MVC设置默认页面的几个方法

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

          routes.MapRoute(
              name: "Default",
              url: "{controller}/{action}/{id}",
              defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
          );
      }
}

protected void Application_BeginRequest(object sender, EventArgs e)
{
    if (Context.Request.FilePath == "/")
        HttpContext.Current.Response.Redirect("/home/about");
}

<system.webServer>
    <defaultDocument>
      <files>
        <clear/><!--防止在iis配置默认文档中冲突-->
        <add value="index.html" />
      </files>
    </defaultDocument>
</system.webServer>