ASP.NET MVC 最佳化筆記 -SEO

1.網站地圖構建：

    

   /// <summary>   ///  實現XML格式 網站地圖輸出   ///  By:rhythmk.cnblogs.com   /// </summary>    public class SitemapResult : ActionResult    {        public SitemapResult(Sitemap sitemap)        {            this.Sitemap = sitemap;        }        public Sitemap Sitemap { get; private set; }        public override void ExecuteResult(ControllerContext context)        {            context.HttpContext.Response.ContentType = "text/xml";            XmlSerializer serializer = new XmlSerializer(typeof(Sitemap));            serializer.Serialize(context.HttpContext.Response.Output,                                 this.Sitemap);        }    }    /// <summary>    /// 網站地圖實體    ///  By:rhythmk.cnblogs.com    /// </summary>    [XmlRoot(ElementName = "urlset", Namespace = "http://www.sitemaps.org/schemas/sitemap/0.9")]    [Serializable]    public class Sitemap : List<SitemapUrl>    {        [XmlInclude(typeof(SitemapUrl))]        public void Serialize(TextWriter writer)        {            XmlSerializer serializer = new XmlSerializer(typeof(Sitemap));            XmlTextWriter xmlTextWriter = new XmlTextWriter(writer);            serializer.Serialize(xmlTextWriter,                                 this);        }    }    [XmlRoot(ElementName = "url")]    [XmlType(TypeName = "url")]    [Serializable]    public class SitemapUrl    {        private DateTime lastModified;        [XmlElement(ElementName = "loc")]        public string Location { get; set; }        [XmlElement(ElementName = "lastmod")]        public string LastModified        {            get            {                if (DateTime.MinValue.Equals(this.lastModified))                {                    this.lastModified = DateTime.Now;                }                return this.lastModified.ToString("yyyy-MM-dd");            }            set { this.lastModified = DateTime.Parse(value); }        }        [XmlElement(ElementName = "changefreq")]        public ChangeFrequency ChangeFrequency { get; set; }        [XmlElement(ElementName = "priority")]        public double Priority { get; set; }    }    public enum ChangeFrequency    {        always,        hourly,        daily,        weekly,        monthly,        yearly,        never    }

 使用：

        /// <summary>        ///   網站地圖        /// </summary>        /// <param name="pageIndex"> 頁面索引</param>        /// <param name="subjectID"> 科目 </param>        /// <returns></returns>        public ActionResult Index(int subjectID = 0, int pageIndex = 1)        {            int total = 0;            int pageSize=2000;            var list = GetExamList(subjectID, pageIndex, pageSize,ref total);            Sitemap site = new Sitemap();            var time= DateTime.Now.ToLongDateString() ;                        foreach (var p in list)            {                site.Add(new SitemapUrl()                {                    ChangeFrequency = ChangeFrequency.weekly,                    LastModified = time,                    Location = string.Format("http://rhythmk/home/view/{0}?t={1}", p.ExaminationID , p.ExaminationTitle),                    Priority = 0.7                });            }            return new SitemapResult(site);        }

2.判斷是否為搜尋引擎：

 

  /// <summary>        /// 判斷是否為搜尋引擎訪問        /// </summary>        /// <param name="useragent"></param>        /// <returns></returns>        public static bool IsSearchEngine(string useragent)        {            bool engine = false;            if (!string.IsNullOrEmpty(useragent))            {                var SpiderKey = System.Configuration.ConfigurationManager.AppSettings["SpiderKey"].ToString();                // spiderkey=@"Googlebot|Feedfetcher-Google|Baiduspider|Yahoo\s*\!\s*Slurp|YodaoBot|Sosoimagespider|Sosospider|Sogou\s*Web\s*Sprider"                System.Text.RegularExpressions.Regex rx = new System.Text.RegularExpressions.Regex(SpiderKey, RegexOptions.IgnoreCase | RegexOptions.Compiled);                engine = rx.IsMatch(useragent);            }            return engine;        }           public  ActionResult View()           {                      bool engine = IsSearchEngine( this.HttpContext.Request.ServerVariables["Http_User_Agent"]);                         // 判斷是否為搜尋引擎 然後使用不同的試圖呈現資料             if (engine)            {                               return View("SearchView", entity);            }            else            {                return View(entity);            }            }

3. 檢驗是否成功：

   修改瀏覽器   Http_User_Agent   值，以達到類比搜尋引擎爬蟲瀏覽效果。

  以Firefox為例：

   3.1地址欄鍵入：about:config 斷行符號

   3.2 設定：general.useragent.override–>"Baiduspider" 。可以達到類比百度爬蟲效果。

     火符預設:Mozilla/5.0 (Windows; U; Windows NT 6.0; zh-CN) AppleWebKit/525.19 (KHTML, like Gecko) Chrome/0.4.154.29 Safari/525.19

   設定完成後可以通過瀏覽http://www.docin.com/p-259119935.html 此網址 於其他未設定的瀏覽器比較 瀏覽頁面效果。