如何通过浏览器的语言在 Sitecore 中设置上下文语言？

Posted 2023-03-13

【中文标题】如何通过浏览器的语言在 Sitecore 中设置上下文语言？

【英文标题】：How to set context language in Sitecore by browser's language(s)?

【发布时间】：2014-12-31 09:11:35

【问题描述】：

我需要通过浏览器语言（语言）设置上下文语言并重定向到正确的语言版本。由于搜索引擎的索引，我还需要排除机器人。

【参考方案1】：

我找到了关于 "Browser Language Detection is Sitecore" from Mark Stiles 的文章，但这并不是我想要的，因为他完全覆盖了原生功能。

几个小时后，我创建了自己的语言解析器（Mark 也有部分代码），用于检测浏览器语言并在需要时进行重定向并排除机器人。

public class LanguageResolver : Sitecore.Pipelines.HttpRequest.LanguageResolver

    public override void Process(Sitecore.Pipelines.HttpRequest.HttpRequestArgs args)
    
        Assert.ArgumentNotNull(args, "args");
        Language lang = GetLanguageFromBrowser(args);
        if (lang != null)
        
            Sitecore.Context.Language = lang;
            // if current language doesn't match with default site language, it will do a redirect
            if (Sitecore.Context.Language.Name != Sitecore.Context.Site.Language)
            
                // do redirect
                UriBuilder uriBuilder = new UriBuilder(args.Context.Request.Url);
                uriBuilder.Path = Sitecore.Context.Language.Name + "/";
                HttpContext.Current.Response.Redirect(uriBuilder.Uri.ToString(), true);
                args.AbortPipeline();
            
        
        else
        
            base.Process(args);
        
    
    /// <summary>
    /// Gets language from browser but only when language cookie doesn't exist yet and URL is related to homepage
    /// Logic taken from https://markstiles.net/Blog/2013/04/01/browser-language-detection-in-sitecore.aspx
    /// </summary>
    /// <param name="args"></param>
    /// <returns></returns>
    public Language GetLanguageFromBrowser(Sitecore.Pipelines.HttpRequest.HttpRequestArgs args)
    
        // site must be inicialized, language si resolved only for homepage and a site must have in its configuration resolveBrowserLang="true" !
        if (IsBrowserLangDetectionAllowed(args))
        
            // default site language
            Language defaultLangPrefix = LanguageManager.GetLanguage(Sitecore.Context.Site.Language);
            // gets browser languages
            string[] userLangs = args.Context.Request.UserLanguages;
            if (userLangs != null && userLangs.Any())
            
                foreach (string userLang in userLangs)
                
                    // gets first part where information about language is stored
                    string lang = userLang.Split(new char[]  ';' , StringSplitOptions.RemoveEmptyEntries).FirstOrDefault();
                    if (!String.IsNullOrEmpty(lang))
                    
                        Language scLang;
                        // if lang starts with the same letters as are in defaultLangPrefix
                        if (defaultLangPrefix != null && lang.StartsWith(defaultLangPrefix.CultureInfo.TwoLetterISOLanguageName))
                        
                            scLang = defaultLangPrefix;
                        
                        else
                        
                            if (!Language.TryParse(lang, out scLang))
                            
                                continue;
                            
                        
                        // then try to get the language item id from the language or two letter iso code
                        ID scLangId = LanguageManager.GetLanguageItemId(scLang, Sitecore.Context.Database);
                        if (ID.IsNullOrEmpty(scLangId))
                        
                            //sometimes the language found is slightly different than official language item used in SC
                            scLang = LanguageManager.GetLanguage(scLang.CultureInfo.TwoLetterISOLanguageName);
                            scLangId = LanguageManager.GetLanguageItemId(scLang, Sitecore.Context.Database);
                        
                        if (ID.IsNullOrEmpty(scLangId))
                        
                            continue;
                        
                        Item startItem = Sitecore.Context.Database.GetItem(Sitecore.Context.Site.StartPath, scLang);
                        //if you've got a version in this language then use that language
                        if (startItem != null && startItem.Versions.Count > 0)
                        
                            return scLang;
                        
                    
                
                // fallback language from site configuration
                return LanguageManager.GetLanguage(Sitecore.Context.Site.Properties["resolveBrowserFallbackLang"]);
            
        
        return null;
    
    /// <summary>
    /// Determinates if detection is allowed
    /// </summary>
    /// <param name="args"></param>
    /// <returns></returns>
    protected bool IsBrowserLangDetectionAllowed(Sitecore.Pipelines.HttpRequest.HttpRequestArgs args)
    
        // site must be defined
        return Sitecore.Context.Site != null
            // lang cookie is not already set
            && !args.Context.Request.Cookies.AllKeys.Contains(Sitecore.Context.Site.GetCookieKey("lang"))
            // URL is related to homepage
            && args.Context.Request.Url.AbsolutePath == "/"
            // site must have property resolveBrowserLang="true"
            && Sitecore.Context.Site.Properties["resolveBrowserLang"] == "true"
            // user agent is not robot
            && !Sitecore.Analytics.Configuration.AnalyticsSettings.Robots.ExcludeList.ContainsUserAgent(args.Context.Request.UserAgent);
    

客户的请求只针对首页，所以脚本可以扩展。

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更新了"Browser Language Detection is Sitecore" from Mark Stilesmarkstiles.net/blog/2013/4/1/…的链接