.NET Core 2.1 Lambda函数在运行时出现FileNotFoundException，导致netstandard函数失败。

Question

我有一个.NET Core 2.1 Lambda函数。csproj文件是这样的。

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>netcoreapp2.1</TargetFramework>
    <GenerateRuntimeConfigurationFiles>true</GenerateRuntimeConfigurationFiles>
    <AWSProjectType>Lambda</AWSProjectType>
  </PropertyGroup>
  <ItemGroup>
    <None Remove="chromium.br" />
  </ItemGroup>
  <ItemGroup>
    <Content Include="chromium.br">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </Content>
  </ItemGroup>
  <ItemGroup>
    <PackageReference Include="Amazon.Lambda.Core" Version="1.1.0" />
    <PackageReference Include="amazon.lambda.logging.aspnetcore" Version="3.0.0" />
    <PackageReference Include="amazon.lambda.serialization.json" Version="1.7.0" />
    <PackageReference Include="microsoft.extensions.dependencyinjection" Version="3.1.3" />
    <PackageReference Include="microsoft.extensions.logging" Version="3.1.3" />
    <PackageReference Include="mono.posix.NETStandard" Version="1.0.0" />
    <PackageReference Include="puppeteersharp" Version="2.0.2" />
  </ItemGroup>
  <ItemGroup>
    <Reference Include="HeadlessChromium.Puppeteer.Lambda.Dotnet">
      <HintPath>..\HeadlessChromium.Puppeteer.Lambda.Dotnet\HeadlessChromium.Puppeteer.Lambda.Dotnet.dll</HintPath>
    </Reference>
  </ItemGroup>
</Project>

项目编译了，但在运行时（即在Lambda环境中），应用程序出现了失败的消息。

Could not load file or assembly 'netstandard, Version=2.1.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. The system cannot find the file specified

我如何纠正这个问题？

Answer 1

我意识到，我使用的HeadlessChromium.Puppeteer.Lambda.Dotnet.dll是针对.NET标准2.1编译的。使用.NET Core 2.1 DLL反而解决了这个问题。