【发布时间】：2019-01-25 23:49:52
【问题描述】：
我遇到了一个疯狂的系统负载问题，我不知道它是什么。错误和输出
Server Error in '/' Application. Cannot load a reference assembly for
execution. Description: An unhandled exception occurred during the
execution of the current web request. Please review the stack trace
for more information about the error and where it originated in the
code.
Exception Details: System.BadImageFormatException: Cannot load a
reference assembly for execution.
来源错误：
An unhandled exception was generated during the execution of the
current web request. Information regarding the origin and location of
the exception can be identified using the exception stack trace below.
堆栈跟踪：
[BadImageFormatException: Cannot load a reference assembly for
execution.]
[BadImageFormatException: Could not load file or assembly 'System.IO'
or one of its dependencies. Reference assemblies should not be loaded
for execution. They can only be loaded in the Reflection-only loader
context. (Exception from HRESULT: 0x80131058)]
System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String
codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint,
StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean
throwOnFileNotFound, Boolean forIntrospection, Boolean
suppressSecurityChecks) +0
System.Reflection.RuntimeAssembly.nLoad(AssemblyName fileName, String
codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint,
StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean
throwOnFileNotFound, Boolean forIntrospection, Boolean
suppressSecurityChecks) +36
System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName
assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly,
StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean
throwOnFileNotFound, Boolean forIntrospection, Boolean
suppressSecurityChecks) +152
System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString,
Evidence assemblySecurity, StackCrawlMark& stackMark, IntPtr
pPrivHostBinder, Boolean forIntrospection) +77
System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString,
Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean
forIntrospection) +21 System.Reflection.Assembly.Load(String
assemblyString) +28
System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String
assemblyName, Boolean starDirective) +38
[ConfigurationErrorsException: Could not load file or assembly
'System.IO' or one of its dependencies. Reference assemblies should
not be loaded for execution. They can only be loaded in the
Reflection-only loader context. (Exception from HRESULT: 0x80131058)]
System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String
assemblyName, Boolean starDirective) +726
System.Web.Configuration.CompilationSection.LoadAllAssembliesFromAppDomainBinDirectory()
+196 System.Web.Configuration.CompilationSection.LoadAssembly(AssemblyInfo
ai) +45
System.Web.Compilation.BuildManager.GetReferencedAssemblies(CompilationSection
compConfig) +172
System.Web.Compilation.BuildManager.GetPreStartInitMethodsFromReferencedAssemblies()
+91 System.Web.Compilation.BuildManager.CallPreStartInitMethods(String
preStartInitListPath, Boolean& isRefAssemblyLoaded) +111
System.Web.Compilation.BuildManager.ExecutePreAppStart() +156
System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager
appManager, IApplicationHost appHost, IConfigMapPathFactory
configMapPathFactory, HostingEnvironmentParameters hostingParameters,
PolicyLevel policyLevel, Exception appDomainCreationException) +695
[HttpException (0x80004005): Could not load file or assembly
'System.IO' or one of its dependencies. Reference assemblies should
not be loaded for execution. They can only be loaded in the
Reflection-only loader context. (Exception from HRESULT: 0x80131058)]
System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +659
System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +89
System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest
wr, HttpContext context) +188
Version Information: Microsoft .NET Framework Version:4.0.30319;
ASP.NET Version:4.7.3160.0
当我查看 fuslogvw 时，我得到以下最后一个错误：
*** Assembly Binder Log Entry (8/19/18 @ 12:10:13 PM) ***
The operation failed. Bind result: hr = 0x80070002. The system cannot
find the file specified.
Assembly manager loaded from:
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\clr.dll Running under
executable C:\Program Files (x86)\Microsoft Visual
Studio\2017\Professional\MSBuild\15.0\Bin\Roslyn\VBCSCompiler.exe
--- A detailed error log follows.
=== Pre-bind state information === LOG: DisplayName = System.Runtime.Loader, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=b03f5f7f11d50a3a (Fully-specified) LOG: Appbase =
file:///C:/Program Files (x86)/Microsoft Visual
Studio/2017/Professional/MSBuild/15.0/Bin/Roslyn/ LOG: Initial
PrivatePath = NULL LOG: Dynamic Base = NULL LOG: Cache Base = NULL
LOG: AppName = VBCSCompiler.exe Calling assembly :
Microsoft.CodeAnalysis, Version=2.9.0.0, Culture=neutral,
PublicKeyToken=31bf3856ad364e35.
=== LOG: This bind starts in default load context. LOG: Using application configuration file: C:\Program Files (x86)\Microsoft
Visual
Studio\2017\Professional\MSBuild\15.0\Bin\Roslyn\VBCSCompiler.exe.Config
LOG: Using host configuration file: LOG: Using machine configuration
file from
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\config\machine.config.
LOG: Post-policy reference: System.Runtime.Loader, Version=4.0.0.0,
Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a LOG: GAC Lookup was
unsuccessful. LOG: Attempting download of new URL file:///C:/Program
Files (x86)/Microsoft Visual
Studio/2017/Professional/MSBuild/15.0/Bin/Roslyn/System.Runtime.Loader.DLL.
LOG: Attempting download of new URL file:///C:/Program Files
(x86)/Microsoft Visual
Studio/2017/Professional/MSBuild/15.0/Bin/Roslyn/System.Runtime.Loader/System.Runtime.Loader.DLL.
LOG: Attempting download of new URL file:///C:/Program Files
(x86)/Microsoft Visual
Studio/2017/Professional/MSBuild/15.0/Bin/Roslyn/System.Runtime.Loader.EXE.
LOG: Attempting download of new URL file:///C:/Program Files
(x86)/Microsoft Visual
Studio/2017/Professional/MSBuild/15.0/Bin/Roslyn/System.Runtime.Loader/System.Runtime.Loader.EXE.
LOG: All probing URLs attempted and failed.
【问题讨论】：
-
BadImageFormatException通常与混合 dll 指令集有关（x64 与 x86），如果您正在为该架构构建，请确保所有引用 dll 都是 x86。 -
根据错误代码0x80070002，此问题可能与架构不匹配有关。如果可能，请查看stackoverflow.com/questions/11030500/… 和stackoverflow.com/questions/43610551/…
-
我已经查看了这些。不幸的是，这与 Roslyn 和微软的东西有关。这不是我添加的，所以我认为这些资源不是很有帮助。
-
@John 感谢您提及 Rosyln！我刚刚安装了一个 nuget 包，它正在做一些聪明的编译魔法，所以它一定是在干扰。我想也许它与 4.7.x 不兼容
标签： c# .net msbuild visual-studio-2017