如何在 ASP.NET MVC 中使用小写路由? [英] How can I have lowercase routes in ASP.NET MVC?

问题描述

如何在 ASP.NET MVC 中使用小写和下划线(如果可能)路由?这样我就有 /dinners/details/2 调用 DinnersController.Details(2) 并且，如果可能的话，/dinners/more_details/2调用 DinnersController.MoreDetails(2)?

How can I have lowercase, plus underscore if possible, routes in ASP.NET MVC? So that I would have /dinners/details/2 call DinnersController.Details(2) and, if possible, /dinners/more_details/2 call DinnersController.MoreDetails(2)?

所有这一切，同时仍然使用像 {controller}/{action}/{id} 这样的模式.

All this while still using patterns like {controller}/{action}/{id}.

推荐答案

在 System.Web.Routing 4.5 中，您可以通过设置 RouteCollection 的 LowercaseUrls 属性来实现这一点:

With System.Web.Routing 4.5 you may implement this straightforward by setting LowercaseUrls property of RouteCollection:

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

        routes.LowercaseUrls = true;

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

此外，假设您出于 SEO 原因这样做，您希望将传入的 url 重定向为小写(如本文中的许多链接所述).

Also assuming you are doing this for SEO reasons you want to redirect incoming urls to lowercase (as said in many of the links off this article).

protected void Application_BeginRequest(object sender, EventArgs e)
    {
        //You don't want to redirect on posts, or images/css/js
        bool isGet = HttpContext.Current.Request.RequestType.ToLowerInvariant().Contains("get");
        if (isGet && !HttpContext.Current.Request.Url.AbsolutePath.Contains("."))
        {
            //You don't want to modify URL encoded chars (ex.: %C3%8D that's code to Í accented I) to lowercase, than you need do decode the URL
            string urlLowercase = Request.Url.Scheme + "://" + HttpUtility.UrlDecode(HttpContext.Current.Request.Url.Authority + HttpContext.Current.Request.Url.AbsolutePath);
            //You want to consider accented chars in uppercase check
            if (Regex.IsMatch(urlLowercase, @"[A-Z]") || Regex.IsMatch(urlLowercase, @"[ÀÈÌÒÙÁÉÍÓÚÂÊÎÔÛÃÕÄËÏÖÜÝÑ]"))
            {
                //You don't want to change casing on query strings
                urlLowercase = urlLowercase.ToLower() + HttpContext.Current.Request.Url.Query;

                Response.Clear();
                Response.Status = "301 Moved Permanently";
                Response.AddHeader("Location", urlLowercase);
                Response.End();
            }
        }
    }

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