无法从Unity2.0迁移到Unity2.1.505.0

Question

我有一个使用Unity2.0编写的应用程序，我正在尝试迁移到2.1.505.0版本。我将项目中的引用更改为指向与较新版本对应的DLL。当我建立解决方案的时候，一切都很顺利。但是，当我尝试运行应用程序时，它给了我一个FileNotfoundException：

Stack Trace: 

[FileLoadException: Could not load file or assembly 'Microsoft.Practices.Unity, Version=2.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)]
   InsightsService.WebApi.WebApiApplication.Application_Start() in E:\tfs\DisplayApps\Services\InsightsBps\Dev\source\InsightsService.WebApi\Global.asax.cs:30

[HttpException (0x80004005): Could not load file or assembly 'Microsoft.Practices.Unity, Version=2.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)]
   System.Web.HttpApplicationFactory.EnsureAppStartCalledForIntegratedMode(HttpContext context, HttpApplication app) +12863325
   System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) +175
   System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) +304
   System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +404
   System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +475

[HttpException (0x80004005): Could not load file or assembly 'Microsoft.Practices.Unity, Version=2.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)]
   System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +12880068
   System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +159
   System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +12721257

我检查了web.config，找不到任何重写。我甚至清理了解决方案并重建了它，但问题依然存在。这里有什么问题吗？

Answer 1

您可以使用AssemblyBinding来确保在请求旧版本时使用统一的新版本。在下面的配置文件中，它应该可以工作。

<runtime>
  <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
    <dependentAssembly>
      <assemblyIdentity name="Microsoft.Practices.Unity"
                        publicKeyToken="31bf3856ad364e35"
                       />
      <!-- Assembly versions can be redirected in application, publisher policy, or machine configuration files. -->
      <bindingRedirect oldVersion="2.0.414.0"
                       newVersion="2.1.505.0"/>
    </dependentAssembly>
    <dependentAssembly>
      <assemblyIdentity name="Microsoft.Practices.Unity.Interception"
                        publicKeyToken="31bf3856ad364e35"
                       />
      <!-- Assembly versions can be redirected in application, publisher policy, or machine configuration files. -->
      <bindingRedirect oldVersion="2.0.414.0"
                       newVersion="2.1.505.0"/>
    </dependentAssembly>
  </assemblyBinding>
</runtime>

当我更新到新的统一版本时，我也遇到了同样的问题，但是我使用的企业库请求旧版本，因为企业库是针对2.0.414.0版本构建的。

Answer 2

项目中的某些内容仍在引用旧的DLL。

您是否试过打开fuslogvw (有关说明请参阅http://msdn.microsoft.com/en-us/library/e74a18c4.aspx )并查看它所做的日志记录？通常情况下，引用问题很快就会出现。

如果发现引用是无法修复的(例如，另一个您不拥有的DLL )，则可以查看如何设置绑定重定向。