MVC 支持同名路由，不同命名空间

浏览数：26 / 时间：2015年06月09日

有时候我们会碰到两个项目合在一起，那么必然会碰到两个同名的controller，其实MVC在注册路由，添加Route的时候可以指定当前规则解析那个命名空间下的所有Controller。

注：Controller的调用是通过IControllerFactory，反射调用目标Controller，不指定目标命名空间，直接从BuildManager.GetReferencedAssemblies();如下。

  private static List<Type> controllerTypes = new List<Type>();
        /// <summary>
        /// 静态构造函数
        /// </summary>
        static DefaultControllerFactory()
        {
            var assemblys = BuildManager.GetReferencedAssemblies();
            foreach (Assembly assembly in assemblys)
            {
                var types = assembly.GetTypes().Where(a => typeof(IController).IsAssignableFrom(a));
                foreach (Type type in types)
                {
                    controllerTypes.Add(type);
                }
            }
        }

        /// <summary>
        /// 创建controller
        /// </summary>
        /// <param name="requestContext"></param>
        /// <param name="controllerName"></param>
        /// <returns></returns>
        public IController CreateController(RequestContext requestContext, string controllerName)
        {
            string typeName = controllerName + "Controller";
            Type controllerType = controllerTypes.FirstOrDefault(a => a.Name == typeName);
            if (controllerType != null)
            {
                return (IController)Activator.CreateInstance(controllerType);
            }
            return null;
        }

回归正题：如何支持多种命名空间

 public static void RegisterRoutes(RouteCollection routes)
        {
            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

            routes.MapRoute(
                name: "Default",
                url: "{controller}/{action}",
                defaults: new { controller = "Home", action = "Index" }, namespaces: new string[] { "MvcExpose.Controllers" }
            );
            routes.MapRoute("Admin", "Admin/{controller}/{action}",
                new { controller = "Home", action = "Index"}, new string[] { "MvcExpose.Admin.Controllers" });
        }