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Unity[依赖]注入和继承

unity-container dependency-injection inheritance c#

Ami · 技术社区 · 16 年前

我的问题如下:

public class ApplicationController : Controller
{
    [Dependency]
    protected ILogger _logger { get; set; }

}

public class HomeController : ApplicationController
{
    public HomeController()
    {

    }
    public ActionResult Index()
    {
        _logger.Log("Home controller constructor started.");
        ViewData["Message"] = "Welcome to ASP.NET MVC!";

        return View();
    }

    public ActionResult About()
    {
        return View();
    }
}

public class UnityControllerFactory : DefaultControllerFactory
{
    private readonly IUnityContainer _container;
    public UnityControllerFactory(IUnityContainer container)
    {
        _container = container;
    }

    protected override IController GetControllerInstance(Type controllerType)
    {
        return _container.Resolve(controllerType) as IController;
    }
}

protected void Application_Start()
    {
        _container = new UnityContainer();
        _container.RegisterType<ILogger, Logger.Logger>();
        UnityControllerFactory factory = new UnityControllerFactory(_container);
        ControllerBuilder.Current.SetControllerFactory(factory);

        RegisterRoutes(RouteTable.Routes);
    }

谢谢, 阿米。

4 回复 | 直到 16 年前

Jakob Christensen 16 年前

AFAIK,Unity只会解决公共财产。因此,您的受保护财产将无法解决。

Samuel Carrijo 16 年前

我也不确定[Dependency]属性是否适用于派生类型。如果你将其更改为构造函数注入,这仍然不起作用吗?类似于:

public class ApplicationController : Controller
{
    protected ILogger _logger { get; set; }


    public ApplicationController(ILogger logger)
    {
         this._logger = logger;

    }
}

public class HomeController : ApplicationController
{
    public HomeController(ILogger logger) : base(logger)
    {

    }
    public ActionResult Index()
    {
        _logger.Log("Home controller constructor started.");
        ViewData["Message"] = "Welcome to ASP.NET MVC!";

        return View();
    }

    public ActionResult About()
    {
        return View();
    }
}

其余的都一样。代码看起来不错。