无法修复错误“无法加载System.Net.Http，版本= 4.2.0.0”

时间：2019-08-24 12:08:27

标签： vb.net .net-assembly system.net packages.config

在生产服务器上，出现错误：

  

无法加载文件或程序集'System.Net.Http，版本= 4.2.0.0，区域性=中性，PublicKeyToken = b03f5f7f11d50a3a'或其依赖项之一。系统找不到指定的文件。

在我的本地计算机上，它可以正常工作，但是在服务器上，它会引发上述错误，因此在某处必须缺少文件。请参阅更新3，我尝试添加丢失的dll，然后引发另一个错误。

我遵循了这些链接中的说明：

正如上一个链接中所述，在相同的场景下，我不想迁移（https://docs.microsoft.com/en-us/nuget/consume-packages/migrate-packages-config-to-package-reference），因为我不想遇到不兼容的情况，因此我首先要修复当前问题。

我已经寻找了System.Net.Http的所有参考（以及其他参考文献）并手动更改了版本号，这是我的.vbproj文件中的旧代码块：

<Reference Include="System.Net.Http, Version=4.1.1.3, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
  <HintPath>packages\System.Net.Http.4.3.4\lib\net46\System.Net.Http.dll</HintPath>
  <Private>True</Private>
  <Private>True</Private>
</Reference>
<Reference Include="System.Runtime, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
  <HintPath>packages\System.Runtime.4.3.0\lib\net462\System.Runtime.dll</HintPath>
  <Private>True</Private>
  <Private>True</Private>
</Reference>
<Reference Include="System.Runtime.Serialization" />
<Reference Include="System.Security.Cryptography.Algorithms, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
  <HintPath>packages\System.Security.Cryptography.Algorithms.4.3.0\lib\net463\System.Security.Cryptography.Algorithms.dll</HintPath>
  <Private>True</Private>
  <Private>True</Private>
</Reference>
<Reference Include="System.Security.Cryptography.Encoding, Version=4.0.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
  <HintPath>packages\System.Security.Cryptography.Encoding.4.3.0\lib\net46\System.Security.Cryptography.Encoding.dll</HintPath>
  <Private>True</Private>
  <Private>True</Private>
</Reference>
<Reference Include="System.Security.Cryptography.Primitives, Version=4.0.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
  <HintPath>packages\System.Security.Cryptography.Primitives.4.3.0\lib\net46\System.Security.Cryptography.Primitives.dll</HintPath>
  <Private>True</Private>
  <Private>True</Private>
</Reference>
<Reference Include="System.Security.Cryptography.X509Certificates, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
  <HintPath>packages\System.Security.Cryptography.X509Certificates.4.3.0\lib\net461\System.Security.Cryptography.X509Certificates.dll</HintPath>
  <Private>True</Private>
  <Private>True</Private>
</Reference>

这是我最新的.vbproj文件：

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="15.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <Import Project="packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.2.0.0\build\net46\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.props" Condition="Exists('packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.2.0.0\build\net46\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.props')" />
  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
  <PropertyGroup>
    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
    <ProductVersion>
    </ProductVersion>
    <SchemaVersion>2.0</SchemaVersion>
    <ProjectGuid>{6455BF17-B42E-4854-96B1-D4D0E7767B0C}</ProjectGuid>
    <ProjectTypeGuids>{349c5851-65df-11da-9384-00065b846f21};{F184B08F-C81C-45F6-A57F-5ABD9991F28F}</ProjectTypeGuids>
    <OutputType>Library</OutputType>
    <RootNamespace>MyProject</RootNamespace>
    <AssemblyName>MyProject</AssemblyName>
    <TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
    <OptionExplicit>On</OptionExplicit>
    <OptionCompare>Binary</OptionCompare>
    <OptionStrict>Off</OptionStrict>
    <OptionInfer>On</OptionInfer>
    <MvcBuildViews>false</MvcBuildViews>
    <UseIISExpress>true</UseIISExpress>
    <Use64BitIISExpress />
    <IISExpressSSLPort>44316</IISExpressSSLPort>
    <IISExpressAnonymousAuthentication />
    <IISExpressWindowsAuthentication />
    <IISExpressUseClassicPipelineMode />
    <UseGlobalApplicationHostFile />
    <NuGetPackageImportStamp>
    </NuGetPackageImportStamp>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
    <DebugSymbols>true</DebugSymbols>
    <DebugType>full</DebugType>
    <DefineDebug>true</DefineDebug>
    <DefineTrace>true</DefineTrace>
    <OutputPath>bin\</OutputPath>
    <DocumentationFile>MyProject.xml</DocumentationFile>
    <NoWarn>42016,41999,42017,42018,42019,42032,42036,42020,42021,42022</NoWarn>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
    <DebugSymbols>true</DebugSymbols>
    <DebugType>pdbonly</DebugType>
    <DefineDebug>false</DefineDebug>
    <DefineTrace>true</DefineTrace>
    <Optimize>true</Optimize>
    <OutputPath>bin\</OutputPath>
    <DocumentationFile>MyProject.xml</DocumentationFile>
    <NoWarn>42016,41999,42017,42018,42019,42032,42036,42020,42021,42022</NoWarn>
  </PropertyGroup>
  <ItemGroup>
    <Reference Include="AjaxControlToolkit, Version=16.1.1.0, Culture=neutral, PublicKeyToken=28f01b0e84b6d53e, processorArchitecture=MSIL">
      <SpecificVersion>False</SpecificVersion>
      <HintPath>bin\AjaxControlToolkit.dll</HintPath>
    </Reference>
    <Reference Include="aspnetforum, Version=7.2.7.0, Culture=neutral, processorArchitecture=MSIL">
      <SpecificVersion>False</SpecificVersion>
      <HintPath>bin\aspnetforum.dll</HintPath>
    </Reference>
    <Reference Include="Hammock, Version=1.0.0.0, Culture=neutral, PublicKeyToken=c148cfba29ed1a4d, processorArchitecture=MSIL">
      <SpecificVersion>False</SpecificVersion>
      <HintPath>bin\Hammock.dll</HintPath>
    </Reference>
    <Reference Include="Hammock.ClientProfile, Version=1.0.0.0, Culture=neutral, PublicKeyToken=c148cfba29ed1a4d, processorArchitecture=MSIL">
      <SpecificVersion>False</SpecificVersion>
      <HintPath>bin\Hammock.ClientProfile.dll</HintPath>
    </Reference>
    <Reference Include="HtmlAgilityPack, Version=1.7.1.0, Culture=neutral, PublicKeyToken=bd319b19eaf3b43a, processorArchitecture=MSIL">
      <SpecificVersion>False</SpecificVersion>
      <HintPath>bin\HtmlAgilityPack.dll</HintPath>
    </Reference>
    <Reference Include="Microsoft.AspNet.FriendlyUrls, Version=1.0.2.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
      <SpecificVersion>False</SpecificVersion>
      <HintPath>bin\Microsoft.AspNet.FriendlyUrls.dll</HintPath>
    </Reference>
    <Reference Include="Mollie, Version=2.0.2.0, Culture=neutral, processorArchitecture=MSIL">
      <HintPath>packages\Mollie.Net.2.0.2\lib\netstandard2.0\Mollie.dll</HintPath>
    </Reference>
    <Reference Include="Mollie.Api, Version=1.0.0.0, Culture=neutral, processorArchitecture=MSIL">
      <SpecificVersion>False</SpecificVersion>
      <HintPath>bin\Mollie.Api.dll</HintPath>
    </Reference>
    <Reference Include="MySql.Data, Version=6.6.5.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d, processorArchitecture=MSIL">
      <SpecificVersion>False</SpecificVersion>
      <HintPath>bin\MySql.Data.dll</HintPath>
    </Reference>
    <Reference Include="Newtonsoft.Json, Version=12.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
      <HintPath>packages\Newtonsoft.Json.12.0.2\lib\net45\Newtonsoft.Json.dll</HintPath>
    </Reference>
    <Reference Include="PresentationCore" />
    <Reference Include="PresentationFramework" />
    <Reference Include="skmValidators, Version=1.0.0.0, Culture=neutral, processorArchitecture=MSIL">
      <SpecificVersion>False</SpecificVersion>
      <HintPath>bin\skmValidators.dll</HintPath>
    </Reference>
    <Reference Include="System" />
    <Reference Include="System.ComponentModel.Composition" />
    <Reference Include="System.Data" />
    <Reference Include="System.Drawing" />
    <Reference Include="System.IO, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
      <HintPath>packages\System.IO.4.3.0\lib\net462\System.IO.dll</HintPath>
      <Private>True</Private>
      <Private>True</Private>
    </Reference>

    <Reference Include="System.Net.Http, Version=4.3.4, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
      <HintPath>packages\System.Net.Http.4.3.4\lib\net46\System.Net.Http.dll</HintPath>
      <Private>True</Private>
      <Private>True</Private>
    </Reference>
    <Reference Include="System.Runtime, Version=4.3.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
      <HintPath>packages\System.Runtime.4.3.0\lib\net462\System.Runtime.dll</HintPath>
      <Private>True</Private>
      <Private>True</Private>
    </Reference>
    <Reference Include="System.Runtime.Serialization" />
    <Reference Include="System.Security.Cryptography.Algorithms, Version=4.3.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
      <HintPath>packages\System.Security.Cryptography.Algorithms.4.3.0\lib\net463\System.Security.Cryptography.Algorithms.dll</HintPath>
      <Private>True</Private>
      <Private>True</Private>
    </Reference>
    <Reference Include="System.Security.Cryptography.Encoding, Version=4.3.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
      <HintPath>packages\System.Security.Cryptography.Encoding.4.3.0\lib\net46\System.Security.Cryptography.Encoding.dll</HintPath>
      <Private>True</Private>
      <Private>True</Private>
    </Reference>
    <Reference Include="System.Security.Cryptography.Primitives, Version=4.3.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
      <HintPath>packages\System.Security.Cryptography.Primitives.4.3.0\lib\net46\System.Security.Cryptography.Primitives.dll</HintPath>
      <Private>True</Private>
      <Private>True</Private>
    </Reference>
    <Reference Include="System.Security.Cryptography.X509Certificates, Version=4.3.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
      <HintPath>packages\System.Security.Cryptography.X509Certificates.4.3.0\lib\net461\System.Security.Cryptography.X509Certificates.dll</HintPath>
      <Private>True</Private>
      <Private>True</Private>
    </Reference>

    <Reference Include="System.Core" />
    <Reference Include="System.Web" />
    <Reference Include="System.Web.Services" />
    <Reference Include="System.EnterpriseServices" />
    <Reference Include="System.Net.Http.WebRequest">
    </Reference>
    <Reference Include="System.Web.Helpers, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
      <Private>True</Private>
      <HintPath>packages\Microsoft.AspNet.WebPages.3.2.7\lib\net45\System.Web.Helpers.dll</HintPath>
    </Reference>
    <Reference Include="System.Web.Mvc, Version=5.2.7.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
      <Private>True</Private>
      <HintPath>packages\Microsoft.AspNet.Mvc.5.2.7\lib\net45\System.Web.Mvc.dll</HintPath>
    </Reference>
    <Reference Include="System.Web.Optimization">
      <HintPath>packages\Microsoft.AspNet.Web.Optimization.1.1.3\lib\net40\System.Web.Optimization.dll</HintPath>
    </Reference>
    <Reference Include="System.Web.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
      <Private>True</Private>
      <HintPath>packages\Microsoft.AspNet.Razor.3.2.7\lib\net45\System.Web.Razor.dll</HintPath>
    </Reference>
    <Reference Include="System.Web.WebPages, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
      <Private>True</Private>
      <HintPath>packages\Microsoft.AspNet.WebPages.3.2.7\lib\net45\System.Web.WebPages.dll</HintPath>
    </Reference>
    <Reference Include="System.Web.WebPages.Deployment, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
      <Private>True</Private>
      <HintPath>packages\Microsoft.AspNet.WebPages.3.2.7\lib\net45\System.Web.WebPages.Deployment.dll</HintPath>
    </Reference>
    <Reference Include="System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
      <Private>True</Private>
      <HintPath>packages\Microsoft.AspNet.WebPages.3.2.7\lib\net45\System.Web.WebPages.Razor.dll</HintPath>
    </Reference>
    <Reference Include="TweetSharp, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c148cfba29ed1a4d, processorArchitecture=MSIL">
      <SpecificVersion>False</SpecificVersion>
      <HintPath>bin\TweetSharp.dll</HintPath>
    </Reference>
    <Reference Include="WebGrease">
      <Private>True</Private>
      <HintPath>packages\WebGrease.1.6.0\lib\WebGrease.dll</HintPath>
    </Reference>
    <Reference Include="Antlr3.Runtime">
      <Private>True</Private>
      <HintPath>packages\Antlr.3.5.0.2\lib\Antlr3.Runtime.dll</HintPath>
    </Reference>
    <Reference Include="WindowsBase" />
  </ItemGroup>
  <ItemGroup>
    <Reference Include="Newtonsoft.Json">
      <HintPath>packages\Newtonsoft.Json.11.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
    </Reference>
    <Reference Include="System.Net.Http.Formatting">
      <HintPath>packages\Microsoft.AspNet.WebApi.Client.5.2.7\lib\net45\System.Net.Http.Formatting.dll</HintPath>
    </Reference>
    <Reference Include="System.Web.Http">
      <HintPath>packages\Microsoft.AspNet.WebApi.Core.5.2.7\lib\net45\System.Web.Http.dll</HintPath>
    </Reference>
    <Reference Include="System.Web.Http.WebHost">
      <HintPath>packages\Microsoft.AspNet.WebApi.WebHost.5.2.7\lib\net45\System.Web.Http.WebHost.dll</HintPath>
    </Reference>
    <Reference Include="Microsoft.CodeDom.Providers.DotNetCompilerPlatform">
      <HintPath>packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.2.0.0\lib\net45\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.dll</HintPath>
    </Reference>
  </ItemGroup>
  <ItemGroup>
    <Import Include="System" />
    <Import Include="System.Collections" />
    <Import Include="System.Collections.Generic" />
    <Import Include="System.Data" />
    <Import Include="System.Linq" />
    <Import Include="System.Xml.Linq" />
    <Import Include="System.Diagnostics" />
    <Import Include="System.Collections.Specialized" />
    <Import Include="System.Configuration" />
    <Import Include="System.Text" />
    <Import Include="System.Text.RegularExpressions" />
    <Import Include="System.Web" />
    <Import Include="System.Web.Caching" />
    <Import Include="System.Web.Mvc" />
    <Import Include="System.Web.Mvc.Ajax" />
    <Import Include="System.Web.Mvc.Html" />
    <Import Include="System.Web.Routing" />
    <Import Include="System.Web.SessionState" />
    <Import Include="System.Web.Security" />
    <Import Include="System.Web.Profile" />
    <Import Include="System.Web.UI" />
    <Import Include="System.Web.UI.WebControls" />
    <Import Include="System.Web.UI.WebControls.WebParts" />
    <Import Include="System.Web.UI.HtmlControls" />
  </ItemGroup>
  <ItemGroup>
    <Folder Include="App_Data\" />
    <Folder Include="App_WebReferences\" />
    <Folder Include="Models\" />
  </ItemGroup>
  <PropertyGroup>
    <VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">10.0</VisualStudioVersion>
    <VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>
  </PropertyGroup>
  <Import Project="$(MSBuildBinPath)\Microsoft.VisualBasic.targets" />
  <Import Project="$(VSToolsPath)\WebApplications\Microsoft.WebApplication.targets" Condition="'$(VSToolsPath)' != ''" />
  <Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v10.0\WebApplications\Microsoft.WebApplication.targets" Condition="false" />
  <Target Name="MvcBuildViews" AfterTargets="AfterBuild" Condition="'$(MvcBuildViews)'=='true'">
    <AspNetCompiler VirtualPath="temp" PhysicalPath="$(WebProjectOutputDir)" />
  </Target>
  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
    <PropertyGroup>
      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
    </PropertyGroup>
    <Error Condition="!Exists('packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.2.0.0\build\net46\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.props')" Text="$([System.String]::Format('$(ErrorText)', 'packages\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.2.0.0\build\net46\Microsoft.CodeDom.Providers.DotNetCompilerPlatform.props'))" />
  </Target>
  <!-- To modify your build process, add your task inside one of the targets below and uncomment it.
       Other similar extension points exist, see Microsoft.Common.targets.
  <Target Name="BeforeBuild">
  </Target>
  <Target Name="AfterBuild">
  </Target> -->
</Project>

我的packages.config 

<?xml version="1.0" encoding="utf-8"?>
<packages>
  <package id="Antlr" version="3.5.0.2" targetFramework="net472" />
  <package id="bootstrap" version="3.4.1" targetFramework="net472" />
  <package id="jQuery" version="3.3.1" targetFramework="net472" />
  <package id="jQuery.Validation" version="1.17.0" targetFramework="net472" />
  <package id="Microsoft.AspNet.Mvc" version="5.2.7" targetFramework="net472" />
  <package id="Microsoft.AspNet.Razor" version="3.2.7" targetFramework="net472" />
  <package id="Microsoft.AspNet.Web.Optimization" version="1.1.3" targetFramework="net472" />
  <package id="Microsoft.AspNet.WebApi" version="5.2.7" targetFramework="net472" />
  <package id="Microsoft.AspNet.WebApi.Client" version="5.2.7" targetFramework="net472" />
  <package id="Microsoft.AspNet.WebApi.Core" version="5.2.7" targetFramework="net472" />
  <package id="Microsoft.AspNet.WebApi.WebHost" version="5.2.7" targetFramework="net472" />
  <package id="Microsoft.AspNet.WebPages" version="3.2.7" targetFramework="net472" />
  <package id="Microsoft.CodeDom.Providers.DotNetCompilerPlatform" version="2.0.0" targetFramework="net472" />
  <package id="Microsoft.jQuery.Unobtrusive.Validation" version="3.2.11" targetFramework="net472" />
  <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net472" />
  <package id="Modernizr" version="2.8.3" targetFramework="net472" />
  <package id="Mollie.Net" version="2.0.2" targetFramework="net472" />
  <package id="Newtonsoft.Json" version="12.0.2" targetFramework="net472" />
  <package id="System.IO" version="4.3.0" targetFramework="net472" />
  <package id="System.Net.Http" version="4.3.4" targetFramework="net472" />
  <package id="System.Runtime" version="4.3.0" targetFramework="net472" />
  <package id="System.Security.Cryptography.Algorithms" version="4.3.0" targetFramework="net472" />
  <package id="System.Security.Cryptography.Encoding" version="4.3.0" targetFramework="net472" />
  <package id="System.Security.Cryptography.Primitives" version="4.3.0" targetFramework="net472" />
  <package id="System.Security.Cryptography.X509Certificates" version="4.3.0" targetFramework="net472" />
  <package id="WebGrease" version="1.6.0" targetFramework="net472" />
</packages>

我还注释了我的web.config中的整个<runtime>部分（包含assemblyBindings）。

仍然，错误仍然存​​在，我该怎么办？

更新1

根据@welotty的回答，我执行了以下操作：

我从VS2019开发人员命令提示符处运行fuslogvw，但我只是看到一个空白窗口（没有应用程序）：

enter image description here

我看不到可以为我的特定应用选择要分析的目录或任何其他设置的地方。

更新2

基于@welotty的评论，我运行了fuslogvw。我清除了所有消息，在Visual Studio 2019中构建了我的应用，现在看到了（没有提及System.Net.Http）：

enter image description here

我打开了System.IO日志，下面在日志中得到了此日志，但也没有提及System.Net.Http）

*** Assembly Binder Log Entry  (24-Aug-2019 @ 4:47:53 PM) ***

The operation failed.
Bind result: hr = 0x80070002. The system cannot find the file specified.

Assembly manager loaded from:  C:\Windows\Microsoft.NET\Framework\v4.0.30319\clr.dll
Running under executable  C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Current\Bin\MSBuild.exe
--- A detailed error log follows. 

=== Pre-bind state information ===
LOG: DisplayName = System.IO
 (Partial)
WRN: Partial binding information was supplied for an assembly:
WRN: Assembly Name: System.IO | Domain ID: 1
WRN: A partial bind occurs when only part of the assembly display name is provided.
WRN: This might result in the binder loading an incorrect assembly.
WRN: It is recommended to provide a fully specified textual identity for the assembly,
WRN: that consists of the simple name, version, culture, and public key token.
WRN: See whitepaper http://go.microsoft.com/fwlink/?LinkId=109270 for more information and common solutions to this issue.
LOG: Appbase = file:///C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/MSBuild/Current/Bin/
LOG: Initial PrivatePath = NULL
LOG: Dynamic Base = NULL
LOG: Cache Base = NULL
LOG: AppName = MSBuild.exe
Calling assembly : Microsoft.Build.Tasks.Core, Version=15.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a.
===
LOG: This bind starts in default load context.
LOG: Using application configuration file: C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Current\Bin\MSBuild.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: Policy not being applied to reference at this time (private, custom, partial, or location-based assembly bind).
LOG: Attempting download of new URL file:///C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/MSBuild/Current/Bin/System.IO.DLL.
LOG: Attempting download of new URL file:///C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/MSBuild/Current/Bin/System.IO/System.IO.DLL.
LOG: Attempting download of new URL file:///C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/MSBuild/Current/Bin/System.IO.EXE.
LOG: Attempting download of new URL file:///C:/Program Files (x86)/Microsoft Visual Studio/2019/Community/MSBuild/Current/Bin/System.IO/System.IO.EXE.
LOG: All probing URLs attempted and failed.

*** Assembly Binder Log Entry  (24-Aug-2019 @ 4:47:53 PM) ***

The operation failed.
Bind result: hr = 0x80070002. The system cannot find the file specified.

首先：我将如何解决这些问题？日志显示The system cannot find the file specified，其次：我认为这与我的实际问题无关？

更新3

我注意到生产服务器上System.Net.Http.dll文件夹中实际上缺少bin。 因此，我从本地计算机复制了dll。但是，我得到了错误：

  

无法加载参考程序集以执行。

我检查了here，但是对于像将新的dll添加到bin文件夹这样简单的操作来说，这似乎太复杂了。 并且不确定是否重要，但是我的产品服务器没有以下文件夹：C：\ Program Files（x86）\ Reference Assemblies \ Microsoft \ Framework.NETFramework \ v4.7.2。

为什么会出现此错误？

enter image description here

3 个答案:

答案 0 :(得分：3)

我知道这很旧，但是今天我遇到了一个.net 4.8项目。我能够找到问题所在，对我来说，我正在通过Swashbuckle使用Swagger。它使用需要System.Net.Http v4.0.0.0的WebActivatorEx，绑定将其重定向到最新版本4.2.0.0，因此这是我的解决方法。在我的web.config中。请注意，newVersion不是最新版本，而是WebActivator Ex使用和要求的版本。

  <dependentAssembly>
    <assemblyIdentity name="System.Net.Http" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
    <bindingRedirect oldVersion="0.0.0.0-4.2.0.0" newVersion="4.0.0.0" />
  </dependentAssembly>

答案 1 :(得分：1)

这不能回答您的问题，但是使用fuslogvw来跟踪此类问题我很幸运。默认情况下，它已随Visual Studio一起安装，并记录在

https://docs.microsoft.com/en-us/dotnet/framework/tools/fuslogvw-exe-assembly-binding-log-viewer

一旦运行它（它很简单，您可以将其复制到另一台计算机上而无需安装任何东西），它将确切告诉您发生问题的原因：

  

该工具显示有关所选绑定失败的以下详细信息：

     

绑定失败的特定原因，例如“找不到文件”或“版本不匹配”。

     

有关启动绑定的应用程序的信息，包括其名称，应用程序的根目录（AppBase）和私有搜索路径的描述（如果有）。

     

该工具正在寻找的程序集的身份。

     

已应用的任何应用程序，发布者或管理员版本策略的描述。

     

是否在全局程序集缓存中找到该程序集。

     

所有探测URL的列表。

答案 2 :(得分：1)

您是否已为4.7.2安装了适当的框架/开发人员软件包？

dotnet.microsoft.com/download/dotnet-framework/net472

相关问题
最新问题