根据名称获取经纬度

 public static string[] GetValue(Sheet_Excel model)
        {
            MessageModel result = new MessageModel();
            string[] arrys = new string[] { };
            try
            {
                string ak = "BfH08PCAsZ8SfbiXXEXRkSzn4MA00Mdk";
                // string ak = "r8fiyxWjDHfFP0AUztl4avxqsocvlXuZ";11                 var _city = model.City;
                var address = model.Address;
                //address = address.Replace("#", "");

                var urlName = $"{address}";18 
                //pois 是否搜索周边 0或1
                //string Url = @"http://api.map.baidu.com/geocoding/v3/?address=" + urlName + "&output=json&ak=" + ak + "";
                string Url = $"http://api.map.baidu.com/geocoding/v3/?address={urlName}&output=json&ak={ak}";
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);
                request.KeepAlive = false;
                request.Method = "GET";
                request.ContentType = "application/json";
                using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
                {
                    using (Stream myResponseStream = response.GetResponseStream())
                    {
                        // StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));
                        using (StreamReader myStreamReader = new StreamReader(myResponseStream))
                        {
                            string responseString = myStreamReader.ReadToEnd();
                            var jo = JsonConvert.DeserializeObject<JObject>(responseString);
                            string lat = "", lng = "";
                            if (string.Equals(jo["status"].ToString(), "0") && jo["result"].ToString() != "[]")
                            {
                                lat = jo["result"]["location"]["lat"].ToString();
                                lng = jo["result"]["location"]["lng"].ToString();
                            }

                            arrys = new string[] { lng, lat };
                        }
                    }
                }
                result.response = arrys;
            }
            catch (Exception ex) { result.msg = ex.ToString(); }

            Thread.Sleep(200);

            return arrys;
        }