c# - IIS 7 错误 : Cannot execute a program. 正在执行的命令是 csc.exe(ApplicationPoolIdentity 默认设置)

Question

这是我在 SO 中的第一个问题，如果我有语法错误，请向我道歉。

问题描述:

我在 IIS 7 (Windows Server 2008) 和 SQL Server 2008 R2 上安装了基于 32 位 MVC 5 的 CRUD 系统，并安装在多台服务器上，自 2015 年 8 月起提供公司内网管理服务。几个月来，所有这些都顺利运行，没有任何问题。然而，昨天我发现我无法访问 172.16.1.101 服务器上的站点根页面，并显示以下消息:

> Server Error in '/' Application.

> [Win32Exception (0x80004005): Access is denied]

>[ExternalException (0x80004005): Cannot execute a program. The command being executed was "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\-(random 8-digit hex)-\-(random 8-digit hex)-\-(random 8-char base64).cmdline".]
System.CodeDom.Compiler.Executor.ExecWaitWithCaptureUnimpersonated(SafeUserTokenHandle userToken, String cmd, String currentDir, TempFileCollection tempFiles, String& outputName, String& errorName, String trueCmdLine) +3365
System.CodeDom.Compiler.Executor.ExecWaitWithCapture(SafeUserTokenHandle userToken, String cmd, String currentDir, TempFileCollection tempFiles, String& outputName, String& errorName, String trueCmdLine) +8591876
Microsoft.CSharp.CSharpCodeGenerator.Compile(CompilerParameters options, String compilerDirectory, String compilerExe, String arguments, String& outputFile, Int32& nativeReturnValue, String trueArgs) +331
Microsoft.CSharp.CSharpCodeGenerator.FromFileBatch(CompilerParameters options, String[] fileNames) +784
Microsoft.CSharp.CSharpCodeGenerator.System.CodeDom.Compiler.ICodeCompiler.CompileAssemblyFromFileBatch(CompilerParameters options, String[] fileNames) +170
System.Web.Compilation.AssemblyBuilder.Compile() +12440424
System.Web.Compilation.BuildProvidersCompiler.PerformBuild() +303
System.Web.Compilation.ApplicationBuildProvider.GetGlobalAsaxBuildResult(Boolean isPrecompiledApp) +12978145
System.Web.Compilation.BuildManager.CompileGlobalAsax() +50
System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled() +665

>[HttpException (0x80004005): Cannot execute a program. The command being executed was "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\-(random 8-digit hex)-\-(random 8-digit hex)-\-(random 8-char base64)-.cmdline".]
System.Web.Compilation.BuildManager.ReportTopLevelCompilationException() +80
System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled() +1142
System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters, PolicyLevel policyLevel, Exception appDomainCreationException) +1193

>[HttpException (0x80004005): Cannot execute a program. The command being executed was "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\-(random 8-digit hex)-\-(random 8-digit hex)-\-(random 8-char base64)-.cmdline".]
System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +12980692
System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +159
System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +12820285

这是发生异常时的事件日志:

>IIS 7 Event Log

>Event code: 3005 

>Event message: An unhandled exception has occurred. 

>Event time: 5/24/2016 1:42:08 PM 

>Event time (UTC): 5/24/2016 6:42:08 AM 

>Event ID: 062751a2dc724be9af5de99014e58a47 

>Event sequence: 2 

>Event occurrence: 1 

>Event detail code: 0 

>Application information: 

>Application domain: /LM/W3SVC/3/ROOT-1-131085457263004464 

>Trust level: Full 

>Application Virtual Path: / 

>Application Path: E:\Test\ 

>Machine name: -- edited --

>Process information: 

>Process ID: 1172

>Process name: w3wp.exe 

>Account name: IIS APPPOOL\ASP.NET v4.0 

>Exception information:

>Exception type: HttpException

>Exception message: Cannot execute a program. The command being executed was "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\-(random 8-digit hex)-\-(random 8-digit hex)-\-(random 8-char base64)-.cmdline".
   at System.Web.Compilation.BuildManager.ReportTopLevelCompilationException()
   at System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled()
   at System.Web.Compilation.BuildManager.CallAppInitializeMethod()
   at System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters, PolicyLevel policyLevel, Exception appDomainCreationException)

>Cannot execute a program. The command being executed was "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\-(random 8-digit hex)-\-(random 8-digit hex)-\-(random 8-char base64).cmdline".
   at System.CodeDom.Compiler.Executor.ExecWaitWithCaptureUnimpersonated(SafeUserTokenHandle userToken, String cmd, String currentDir, TempFileCollection tempFiles, String& outputName, String& errorName, String trueCmdLine)
   at System.CodeDom.Compiler.Executor.ExecWaitWithCapture(SafeUserTokenHandle userToken, String cmd, String currentDir, TempFileCollection tempFiles, String& outputName, String& errorName, String trueCmdLine)
   at Microsoft.CSharp.CSharpCodeGenerator.Compile(CompilerParameters options, String compilerDirectory, String compilerExe, String arguments, String& outputFile, Int32& nativeReturnValue, String trueArgs)
   at Microsoft.CSharp.CSharpCodeGenerator.FromFileBatch(CompilerParameters options, String[] fileNames)
   at Microsoft.CSharp.CSharpCodeGenerator.System.CodeDom.Compiler.ICodeCompiler.CompileAssemblyFromFileBatch(CompilerParameters options, String[] fileNames)
   at System.CodeDom.Compiler.CodeDomProvider.CompileAssemblyFromFile(CompilerParameters options, String[] fileNames)
   at System.Web.Compilation.AssemblyBuilder.Compile()
   at System.Web.Compilation.BuildProvidersCompiler.<PerformBuild>b__1(AssemblyBuilder assemblyBuilder)
   at System.Threading.Tasks.Parallel.<>c__DisplayClass32`2.<PartitionerForEachWorker>b__30()
   at System.Threading.Tasks.Task.InnerInvoke()
   at System.Threading.Tasks.Task.InnerInvokeWithArg(Task childTask)
   at System.Threading.Tasks.Task.<>c__DisplayClass11.<ExecuteSelfReplicating>b__10(Object param0)
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Web.Compilation.BuildProvidersCompiler.PerformBuild()
   at System.Web.Compilation.CodeDirectoryCompiler.GetCodeDirectoryAssembly(VirtualPath virtualDir, CodeDirectoryType dirType, String assemblyName, StringSet excludedSubdirectories, Boolean isDirectoryAllowed)
   at System.Web.Compilation.BuildManager.CompileCodeDirectory(VirtualPath virtualDir, CodeDirectoryType dirType, String assemblyName, StringSet excludedSubdirectories)
   at System.Web.Compilation.BuildManager.CompileResourcesDirectory()
   at System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled()

>Access is denied

>Request information:

>Request URL: //172.16.1.101/

>Request path: /

>User host address: //172.16.1.101

>User:

>Is authenticated: False

>Authentication Type:

>Thread account name: IIS APPPOOL\ASP.NET v4.0

>Thread information:

>Thread ID: 5

>Thread account name: IIS APPPOOL\ASP.NET v4.0

>Is impersonating: True

>Stack trace:    at >System.Web.Compilation.BuildManager.ReportTopLevelCompilationException()
   at System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled()
   at System.Web.Compilation.BuildManager.CallAppInitializeMethod()
   at System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters, PolicyLevel policyLevel, Exception appDomainCreationException)


>Custom event details: 

有时消息会显示\Temporary ASP.NET Files\tls 目录，而不是\Temporary ASP.NET Files\root 目录。

IIS 7 服务器配置为默认状态和单个池，默认情况下没有任何运行的 Web 服务(仅基本配置)，包括 XML(反)序列化器。

最初以为我的IIS系统账户权限错误，我已经设置权限为“完全控制”但没有成功。

因此，根据消息预期服务器端缺少文件编译，尝试通过此命令在CMD上手动编译cmdline文件

csc.exe /noconfig /fullpaths @"C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root-(random 8-digit hex)--(random 8-digit hex)--(random 8-char base64).cmdline"

提供错误:

fatal error CS2021: File name '@C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root-(random 8-digit hex)--(random 8-digit hex)--(random 8-char base64).cmdline' is too long or invalid

error CS2011: Error opening response file 'c:\Windows\Microsoft.NET\Framework\v4.0.30319\root-(random 8-digit hex)--(random 8-digit hex)--(random 8-char base64).cmdline' -- 'The system cannot find the file specified. '

不会放弃，我对这个问题进行了谷歌搜索，并在 SO 上找到了相关的类似问题:

Problems publishing a website on smarterasp.net with csc.exe file included?

https://stackoverflow.com/questions/37146958/an-unhandled-exception-was-generated-during-the-execution-of-the-current-web-re

但是，在为实时服务器实现编译项目时，我既没有安装“Microsoft.CodeDom.Providers.DotNetCompilerPlatform”包也没有使用 SOAP，并且已经在 web.config 上设置了“identity impersonate="true"”属性但无济于事.

接下来，我使用“高级设置”选项配置了与站点对应的 IIS 应用程序池，将身份部分从“ApplicationPoolIdentity”更改为“LocalSystem”，有趣的是，访问根页面时的 YSOD 消失了。我试图在“ApplicationPoolIdentity”上将其改回原来的状态，但 YSOD 返回了。

即使问题已经通过 LocalSystem 身份暂时解决了，我仍然好奇为什么在没有任何系统故障迹象的情况下发生错误。我想在这里问 2 个问题:

1. 谁能解释为什么 ApplicationPoolIdentity 选项在这种情况下不起作用？

2. 我可以采取哪些步骤来缓解其他服务器的此问题，即使它们的默认设置和 ApplicationPoolIdentity 已设置？

tl;dr:在 IIS 7 服务器上使用默认配置的 ApplicationPoolIdentity 一直工作到昨天我在既没有应用 XML 序列化器也没有应用 Web 服务的服务器上遇到了上述 YSOD，请帮助我解释或描述服务器上已经发生的详细问题以及缓解方法。

PS:所写目录路径中的“-”和“--”符号应替换为“\”。

Answer 1

从 nuget 包中卸载 DotNetCompilerPlatform