我使用 Hudson 作为持续集成服务器。这些工作最终启动了 MSBuild。每个人都偶尔会遇到我的构建因 MSBuild 中的非代码编译错误而失败的情况:
C:\WINDOWS\Microsoft.NET\Framework\v3.5\Microsoft.Common.targets(2703,9): error MSB3021: Unable to copy file "..\Lib\Microsoft\Microsoft.Practices.Unity.Configuration.dll" to "bin\Debug\Microsoft.Practices.Unity.Configuration.dll". Access to the path 'bin\Debug\Microsoft.Practices.Unity.Configuration.dll' is denied.
当我检查“bin\Debug\Microsoft.Practices.Unity.Configuration.dll”时，我发现它是一个 0 字节文件。
我不知道为什么这个文件有问题。有什么想法吗？
最佳答案
MS Build Copy 任务具有未记录的功能，至少 Google 保持沉默。 如果设置系统范围环境变量 MSBUILDALWAYSRETRY=1 即使在复制操作期间出现“拒绝访问”异常，此任务也会重试复制文件
输出示例
C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Common.targets (3513): Got System.UnauthorizedAccessException: Access to the path 'C:\Builds\8\28\Binaries\Release\fr\System.Spatial.resources.dll' is denied.
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.File.InternalCopy(String sourceFileName, String destFileName, Boolean overwrite, Boolean checkHost)
at System.IO.File.Copy(String sourceFileName, String destFileName, Boolean overwrite)
at Microsoft.Build.Tasks.Copy.CopyFileWithLogging(FileState sourceFileState, FileState destinationFileState)
at Microsoft.Build.Tasks.Copy.DoCopyWithRetries(FileState sourceFileState, FileState destinationFileState, CopyFileWithState copyFile) copying C:\Builds\8\28\Sources\Main\Solutions\packages\System.Spatial.5.2.0\lib
et40\fr\System.Spatial.resources.dll to C:\Builds\8\28\Binaries\Release\fr\System.Spatial.resources.dll and HR is -2147024891
C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Common.targets (3513): Retrying on ERROR_ACCESS_DENIED because MSBUILDALWAYSRETRY = 1
C:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Common.targets (3513): Could not copy "C:\Builds\8\28\Sources\Main\Solutions\packages\System.Spatial.5.2.0\lib
et40\fr\System.Spatial.resources.dll" to "C:\Builds\8\28\Binaries\Release\fr\System.Spatial.resources.dll". Beginning retry 1 in 1000ms. Access to the path 'C:\Builds\8\28\Binaries\Release\fr\System.Spatial.resources.dll' is denied.
关于CI 环境中的 MSBuild "Unable to copy file"，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/1133446/