C#调用Geocoding API进行地理编码与逆编码

      使用C#调用Geocoding API来将地址转为经纬度，或者将经纬度转变为具体的地址。

      Geocoding API的详细介绍参见：http://developer.baidu.com/map/webservice-geocoding.htm

     地理编码示例：

     网页调用：

 

C#代码实现：

/// <summary>
        /// 地址编码
        /// </summary>
        /// <param name="ak">百度密钥</param>
        /// <param name="address">详细地址</param>
        /// <param name="city">城市</param>
        /// <returns></returns>
        public string GeoEncoding(string ak, string address,string city)
        {
            string json = ",";
            try
            {
                WebClient client = new WebClient();
                client.Encoding = UTF8Encoding.UTF8; 
                string url = String.Format("http://api.map.baidu.com/geocoder/v2/?ak={0}&address={1}&city={2}&output=json", ak, address, city);

                //将返回的json数据转为JSON对象
                JObject jo = ((JObject)JsonConvert.DeserializeObject(client.DownloadString(url)));
                string status = jo["status"].ToString();
                if (status == "0")
                {
                    //正常返回
                    json = jo["result"]["location"]["lat"].ToString() + "," + jo["result"]["location"]["lng"].ToString();
                }
            }
            catch(Exception ex)
            {
                //异常处理
            }
            return json;
        }

 

逆地址编码示例：

网页调用：

 

C#代码实现：

/// <summary>
        /// 逆地址编码
        /// </summary>
        /// <param name="ak">百度密钥</param>
        /// <param name="longitude">经度</param>
        /// <param name="latitude">纬度</param>
        /// <returns></returns>
        public string GeoDecoding(string ak, string longitude, string latitude)
        {
            string json = "";
            try
            {
                WebClient client = new WebClient();
                client.Encoding = UTF8Encoding.UTF8;
                string url = String.Format("http://api.map.baidu.com/geocoder/v2/?ak={0}&location={1},{2}&output=json", ak, longitude, latitude);

                //将返回的json数据转为JSON对象
                JObject jo = ((JObject)JsonConvert.DeserializeObject(client.DownloadString(url)));
                string status = jo["status"].ToString();
                if (status == "0")
                {
                    //正常返回
                    json = jo["result"]["formatted_address"].ToString() ;
                }
            }
            catch (Exception ex)
            {
                //异常处理
            }
            return json;
        }