控制器上的多个路由

想知道是否有可能有多个路由指向WebApi控制器？

例如,我想同时将http:// domain/calculate和http:// domain/v2/calculate指向同一个控制器函数？

public static class WebApiConfig
    {
        public static void Register(HttpConfiguration config)
        {
            // Web API configuration and services
            // Configure Web API to use only bearer token authentication.
            config.SuppressDefaultHostAuthentication();
            config.Filters.Add(new HostAuthenticationFilter(OAuthDefaults.AuthenticationType));

            // Web API routes
            config.MapHttpAttributeRoutes();

            config.Routes.MapHttpRoute(
                name: "route1",
                routeTemplate: "calculate",
                defaults: new { controller = "Calculator", action = "Get" });

            config.Routes.MapHttpRoute(
                name: "route2",
                routeTemplate: "v2/calculate",
                defaults: new { controller = "Calculator", action = "Get" });

            config.Routes.MapHttpRoute(
                name: "DefaultApi",
                routeTemplate: "api/{controller}/{id}",
                defaults: new { id = RouteParameter.Optional }
            );
        }
    }

要么

public class CalculatorController: ApiController
{
    [Route("calculate")]
    [Route("v2/calculate")]
    public String Get() {
        return "xxxx";
    }
}