经典的IoC/DI容器--StructureMap-木庄网络博客

本文摘自PHP中文网，作者零下一度，侵删。

StructureMap是一款很老的IoC/DI容器，从2004年.NET 1.1支持至今。

一个使用例子

//创建业务接口
public interface IDispatchService { }
public interface ICourier { }
public interface IPaymentGateway { }
public interface IPaymentMerchant { }
 
//接口的实现
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();
    }
}
 
//业务使用
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());
    }
}
 
//配置依赖关系
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();//启用配置
 
 
        OrderService orderService = ObjectFactory.GetInstance<OrderService>();
        Console.WriteLine(orderService.ToString());
 
        IPaymentGateway paymentGateway= ObjectFactory.GetInstance<PaymentGateway>();
        Console.WriteLine(paymentGateway);
 
        Console.ReadKey();
    }
}