asp.net 获取客户端浏览器访问的IP地址的实例代码
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2022-05-26 09:39:13
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
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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。