获取用户IP 查找所在城市

一、获取IP常用方法

public class BaseAPIController : ApiController
    {
        /// <summary> 获取客户端访问IP
        /// </summary>
        protected string CurrentUserIP
        {
            get
            {
                string realRemoteIP = "";
                if (System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"] != null)
                {
                    realRemoteIP = System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"].Split(',')[0];
                }
                if (string.IsNullOrEmpty(realRemoteIP))
                {
                    realRemoteIP = System.Web.HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
                }
                if (string.IsNullOrEmpty(realRemoteIP))
                {
                    realRemoteIP = System.Web.HttpContext.Current.Request.UserHostAddress;
                }
                return realRemoteIP;
            }
        }
    }

1、返回需要的参数类 position

[Serializable]
    public class Position
    {
        public string address { get; set; }
        public Content content { get; set; }
        public int status { get; set; }
    }

    public class Content
    {
        public string address { get; set; }
        public Address_detail address_detail { get; set; }
        public Point point { get; set; }
    }

    public class Address_detail
    { 
        public string city { get; set; }
        public int city_code { get; set; }
        public string district { get; set; }
        public string province { get; set; }
        public string street { get; set; }
        public string street_number { get; set; }
    }
    public class Point
    {
        public string x { set; get; }
        public string y { set; get; }
    }

2、调取接口接受返回数值

WebClient wc = new WebClient();
                string jsonStr = wc.DownloadString("http://api.map.baidu.com/location/ip?ak=8aa60008a5478bc272e4cb098567a382&ip=" + Common.Common.GetUserIp() + "");
                Position p = new Position();
                try
                {
                    JavaScriptSerializer jss = new JavaScriptSerializer();
                    p = (Position)jss.Deserialize(jsonStr, typeof(Position));
                }
                catch (Exception e)
                {
                    ViewBag.ID = 3270;
                    ViewBag.Name = "北京";
                }
                if (p.status != 0 || p.content.address_detail.city == "")//出错
                {
                    ViewBag.ID = 3270;
                    ViewBag.Name = "北京";
                }
                else
                {
                    string cityName = p.content.address_detail.city;
                    int cityIndex = Bu.AreaBLL.GetCityIndexByName(cityName,2);
                    if (cityIndex == 0)//数据库没有该城市
                    {
                        ViewBag.ID = 3270;
                        ViewBag.Name = "北京";
                    }
                    else
                    {
                        ViewBag.ID = cityIndex;
                        ViewBag.Name = p.content.address_detail.city.Replace("市", "");
                    }
                }