使用 MVC 的属性路由和 RouteLocalization.mvc 的语言特定的默认 URL

Question

我希望能够为我的网站创建一个简洁的特定于语言的默认 URL，以便当有人浏览到：

somesite.com

他们被重定向到语言文化页面，例如：

• somesite.com/en-US/
• somesite.com/sp-MX/
• somesite.com/fr-FR/

具体来说，我不希望将 /Home/Index 附加到 URL：

• somesite.com/en-US/Home/Index
• somesite.com/sp-MX/Home/Index
• somesite.com/fr-FR/Home/Index

我致力于使用 RouteLocalization.mvc 制作这个网站

• Dresel/RouteLocalization
• Translating Your ASP.NET MVC Routes

我想在可行的范围内使用 MVC 属性路由。

我无法弄清楚如何在不添加“索引”之类的内容的情况下将 Start() 方法重定向到特定于语言文化的 URL。

我尝试过的示例如下：

using RouteLocalization.Mvc;
using RouteLocalization.Mvc.Extensions;
using RouteLocalization.Mvc.Setup;

public class RouteConfig
{
    public static void RegisterRoutes(RouteCollection routes)
    {
        routes.Clear();

        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

        routes.MapMvcAttributeRoutes(Localization.LocalizationDirectRouteProvider);

        const string en = "en-us";
        ISet<string> acceptedCultures = new HashSet<string>() { en, "de", "fr", "es", "it" };

        routes.Localization(configuration =>
        {
            configuration.DefaultCulture = en;
            configuration.AcceptedCultures = acceptedCultures;
            configuration.AttributeRouteProcessing = AttributeRouteProcessing.AddAsNeutralAndDefaultCultureRoute;
            configuration.AddCultureAsRoutePrefix = true;
            configuration.AddTranslationToSimiliarUrls = true;
        }).TranslateInitialAttributeRoutes().Translate(localization =>
        {
            localization.AddRoutesTranslation();
        });

        CultureSensitiveHttpModule.GetCultureFromHttpContextDelegate = Localization.DetectCultureFromBrowserUserLanguages(acceptedCultures, en);

        var defaultCulture = System.Threading.Thread.CurrentThread.CurrentUICulture.Name;

        routes.MapRoute(
            name: "DefaultLocalized",
            url: "{culture}/{controller}/{action}/{id}",
            constraints: new { culture = @"(\w{2})|(\w{2}-\w{2})" }, 
            defaults: new { culture = defaultCulture, controller = "Home", action = "Index", id = UrlParameter.Optional }
        );

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

还有我的家庭控制器：

public class HomeController : Controller
{
    [HttpGet]
    [Route]
    public RedirectToRouteResult Start()
    {
        return RedirectToAction("Home", new { culture = Thread.CurrentThread.CurrentCulture.Name });
    }

    [Route("Index", Name = "Home.Index")]
    public ActionResult Index()
    {
        return View();
    }

    public ActionResult Contact()
    {
        return View();
    }

    public ActionResult About()
    {
        return View();
    }
}

我的 Global.asax 文件：

public class MvcApplication : System.Web.HttpApplication
{
    protected void Application_Start()
    {            
        FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
        RouteConfig.RegisterRoutes(RouteTable.Routes);
        AreaRegistration.RegisterAllAreas();
    }
}

Answer 1

重定向与路由不同。由于您将任何 URL 重定向到其本地化对应物的目标是一个跨领域问题，因此您最好的选择是制作一个全局过滤器。

public class RedirectToUserLanguageFilter : IActionFilter
{
    private readonly string defaultCulture;
    private readonly IEnumerable<string> supportedCultures;

    public RedirectToUserLanguageFilter(string defaultCulture, IEnumerable<string> supportedCultures)
    {
        if (string.IsNullOrEmpty(defaultCulture))
            throw new ArgumentNullException("defaultCulture");
        if (supportedCultures == null || !supportedCultures.Any())
            throw new ArgumentNullException("supportedCultures");

        this.defaultCulture = defaultCulture;
        this.supportedCultures = supportedCultures;
    }

    public void OnActionExecuting(ActionExecutingContext filterContext)
    {
        var routeValues = filterContext.RequestContext.RouteData.Values;

        // If there is no value for culture, redirect
        if (routeValues != null && !routeValues.ContainsKey("culture"))
        {
            string culture = this.defaultCulture;
            var userLanguages = filterContext.HttpContext.Request.UserLanguages;
            if (userLanguages.Length > 0)
            {
                foreach (string language in userLanguages.SelectMany(x => x.Split(';')))
                {
                    // Check whether language is supported before setting it.
                    if (supportedCultures.Contains(language))
                    {
                        culture = language;
                        break;
                    }
                }
            }

            // Add the culture to the route values
            routeValues.Add("culture", culture);

            filterContext.Result = new RedirectToRouteResult(routeValues);
        }
    }

    public void OnActionExecuted(ActionExecutedContext filterContext)
    {
        // Do nothing
    }
}

用法

public class FilterConfig
{
    public static void RegisterGlobalFilters(GlobalFilterCollection filters)
    {
        filters.Add(new RedirectToUserLanguageFilter("en", new string[] { "en", "de", "fr", "es", "it" }));
        filters.Add(new HandleErrorAttribute());
    }
}

另请注意，您的路由配置错误。每次应用程序启动都会运行一次路由设置，因此将默认文化设置为当前线程的文化是没有意义的。实际上，您根本不应该为您的文化路由设置默认文化，因为您希望它错过，所以如果没有文化集，您的 Default 路由将执行。

routes.MapRoute(
    name: "DefaultLocalized",
    url: "{culture}/{controller}/{action}/{id}",
    constraints: new { culture = @"(\w{2})|(\w{2}-\w{2})" },
    defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);

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