我有一个ASP。NET MVC5应用程序，昨天工作，现在我得到这个错误时，我试图构建:
该项目引用了这台计算机上缺少的NuGet包。
我已经检查了两个选项，允许nuget自动下载和安装丢失的包检查/打开。我还尝试删除packages文件夹中的所有文件，然后让nuget重新下载它们。另外，当我打开nuget并寻找更新时，它说没有需要安装的。我想不出还能做些什么来解决这个恼人的问题。
我还通过右键单击项目并选择该选项启用了nuget恢复。然后，它添加了一个nuget文件夹和该文件夹中的三个项目，但没有采取任何措施来解决问题。我已经尝试重新构建，但仍然得到相同的错误。
当前回答
对我来说，它的工作，因为我只是复制了一个。nuget文件夹从一个工作解决方案到现有的，并引用它的内容!
其他回答
我创建了一个名为'的文件夹。解决方案根文件夹中的Nuget 然后添加文件'NuGet。配置'在此文件夹中的以下内容
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<solution>
<add key="disableSourceControlIntegration" value="true" />
</solution>
</configuration>
然后创建文件'. nuget。目标如下 $ (MSBuildProjectDirectory) . . \
<!-- Enable the restore command to run before builds -->
<RestorePackages Condition=" '$(RestorePackages)' == '' ">false</RestorePackages>
<!-- Property that enables building a package from a project -->
<BuildPackage Condition=" '$(BuildPackage)' == '' ">false</BuildPackage>
<!-- Determines if package restore consent is required to restore packages -->
<RequireRestoreConsent Condition=" '$(RequireRestoreConsent)' != 'false' ">true</RequireRestoreConsent>
<!-- Download NuGet.exe if it does not already exist -->
<DownloadNuGetExe Condition=" '$(DownloadNuGetExe)' == '' ">false</DownloadNuGetExe>
</PropertyGroup>
<ItemGroup Condition=" '$(PackageSources)' == '' ">
<!-- Package sources used to restore packages. By default will used the registered sources under %APPDATA%\NuGet\NuGet.Config -->
<!--
<PackageSource Include="https://nuget.org/api/v2/" />
<PackageSource Include="https://my-nuget-source/nuget/" />
-->
</ItemGroup>
<PropertyGroup Condition=" '$(OS)' == 'Windows_NT'">
<!-- Windows specific commands -->
<NuGetToolsPath>$([System.IO.Path]::Combine($(SolutionDir), ".nuget"))</NuGetToolsPath>
<PackagesConfig>$([System.IO.Path]::Combine($(ProjectDir), "packages.config"))</PackagesConfig>
<PackagesDir>$([System.IO.Path]::Combine($(SolutionDir), "packages"))</PackagesDir>
</PropertyGroup>
<PropertyGroup Condition=" '$(OS)' != 'Windows_NT'">
<!-- We need to launch nuget.exe with the mono command if we're not on windows -->
<NuGetToolsPath>$(SolutionDir).nuget</NuGetToolsPath>
<PackagesConfig>packages.config</PackagesConfig>
<PackagesDir>$(SolutionDir)packages</PackagesDir>
</PropertyGroup>
<PropertyGroup>
<!-- NuGet command -->
<NuGetExePath Condition=" '$(NuGetExePath)' == '' ">$(NuGetToolsPath)\nuget.exe</NuGetExePath>
<PackageSources Condition=" $(PackageSources) == '' ">@(PackageSource)</PackageSources>
<NuGetCommand Condition=" '$(OS)' == 'Windows_NT'">"$(NuGetExePath)"</NuGetCommand>
<NuGetCommand Condition=" '$(OS)' != 'Windows_NT' ">mono --runtime=v4.0.30319 $(NuGetExePath)</NuGetCommand>
<PackageOutputDir Condition="$(PackageOutputDir) == ''">$(TargetDir.Trim('\\'))</PackageOutputDir>
<RequireConsentSwitch Condition=" $(RequireRestoreConsent) == 'true' ">-RequireConsent</RequireConsentSwitch>
<!-- Commands -->
<RestoreCommand>$(NuGetCommand) install "$(PackagesConfig)" -source "$(PackageSources)" $(RequireConsentSwitch) -o "$(PackagesDir)"</RestoreCommand>
<BuildCommand>$(NuGetCommand) pack "$(ProjectPath)" -p Configuration=$(Configuration) -o "$(PackageOutputDir)" -symbols</BuildCommand>
<!-- Make the build depend on restore packages -->
<BuildDependsOn Condition="$(RestorePackages) == 'true'">
RestorePackages;
$(BuildDependsOn);
</BuildDependsOn>
<!-- Make the build depend on restore packages -->
<BuildDependsOn Condition="$(BuildPackage) == 'true'">
$(BuildDependsOn);
BuildPackage;
</BuildDependsOn>
</PropertyGroup>
<Target Name="CheckPrerequisites">
<!-- Raise an error if we're unable to locate nuget.exe -->
<Error Condition="'$(DownloadNuGetExe)' != 'true' AND !Exists('$(NuGetExePath)')" Text="Unable to locate '$(NuGetExePath)'" />
<SetEnvironmentVariable EnvKey="VisualStudioVersion" EnvValue="$(VisualStudioVersion)" Condition=" '$(VisualStudioVersion)' != '' AND '$(OS)' == 'Windows_NT' " />
<DownloadNuGet OutputFilename="$(NuGetExePath)" Condition=" '$(DownloadNuGetExe)' == 'true' AND !Exists('$(NuGetExePath)')" />
</Target>
<Target Name="RestorePackages" DependsOnTargets="CheckPrerequisites">
<Exec Command="$(RestoreCommand)"
Condition="'$(OS)' != 'Windows_NT' And Exists('$(PackagesConfig)')" />
<Exec Command="$(RestoreCommand)"
LogStandardErrorAsError="true"
Condition="'$(OS)' == 'Windows_NT' And Exists('$(PackagesConfig)')" />
</Target>
<Target Name="BuildPackage" DependsOnTargets="CheckPrerequisites">
<Exec Command="$(BuildCommand)"
Condition=" '$(OS)' != 'Windows_NT' " />
<Exec Command="$(BuildCommand)"
LogStandardErrorAsError="true"
Condition=" '$(OS)' == 'Windows_NT' " />
</Target>
<UsingTask TaskName="DownloadNuGet" TaskFactory="CodeTaskFactory" AssemblyFile="$(MSBuildToolsPath)\Microsoft.Build.Tasks.v4.0.dll">
<ParameterGroup>
<OutputFilename ParameterType="System.String" Required="true" />
</ParameterGroup>
<Task>
<Reference Include="System.Core" />
<Using Namespace="System" />
<Using Namespace="System.IO" />
<Using Namespace="System.Net" />
<Using Namespace="Microsoft.Build.Framework" />
<Using Namespace="Microsoft.Build.Utilities" />
<Code Type="Fragment" Language="cs">
<![CDATA[
try {
OutputFilename = Path.GetFullPath(OutputFilename);
Log.LogMessage("Downloading latest version of NuGet.exe...");
WebClient webClient = new WebClient();
webClient.DownloadFile("https://nuget.org/nuget.exe", OutputFilename);
return true;
}
catch (Exception ex) {
Log.LogErrorFromException(ex);
return false;
}
]]>
</Code>
</Task>
</UsingTask>
<UsingTask TaskName="SetEnvironmentVariable" TaskFactory="CodeTaskFactory" AssemblyFile="$(MSBuildToolsPath)\Microsoft.Build.Tasks.v4.0.dll">
<ParameterGroup>
<EnvKey ParameterType="System.String" Required="true" />
<EnvValue ParameterType="System.String" Required="true" />
</ParameterGroup>
<Task>
<Using Namespace="System" />
<Code Type="Fragment" Language="cs">
<![CDATA[
try {
Environment.SetEnvironmentVariable(EnvKey, EnvValue, System.EnvironmentVariableTarget.Process);
}
catch {
}
]]>
</Code>
</Task>
</UsingTask>
以我为例，我把我的解决方案文件夹从一个位置移动到另一个位置，重新组织了一下，在这个过程中，它的相对文件夹结构发生了变化。
因此，我必须编辑我的.csproj文件中与下面类似的所有条目
<Import Project="..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets" Condition="Exists('..\packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets')" />
to
<Import Project="packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets" Condition="Exists('packages\Microsoft.Bcl.Build.1.0.14\tools\Microsoft.Bcl.Build.targets')" />
(注意从..\packages\到packages\。在你的情况下，它可能是一个不同的相对结构，但你懂的。)
如果您正在使用TFS
删除NuGet.exe和NuGet。目标解决方案的.nuget文件夹中的文件。确保文件本身也从解决方案工作区中删除。 保留NuGet。配置文件继续绕过向源代码控制添加包。
编辑解决方案中的每个项目文件(例如，.csproj， .vbproj)，并删除对NuGet的任何引用。目标文件。在您选择的编辑器中打开项目文件并删除以下设置:
<RestorePackages>true</RestorePackages>
...
<Import Project="$(SolutionDir)\.nuget\nuget.targets" />
...
<Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
<PropertyGroup>
<ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them. For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
</PropertyGroup>
<Error Condition="!Exists('$(SolutionDir)\.nuget\NuGet.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\.nuget\NuGet.targets'))" />
</Target>
如果您不使用TFS
从解决方案中删除.nuget文件夹。确保文件夹本身也从解决方案工作区中删除。
编辑解决方案中的每个项目文件(例如，.csproj， .vbproj)，并删除对NuGet的任何引用。目标文件。在您选择的编辑器中打开项目文件并删除以下设置:
<RestorePackages>true</RestorePackages>
...
<Import Project="$(SolutionDir)\.nuget\nuget.targets" />
...
<Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
<PropertyGroup>
<ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them. For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
</PropertyGroup>
<Error Condition="!Exists('$(SolutionDir)\.nuget\NuGet.targets')" Text="$([System.String]::Format('$(ErrorText)', '$(SolutionDir)\.nuget\NuGet.targets'))" />
</Target>
参考:迁移msbuild集成解决方案以使用自动包恢复
这个错误似乎是在代码的某个地方触发的。我们来看看。Csproj文件，可以在末尾找到它。
步骤1 从包中删除包。配置文件。
<package id="Microsoft.CodeDom.Providers.DotNetCompilerPlatform" version="2.0.1" targetFramework="net46" />
步骤2 编辑.csproj项目文件并删除以下设置
<Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
<PropertyGroup>
<ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them. For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
</PropertyGroup>
<Error Condition="!Exists('..\packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.2.0.1\build\net46\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.props')" Text="$([System.String]::Format('$(ErrorText)', '..\packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.2.0.1\build\net46\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.props'))" />
步骤3 进入包管理器控制台，执行Update-Package -重装命令
我有同样的错误，但在我的情况下，这是无关的nuget包在所有。 我的解决方案有一个项目，该项目参考了其他项目，这些项目不是我的解决方案的一部分，也没有构建。在用其他解决方案构建它们(或者我也可以将它们包含到我的解决方案中)，并在visual studio中重新打开我的解决方案后，问题就解决了。
