Question

为什么 IDependecyResolver 尝试获取 IControllerFactory 的实例，尽管我注册了 DefaultControllerFactory ？

的Global.asax：

ControllerBuilder.Current.SetControllerFactory(typeof(DefaultControllerFactory));
DependencyResolver.SetResolver(new StructureMapDependencyResolver());

解析器：

public class StructureMapDependencyResolver : IDependencyResolver
{
    public static Func<Type, object> GetServiceViaDepencencyCallback = t =>
    {
        throw new NotImplementedException(
            "StructureMapDependencyResolver is not configured!");
    };

    public static Func<Type, IEnumerable<object>> GetServicesViaDepencencyCallback = t =>
    {
        throw new NotImplementedException(
            "StructureMapDependencyResolver is not configured!");
    };

    public object GetService(Type serviceType)
    {
        return GetServiceViaDepencencyCallback(serviceType);
    }

    public IEnumerable<object> GetServices(Type serviceType)
    {
        return GetServicesViaDepencencyCallback(serviceType);
    }
}

抛出错误：

StructureMap异常代码：202 No. 为。定义的默认实例 PluginFamily System.Web.Mvc.IControllerFactory， System.Web.Mvc，Version = 3.0.0.0，文化=中性，公钥= 31bf3856ad364e35

Answer 1

在MVC3中，DependencyResolver（它是一个服务定位器）用于尝试查找适用的类型。如果找不到类型，则它将继续查看使用遗留代码，即ControllerBuilder.Current实例。这里重要的是它通过DependencyResolver检查您的StructureMap容器。 MVC3要求DependencyResolver在找不到类型时返回null，框架不负责从容器中捕获任何异常。

ASP.NET MVC 3：IDepencyResolver正在尝试获取IControllerFactory的实现

1 个答案: