asp.net-mvc - ASP.NET MVC，操作 URL 结构

Question

如何在 ASP.NET MVC 中创建自定义路由处理程序？

Answer 1

ASP.NET MVC 可以轻松地在 Global.asax.cs 中创建自定义路由处理程序:

    routes.MapRoute(
        "Default",
        "{controller}.aspx/{action}/{id}",
        new { action = "Index", id = "" }
      ).RouteHandler = new SubDomainMvcRouteHandler();

这将导致所有请求都由指定的自定义 RouteHandler 处理。对于这个特定的处理程序:

    public class SubDomainMvcRouteHandler : MvcRouteHandler
    {
        protected override IHttpHandler GetHttpHandler(System.Web.Routing.RequestContext requestContext)
        {
            return new SubDomainMvcHandler(requestContext);
        }
    }

然后您可以做任何您想做的事情，在本例中，SubDomainMvcHandler 从 URL 中获取子域并将其作为属性传递给 Controller ​​:

    public class SubDomainMvcHandler : MvcHandler
    {
        public SubDomainMvcHandler(RequestContext requestContext) : base(requestContext)
        {
        }

        protected override void ProcessRequest(HttpContextBase httpContext)
        {
            // Identify the subdomain and add it to the route data as the account name
            string[] hostNameParts = httpContext.Request.Url.Host.Split('.');

            if (hostNameParts.Length == 3 && hostNameParts[0] != "www")
            {
                RequestContext.RouteData.Values.Add("accountName", hostNameParts[0]);
            }

            base.ProcessRequest(httpContext);
        }
    }