visual-studio-2015 - 在Visual Studio中还原时的“unknown keyword platform”

Question

我正在将一个项目从.NET Core RC1转换为RC2。我已经安装了Visual Studio工具预览包，并将VS Nuget插件更新为最新版本。

这是一个测试项目，因此我需要根据library guide将Microsoft.NETCore.App添加到我的project.json中。看起来像这样:

{
  "dependencies": {
    "dotnet-test-xunit": "1.0.0-rc2-build10015",
    "FluentAssertions": "4.2.1",
    "Microsoft.Extensions.PlatformAbstractions": "1.0.0-rc2-final",
    "Microsoft.NETCore.App": {
      "type": "platform",
      "version": "1.0.0-rc2-3002702"
    },
    "xunit": "2.1.0"
  },
  "frameworks": {
    "netcoreapp1.0": {
      "imports": [ "dotnet", "portable-net45+win8" ]
    }
  },
  "testRunner": "xunit",
}

该项目将在命令行(dotnet restore/build)上还原并生成。但是，当Visual Studio尝试还原软件包时，出现此错误:

PATH=.\node_modules\.bin;C:\Program Files (x86)\Microsoft Visual Studio 14.0\Web\External;%PATH%;C:\Program Files (x86)\Microsoft Visual Studio 14.0\Web\External\git
C:\Users\Nate\.dnx\runtimes\dnx-clr-win-x86.1.0.0-rc2-20221\bin\dnx.exe "C:\Users\Nate\.dnx\runtimes\dnx-clr-win-x86.1.0.0-rc2-20221\bin\lib\Microsoft.Dnx.Tooling\Microsoft.Dnx.Tooling.dll" restore "C:\Users\Nate\Documents\stormpath-dotnet-config\test\Stormpath.Configuration.Test"
Microsoft .NET Development Utility Clr-x86-1.0.0-rc2-20221
  CACHE https://api.nuget.org/v3/index.json
Restoring packages for C:\Users\Nate\Documents\stormpath-dotnet-config\test\Stormpath.Configuration.Test\project.json
----------
C:\Users\Nate\Documents\stormpath-dotnet-config\test\Stormpath.Configuration.Test\project.json(0,0): Error: Microsoft.Dnx.Runtime.FileFormatException: unknown keyword platform ---> System.InvalidOperationException: unknown keyword platform
   at Microsoft.Dnx.Runtime.LibraryDependencyType.Parse(String keyword)
   at Microsoft.Dnx.Runtime.ProjectReader.PopulateDependencies(String projectPath, IList`1 results, JsonObject settings, String propertyName, Boolean isGacOrFrameworkReference)
   at Microsoft.Dnx.Runtime.ProjectReader.ReadProject(Stream stream, String projectName, String projectPath, ICollection`1 diagnostics)
   at Microsoft.Dnx.Runtime.Project.TryGetProject(String path, Project& project, ICollection`1 diagnostics)
   --- End of inner exception stack trace ---
   at Microsoft.Dnx.Runtime.Project.TryGetProject(String path, Project& project, ICollection`1 diagnostics)
   at Microsoft.Dnx.Tooling.RestoreCommand.<RestoreForProject>d__69.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Dnx.Tooling.RestoreCommand.<>c__DisplayClass68_0.<<Execute>b__2>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
   at Microsoft.Dnx.Tooling.RestoreCommand.<Execute>d__68.MoveNext()
----------
Restore failed
unknown keyword platform
NuGet Config files used:
    C:\ProgramData\NuGet\Config\Microsoft.VisualStudio.Offline.config
    C:\Users\Nate\AppData\Roaming\NuGet\nuget.config
Feeds used:
    https://api.nuget.org/v3-flatcontainer/
    C:\Users\Nate\Documents\LocalNuget
    C:\Program Files (x86)\Microsoft SDKs\NuGetPackages\

显然，"type": "platform"属性正在淘汰它，但是这不适用于最新的工具版本吗？

Answer 1

Tl; dr -用下面的global.json值更新或替换version。

另外，请确保NuGet是updated。 (感谢小费，吉吉!)

此错误是由global.json中的旧工具版本引起的。如果未更新值(在移植项目时很容易错过)，则即使安装了最新的工具也将莫名其妙地抛出此错误。

对于RC1时代的项目，您的global.json可能看起来像这样:

{
  "projects": [ "src", "test" ],
  "sdk": {
    "version": "1.0.0-rc1-update1"
  }
}

对于.NET Core 1.0 RTM，它应类似于:

{
  "projects": [ "src", "test" ],
  "sdk": {
    "version": "1.0.0-preview2-003121"
  }
}

棘手的部分是，即使version: 1.0.0-rc2-20221 也无法使用!到目前为止，version: 1.0.0-preview2-003121是正确的值。上面的global.json文件将同时与Visual Studio和dotnet build/dotnet run一起还原和编译。