1，js代码，显示IP地址。
复制代码 代码示例:
<script type="text/
javascript">
function dd() {
var str = "<%=GetIP()%>";
alert(str);
}
</script>
<input id="Button2" type="button" value="button" onclick="dd();" />
2，asp.net程序，获取用户IP地址
复制代码 代码示例:
public static string GetIP()
{
string reIp = "";
if (System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"] == null || System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"].ToString().IndexOf("unknown") > -1)
{
reIp = System.Web.HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
}
else if (System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"].ToString().IndexOf(",") > -1)
{
reIp = System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"].Substring(1, System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"].IndexOf(",") - 1);
}
else if (System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"].ToString().IndexOf(";") > -1)
{
reIp = System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"].Substring(1, System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"].IndexOf(":") - 1);
}
else
{
reIp = System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
}
if (reIp.Length > 30)
{
reIp = reIp.Trim().Substring(0, 29);
}
else
{
reIp = reIp.Trim();
}
return reIp;
}
