本文介紹了asp.net 獲取客戶端瀏覽器訪問的IP地址的實例代碼，分享給大家，自己也留個筆記
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"] + ', 城市編碼:' + returnCitySN["cid"] + ', 地區:' + returnCitySN["cname"]); </script> </head> <body> </body> </html> 2、后臺代碼實現
#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> /// 獲取遠程訪問用戶的Ip地址 /// </summary> /// <returns>返回Ip地址</returns> protected string GetLoginIp() { string loginip = ""; //Request.ServerVariables[""]--獲取服務變量集合 if (Request.ServerVariables["REMOTE_ADDR"] != null) //判斷發出請求的遠程主機的ip地址是否為空 { //獲取發出請求的遠程主機的Ip地址 loginip = Request.ServerVariables["REMOTE_ADDR"].ToString(); } //判斷登記用戶是否使用設置代理 else if (Request.ServerVariables["HTTP_VIA"] != null) { if (Request.ServerVariables["HTTP_X_FORWARDED_FOR"] != null) { //獲取代理的服務器Ip地址 loginip = Request.ServerVariables["HTTP_X_FORWARDED_FOR"].ToString(); } else { //獲取客戶端IP loginip = Request.UserHostAddress; } } else { //獲取客戶端IP loginip = Request.UserHostAddress; } return loginip; } /// <summary> /// 根據IP獲取省市 /// </summary> public string[] GetAddressByIp(string ip) { string PostUrl = "http://int.dpool.sina.com.cn/iplookup/iplookup.php?ip=" + ip; string res = GetDataByPost(PostUrl);//該條請求返回的數據為：res=1t115.193.210.0t115.194.201.255t中國t浙江t杭州t電信 string[] arr = getAreaInfoList(res); return arr; } /// <summary> /// Post請求數據 /// </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> /// 處理所要的數據 /// </summary> /// <param name="ip"></param> /// <returns></returns> public static string[] getAreaInfoList(string ipData) { //1t115.193.210.0t115.194.201.255t中國t浙江t杭州t電信 string[] areaArr = new string[10]; string[] newAreaArr = new string[2]; try { //取所要的數據，這里只取省市 areaArr = ipData.Split('t'); newAreaArr[0] = areaArr[4];//省 newAreaArr[1] = areaArr[5];//市 } catch (Exception e) { } return newAreaArr; } #endregion 以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持VeVb武林網。
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