使用StructureMap也可以实现在MVC中的依赖注入，为此，我们不仅要使用StructureMap注册各种接口及其实现，还需要自定义控制器工厂，借助StructureMap来生成controller实例。
有这样的一个接口：
namespace MvcApplication1
{
public interface IStrategy
{
string GetStrategy();
}
}
2个接口实现：
namespace MvcApplication1
{
public class AttackStrategy : IStrategy
{
public string GetStrategy()
{
return "进攻阵型";
}
}
} 和 namespace MvcApplication1
{
public class DefenceStrategy : IStrategy
{
public string GetStrategy()
{
return "防守阵型";
}
}
}
借助StructureMap(通过NuGet安装)自定义控制器工厂：
using System.Web;
using System.Web.Mvc;
using StructureMap; namespace MvcApplication1
{
public class StrategyControllerFactory : DefaultControllerFactory
{
protected override IController GetControllerInstance(System.Web.Routing.RequestContext requestContext, System.Type controllerType)
{
if (controllerType == null)
{
throw new HttpException(404, "没有找到相关控制器");
}
return ObjectFactory.GetInstance(controllerType) as IController;
}
}
}
在全局中注册控制器工厂以及注册接口和默认实现：
ObjectFactory.Initialize(cfg => cfg.For<IStrategy>().Use<AttackStrategy>());
ControllerBuilder.Current.SetControllerFactory(new StrategyControllerFactory());
HomeController中：
using System.Web.Mvc; namespace MvcApplication1.Controllers
{
public class HomeController : Controller
{
private IStrategy _strategy; public HomeController(IStrategy strategy)
{
this._strategy = strategy;
} public ActionResult Index()
{
ViewData["s"] = _strategy.GetStrategy();
return View();
} }
}
Home/Index.cshtml中：
@{
ViewBag.Title = "Index";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<h2>Index</h2>
@ViewData["s"].ToString()
结果显示：进攻阵型