c# - VS 2017 RC asp.net core system.net.http冲突问题

Question

我已经在 .net 核心 Web 应用程序上工作了大约 3 个月。随着 VS2017 的发布，我想这个周末我会把它拉下来试试它的自动迁移以及新的 enviro。当我执行此操作时，除了 System.Net.Http 引用外，一切都很顺利。

我收到一条错误消息；

1>C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\MSBuild\15.0\Bin\Microsoft.Common.CurrentVersion.targets(1956,5): warning MSB3243: No way to resolve conflict between "System.Net.Http, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" and "System.Net.Http, Version=1.5.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a". Choosing "System.Net.Http, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" arbitrarily.
1>Consider app.config remapping of assembly "System.Net.Http, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" from Version "1.5.0.0" [C:\Users\reamj\.nuget\packages\microsoft.net.http\2.2.22\lib\portable-net40+sl4+win8+wp71+wpa81\System.Net.Http.dll] to Version "4.1.1.0" [C:\Users\reamj\.nuget\packages\system.net.http\4.3.0\ref\netstandard1.3\System.Net.Http.dll] to solve conflict and get rid of warning.

由于这是在 dll 中，我真的不确定如何解决这个问题。最好解决这个问题以利用 VS17。任何帮助是极大的赞赏!下面是我的 csproj(不再是 project.json)配置。

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>netcoreapp1.0</TargetFramework>
    <PreserveCompilationContext>true</PreserveCompilationContext>
    <AssemblyName>ProjectName</AssemblyName>
    <OutputType>Exe</OutputType>
    <PackageId>ProjectName</PackageId>
    <UserSecretsId>noooooooooooooooooooope</UserSecretsId>
    <RuntimeFrameworkVersion>1.0.3</RuntimeFrameworkVersion>
    <PackageTargetFallback>$(PackageTargetFallback);portable-net45+win8+wp8+wpa81;</PackageTargetFallback>
  </PropertyGroup>

  <ItemGroup>
    <Content Update="wwwroot\**\*;**\*.cshtml;appsettings.json;web.config">
      <CopyToPublishDirectory>PreserveNewest</CopyToPublishDirectory>
    </Content>
  </ItemGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="1.0.0-msbuild3-final">
      <PrivateAssets>All</PrivateAssets>
    </PackageReference>
    <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="1.0.0-msbuild3-final">
      <PrivateAssets>All</PrivateAssets>
    </PackageReference>
    <PackageReference Include="SendGrid.NetCore" Version="1.0.0-rtm-00002" />
   
    <PackageReference Include="MailKit" Version="1.10.2" />
    
    <PackageReference Include="Microsoft.AspNetCore.Authentication.Cookies" Version="1.1.0" />
    <PackageReference Include="Microsoft.AspNetCore.Diagnostics" Version="1.1.0" />
    <PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="1.1.0" />
    <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="1.1.0" />
    <PackageReference Include="Microsoft.AspNetCore.Mvc" Version="1.1.1" />
    <PackageReference Include="Microsoft.AspNetCore.Routing" Version="1.1.0" />
    <PackageReference Include="Microsoft.AspNetCore.Server.IISIntegration" Version="1.1.0" />
    <PackageReference Include="Microsoft.AspNetCore.Server.Kestrel" Version="1.1.0" />
    <PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="1.1.0" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="1.1.0" />
    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer.Design" Version="1.1.0" />
    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="1.1.0" />
    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="1.1.0" />
    <PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="1.1.0" />
    <PackageReference Include="Microsoft.Extensions.Logging" Version="1.1.0" />
    <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="1.1.0" />
    <PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="1.1.0" />
    <PackageReference Include="Microsoft.Extensions.Options.ConfigurationExtensions" Version="1.1.0" />
    <PackageReference Include="Microsoft.VisualStudio.Web.BrowserLink.Loader" Version="14.1.0" />
    <PackageReference Include="WindowsAzure.Storage" Version="8.1.0" />
    <!--<PackageReference Include="Telerik.UI.for.AspNet.Core" Version="2016.3.1118" />-->
    <PackageReference Include="Microsoft.AspNet.WebApi.Client" Version="5.2.3" />
  </ItemGroup>

  <Target Name="PrepublishScript" BeforeTargets="PrepareForPublish">
    <Exec Command="bower install" />
    <Exec Command="dotnet bundle" />
  </Target>

  <ItemGroup>
    <DotNetCliToolReference Include="Microsoft.EntityFrameworkCore.Tools.DotNet" Version="1.0.0-msbuild3-final" />
    <DotNetCliToolReference Include="Microsoft.Extensions.SecretManager.Tools" Version="1.0.0-msbuild3-final" />
    <DotNetCliToolReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Tools" Version="1.0.0-msbuild3-final" />
  </ItemGroup>

</Project>

Answer 1

尝试...

(1) 删除 <PackageReference Include="Microsoft.AspNet.WebApi.Client" Version="5.2.3" />(您不需要此包即可在 .net 核心上运行 WebApi。)

(2) 将 SendGrid 改为 <PackageReference Include="Sendgrid" Version="9.0.12" />