示例代碼html
項目啓動時,建立依賴注入容器git
定義一靜態容器 IWindsorContainergithub
1 private static IWindsorContainer _container; web
在 Application_Start() 中,建立該容器api
1 _container = new WindsorContainer(); asp.net
調用 Container Install 方法,向容器內註冊組件post
1 _container.Install(FromAssembly.This()); spa
該語句會調用整個程序集中全部實現了 IWindsorInstaller 接口類中的Install方法以向容器的註冊組件。以下列代碼:.net
1 public void Install(IWindsorContainer container, IConfigurationStore store) 2 { 3 container.Register( 4 Component.For<IDPlatypusRepository>().ImplementedBy<DPlatypusRepository>().LifestylePerWebRequest()); 5 }
特別列出向 Container 中註冊 Controler 的代碼:code
1 public void Install(IWindsorContainer container, IConfigurationStore store) 2 { 3 container.Register(Classes.FromThisAssembly() 4 .BasedOn<ApiController>().LifestylePerWebRequest()); 5 }
定義實現 IDependencyResolver 接口的 WindsorDependencyResolver 類,做爲全局 HttpConfiguration 的 Resolver
var dependencyResolver = new WindsorDependencyResolver(_container); configuration.DependencyResolver = dependencyResolver;
建立一新 IHttpControllerActivator,更改 Controller 建立方式爲從容器 Container 中獲取
實現 IHttpControllerActivator 接口 Create 方法
1 public IHttpController Create(HttpRequestMessage request, HttpControllerDescriptor controllerDescriptor, Type controllerType) 2 { 3 var controller = (IHttpController)_container.Resolve(controllerType); 4 5 request.RegisterForDispose( 6 new Release(() => _container.Release(controller))); 7 8 return controller; 9 }
而且註冊當 web request 被 Dispose 的時候,Dispose 該 Controller。
替換 Default IHttpControllerActivator 行爲
GlobalConfiguration.Configuration.Services.Replace(typeof(IHttpControllerActivator), new WindsorCompositionRoot(container));
參考資料:
Simplest Possible ASP.NET Web API Project that Implements IoC/DI using Castle Windsor
http://www.codeproject.com/Articles/710662/Simplest-Possible-ASP-NET-Web-API-Project-that-Imp
WebAPI Dependency Injection
https://github.com/ucdavis/UCDArch/wiki/WebAPI-Dependency-Injection
Difference between inheriting ApiController vs. IHttpController
ASP.NET WEB API 2: HTTP MESSAGE LIFECYLE
http://www.asp.net/posters/web-api/asp.net-web-api-poster.pdf
使用 Castle Windsor 實現 Web API 依賴注入
http://beginor.github.io/2014/12/21/webapi-dependency-injection-with-castle-windsor.html