【IT168技术文档】
在项目中使用Castle IOC容器，Asp.net程序中如何得到Castle容器内。
可以如下实现：
1、Gloabal实现接口IContainerAccessor
2、使用如下类来获取容器实例，这段代码来自Castle.MVCpublic class Global : System.Web.HttpApplication, IContainerAccessor { /// <summary> /// 必需的设计器变量。 /// </summary> private System.ComponentModel.IContainer components = null; private static WindsorContainer container; public Global() { InitializeComponent(); } protected void Application_Start(Object sender, EventArgs e) { container = new MyContainer(new XmlInterpreter("app_config.xml")); } protected void Session_Start(Object sender, EventArgs e) { } …… protected void Application_End(Object sender, EventArgs e) { container.Dispose(); } #region IContainerAccessor implementation public IWindsorContainer Container { get { return container; } } }
3、在具体的用户控件，页面的后置代码中通过ContainerWebAccessorUtil. ObtainContainer()获取容器实例。当然如果使用Castle.MVC，MVC框架也是这样用的,自己就不要这么麻烦了，可以将这个写在页面和控件的基类中。/// <summary> /// Uses the HttpContext and the <see cref="IContainerAccessor"/> /// to access the container instance. /// </summary> public abstract class ContainerWebAccessorUtil { /// <summary> /// 从application中获取一个容器实例 /// </summary> /// <returns>返回一个 IWindsorContainer</returns> public static IWindsorContainer ObtainContainer() { IContainerAccessor containerAccessor = HttpContext.Current.ApplicationInstance as IContainerAccessor; if (containerAccessor == null) { throw new ApplicationException("你必须在HttpApplication中实现接口 IContainerAccessor 暴露容器的属性”); } IWindsorContainer container = containerAccessor.Container; if (container == null) { throw new ApplicationException("HttpApplication 得不到容器的实例"); } return container; } }
