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  • 【ASP.NET 进阶】根据IP地址返回对应位置信息

    其实就是使用了百度的IP库的功能接口,然后处理下就行了,效果图如下:

    准备工作:

    1.注册成为开度开发者,创建应用获得百度API调用的AK秘钥,百度开发中心地址:http://developer.baidu.com/

    2.API 地址: http://developer.baidu.com/map/index.php?title=webapi/ip-api#.E4.BD.BF.E7.94.A8.E6.96.B9.E6.B3.95

    3.准备开发咯,步骤如下:

    (1)获取客户端IP

            /// <summary>获取客户端IP地址(无视代理)</summary>
            /// <returns>若失败则返回回送地址</returns>
            public static string GetHostAddress()
            {
                string userHostAddress = HttpContext.Current.Request.UserHostAddress;
    
                if (string.IsNullOrEmpty(userHostAddress))
                {
                    userHostAddress = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
                }
    
                //最后判断获取是否成功,并检查IP地址的格式(检查其格式非常重要)
                if (!string.IsNullOrEmpty(userHostAddress) && IsIP(userHostAddress))
                {
                    return userHostAddress;
                }
                return "127.0.0.1";
            }
    
            /// <summary>
            /// 检查IP地址格式
            /// </summary>
            /// <param name="ip"></param>
            /// <returns></returns>
            public static bool IsIP(string ip)
            {
                return System.Text.RegularExpressions.Regex.IsMatch(ip, @"^((2[0-4]d|25[0-5]|[01]?dd?).){3}(2[0-4]d|25[0-5]|[01]?dd?)$");
            

    (2)获取编码服务地址

            private const string THE_KEY = "***************"; //你的AK密钥
            /// <summary>返回UTF-8编码服务地址</summary>
            /// <returns>服务地址</returns>
            public string GetPostUrl(string theIP)
            {
                string postUrl = "http://api.map.baidu.com/location/ip?ak=" + THE_KEY + "&ip=" + theIP + "&coor=bd09ll";
                return postUrl;
            }

    (3)通过服务地址,得到地址解析结果

            /// <summary> 返回结果(地址解析的结果) </summary>
            public static string GetInfoByUrl(string url)
            {
                //调用时只需要把拼成的URL传给该函数即可。判断返回值即可
                string strRet = null;
    
                if (url == null || url.Trim().ToString() == "")
                {
                    return strRet;
                }
                string targeturl = url.Trim().ToString();
                try
                {
                    HttpWebRequest hr = (HttpWebRequest)WebRequest.Create(targeturl);
                    hr.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)";
                    hr.Method = "GET";
                    hr.Timeout = 30 * 60 * 1000;
                    WebResponse hs = hr.GetResponse();
                    Stream sr = hs.GetResponseStream();
                    StreamReader ser = new StreamReader(sr, Encoding.Default);
                    strRet = ser.ReadToEnd();
                }
                catch (Exception ex)
                {
                    strRet = null;
                }
                return strRet;
            }

    (4)最后简单的调用上面的方法,然后转换下字符串中的转义字符

                    string theIP = YMethod.GetHostAddress();
                    string msg = YMethod.GetInfoByUrl(GetPostUrl(theIP));
                    msg = System.Text.RegularExpressions.Regex.Unescape(msg);
                    Response.Write(msg);
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  • 原文地址:https://www.cnblogs.com/yc-755909659/p/5083586.html
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