vsts将.net标准2打包成nuget

Question

我一直在尝试在VSTS构建过程中将这个nuget包打包一整天。它是.net标准2.0项目

这是我一直遇到的错误之一

Unable to cast object of type 'System.String' to type 'NuGet.Frameworks.NuGetFramework'.

这是在尝试打包时从控制台打印出来的。

******************************************************************************
Starting: NuGet pack
******************************************************************************
==============================================================================
Task         : NuGet
Description  : Restore, pack, or push NuGet packages, or run a NuGet command. Supports NuGet.org and authenticated feeds like Package Management and MyGet. Uses NuGet.exe and works with .NET Framework apps. For .NET Core and .NET Standard apps, use the .NET Core task.
Version      : 2.0.15
Author       : Microsoft Corporation
Help         : [More Information](https://go.microsoft.com/fwlink/?LinkID=613747)
==============================================================================
C:\Windows\system32\chcp.com 65001
Active code page: 65001
Attempting to pack file: d:\a\1\s\MyProject.Core.Framework.Logging\MyProject.Core.Framework.Logging.csproj
d:\a\_tool\NuGet\4.1.0\x64\nuget.exe pack d:\a\1\s\MyProject.Core.Framework.Logging\MyProject.Core.Framework.Logging.csproj -NonInteractive -OutputDirectory d:\a\1\a -Properties Configuration=release -Verbosity Detailed
NuGet Version: 4.1.0.2450
Attempting to build package from 'MyProject.Core.Framework.Logging.csproj'.
MSBuild auto-detection: using msbuild version '15.4.8.50001' from 'C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\15.0\bin'. Use option -MSBuildVersion to force nuget to use a specific version of MSBuild.
Packing files from 'd:\a\1\s\MyProject.Core.Framework.Logging\bin\release\netstandard2.0'.
Using 'MyProject.Core.Framework.Logging.1.0.0.nuspec' for metadata.
Add file 'd:\a\1\s\MyProject.Core.Framework.Logging\bin\release\netstandard2.0\MyProject.Core.Framework.Logging.dll' to package as 'lib\netstandard2.0\MyProject.Core.Framework.Logging.dll'
System.InvalidCastException: Unable to cast object of type 'System.String' to type 'NuGet.Frameworks.NuGetFramework'.
   at NuGet.ProjectManagement.NuGetProject.GetMetadata[T](String key)
   at NuGet.ProjectManagement.PackagesConfigNuGetProject..ctor(String folderPath, Dictionary`2 metadata)
   at CallSite.Target(Closure , CallSite , Type , Object , Dictionary`2 )
   at System.Dynamic.UpdateDelegates.UpdateAndExecute3[T0,T1,T2,TRet](CallSite site, T0 arg0, T1 arg1, T2 arg2)
   at NuGet.CommandLine.ProjectFactory.AddDependencies(Dictionary`2 packagesAndDependencies)
   at NuGet.CommandLine.ProjectFactory.ProcessDependencies(PackageBuilder builder)
   at NuGet.CommandLine.ProjectFactory.CreateBuilder(String basePath, NuGetVersion version, String suffix, Boolean buildIfNeeded, PackageBuilder builder)
   at NuGet.Commands.PackCommandRunner.BuildFromProjectFile(String path)
   at NuGet.CommandLine.PackCommand.ExecuteCommand()
   at NuGet.CommandLine.Command.ExecuteCommandAsync()
   at NuGet.CommandLine.Command.Execute()
   at NuGet.CommandLine.Program.MainCore(String workingDirectory, String[] args)
Error: d:\a\_tool\NuGet\4.1.0\x64\nuget.exe failed with return code: 1
An error ocurred while trying to pack the files.

这里是nuspec文件

<?xml version="1.0" encoding="utf-8"?>
<package xmlns="http://schemas.microsoft.com/packaging/2012/06/nuspec.xsd">
  <metadata>
    <id>MyrProject.Core.Framework.Logging</id>
    <version>1.0.0</version>
    <authors>Christian Green</authors>
    <owners>Christian Green</owners>
    <requireLicenseAcceptance>false</requireLicenseAcceptance>
    <projectUrl>https://MyrProject.visualstudio.com/MyrProject Core Frameworks/_wiki?pagePath=/MyrProject-Core-Frameworks</projectUrl>
    <iconUrl>http://MyrProject.com/application/files/cache/c169905894409716427e11acc3bdc2df.png</iconUrl>
    <description>Package Description</description>
    <dependencies>
      <group targetFramework=".NETStandard2.0">
        <dependency id="log4net" version="2.0.8" exclude="Build,Analyzers" />
        <dependency id="Microsoft.EntityFrameworkCore.SqlServer" version="2.0.0" exclude="Build,Analyzers" />
      </group>
    </dependencies>
  </metadata>
</package>

我也在nuspec文件中尝试过$ version。

我选择了所有自动包版本控制选项，但我总是遇到一些错误。

如果需要，我可以提供更多详细信息。

Answer 1

Need to use dotnet pack command.

Answer 2

您不需要“ dotnet pack”，仍然可以使用“ msbuild pack”来实现。 但是您需要使用“ Nuget-Toolinstaller”插入一个额外的步骤，以指定Nuget-Version> = 4.3。有关如何操作的信息，请参见https://stackoverflow.com/a/53614798/2412853。

此外，您可能希望坚持使用<5.0.0版本。 为此，您可以指定4.x >=4.3。该问题似乎已在4.3.0中解决。