[英].NET Azure Functions - Dependency Injection Issue
在我的 Azure Function v2 項目中的 Startup.cs 上:
using Microsoft.Azure.Functions.Extensions.DependencyInjection;
using Microsoft.Extensions.DependencyInjection;
using MyCompany.MyLib.Contracts; //namespace from external library
[assembly: FunctionsStartup(typeof(Startup))]
namespace Test
{
public class Startup : FunctionsStartup
{
public override void Configure(IFunctionsHostBuilder builder)
{
builder.Services.AddTransient(typeof(Logging.ILogger<>), typeof(Logging.Logger<>));
builder.Services.AddTransient<IUserLogic, UserLogic>();
builder.Services.AddTransient<IBillingLogic, BillingLogic>(); //---> loads up from above referenced "MyCompany.MyLib.Contracts" namespace and this namespace is from externally referenced class library but with in same solution
}
}
}
上面的代碼在函數應用程序項目中使用我自己的自定義類,如“EmailLogic”、“Logger”工作正常。
但是,當我將自定義類添加到服務容器中時,例如來自外部 C# 庫項目的“BillingLogic” ,該項目作為參考項目從現有的 Visual Studio 解決方案中添加,它引發了以下問題:
"啟動操作期間發生主機錯誤 '945918c0-af3a-4d50-ab1d-ac405d4f1c7b'。[2/3/2020 2:11:02 PM] MyFunction.FunctionApp:無法加載文件或程序集 ' MyCompany.MyLib.Contracts , Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'。無法找到或加載特定文件。(來自 HRESULT 的異常:0x80131621)。System.Private.CoreLib:無法加載文件或程序集“ MyCompany.MyLib” .Contracts , Version=1.0.0.0, Culture=neutral, PublicKeyToken=null "
如果刪除“引用的外部項目”中的這些行,
using MyCompany.MyLib.Contracts;
builder.Services.AddTransient<IBillingLogic, BillingLogic>();
startup.cs 按預期工作,但我的解決方案必須從引用的項目中引用此外部類。
我的 Azure 函數 csproj 文件:
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<TargetFramework>netstandard2.0</TargetFramework>
<AzureFunctionsVersion>v2</AzureFunctionsVersion>
<GenerateAssemblyInfo>false</GenerateAssemblyInfo>
<AutoGenerateBindingRedirects>false</AutoGenerateBindingRedirects>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Microsoft.Azure.Functions.Extensions" Version="1.0.0" />
<PackageReference Include="Microsoft.Azure.Storage.Queue" Version="11.1.2" />
<PackageReference Include="Microsoft.Azure.WebJobs.Extensions.Storage" Version="3.0.8" />
<PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="2.2.0" />
<PackageReference Include="Microsoft.NET.Sdk.Functions" Version="1.0.29" />
<PackageReference Include="NLog" Version="4.6.8" />
<PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
<PackageReference Include="NLog.Extensions.AzureStorage" Version="1.1.4" />
<PackageReference Include="Microsoft.Azure.DocumentDB.Core" Version="2.9.2" />
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\MyCSharpLib.DataStore\MyCSharpLib.DataStore.csproj">
<Private>true</Private>
</ProjectReference>
</ItemGroup>
<ItemGroup>
<None Update="appsettings.json">
<CopyToOutputDirectory>Always</CopyToOutputDirectory>
<CopyToPublishDirectory>Always</CopyToPublishDirectory>
</None>
<None Update="host.json">
<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
</None>
<None Update="local.settings.json">
<CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
<CopyToPublishDirectory>Never</CopyToPublishDirectory>
</None>
<None Update="nlog.config">
<CopyToOutputDirectory>Always</CopyToOutputDirectory>
<CopyToPublishDirectory>Always</CopyToPublishDirectory>
</None>
</ItemGroup>
</Project>
MyCSharpLib.DataStore.csproj 文件:
<PropertyGroup>
<TargetFramework>netstandard2.0</TargetFramework>
<RuntimeIdentifier>win7-x64</RuntimeIdentifier>
<Platforms>x64</Platforms>
</PropertyGroup>
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" />
<ItemGroup>
<PackageReference Include="Microsoft.Azure.Cosmos.Table" Version="1.0.6" />
<PackageReference Include="Microsoft.Azure.DocumentDB.Core" Version="2.9.2" />
<PackageReference Include="Microsoft.Azure.Storage.Blob" Version="11.1.1" />
<PackageReference Include="Microsoft.CSharp" Version="4.7.0" />
<PackageReference Include="Newtonsoft.Json.Bson" Version="1.0.1" />
<PackageReference Include="Polly" Version="5.3.1" />
<PackageReference Include="StackExchange.Redis" Version="1.2.6" />
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\MyContractLib.Contracts\MyContractLib.Contracts.csproj" />
</ItemGroup>
</Project>
MyCSharpLib.DataStore
.\MyContractLib.Contracts\MyContractLib.Contracts.csproj
我的 Azure 函數 csproj 文件:
<ProjectReference Include="..\MyCSharpLib.DataStore\MyCSharpLib.DataStore.csproj">
所以
using MyCompany.MyLib.Contracts;
正在通過對 DataStore 的引用,然后對 MyContractLib.Contracts 的引用
但它並沒有把 dll 當作它的愚蠢來處理,所以要么讓 Azure 函數 csproj 引用 MyLib.Contracts 要么這樣做當我將 .NET Standard 2.0 DLL 庫與 .NET Framework 控制台應用程序一起使用時如何設置依賴項?
這是你所有的標准庫添加
<RestoreProjectStyle>PackageReference</RestoreProjectStyle>
所以在你的標准庫上
<PropertyGroup>
<TargetFramework>netstandard2.0</TargetFramework>
<RestoreProjectStyle>PackageReference</RestoreProjectStyle>
</PropertyGroup>
如果這不起作用,我將刪除
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