everlight.eap/backend/WebBusiness/WebBusiness.csproj

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

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    <TargetFramework>netcoreapp2.1</TargetFramework>
    <UserSecretsId>064de254-6cc7-41ec-9248-37ebf62ad5cf</UserSecretsId>
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  <ItemGroup>
    <PackageReference Include="log4net.AspNetCore" Version="1.0.0" />
    <PackageReference Include="Microsoft.AspNetCore.App" />
    <PackageReference Include="Microsoft.AspNetCore.Razor.Design" Version="2.1.2" PrivateAssets="All" />
    <PackageReference Include="Microsoft.Extensions.Logging.Log4Net.AspNetCore" Version="3.1.0" />
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  <ItemGroup>
    <ProjectReference Include="..\..\DataAcc\Cksoft.Unity\Cksoft.Unity.csproj" />
    <ProjectReference Include="..\DllBusinessServer\DllBusinessServer.csproj" />
  </ItemGroup>

  <ItemGroup>
    <Reference Include="DllEapDal">
      <HintPath>..\DllEapDal\bin\Debug\netstandard2.0\DllEapDal.dll</HintPath>
    </Reference>
  </ItemGroup>
  <ItemGroup>
    <Content Update="appsettings.json">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </Content>
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</Project>