百度地图API-根据地址解析坐标,根据坐标解析地址

一.根据地址解析坐标

1.官方文档地址

 http://lbsyun.baidu.com/index.php?title=webapi/guide/webservice-geocoding

2.c#封装方法 

        /// <summary> 

        /// 根据地址解析经纬度 

        /// </summary> 

        /// <param name="address">地址</param> 

        /// <param name="city">城市</param>

        /// <returns></returns> 

  public static string GetMapLatOrLong(string address, string city)

         {

            string posturl = "http://api.map.baidu.com/geocoder?address=" + address + "&output=json&key=自己的key&city=" + city + ""; 

            string postret = HttpGet(posturl);           

            //返回json数据：{ "status":"OK","result":{ "location":{ "lng":经度,"lat":纬度 },"precise":1,"confidence":75,"level":"\u5546\u52a1\u5927\u53a6"} } 

            string citylist = "";

                   JsonData jd = JsonMapper.ToObject(postret); 

            if (jd["status"].ToString() == "OK") 

            {                

                citylist = "{\"lng\":\""+ jd["result"]["location"]["lng"].ToString() 

                    + "\",\"lat\":\""+ jd["result"]["location"]["lat"].ToString() 

                    + "\",\"level\":\""+ jd["result"]["level"].ToString() + "\"}"; 

            }

            else

            {

                citylist = "{\"lng\":\"\",\"lat\":\"\",\"level\":\"\"}"; 

            }

            return citylist;

        } 

3.调用 

  string retcity= GetMapLatOrLong("地址","城市");

   Response.Write(retcity);   

二.根据坐标解析地址 

1.官方文档地址 

http://lbsyun.baidu.com/index.php?title=webapi/guide/webservice-geocoding-abroad

 2.c#封装方法 

        /// <summary>

        /// 按照定位的坐标，获取省市县

        /// </summary>

        /// <param name="lat"></param>

        /// <param name="lng"></param>

        /// <returns></returns>

        public static string DecodeMapPostion(string lat, string lng)

        {

            string posturl = "http://api.map.baidu.com/geocoder/v2/?output=json&ak=自己的key&location=" + lat + "," + lng;

            string postret =HttpGet(posturl);

            string citylist = "";

            JsonData jd = JsonMapper.ToObject(postret);

            if (jd["status"].ToString() == "0")

            {

                //具体地址

                string jtaddrs = jd["result"]["formatted_address"].ToString();

                string bussinsaddrs = jd["result"]["sematic_description"].ToString();

                citylist = "{\"province\":\"" + jd["result"]["addressComponent"]["province"].ToString() + "\",\"city\":\""

                    + jd["result"]["addressComponent"]["city"].ToString() +

                    "\",\"area\":\"" + jd["result"]["addressComponent"]["district"].ToString() + "\",\"address\":\""

                    + HtmlEncode(jtaddrs) + "\"}";

            }

            else

            {

                citylist = "{\"province\":\"\",\"city\":\"\",\"area\":\"\"}";

            }

            return citylist;

        } 

3.调用  

  string retcity= DecodeMapPostion(lat,lng); 

   Response.Write(retcity);