在Windows 10 x64计算机上运行的VS2015中，我在尝试构建.net core Web项目时遇到错误。
The Dnx Runtime package needs to be installed. See output window for more details
这是输出窗口日志（仅相关部分）
1>Done building target "BeforeCompile" in project "WebApplication1.xproj".
1> Target "_TimeStampBeforeCompile" skipped, due to false condition; ('$(RunPostBuildEvent)'=='OnOutputUpdated' or ('$(RegisterForComInterop)'=='true' and '$(OutputType)'=='library')) was evaluated as (''=='OnOutputUpdated' or (''=='true' and 'Library'=='library')).
1> 1>
1>Target "GetRuntimeToolingPathTarget" in file "C:\Program Files (x86)\MSBuild\Microsoft\VisualStudio\v14.0\DNX\Microsoft.DNX.targets" from project "C:\Users\v-prchep\Documents\Visual Studio 2015\Projects\WebApplication1\src\WebApplication1\WebApplication1.xproj" (target "CoreCompile" depends on it):
1> Using "GetRuntimeToolingPath" task from assembly "C:\Program Files (x86)\MSBuild\Microsoft\VisualStudio\v14.0\DNX\Microsoft.DNX.Tasks.dll".
1> Task "GetRuntimeToolingPath"
1> Done executing task "GetRuntimeToolingPath".
1> Using "Error" task from assembly "Microsoft.Build.Tasks.Core, Version=14.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a".
1> Task "Error"
1> 1>
1>C:\Program Files (x86)\MSBuild\Microsoft\VisualStudio\v14.0\DNX\Microsoft.DNX.targets(126,5): error : The Dnx Runtime package needs to be installed. See output window for more details.
1> Done executing task "Error" -- FAILED.
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1>Done building target "GetRuntimeToolingPathTarget" in project "WebApplication1.xproj" -- FAILED.
1> 1>
1>Target "_CheckForCompileOutputs" in file "C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets" from project "C:\Users\v-prchep\Documents\Visual Studio 2015\Projects\WebApplication1\src\WebApplication1\WebApplication1.xproj" (target "_CleanGetCurrentAndPriorFileWrites" depends on it):
1> 1>
1>Done building target "_CheckForCompileOutputs" in project "WebApplication1.xproj".
1> Target "_SGenCheckForOutputs" skipped, due to false condition; ('$(_SGenGenerateSerializationAssembliesConfig)' == 'On' or ('@(WebReferenceUrl)'!='' and '$(_SGenGenerateSerializationAssembliesConfig)' == 'Auto')) was evaluated as ('Off' == 'On' or (''!='' and 'Off' == 'Auto')).
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1>Target "_CleanGetCurrentAndPriorFileWrites" in file "C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets" from project "C:\Users\v-prchep\Documents\Visual Studio 2015\Projects\WebApplication1\src\WebApplication1\WebApplication1.xproj" (target "_CleanRecordFileWrites" depends on it):
1> Task "ReadLinesFromFile"
1> Done executing task "ReadLinesFromFile".
1> Using "ConvertToAbsolutePath" task from assembly "Microsoft.Build.Tasks.Core, Version=14.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a".
1> Task "ConvertToAbsolutePath"
1> Done executing task "ConvertToAbsolutePath".
1> Task "FindUnderPath"
1> Comparison path is "C:\Users\v-prchep\Documents\Visual Studio 2015\Projects\WebApplication1\src\WebApplication1".
1> Done executing task "FindUnderPath".
1> Task "FindUnderPath"
1> Comparison path is "..\..\artifacts\bin\WebApplication1\".
1> Done executing task "FindUnderPath".
1> Task "FindUnderPath"
1> Comparison path is "..\..\artifacts\obj\WebApplication1\Debug\".
1> Done executing task "FindUnderPath".
1> Task "RemoveDuplicates"
1> Done executing task "RemoveDuplicates".
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1>Done building target "_CleanGetCurrentAndPriorFileWrites" in project "WebApplication1.xproj".
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1>Target "_CleanRecordFileWrites" in file "C:\Program Files (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets" from project "C:\Users\v-prchep\Documents\Visual Studio 2015\Projects\WebApplication1\src\WebApplication1\WebApplication1.xproj" (target "CoreBuild" depends on it):
1> Task "RemoveDuplicates"
1> Done executing task "RemoveDuplicates".
1> Task "MakeDir"
1> Done executing task "MakeDir".
1> Task "WriteLinesToFile"
1> Done executing task "WriteLinesToFile".
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1>Done building target "_CleanRecordFileWrites" in project "WebApplication1.xproj".
1>
1>Build FAILED.
1>
1>Time Elapsed 00:00:00.02
========== Rebuild All: 0 succeeded, 1 failed, 0 skipped ==========
在日志后面，我检查了Microsoft.DNX.targets文件并找到了这一行
<Error Text="The Dnx Runtime package needs to be installed. See output window for more details." Condition="!Exists('$(RuntimeToolingExe)')" />
似乎它试图从dnx找到$(RuntimeToolingExe)路径，但我无法弄清楚它的设置位置。
注意： dnx运行时已经安装，我可以使用以下命令从命令提示符运行应用程序
dnx web
应用程序正常运行。我相信这是VS2015工具的一个问题，我无法弄明白。你能帮帮我吗？
PS：遵循this SO thread中提供的所有步骤似乎没有任何效果。
答案 0 :(得分：4)
卸载http://www.sauronsoftware.it/projects/jave/manual.php后问题最终解决了。似乎StyleCop覆盖了Visual Studio正在寻找的dnx路径。但是，这只是一个猜测，我不是特别确定为什么它有效！