MVC三个IOC注入点之Ninject使用示例
2024-08-24 10:19:41
群里一个技术大牛说MVC有三个注入点,但我只会一个DefaultControllerFactory。 在群友的帮助下,我大致了解了下:
IControllerFactory=>IDependencyResolver=>IControllerActivator
这三者的关系如下:
其实从上面的关系可以看出来这三个注入点,相互都存在依赖关系。 我们还是老规矩上代码:
1.IControllerFactory 注入:
public class NInjectFactory:DefaultControllerFactory
{
private IKernel _iKernel;
public NInjectFactory(IKernel ikernel)
{
this._iKernel = ikernel;
AddBindHelper();
}
protected override IController GetControllerInstance(RequestContext requestContext, Type controllerType)
{
return controllerType == null ? null : (IController)_iKernel.Get(controllerType);
} public void AddBindHelper()
{ _iKernel.Bind(typeof(IProduct)).To(typeof(ProductService));
}
}
2.IControllerActivator 注入:
public class NinjectTwoControlActivator : IControllerActivator
{
private IKernel _ikernel;
public NinjectTwoControlActivator(IKernel ikernel)
{
this._ikernel = ikernel;
AddBindHelper();
} public IController Create(RequestContext requestContext, Type controllerType)
{
return controllerType == null ? null : (IController)_ikernel.Get(controllerType);
} public void AddBindHelper()
{
_ikernel.Bind(typeof(IProduct)).To(typeof(ProductService));
} }
3.IDependencyResolver注入:
public class NinjectThreeCotrolResolver:IDependencyResolver
{
private IKernel _ikernel;
public NinjectThreeCotrolResolver(IKernel ikernel)
{
this._ikernel = ikernel;
AddBindHelper();
} #region IDependencyResolver Members public object GetService(Type serviceType)
{
try
{
return _ikernel.Get(serviceType);
}
catch
{
return null;
}
} public IEnumerable<object> GetServices(Type serviceType)
{
return Enumerable.Empty<object>();
} #endregion public void AddBindHelper()
{
_ikernel.Bind(typeof(IProduct)).To(typeof(ProductService));
}
}
三个在Global.asax的绑定到全局代码如下:
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas(); //ControllerBuilder.Current.SetControllerFactory(new NInjectFactory(new Ninject.StandardKernel()));//注册Ninject Ioc //var factory = new DefaultControllerFactory(new NinjectTwoControlActivator(new Ninject.StandardKernel()));
//ControllerBuilder.Current.SetControllerFactory(factory); var dependencyResolver = new NinjectThreeCotrolResolver(new Ninject.StandardKernel());
DependencyResolver.SetResolver(dependencyResolver);
WebApiConfig.Register(GlobalConfiguration.Configuration);
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
}
前端控制器实现方式统一如下:
public class HomeController : Controller
{
private IProduct _iproduct;
public HomeController(IProduct iproduct)
{
this._iproduct = iproduct;
}
public ActionResult Index()
{
var list = new List<Product>()
{
new Product{ProductName="iphone4s",ProductPrice=3700},
new Product{ProductName="iphon5",ProductPrice=3400}
};
ViewBag.Price = _iproduct.GetAll(list); return View();
}
}
利用构造函数从容器中取出来对应的服务,好了,非常感谢群里的的技术指导。非常感谢
from: http://www.cnblogs.com/flyfish2012/p/3282261.html
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