ASP.NET-Router配置中MapRoute的参数

MapRoute( string name, string url);
MapRoute( string name, string url, object defaults);
MapRoute( string name, string url, string[] namespaces);
MapRoute( string name, string url, object defaults, object constraints); MapRoute( string name, string url, object defaults, string[] namespaces);
MapRoute( string name, string url, object defaults, object constraints, string[] namespaces);

routes.MapRoute(
     name: "Default2",
     url: "{controller}-{action}-{id}",
     defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional },
     constraints: new { 
           controller = @"\d{4}", 
           httpMethod = new HttpMethodConstraint("GET") }
);

// 酒店列表页匹配
routes.MapRoute(
     "酒店列表页",
     "hotels/{action}-{city}-{price}-{star}",
     new { controller = "Hotel", action = "list", city = "beijing", price = "-1,-1", star = "-1" },
     new { city = @"[a-zA-Z]*", price = @"(\d)+\,(\d)+", star = "[-1-5]" }
);
 
// 酒店频道所有匹配 
routes.MapRoute(
     "酒店首页",
     "hotels/{*iiii}",
     new { controller = "Hotel", action = "default", hotelid = "" }
);
 
// 网站首页默认匹配
routes.MapRoute(
     "网站首页",
     "{*values}",
     new { controller = "Home", action = "index" }
);