使用 Castle Windsor 在 ASP.NET MVC 中设置控制反转 (IoC)

Question

我正在阅读 Sanderson 的 Pro ASP.NET MVC 框架，在第 4 章中他讨论了Creating a Custom Controller Factory，看来用于注册控制器的原始方法AddComponentLifeStyle 或AddComponentWithLifeStyle 现在已弃用：

public class WindsorControllerFactory : DefaultControllerFactory
{
    IWindsorContainer container;

    public WindsorControllerFactory()
    {
        container = new WindsorContainer(new XmlInterpreter(new ConfigResource("castle")));

        // register all the controller types as transient
        var controllerTypes = from t in Assembly.GetExecutingAssembly().GetTypes()
                              where typeof(IController).IsAssignableFrom(t)
                              select t;

        //[Obsolete("Use Register(Component.For<I>().ImplementedBy<T>().Named(key).Lifestyle.Is(lifestyle)) instead.")]
        //IWindsorContainer AddComponentLifeStyle<I, T>(string key, LifestyleType lifestyle) where T : class;
        foreach (Type t in controllerTypes)
        {
            container.Register(Component.For<IController>().ImplementedBy<???>().Named(t.FullName).LifeStyle.Is(LifestyleType.Transient));
        }
    }

    // Constructs the controller instance needed to service each request
    protected override IController GetControllerInstance(Type controllerType)
    {
        return (IController)container.Resolve(controllerType);
    }
}

新建议是使用Register(Component.For<I>().ImplementedBy<T>().Named(key).Lifestyle.Is(lifestyle))，但我不知道如何在ImplementedBy<???>() 方法中呈现实现控制器类型。我试过ImplementedBy<t>() 和ImplementedBy<typeof(t)>()，但是我找不到合适的方法来传入实现类型。有什么想法吗？

Answer 1

我正在使用ControllerBuilder.SetControllerFactory 和您可以在开源项目MvcContrib 中找到的代码：

Global.asax.cs

protected void Application_Start()
{
    ...

    IWindsorContainer windsorContainer = new WindsorContainer();
    windsorContainer.RegisterControllers(Assembly.GetExecutingAssembly());
    ControllerBuilder.Current.SetControllerFactory(new WindsorControllerFactory(windsorContainer));

    ...
}

WindsorControllerFactory

public class WindsorControllerFactory : DefaultControllerFactory
{
    private readonly IWindsorContainer _container;

    public WindsorControllerFactory(IWindsorContainer container)
    {
        if (container == null)
        {
            throw new ArgumentNullException();
        }

        _container = container;
    }

    protected override IController GetControllerInstance(RequestContext requestContext, Type controllerType)
    {
        if (controllerType == null)
        {
            throw new HttpException();
        }

        if (!typeof(IController).IsAssignableFrom(controllerType))
        {
            throw new ArgumentException();
        }

        try
        {
            return (IController)_container.Resolve(controllerType);
        }
        catch (Exception ex)
        {
            throw new InvalidOperationException();
        }
    }

    public override void ReleaseController(IController controller)
    {
        IDisposable disposable = controller as IDisposable;

        if (disposable != null)
        {
            disposable.Dispose();
        }

        _container.Release(controller);
    }
}

WindsorExtensions（参见MvcContrib）

public static class WindsorExtensions
{
    public static IWindsorContainer RegisterController<T>(this IWindsorContainer container) where T : IController
    {
        container.RegisterControllers(typeof(T));

        return container;
    }

    public static IWindsorContainer RegisterControllers(this IWindsorContainer container, params Type[] controllerTypes)
    {
        foreach (Type type in controllerTypes)
        {
            if (ControllerExtensions.IsController(type))
            {
                container.Register(Component.For(type).Named(type.FullName).LifeStyle.Is(LifestyleType.Transient));
            }
        }

        return container;
    }

    public static IWindsorContainer RegisterControllers(this IWindsorContainer container, params Assembly[] assemblies)
    {
        foreach (Assembly assembly in assemblies)
        {
            container.RegisterControllers(assembly.GetExportedTypes());
        }

        return container;
    }
}

ControllerExtensions（参见MvcContrib）

public static class ControllerExtensions
{
    public static bool IsController(Type type)
    {
        return type != null
               && type.Name.EndsWith("Controller", StringComparison.OrdinalIgnoreCase)
               && !type.IsAbstract
               && typeof(IController).IsAssignableFrom(type);
    }
}

Answer 2

您可能还想考虑在最新的 Windsor 版本中使用新的安装程序选项。 Windsor的教程还有更多文档：http://stw.castleproject.org/Windsor.Windsor-tutorial-part-three-writing-your-first-installer.ashx

Answer 3

有一个教程（正在编写中，但 9 部分已经发布）讨论了 Windsor 在 ASP.NET MVC here 中的用法。 据我所知，这是最新的，涵盖了该主题的大部分常用资源。

Answer 4

@Lirik，作为补充：如果您使用 MVC3，请删除您自己的自定义 IControllerFactory。只需向 Windsor 注册控制器并在其中使用 Windsor 容器实现IDependencyResolver。

将您的IDependencyResolver 设置为MVC DependencyResolver，DefaultControllerFactory 将自动连接在容器中注册的控制器（通过DependencyResolver）。

Answer 5

类似：

public void Register(IWindsorContainer container)
    {
        Assembly.GetAssembly(typeof(ControllersRegistrarMarker)).GetExportedTypes()
                .Where(IsController)
                .Each(type => container.AddComponentLifeStyle(
                                      type.Name.ToLower(),
                                      type,
                                      LifestyleType.Transient));
    }

ControllersRegistrarMarker 只是控制器程序集中的一个空类