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
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。
