asp.net根据ip获得城市地址

asp.net根据ip获得城市地址

Solution 1：

#region 通过IP得到IP所在地省市   ///<summary>       /// 通过IP得到IP所在地省市（Porschev）      ///</summary>       ///<param name="ip">Ip地址</param>     ///<returns></returns>   protected string GetAdrByIp(string ip)   {         try            {                    string url = "http://www.ip138.com/ips1388.asp?ip=" + ip + "&action=2";                  string regStr = "(?<=<ul class=\\\"ul1\\\"><li>.*：).*(?=\\s.*</li><li>)";               string html = GetHtml(url);                 //得到网页源码                 Regex reg = new Regex(regStr, RegexOptions.None);                Match ma = reg.Match(html);                       return    ma.Value.Substring(ma.Value.IndexOf("省") + 1).Trim();               }             catch                {                    return "";                 }     }   #endregion #region 获取HTML源码信息  ///<summary>    /// 获取HTML源码信息(Porschev)   ///</summary>    ///<param name="url">获取地址</param>       ///<returns>HTML源码</returns>    protected string GetHtml(string url)  {                  string _value = "";                 HttpWebRequest req;               HttpWebResponse res;              Stream ReceiveStream;               StreamReader sr;                 req = (HttpWebRequest)WebRequest.Create(url);            req.Method = "GET";           req.KeepAlive = false;             req.Referer = url;               req.UserAgent = "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0)";              res = req.GetResponse() as HttpWebResponse;            ReceiveStream = res.GetResponseStream();               sr = new StreamReader(ReceiveStream, Encoding.GetEncoding("GB2312"));        _value = HttpUtility.UrlDecode(sr.ReadToEnd());          sr.Close();           ReceiveStream.Close();            res.Close();           return _value;            }   #endregion

Tips 1：

/// <summary>     /// 获取用户ip地址,避免ip代理   /// </summary>    /// <returns>用户ip地址</returns>    public string GetIp()    {                    string result = String.Empty;                    result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];            if (string.IsNullOrEmpty(result))                  {                                result = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];                  }                          if (string.IsNullOrEmpty(result))                   {                   result = HttpContext.Current.Request.UserHostAddress;               }                                  return result;                                              }