所以我有这样的程序架构(LibraryManager):
数据访问层具有类,必须管理数据并与演示者进行通信
public interface ILibraryDataManager
{
//some code...
}
public class LibraryDataManager:ILibraryDataManager
{
//some code...
}
原始的实现,不要在关注...... 接下来,在主项目实现类中: MessageService - 能够在程序中的任何位置显示消息
interface IMessageService
{
//some code
}
class MessageService : IMessageService
{
//some code
}
LoginService和MainService - 记录实现逻辑和应用程序的基本功能
public interface ILoginService
{
//some code
}
class LoginService : ILoginService
{
private readonly IMessageService messageServise;
private readonly ILibraryDataManager libraryDBManger;
public LoginService(IMessageService messageServise, ILibraryDataManager libraryDataManager)
{
this.messageServise = messageServise;
this.libraryDBManger = libraryDataManager;
}
//some code...
}
public interface IMainService
{
//some code
}
class MainService : IMainService
{
private readonly IMessageService messageService;
private readonly ILibraryDataManager libraryDBManger;
public MainService(ILibraryDataManager libraryDataManager, IMessageService messageService)
{
this.libraryDBManger = libraryDataManager;
this.messageService = messageService;
}
//some code...
}
此外,分别是IView接口及其衍生物接口和实现它们的类:
public interface IView
{
//some code...
}
public interface ILoginView: IView
{
//some code...
}
public partial class FormLogin : Form, ILoginView
{
//some code...
}
public interface IMainView: IView
{
//some code...
}
public partial class MainForm : Form, IMainView
{
//some code...
}
现在我们实现了链接元素 - 演示者:
public interface IPresenter
{
void Run(); // этот метод должен запускать соответствующую форму (IView), переданную презентеру в конструкторе
}
class LoginPresenter : IPresenter
{
private readonly ILoginView loginView;
private readonly ILoginService loginService;
private readonly IMessageService messageService;
public LoginPresenter(ILoginView loginView, ILoginService loginService, IMessageService messageService)
{
this.loginView = loginView;
this.loginService = loginService;
this.messageService = messageService;
}
public void Run()
{
loginView.Show();
}
//some code...
}
class MainPresenter : IPresenter
{
private readonly IMainView mainView;
private readonly IMessageService messageService;
private readonly IMainService mainService;
public MainPresenter (IMainView mainView, IMessageService messageService, IMainService mainService)
{
this.mainService = mainService;
this.mainView = mainView;
this.messageService = messageService;
}
public void Run()
{
Application.Run(mainView as Form);
}
现在我需要在容器中注册并尝试运行该应用程序:
static class Program
{
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
UnityContainer container = new UnityContainer();
container.RegisterType<ILibraryDataManager, LibraryDataManager>()
.RegisterType<IMessageService, MessageService>()
.RegisterType<ILoginService, LoginService>()
.RegisterType<ILoginView, FormLogin>()
.RegisterType<IMainView, MainForm>();
var obj = container.Resolve<MainPresenter>();
obj.Run();
}
}
但是,行obj.Run ()
未达到履行状态,如上一行
var obj = container.Resolve<MainPresenter>();
使用此类内容飞过例外:
Microsoft.Practices.Unity.ResolutionFailedException未处理 HResult = -2146233088消息=依赖关系的解析失败,输入 =&#34; Library.MainPresenter&#34;,name =&#34;(none)&#34;。在解决时发生异常:例外情况是:InvalidOperationException - 当前 type,Library.IMainService,是一个无法构造的接口。 你错过了类型映射吗? - - - - - - - - - - - - - - - - - - - - - - - - 当时例外,容器是:
解析Library.MainPresenter,(无)解析参数 &#34; mainService&#34;构造函数Library.MainPresenter(Library.IMainView mainView,Library.IMessageService messageService,Library.IMainService mainService)解析Library.IMainService,(无)
据我所知,它基于MainPresenter创建过程中的错误描述,并传递了尝试创建接口对象的UnityContainer参数,这当然是不可能的。但是在此之前我已经添加了&#34; Interface - class&#34;在一个容器中并且接受它,Unity必须创建一个相应的对象,然后将接口引用传递给它,结果是完全不同的。
对不起我笨拙的英语:\
答案 0 :(得分:1)
两个问题。
您错过了`IMainService&#39;到主服务&#39;如:
container.RegisterType<ILibraryDataManager, LibraryDataManager>()
.RegisterType<IMainService, MainService>()
并且您的MainService
类未声明为公开。