本文介绍了asp.net 获取客户端浏览器访问的IP地址的实例代码,分享给大家,自己也留个笔记
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