标签：blog http 使用 io strong art ar cti
DefaultControllerFactory 是MVC默认的Controller查找和激活工厂类
我们可以通过自定义ControllerFactory替换DefaultControllerFactory类来实现IOC的引入
public class DefaultControllerFactory : IControllerFactory
{
//其他成员
public DefaultControllerFactory();
public DefaultControllerFactory(IControllerActivator controllerActivator);
}
public interface IControllerActivator//Controller激活器接口
{
IController Create(RequestContext requestContext, Type controllerType);
}
//此类是DefaultControllerFactory的私有内部类，调用DefaultControllerFactory的默认构造函数或者IControllerActivator参数为null时，默认使用此内部类来激活Controller
private class DefaultControllerActivator : IControllerActivator
{
private Func<IDependencyResolver> _resolverThunk;用来返回IDependencyResolver实现类的实例
public DefaultControllerActivator();
public DefaultControllerActivator(IDependencyResolver resolver);
public IController Create(RequestContext requestContext, Type controllerType);
}
//用来获取Controller对象的
public interface IDependencyResolver
{
object GetService(Type serviceType);
IEnumerable<object> GetServices(Type serviceType);
}
//此类是用来封装管理IDependencyResolver类的实现类的。
public class DependencyResolver
{
private static DependencyResolver _instance;
public void InnerSetResolver(object commonServiceLocator);
public void InnerSetResolver(IDependencyResolver resolver);
public void InnerSetResolver(Func<Type, object> getService, Func<Type, IEnumerable<object>> getServices);
public static void SetResolver(object commonServiceLocator);
public static void SetResolver(IDependencyResolver resolver);
public static void SetResolver(Func<Type, object> getService, Func<Type, IEnumerable<object>> getServices);
public static IDependencyResolver Current { get; }
public IDependencyResolver InnerCurrent { get; }
}
类关系图（图片引用自蒋金楠老师的博客）：
总结：实例化DefaultControllerFactory类，如果IControllerActivator参数等于null或者没有传入参数，则DefaultControllerFactory类就会创建一个内部私有IControllerActivator接口实现类(DefaultControllerActivator)的实例
用来激活Controller类，而DefaultControllerActivator类会先判断内部私有委托resolverThunk是否为空，如果为空就返回DependencyResolver.Current静态属性下的IDependencyResolver实现类的实例，用来真正的创建激活
Controller类；如果不为空，就执行这个委托获得IDependencyResolver实现类的实例来激活Controller。（MVC默认是通过反射来激活Controller的）
Asp.net MVC的Controller激活理解,布布扣,bubuko.com
标签：blog http 使用 io strong art ar cti
原文地址：http://www.cnblogs.com/lxiang/p/3897293.html
