Question

在structuremap中配置实现两个接口但是单例的对象的正确方法是什么。

例如，类Main同时实现iMainFrmService和iActiveJobService。

这是我尝试过的，但我不确定它是否正确。

ObjectFactory.Initialize(pExpression=>
{
  pExpression.ForSingletonOf<iMainFrmService>().Use<Main>();
  pExpression.ForSingletonOf<iActiveJobService>().Use<Main>();
});

Answer 1

如上面评论所链接的the answer中所述，x.Forward< , >()确实为这两个接口提供了单例。

请查看此dotnetfiddle以获取有效的样本。这是在那里张贴的片段：

using System;
using StructureMap;

namespace StructureMapSingleton {
    public class Program {
        public static void Main(string [] args) {
            Bootstrapper.Initialize();

            var mainService = Bootstrapper.GetInstance<IMainService>();
            mainService.MainMethod();

            var secondaryService = Bootstrapper.GetInstance<ISecondaryService>();
            secondaryService.SecondMethod();

            Console.ReadLine();
        }
    }

    public interface IMainService {
        void MainMethod();
    }

    public interface ISecondaryService {
        void SecondMethod();
    }

    public class MainService : IMainService, ISecondaryService {
        private int _invokeCount;

        public void MainMethod() {
            this._invokeCount++;
            Console.WriteLine("In MainService: MainMethod ({0})", this._invokeCount);
        }

        public void SecondMethod() {
            this._invokeCount++;
            Console.WriteLine("In MainService: SecondMethod ({0})", this._invokeCount);
        }
    }

    public class Bootstrapper {
        private static Container _container;

        public static void Initialize() {
            _container = new Container(x => {
                                           x.For<IMainService>().Singleton().Use<MainService>();
                                           //x.For<ISecondaryService>().Singleton().Use<MainService>();
                                           x.Forward<IMainService, ISecondaryService>();
                                       });
        }

        public static T GetInstance<T>() {
            return _container.GetInstance<T>();
        }
    }
}

注册实现两个接口的单例

1 个答案: