使用NHUnspell NuGet包时无法加载文件或程序集Hunspellx64.dll？

Question

我有一个使用NHUnspell NuGet包的ASP.NET/MVC Web角色。当我尝试运行它，我得到了以下错误消息：

Could not load file or assembly 'Hunspellx64.dll' or one of its dependencies. The module was expected to contain an assembly manifest. 

这很奇怪，因为我就我所知，我的Web角色项目不应该试图去加载非托管Hunspellx64.dll。这应该由受管理的NHUnspell DLL来处理。该DLL作为构建步骤复制到Web角色的/ bin目录中。

更新：感谢Thomas对WebActivator过时的评论，我能够解决这个问题。我重复我的答复评论他接受的答案，以确保其他人谁都有这个问题看的修补程序：

我有NHUnspell这个错误开始 发生之前成功合作。破坏的东西是用 NuGet安装AttributeRouting。 AttributeRouting拖动旧版本的WebActivator （1.0.0.0）。不幸的是，当您执行更新操作时，NuGet不会建议更新它 。您可以通过程序包管理器控制台手工更新 按照这个网页的说明：

http://www.nuget.org/packages/WebActivator

以下是原帖的其余部分接收到之前修复：

我已经淘汰了我的项目直接引用/链接到Hunspellx64.dll，包括我的NuGet包配置，packages.config，web.config，我的参考列表，原始项目文件等，我找不到任何直接参考DLL。还有什么地方可以尝试阻止我的项目直接加载非托管DLL？以下是ASP.NET错误转储：

[BadImageFormatException: Could not load file or assembly 'Hunspellx64.dll' or one of its dependencies. The module was expected to contain an assembly manifest.] 
    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) +34 
    System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +152 
    System.Reflection.RuntimeAssembly.InternalLoadFrom(String assemblyFile, Evidence securityEvidence, Byte[] hashValue, AssemblyHashAlgorithm hashAlgorithm, Boolean forIntrospection, Boolean suppressSecurityChecks, StackCrawlMark& stackMark) +102 
    System.Reflection.Assembly.LoadFrom(String assemblyFile) +34 
    WebActivator.PreApplicationStartCode.Start() in D:\Code\Bitbucket\WebActivator\WebActivator\PreApplicationStartCode.cs:11 

[InvalidOperationException: The pre-application start initialization method Start on type WebActivator.PreApplicationStartCode threw an exception with the following error message: Could not load file or assembly 'Hunspellx64.dll' or one of its dependencies. The module was expected to contain an assembly manifest..] 
    System.Web.Compilation.BuildManager.InvokePreStartInitMethodsCore(ICollection`1 methods, Func`1 setHostingEnvironmentCultures) +550 
    System.Web.Compilation.BuildManager.InvokePreStartInitMethods(ICollection`1 methods) +132 
    System.Web.Compilation.BuildManager.CallPreStartInitMethods(String preStartInitListPath) +90 
    System.Web.Compilation.BuildManager.ExecutePreAppStart() +135 
    System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters, PolicyLevel policyLevel, Exception appDomainCreationException) +516 

[HttpException (0x80004005): The pre-application start initialization method Start on type WebActivator.PreApplicationStartCode threw an exception with the following error message: Could not load file or assembly 'Hunspellx64.dll' or one of its dependencies. The module was expected to contain an assembly manifest..] 
    System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +9874568 
    System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +101 
    System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +254 

Answer 1

WebActivator启动方法不处理bin文件夹中的非托管dll。 正如你在代码文件中看到： https://bitbucket.org/dfowler/webactivator/src/4c558d93cf3a/WebActivator/PreApplicationStartCode.cs

public static void Start() { 
      lock (initLock) { 
       if (!hasInited) { 
        // Go through all the bin assemblies 
        foreach (var assemblyFile in GetAssemblyFiles()) { 
         var assembly = Assembly.LoadFrom(assemblyFile); 

         // Go through all the PreApplicationStartMethodAttribute attributes 
         // Note that this is *our* attribute, not the System.Web namesake 
         foreach (PreApplicationStartMethodAttribute preStartAttrib in assembly.GetCustomAttributes(
          typeof(PreApplicationStartMethodAttribute), 
          inherit: false)) { 

          // If it asks to be called after global.asax App_Start, keep track of the method. Otherwise call it now 
          if (preStartAttrib.CallAfterGlobalAppStart && HostingEnvironment.IsHosted) { 
           attribsToCallAfterStart.Add(preStartAttrib); 
          } 
          else { 
           // Invoke the method that the attribute points to 
           preStartAttrib.InvokeMethod(); 
          } 
         } 
        } 

在start（）方法加载的所有DLL组件作为探测其PreApplicationStartMethodAttribute。这对于非托管DLL来说是失败的，因为没有程序集清单。

看起来您正在使用分支（dfolwler？）或WebActivator的过期版本，因为当前版本可以通过忽略程序集加载上的所有异常来处理此问题。

private static IEnumerable<Assembly> Assemblies 
{ 
    get 
    { 
     if (_assemblies == null) 
     { 
      // Cache the list of relevant assemblies, since we need it for both Pre and Post 
      _assemblies = new List<Assembly>(); 
      foreach (var assemblyFile in GetAssemblyFiles()) 
      { 
       try 
       { 
        // Ignore assemblies we can't load. They could be native, etc... 
        _assemblies.Add(Assembly.LoadFrom(assemblyFile)); 
       } 
       catch 
       { 
       } 
      } 
     } 

     return _assemblies; 
    } 
} 

将WebActivator更新到最新版本。