Azure功能->；无法将IServiceProvider或IFunctionsHostBuilder注入工厂类构造函数

我指的是解释如何在Azure函数中实现DI的链接。我想实现一个

工厂

模式，其中我的

工厂类

应该能够在构造工厂对象时解析其他依赖项

这是代码

public class Startup : FunctionsStartup
{
    public override void Configure(IFunctionsHostBuilder builder)
    {

        System.Console.WriteLine("***************************I am in startup....");
        builder.Services.AddScoped<PayloadProcessorFactory>();
        
        /*  I tried to explicitly add IFunctionsHostBuilder to Services but its not working.
            builder.Services.AddScoped<IFunctionsHostBuilder>((s) =>{
            System.Console.WriteLine("test");                
            return builder;
        });*/

        /*No problem with below two dependencies and are getting injected without any issue*/
        builder.Services
        .AddScoped<IPayloadProcessor,DoctorPayloadProcessor>()
        .AddScoped<DoctorPayloadProcessor>();

        builder.Services
        .AddScoped<IPayloadProcessor,PatientPayloadProcessor>()
        .AddScoped<PatientPayloadProcessor>();
    }
}

问题 如何将

IServiceProvider

注入到我的工厂类中，以构建复杂的对象并解决多个依赖关系

项目详细信息

• Dotnet框架-netcoreapp2.1
• Azure功能版本：2.0

---

下面是一个在.NET内核中使用DI的工厂模式示例。 您不需要注入服务提供者来解析这些类
样本工厂界面

public interface IFactory
{
    IWorker Create(WorkerType workerType);
}

public interface IWorker
{
    WorkerType WorkerType { get; } // This can be an enum.
    void DoWork();
}

示例工厂实现

public class Factory: IFactory
{
    private readonly IEnumerable<IWorker> _workers;

    public AuthenticationEngineFactory(IEnumerable<IWorker> workers)
    {
        _workers = workers;
    }

    public IWorker Create(WorkerType workerType)
    {
        var worker = _workers.FirstOrDefault(x => x.WorkerType == workerType);
        if (worker is null) throw new System.ArgumentException($"Worker with type '{workerType}' is not supported.");
        return worker;
    }
}

示例工人实现

public class Worker1Implementation : IWorker
{
     public WorkerType WorkerType => WorkerType.WorkerType1;

     public void DoWork() {}; // Add implementation
}

public class Worker2Implementation : IWorker
{
     public WorkerType WorkerType => WorkerType.WorkerType2;

     public void DoWork() {}; // Add implementation
}

在函数Startup.cs中

builder.Services.AddSingleton<IFactory, Factory>();
builder.Services.AddScoped<IWorker, Worker1Implementation>();
builder.Services.AddScoped<IWorker, Worker2Implementation>();

builder.Services.AddSingleton（）；
builder.Services.addScope（）；
builder.Services.addScope（）；

public interface IWorker
{
    WorkerType WorkerType { get; } // This can be an enum.
    void DoWork();
}

public class Worker1Implementation : IWorker
{
     public WorkerType WorkerType => WorkerType.WorkerType1;

     public void DoWork() {}; // Add implementation
}

public class Worker2Implementation : IWorker
{
     public WorkerType WorkerType => WorkerType.WorkerType2;

     public void DoWork() {}; // Add implementation
}

builder.Services.AddSingleton<IFactory, Factory>();
builder.Services.AddScoped<IWorker, Worker1Implementation>();
builder.Services.AddScoped<IWorker, Worker2Implementation>();