Question

我似乎无法在VS2010 ConsoleApplication中加载System.Net.Http.Formatting.dll，即使我有重定向设置。这是错误

System.IO.FileNotFoundException: Could not load file or assembly 'System.Net.Http.Formatting, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.
File name: 'System.Net.Http.Formatting, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'
   at uk.ac.salford.accman.backend.service.Models.WebService.AlmaRestClient.CreateOrUpdateUser(Operator user, Account account, JanusUser janusUser)
   at Salford.AccMan.BackEnd.Processes.Janus.UpdateALMAUser.ProcessTransaction(Transaction& transaction) in C:\VS2010\Accman.NET\AccManBackEndLibrary\Processes\Janus\UpdateALMAUser.cs:line 121
   at Salford.AccMan.BackEnd.Processes.TransactionServiceProcess.Process() in C:\VS2010\Accman.NET\AccManBackEndLibrary\TransactionServiceProcess.cs:line 147

=== Pre-bind state information ===
LOG: DisplayName = System.Net.Http.Formatting, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
 (Fully-specified)
LOG: Appbase = file:///C:/VS2010/.NET Code Library/ConsoleSchedulerService/ConsoleSchedulerService/bin/Debug/
LOG: Initial PrivatePath = NULL
Calling assembly : AccManLibrary, Version=3.0.4.0, Culture=neutral, PublicKeyToken=null.
===
LOG: This bind starts in LoadFrom load context.
WRN: Native image will not be probed in LoadFrom context. Native image will only be probed in default load context, like with Assembly.Load().
LOG: Using application configuration file: C:\VS2010\.NET Code Library\ConsoleSchedulerService\ConsoleSchedulerService\bin\Debug\ConsoleSchedulerService.exe.Config
LOG: Using host configuration file: 
LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config.
LOG: Redirect found in application configuration file: 4.0.0.0 redirected to 4.0.21112.0.
LOG: Post-policy reference: System.Net.Http.Formatting, Version=4.0.21112.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
LOG: Attempting download of new URL file:///C:/VS2010/.NET Code Library/ConsoleSchedulerService/ConsoleSchedulerService/bin/Debug/System.Net.Http.Formatting.DLL.
LOG: Attempting download of new URL file:///C:/VS2010/.NET Code Library/ConsoleSchedulerService/ConsoleSchedulerService/bin/Debug/System.Net.Http.Formatting/System.Net.Http.Formatting.DLL.
LOG: Attempting download of new URL file:///C:/VS2010/.NET Code Library/ConsoleSchedulerService/ConsoleSchedulerService/bin/Debug/redirect/System.Net.Http.Formatting.DLL.
LOG: Attempting download of new URL file:///C:/VS2010/.NET Code Library/ConsoleSchedulerService/ConsoleSchedulerService/bin/Debug/redirect/System.Net.Http.Formatting/System.Net.Http.Formatting.DLL.
LOG: Attempting download of new URL file:///C:/VS2010/.NET Code Library/ConsoleSchedulerService/ConsoleSchedulerService/bin/Debug/System.Net.Http.Formatting.EXE.
LOG: Attempting download of new URL file:///C:/VS2010/.NET Code Library/ConsoleSchedulerService/ConsoleSchedulerService/bin/Debug/System.Net.Http.Formatting/System.Net.Http.Formatting.EXE.
LOG: Attempting download of new URL file:///C:/VS2010/.NET Code Library/ConsoleSchedulerService/ConsoleSchedulerService/bin/Debug/redirect/System.Net.Http.Formatting.EXE.
LOG: Attempting download of new URL file:///C:/VS2010/.NET Code Library/ConsoleSchedulerService/ConsoleSchedulerService/bin/Debug/redirect/System.Net.Http.Formatting/System.Net.Http.Formatting.EXE.
LOG: Attempting download of new URL file:///C:/VS2010/Accman.NET/AccManBackEndLibrary/bin/System.Net.Http.Formatting.DLL.
WRN: Comparing the assembly name resulted in the mismatch: Build Number
LOG: Attempting download of new URL file:///C:/VS2010/Accman.NET/AccManBackEndLibrary/bin/System.Net.Http.Formatting/System.Net.Http.Formatting.DLL.
LOG: Attempting download of new URL file:///C:/VS2010/Accman.NET/AccManBackEndLibrary/bin/System.Net.Http.Formatting.EXE.
LOG: Attempting download of new URL file:///C:/VS2010/Accman.NET/AccManBackEndLibrary/bin/System.Net.Http.Formatting/System.Net.Http.Formatting.EXE.

所以，据我所知，它正在寻找System.Net.Http.Formatting，版本= 4.0.0.0，但我的项目包含版本4.0.21112.0，所以我设置了一个重定向（也在堆栈中提到）追踪，所以我知道重定向至少被拿起了）

我的重定向是：

      <dependentAssembly>
    <assemblyIdentity name="System.Net.Http.Formatting" publicKeyToken="31bf3856ad364e35" culture="neutral" />
    <bindingRedirect oldVersion="0.0.0.0-4.0.0.0" newVersion="4.0.21112.0" />
  </dependentAssembly>

它在C：/VS2010/Accman.NET/AccManBackEndLibrary/bin中找到了较新的DLL，但是抱怨构建号不正确。但是，据我所知，整个版本号是正确的。

如果我运行Powershell命令来获取确切的版本号，则返回相同的数字：

PS F:\> (get-item C:\VS2010\Accman.NET\AccManBackEndLibrary\bin\System.Net.Http.Formatting.dll).VersionInfo

ProductVersion   FileVersion      FileName
--------------   -----------      --------
4.0.21112.0      4.0.21112.0      C:\VS2010\Accman.NET\AccManBackEndLibrary\bin\System.Net.Http.Formatting.dll

请帮忙！我做错了什么？

由于

Answer 1

您可以从项目中删除dll参考，然后手动重新添加您拥有的dll （Solution Explorer - ＆gt; References - ＆gt; Add - ＆gt; Browse）
应该解决问题。

Answer 2

回答1

是的，首先回答是否要使用与.NET 4捆绑在一起的System.Net.Http.Formatting，System.Net.Http和System.Net.WebRequest版本，这就是我的（遗留）项目使用。

删除对这些包的每一个引用（包括packages.config和Nuget包管理器）。此外，如果您的问题是因为您像我一样从Nuget安装了NewtonSoft.Json，那么也要删除它。
手动将它们添加为@ user5226582建议（右键单击项目中的引用 - ＆gt;添加引用 - ＆gt; 程序集 - ＆gt;扩展。请注意我从捆绑的扩展中选择它们组件。
此外，如果您正在使用它，请对NewtonSoft.Json.dll执行相同的操作。那也是在Assemblies中 - ＆gt;扩展
从app.config

现在它是一个公平竞争的领域，因为所有的DLL都来自同一个地方，并且应该彼此兼容。

回答2

System.Net.Http已被Microsoft.Net.Http取代。删除任何现有的引用和相关的bindingRedirects（如答案1中所示）。

使用Nuget安装Microsoft.Net.Http
使用Nuget安装NewtonSoft.Json（如果使用）

这似乎对我有用

Answer 3

包文件版本和汇编版本不一定一致：

https://stackoverflow.com/a/51736117/3383751

DLL重定向 - 内部版本号不匹配

3 个答案: