java根据经纬度获取地址

public class GetLocation {  

    public static void main(String[] args) {
        // lat 39.97646
        //log 116.3039
        String add = getAdd("116.3039", "39.97646");
        JSONObject jsonObject = JSONObject.fromObject(add);
        JSONArray jsonArray = JSONArray.fromObject(jsonObject.getString("addrList"));
        JSONObject j_2 = JSONObject.fromObject(jsonArray.get(0));
        String allAdd = j_2.getString("admName");
        String arr[] = allAdd.split(",");
        System.out.println("省："+arr[0]+"\n市："+arr[1]+"\n区："+arr[2]);
    }  

    public static String getAdd(String log, String lat ){
        //lat 小  log  大
        //参数解释: 纬度,经度 type 001 (100代表道路，010代表POI，001代表门址，111可以同时显示前三项)
        String urlString = "http://gc.ditu.aliyun.com/regeocoding?l="+lat+","+log+"&type=010";
        String res = "";
        try {
            URL url = new URL(urlString);
            java.net.HttpURLConnection conn = (java.net.HttpURLConnection)url.openConnection();
            conn.setDoOutput(true);
            conn.setRequestMethod("POST");
            java.io.BufferedReader in = new java.io.BufferedReader(new java.io.InputStreamReader(conn.getInputStream(),"UTF-8"));
            String line;
           while ((line = in.readLine()) != null) {
               res += line+"\n";
         }
            in.close();
        } catch (Exception e) {
            System.out.println("error in wapaction,and e is " + e.getMessage());
        }
        System.out.println(res);
        return res;
    }  

}