Question

我正在尝试构建一个应该以英语和德语提供的ASP.NET Core应用程序。我的问题是IViewLocalizer总是返回德语文本，即使文化设置为英语。如何获得当前文化的正确文本？

Startup.cs

public void ConfigureServices(IServiceCollection services)
{       
    services.AddLocalization(opt => opt.ResourcesPath = "Resources");
    services.AddMvc()
        .AddViewLocalization(LanguageViewLocationExpanderFormat.Suffix);
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
    var cultures = new[] { new CultureInfo("en"), new CultureInfo("de") };
    app.UseRequestLocalization(new RequestLocalizationOptions 
    {
        DefaultRequestCulture = new RequestCulture("en"),
        SupportedCultures = cultures,
        SupportedUICultures = cultures                
    });

    app.UseMvc(routes =>
    {
          routes.MapRoute(
               name: "default",
               template: "{controller=Home}/{action=Index}/{id?}");
    });
}

HomeController.cs

public class HomeController : Controller
{
    public IActionResult Index()
    {
        return View();
    }
}

Index.cshtml

<!DOCTYPE html>
@using Microsoft.AspNetCore.Mvc.Localization;
@inject IViewLocalizer Localizer
<html>
    <body>
        <h1>@Localizer["Hello, World!"]</h1>
        <ul>
            <li>CurrentCulture: @System.Globalization.CultureInfo.CurrentCulture</li>
            <li>CurrentUICulture: @System.Globalization.CultureInfo.CurrentUICulture</li>
        </ul>
    </body>
</html>

资源文件位于Resources\Views.Home.Index.de.resx

预期产出：

Hello, World!

CurrentCulture: en
CurrentUICulture: en

页面输出：

Hallo Welt!

CurrentCulture: en
CurrentUICulture: en

请求标题：

GET / HTTP/1.1
Host: localhost:61904
Connection: keep-alive
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.106 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Encoding: gzip, deflate, sdch
Accept-Language: en-US,en;q=0.8,es;q=0.6,de;q=0.4

Answer 1

我从昨天起就遇到了同样的问题。看起来LocalizationProvider无法设置正确的文化。实现自定义LocalizationProvider后，IViewLocalizer也开始完美地适用于Views和ViewComponents。

我还必须通过以下方式将语言实现到url中：

http://somedomain.com/<2-letter-iso-language-name>/controller/action

这是我做的：

<强> Startup.cs

public static string defaultCulture = "uk-UA";

public static List<CultureInfo> supportedCultures
{
    get
    {
        return new List<CultureInfo> {
            new CultureInfo("en-US"),
            new CultureInfo("uk-UA"),
            new CultureInfo("de-DE") };
    }
}

在ConfigureServices方法中，我添加了CultureToUrlActionFilter()。它从url检索2个字母的语言代码并设置正确的CultureInfo。如果网址包含不允许的文化代码，则会重定向到默认文化。

public void ConfigureServices(IServiceCollection services)
{
    services
        .AddLocalization(options => options.ResourcesPath = "Resources")
        .AddMvc(options => { options.Filters.Add(new CultureToUrlActionFilter()); })
        .AddViewLocalization()
        .AddDataAnnotationsLocalization();
}

在Configure方法中，我设置了自定义本地化提供程序，并将其作为第一个插入提供程序队列中：

var options = new RequestLocalizationOptions() { 
    DefaultRequestCulture = new RequestCulture(defaultCulture),
    SupportedCultures = supportedCultures, 
    SupportedUICultures = supportedCultures };
options.RequestCultureProviders.Insert(0, new UrlCultureProvider());
app.UseRequestLocalization(options);

如果网址后面没有包含文化代码的网址，我会重定向到http://somedomain/<2-letter-culture-code>（默认文化版）。网址必须始终指定文化。

路线：

app.UseMvc(routes => {
     routes.MapRoute("home_empty", "", defaults: new { culture="", controller = "Home", action = "Redirect" });
     routes.MapRoute("home", "{culture}", defaults: new { controller = "Home", action = "Index" });

我在HomeController，Redirect action

中重定向它

<强> HomeController.cs

public IActionResult Redirect() { 
    return RedirectToAction("Index", new { culture = Startup.defaultCulture }); 
}

<强> UrlCultureProvider.cs

using Microsoft.AspNetCore.Localization;
using System;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
using System.Globalization;

namespace astika.Models
{
public class UrlCultureProvider: IRequestCultureProvider {

    public Task<ProviderCultureResult> DetermineProviderCultureResult(HttpContext httpContext)
    {
        if (httpContext == null) throw new ArgumentNullException(nameof(httpContext));
        var pathSegments = httpContext.Request.Path.Value.Trim('/').Split('/');

        string url_culture = pathSegments[0].ToLower();

        CultureInfo ci = Startup.supportedCultures.Find(x => x.TwoLetterISOLanguageName.ToLower() == url_culture);
        if (ci == null) ci = new CultureInfo(Startup.defaultCulture);

        CultureInfo.CurrentCulture = CultureInfo.CurrentUICulture = ci; 

        var result = new ProviderCultureResult(ci.Name, ci.Name);
        return Task.FromResult(result);
    }
}
}

<强> CultureToUrlActionFilter.cs

using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Filters;
using Microsoft.AspNetCore.Routing;
using System;
using System.Globalization;

namespace astika.Models
{
public class CultureToUrlActionFilter : IActionFilter
{
    public void OnActionExecuted(ActionExecutedContext context) { }

    public void OnActionExecuting(ActionExecutingContext context)
    {
        bool redirect = false;
        string culture = context.RouteData.Values["culture"].ToString().ToLower();

        redirect = String.IsNullOrEmpty(culture);

        if (!redirect)
        {
            try
            {
                CultureInfo ci = new CultureInfo(culture);
                redirect = Startup.supportedCultures.FindIndex(x => x.TwoLetterISOLanguageName.ToLower() == culture) < 0;
            }
            catch
            {
                redirect = true;
            }
        }


        if (redirect)
        {
            CultureInfo cid = new CultureInfo(Startup.defaultCulture);
            context.Result = new RedirectToRouteResult(new RouteValueDictionary(new { culture = cid.TwoLetterISOLanguageName, controller = "Home", action = "Index" }));
        }
    }
}
}

resx文件都位于同一文件夹中 /Resources/Views.Home.Index.en.resx /Resources/Views.Home.Index.de.resx /Resources/Views.Shared.Components.Navigation.Default.en.resx 等

IViewLocalizer返回错误的语言

1 个答案: