.NET Core 3.1 中的 Azure 函数 : dependency Injection error

Question

我已将一些 Azure Functions 从 .NET Core 2.2 迁移到 3.1，并为我的函数类实现了依赖项注入(inject)，但收到此错误:

Executed 'GetDataAsync' (Failed, Id=1f90c913-4385-4ef9-9f40-09e413191ba9, Duration=222ms)
[2022-03-30T19:43:43.143Z] Microsoft.Azure.WebJobs.Script.WebHost:
Registered factory delegate returns service is not assignable to ambiently scoped container with {no name, Parent={no name}}.
[2022-03-30T19:43:43.268Z] An unhandled host error has occurred.
[2022-03-30T19:43:43.272Z] Microsoft.Azure.WebJobs.Script.WebHost: Registered factory delegate returns service is not assignable to ambiently scoped container with {no name, Parent={no name}}.

 <PropertyGroup>
    <TargetFramework>netcoreapp3.1</TargetFramework>
    <AzureFunctionsVersion>v3</AzureFunctionsVersion>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="Common1" Version="1.0.33.3" />
    <PackageReference Include="Common2" Version="3.12.0.1" />
    <PackageReference Include="Microsoft.Azure.Functions.Extensions" Version="1.1.0" />
    <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.DurableTask" Version="2.6.1" />
    <PackageReference Include="Microsoft.Extensions.Configuration.AzureKeyVault" Version="3.1.23" />
    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="3.1.23" />
    <PackageReference Include="Microsoft.Extensions.Http" Version="3.1.23" />
    <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="3.1.23" />
    <PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="3.1.23" />
    <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="3.0.9" />
  </ItemGroup>

Answer 1

请检查以下步骤是否有帮助:

如下medium article ，在将依赖项注入(inject)添加到从 .NET 2.2 迁移的 Azure Functions 项目 v3 之一时，我解决了相同的错误:

我得到的错误:

Microsoft.Azure.WebJobs.Script.WebHost: Registered factory delegate returns service Microsoft.Extensions.Logging.LoggerFactory is not assignable to container. Value cannot be null. (Parameter 'provider')

在 Startup.cs 文件中，在 builder.Services.AddLogging 方法中注册 Serilog logger 和 Serilog Logger 使用自己的实例和所有配置创建。

// Startup.cs - Registering a third party logging provider
var logger = new LoggerConfiguration()
                .WriteTo.Console()
                .WriteTo.File("log.txt", rollingInterval: RollingInterval.Day)
                .CreateLogger();
builder.Services.AddLogging(lb => lb.AddSerilog(logger));

另外，请引用这个Microsoft Documentation帮助您了解 .NET Azure Functions 中依赖注入(inject)的使用。