.net - 无法加载文件或程序集 'Newtonsoft.Json, Version=7.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed' 或其依赖项之一

Question

这一个错误让我发疯。

我安装了发送网格 我的一个名为 的类库中的 NuGet 包基本服务 ，它依赖于 Newtonsoft.Json v7.0.1 ，所以它将它安装在我的包文件夹中并引用它。

在类库中，我有这个绑定(bind)重定向:

<dependentAssembly>
    <assemblyIdentity name="Newtonsoft.Json" publicKeyToken="30ad4fe6b2a6aeed" culture="neutral" />
    <bindingRedirect oldVersion="0.0.0.0-7.0.0.0" newVersion="7.0.0.0" />
</dependentAssembly>

在 ASP.NET MVC 应用程序的 web.config 中，即使用我的类库的客户端应用程序中，我有一个针对低于 v6 的版本的程序集绑定(bind)重定向，以指向 的 v6。 Newtonsoft.Json 像这样的图书馆:

<dependentAssembly>
 <assemblyIdentity name="Newtonsoft.Json" culture="neutral"
              publicKeyToken="30ad4fe6b2a6aeed" />
  <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" />
</dependentAssembly>

当我运行 中的电子邮件发送代码时基本服务 库，我收到此错误:

The thread 0x1a4c has exited with code 0 (0x0). System.IO.FileLoadException: Could not load file or assembly 'Newtonsoft.Json, Version=7.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) File name: 'Newtonsoft.Json, Version=7.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed' at SendGrid.Helpers.Mail.Mail.Get() at BaseServices.EmailService.SendAsync(EmailMessage message) in MyFolder\BaseServices\EmailService.cs:line 39

=== Pre-bind state information === LOG: DisplayName = Newtonsoft.Json, Version=7.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed (Fully-specified) LOG: Appbase = file:///MyFolder/Web/ LOG: Initial PrivatePath = MyFolder\Web\bin Calling assembly : SendGrid, Version=7.0.3.0, Culture=neutral, PublicKeyToken=4f047e93159395ca. === LOG: This bind starts in default load context. LOG: Using application configuration file: MyFolder\Web\web.config LOG: Using host configuration file: C:\Users\computer\Documents\IISExpress\config\aspnet.config LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config. LOG: Post-policy reference: Newtonsoft.Json, Version=7.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed LOG: Attempting download of new URL file:///C:/Users/computer/AppData/Local/Temp/Temporary ASP.NET Files/root/ef9cacdf/e639667a/Newtonsoft.Json.DLL. LOG: Attempting download of new URL file:///C:/Users/computer/AppData/Local/Temp/Temporary ASP.NET Files/root/ef9cacdf/e639667a/Newtonsoft.Json/Newtonsoft.Json.DLL. LOG: Attempting download of new URL file:///MyFolder/Web/bin/Newtonsoft.Json.DLL. WRN: Comparing the assembly name resulted in the mismatch: Major Version ERR: Failed to complete setup of assembly (hr = 0x80131040). Probing terminated.

Answer 1

您的解决方案中有 2 个不同版本的 JSON.NET 库。要解决这个问题，您应该将它们升级到最新版本。跟着这些步骤:

打开解决方案资源管理器

右键单击解决方案名称

为解决方案选择管理 Nuget 包

从菜单中选择更新

更新 JSON.NET 包

这将解决您的问题。