根据经纬度坐标定位用户所在城市

package com.henu.controller;

import java.net.URL;

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;

public class GetLocation {
    public static void main(String[] args) {
        // lat 39.97646
        // log 116.3039
        String add = getAdd("113.595688", "34.798947");
        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] + "
市：" + arr[1] + "
区：" + arr[2]);
        String admCode = j_2.getString("admCode");
        System.out.println(admCode);
    }

    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 + "
";
            }
            in.close();
        } catch (Exception e) {
            System.out.println("error in wapaction,and e is " + e.getMessage());
        }
        System.out.println(res);
        return res;
    }

}

运行结果：

{"queryLocation":[34.798947,113.595688],"addrList":[{"type":"poi","status":1,"name":"阿登饭庄","id":"ANB017316EI9","admCode":"410102","admName":"河南省,郑州市,中原区,","addr":"","nearestPoint":[113.59577,34.79889],"distance":10.296}]}

省：河南省
市：郑州市
区：中原区
410102