msbuild - 带有 netstandard2.0 引用的 .net 4.8 项目将不会通过 msbuild 构建

Question

该解决方案在 VS2019 中构建良好，但是当我们构建代理上的 msbuild 获得我们的解决方案时，它提示对我们的几个 dll 的引用。
我刚刚添加了对引入 netstandard 2.0 依赖项的 NuGet 包的引用，所以这似乎是问题所在。
我注意到，如果我进入构建服务器并在 VS FIRST 中构建解决方案......然后相同的 msbuild 命令行将在之后成功。因此，在正常构建情况下，这些网络标准 dll 的构建似乎确实如此，以便它们可以包含在其他项目编译中。

F:\Agents\MyAgent_work\18\s\src\WS_Reports.metaproj : warning MSB3268: The primary reference "F:\Agents\MyAgent_work\18\b\My.Project\My.Project.dll" could not be resolved because it has an indirect dependency on the framework assembly "netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51" which could not be resolved in the currently targeted framework. ".NETFramework,Version=v4.8". To resolve this problem, either remove the reference "F:\Agents\MyAgent_work\18\b\My.Project\My.Project.dll" or retarget your application to a framework version which contains "netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51".

这是 msbuild 引发错误的项目的解决方案文件声明....可以看到项目对错误中显示的 dll 的引用(上面的示例)。请注意，这个项目和我将新的 netstandard2.0 包添加到目标框架 v4.8 的项目

Project("{E24C65DC-7377-472B-9ABA-BC803B73C61A}") = "WS.Reports", "WebServices\WS.Reports\", "{C47BAAE6-0708-4D43-83B8-92405B31A3E0}"
    ProjectSection(WebsiteProperties) = preProject
        SccProjectName = "SAK"
        SccAuxPath = "SAK"
        SccLocalPath = "SAK"
        SccProvider = "SAK"
        TargetFrameworkMoniker = ".NETFramework,Version%3Dv4.8"
        ProjectReferences = "{2222173A-112A-44F8-A614-C7CCBDACEFE8}|My.Project.Bus.dll;{222924FE-877B-4E18-B960-94DED3DB6DF2}|MyProject.Protocols.Shared.dll;{222F5846-55E6-4541-B43B-E49674963E02}|MyProject.AuthProtocols.dll;{2224BC03-6C7E-4E15-B158-D9BD03D0E8B3}|My.Project.dll;{222BAF47-1C9F-4A56-9152-B4240A188612}|My.Project.Images.dll;{222FE788-27B1-4B03-B052-BCFFF251C15A}|My.Project.Legacy.dll;"
        Debug.AspNetCompiler.VirtualPath = "/WS.Reports"
        Debug.AspNetCompiler.PhysicalPath = "WebServices\WS.Reports\"
        Debug.AspNetCompiler.TargetPath = "PrecompiledWeb\WS.Reports\"
        Debug.AspNetCompiler.Updateable = "true"
        Debug.AspNetCompiler.ForceOverwrite = "true"
        Debug.AspNetCompiler.FixedNames = "false"
        Debug.AspNetCompiler.Debug = "True"
        Release.AspNetCompiler.VirtualPath = "/WS.Reports"
        Release.AspNetCompiler.PhysicalPath = "WebServices\WS.Reports\"
        Release.AspNetCompiler.TargetPath = "PrecompiledWeb\WS.Reports\"
        Release.AspNetCompiler.Updateable = "true"
        Release.AspNetCompiler.ForceOverwrite = "true"
        Release.AspNetCompiler.FixedNames = "false"
        Release.AspNetCompiler.Debug = "False"
        VWDPort = "17515"
        VWDDynamicPort = "false"
        SlnRelativePath = "WebServices\WS.Reports\"
        StartServerOnDebug = "false"
    EndProjectSection
EndProject

也许我需要抛出错误的项目或带有 netstandard 引用的项目以同时针对 v4.8 和 netstandard2.0？

Answer 1

在您的 web.config 文件中，添加对 netstandard 程序集的引用:

<system.web>
  <compilation debug="true" targetFramework="4.8">
    <assemblies>
      <add assembly="netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51"/>
   </assemblies> 
 </compilation>
 <httpRuntime targetFramework="4.8" />
 ...