请求的服务尚未注册!AutoFac依赖注入

Question

我只是尝试使用AutoFac来解决依赖关系,但它会抛出异常,例如

请求的服务"ProductService"尚未注册.要避免此异常,请注册组件以提供服务或使用IsRegistered()...

class Program
{
    static void Main(string[] args)
    {
        var builder = new ContainerBuilder();

        builder.RegisterType<ProductService>().As<IProductService>();

        using (var container = builder.Build())
        {
            container.Resolve<ProductService>().DoSomething();
        }
    }
}

public class ProductService : IProductService
{
    public void DoSomething()
    {
        Console.WriteLine("I do lots of things!!!");
    }
}

public interface IProductService
{
    void DoSomething();
}

我做错了什么？

Answer 1

声明:

builder.RegisterType<ProductService>().As<IProductService>();

每当有人试图解决IProductService给他们时,告诉AutofacProductService

所以你需要解决IProductService以下问题ProductService:

using (var container = builder.Build())
{
    container.Resolve<IProductService>().DoSomething();
}

或者,如果您想将其Resolve<ProductService>注册到AsSelf:

builder.RegisterType<ProductService>().AsSelf();