asp.net 获取客户端浏览器访问的IP地址

来源：互联网发布：nginx proxy ssl 编辑：程序博客网时间：2024/05/17 01:55

1、js方法

<!DOCTYPE html><html><head>    <meta charset="UTF-8" />    <title>Document</title>    <script src="http://pv.sohu.com/cityjson?ie=utf-8"></script>     <script type="text/javascript">          document.write('IP地址:' + returnCitySN["cip"] + ', 城市编码:' + returnCitySN["cid"] + ', 地区:' + returnCitySN["cname"]);    </script></head><body> </body></html>

2、后台代码实现

  #region IP地址限制功能 2017-07-18        /// <summary>        ///         /// </summary>        /// <returns></returns>        public bool IsIPValidate()        {            bool flag = false;            string userip = GetLoginIp();            string[] addr = GetAddressByIp(userip);            string addrs = addr[0] + addr[1];            if ("北京".Equals(addr[0]) || "北京".Equals(addr[1]))            {                flag = true;            }            return flag;        }        /// <summary>        /// 获取远程访问用户的Ip地址        /// </summary>        /// <returns>返回Ip地址</returns>        protected string GetLoginIp()        {            string loginip = "";            //Request.ServerVariables[""]--获取服务变量集合             if (Request.ServerVariables["REMOTE_ADDR"] != null) //判断发出请求的远程主机的ip地址是否为空            {                //获取发出请求的远程主机的Ip地址                loginip = Request.ServerVariables["REMOTE_ADDR"].ToString();            }            //判断登记用户是否使用设置代理            else if (Request.ServerVariables["HTTP_VIA"] != null)            {                if (Request.ServerVariables["HTTP_X_FORWARDED_FOR"] != null)                {                    //获取代理的服务器Ip地址                    loginip = Request.ServerVariables["HTTP_X_FORWARDED_FOR"].ToString();                }                else                {                    //获取客户端IP                    loginip = Request.UserHostAddress;                }            }            else            {                //获取客户端IP                loginip = Request.UserHostAddress;            }            return loginip;        }        /// <summary>        /// 根据IP获取省市        /// </summary>        public string[] GetAddressByIp(string ip)        {            string PostUrl = "http://int.dpool.sina.com.cn/iplookup/iplookup.php?ip=" + ip;            string res = GetDataByPost(PostUrl);//该条请求返回的数据为：res=1t115.193.210.0t115.194.201.255t中国t浙江t杭州t电信            string[] arr = getAreaInfoList(res);            return arr;        }        /// <summary>        /// Post请求数据        /// </summary>        /// <param name="url"></param>        /// <returns></returns>        public string GetDataByPost(string url)        {            HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);            string s = "anything";            byte[] requestBytes = System.Text.Encoding.ASCII.GetBytes(s);            req.Method = "POST";            req.ContentType = "application/x-www-form-urlencoded";            req.ContentLength = requestBytes.Length;            Stream requestStream = req.GetRequestStream();            requestStream.Write(requestBytes, 0, requestBytes.Length);            requestStream.Close();            HttpWebResponse res = (HttpWebResponse)req.GetResponse();            StreamReader sr = new StreamReader(res.GetResponseStream(), System.Text.Encoding.Default);            string backstr = sr.ReadToEnd();            sr.Close();            res.Close();            return backstr;        }        /// <summary>        /// 处理所要的数据        /// </summary>        /// <param name="ip"></param>        /// <returns></returns>        public static string[] getAreaInfoList(string ipData)        {            //1t115.193.210.0t115.194.201.255t中国t浙江t杭州t电信            string[] areaArr = new string[10];            string[] newAreaArr = new string[2];            try            {                //取所要的数据，这里只取省市                areaArr = ipData.Split('t');                newAreaArr[0] = areaArr[4];//省                newAreaArr[1] = areaArr[5];//市            }            catch (Exception e)            {            }            return newAreaArr;        }        #endregion

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