem should update its packages according to the runtime/target:

Use dotnet tool update dotnet-aspnet-codegenerator -g --version 3.1.5/5.0.2 depending on if you are targeting .netcoreapp3.1 or net5.0. [...] You will also need to update the Microsoft.VisualStudio.Web.CodeGeneration.Design package as well.

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