asp.net-mvc-3 – ASP.NET MVC语言更改链接

public ActionResult ChangeCulture(string lang,string returnUrl)
{
    var langCookie = new HttpCookie("lang",lang)
    {
        HttpOnly = true
    };
    Response.AppendCookie(langCookie);
    return Redirect(returnUrl);
}

然后在Global.asax中,您可以订阅Application_AcquireRequestState事件,以便根据cookie的值设置当前的线程文化：

protected void Application_AcquireRequestState(object sender,EventArgs e)
{
    var langCookie = HttpContext.Current.Request.Cookies["lang"];
    if (langCookie != null)
    {
        var ci = new CultureInfo(langCookie.Value);
        //Checking first if there is no value in session 
        //and set default language 
        //this can happen for first user's request
        if (ci == null)
        {
            //Sets default culture to english invariant
            string langName = "en";

            //Try to get values from Accept lang HTTP header
            if (HttpContext.Current.Request.UserLanguages != null && HttpContext.Current.Request.UserLanguages.Length != 0)
            {
                //Gets accepted list 
                langName = HttpContext.Current.Request.UserLanguages[0].Substring(0,2);
            }

            langCookie = new HttpCookie("lang",langName)
            {
                HttpOnly = true
            };


            HttpContext.Current.Response.AppendCookie(langCookie);
        }

        //Finally setting culture for each request
        Thread.CurrentThread.CurrentUICulture = ci;
        Thread.CurrentThread.CurrentCulture = ci;

        //The line below creates issue when using default culture values for other
        //cultures for ex: NumericSepratore.
        //Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture(ci.Name);
    }
}

现在这是说使用cookies和会话来存储当前语言不是SEO友好.当我需要一个本地化的应用程序时,我喜欢做什么是使用一个特殊的路由,其中??包含语言：

routes.MapRoute(
    "Default","{lang}/{controller}/{action}/{id}",new 
    { 
        lang = "en-US",controller = "Home",action = "Index",id = UrlParameter.Optional 
    }
);

然后使用该语言对我的所有URL进行前缀.这为不同的语言提供唯一的URL,以便机器人可以正确地索引所有内容.现在剩下的是修改Application_AcquireRequestState方法,以便它使用url的lang标记,并根据其值设置正确的Thread.CurrentThread.CurrentUICulture和Thread.CurrentThread.CurrentCulture.

现在,当你想改变语言的时候,你只需要生成正确的链接：

@Html.ActionLink("Page index en fran?ais","index",new { lang = "fr-FR" })