java百度api输入经纬度解析地址

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package com.bigdata.std;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.URL;
import java.net.URLConnection;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.lang.StringUtils;

public class BaiduAPIJW
{
    private static String ak = "xxxxxxxxxxxxxxx";//自己申请的，密匙

    public static Map<String, String> testPost(String x, String y)
            throws IOException
    {
        URL url = new URL("http://api.map.baidu.com/geocoder?" + ak + "=" + ak +
                "&callback=renderReverse&location=" + x +
                "," + y + "&output=json");
        URLConnection connection = url.openConnection();

        connection.setDoOutput(true);
        OutputStreamWriter out = new OutputStreamWriter(connection
                .getOutputStream(), "utf-8");

        out.flush();
        out.close();

        InputStream l_urlStream = connection.getInputStream();
        BufferedReader in = new BufferedReader(new InputStreamReader(
                l_urlStream, "UTF-8"));
        StringBuilder sb = new StringBuilder("");
        String res;
        while ((res = in.readLine()) != null)
        {
            //String res;
            sb.append(res.trim());
        }
        String str = sb.toString();
        System.out.println(str);
        Map<String, String> map = null;
        if (StringUtils.isNotEmpty(str))
        {
            int addStart = str.indexOf("formatted_address\":");
            int addEnd = str.indexOf("\",\"business");
            if ((addStart > 0) && (addEnd > 0))
            {
                String address = str.substring(addStart + 20, addEnd);
                map = new HashMap();
                map.put("address", address);
                return map;
            }
        }
        return null;
    }

    public static void main(String[] args)
            throws IOException
    {
        Map<String, String> json = testPost("28.689577", "115.893524");
        System.out.println("address :" + (String)json.get("address"));
    }
}

结果：

{"status":"OK","result":{"location":{"lng":115.893524,"lat":28.689577},"formatted_address":"江西省南昌市东湖区叠山路535号","business":"豫章,滕王阁,大士院","addressComponent":{"city":"南昌市","direction":"附近","distance":"14","district":"东湖区","province":"江西省","street":"叠山路","street_number":"535号"},"cityCode":163}}

address :江西省南昌市东湖区叠山路535号