1、aspx页面，asp.net项目的页面
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="ip.aspx.cs" Inherits="MvcAppTest.ip" %>
<script language="c#" runat="server">
/// 获取客户端IP地址
/// </summary>
/// <returns></returns>
public static string GetIPAddress() { string userIP = "未获取用户IP"; try { if (System.Web.HttpContext.Current == null
|| System.Web.HttpContext.Current.Request == null
|| System.Web.HttpContext.Current.Request.ServerVariables == null) return ""; string CustomerIP = ""; //CDN加速后取到的IP
CustomerIP = System.Web.HttpContext.Current.Request.Headers["Cdn-Src-Ip"]; if (!string.IsNullOrEmpty(CustomerIP)) { return CustomerIP; } CustomerIP = System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"]; if (!String.IsNullOrEmpty(CustomerIP)) return CustomerIP; if (System.Web.HttpContext.Current.Request.ServerVariables["HTTP_VIA"] != null) { CustomerIP = System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"]; if (CustomerIP == null) CustomerIP = System.Web.HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"]; } else { CustomerIP = System.Web.HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"]; } if (string.Compare(CustomerIP, "unknown", true) == 0) return System.Web.HttpContext.Current.Request.UserHostAddress; return CustomerIP; } catch { } return userIP; } </script>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<%Response.Write(GetIPAddress()); %>
</div>
</form>
</body>
</html>