經典的IoC/DI容器--StructureMap

StructureMap是一款很老的IoC/DI容器，從2004年.NET 1.1支援至今。

一個使用例子

    //建立業務介面    public interface IDispatchService { }    public interface ICourier { }    public interface IPaymentGateway { }    public interface IPaymentMerchant { }    //介面的實現    public class DispacthService : IDispatchService    {        private ICourier _courier;        public DispacthService(ICourier courier)        {            _courier = courier;        }        public override string ToString()        {            return _courier.ToString();        }    }    public class FedExCourier : ICourier { }    public class StreamLinePaymentMerchant : IPaymentMerchant { }    public class PaymentGateway : IPaymentGateway    {        private IPaymentMerchant _paymentMerchant;        public PaymentGateway(IPaymentMerchant paymentMerchant)        {            _paymentMerchant = paymentMerchant;        }        public override string ToString()        {            return _paymentMerchant.ToString();        }    }    //業務使用    public class OrderService    {        private IPaymentGateway _paymentGateway;        private IDispatchService _dispacthService;        public OrderService(IPaymentGateway paymentGateway, IDispatchService dispacthService)        {            _paymentGateway = paymentGateway;            _dispacthService = dispacthService;        }        public override string ToString()        {            return string.Format("IPaymentGateway:{0}  IDispatchService:{1}", _paymentGateway.ToString(), _dispacthService.ToString());        }    }    //配置依賴關係    public class BootStrapper    {        public static void ConfigureStructureMap()        {            ObjectFactory.Initialize(x => x.AddRegistry<ModelRegistry>());        }    }    public class ModelRegistry : Registry    {        public ModelRegistry()        {            For<IPaymentGateway>().Use<PaymentGateway>();            For<IPaymentMerchant>().Use<StreamLinePaymentMerchant>();            For<IDispatchService>().Use<DispacthService>();            For<ICourier>().Use<FedExCourier>();        }    }    class Program    {        static void Main(string[] args)        {            BootStrapper.ConfigureStructureMap();//啟用配置            OrderService orderService = ObjectFactory.GetInstance<OrderService>();            Console.WriteLine(orderService.ToString());            IPaymentGateway paymentGateway= ObjectFactory.GetInstance<PaymentGateway>();            Console.WriteLine(paymentGateway);            Console.ReadKey();        }    }