根据ip获取用户地理位置

各大网站都提供根据ip获取用户地理位置信息，这里以新浪的接口为例子

接口地址为：http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=js&ip=218.18.171.146

代码：

 1         #region 根据ip获取地点
 2         /// 获取Ip归属地
 3         /// </summary>
 4         /// <param name="ip">ip</param>
 5         /// <returns>归属地</returns>
 6         public static string GetIpAddress(string ip)
 7         {
 8             JavaScriptSerializer Jss = new JavaScriptSerializer();
 9             //http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=js&ip=218.18.171.146 调用新浪的接口
10             //var remote_ip_info = {"ret":1,"start":-1,"end":-1,"country":"\u4e2d\u56fd","province":"\u5e7f\u4e1c","city":"\u6df1\u5733","district":"","isp":"","type":"","desc":""};
11             string address = string.Empty;
12             try
13             {
14                 string reText = WebRequestPostOrGet("http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=js&ip="+ip, "");
15                 reText = reText.Split('=')[1].Split(';')[0].Trim();
16                 Dictionary<string, object> DicText = (Dictionary<string, object>)Jss.DeserializeObject(reText);
17                 address = DicText["city"].ToString();
18             }
19             catch { }
20             return address;
21         }
22         #endregion

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