java中根据实际地址获取百度地图的经纬度

这里需要保证传递过来的地址是实际存在的地址；最好单独写个方法提前验证下

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;

/**
 * 获取经纬度
 * 密钥:这里的密钥是在baidu的后台申请的服务端的key
 * @author only-dream
 */
public class GetLatAndLngByBaidu {
    /**
     * @param addr
     *            查询的地址
     * @return
     * @throws IOException
     */
    public Object[] getCoordinate(String addr) throws IOException {
        String lng = null;// 经度
        String lat = null;// 纬度
        String address = null;
        try {
            address = java.net.URLEncoder.encode(addr, "UTF-8"); } catch (UnsupportedEncodingException e1) { e1.printStackTrace(); } String key = "你的密钥"; String url = String.format("http://api.map.baidu.com/geocoder?address=%s&output=json&key=%s", address, key); URL myURL = null; URLConnection httpsConn = null; try { myURL = new URL(url); } catch (MalformedURLException e) { e.printStackTrace(); } InputStreamReader insr = null; BufferedReader br = null; try { httpsConn = (URLConnection) myURL.openConnection();// 不使用代理 if (httpsConn != null) { insr = new InputStreamReader(httpsConn.getInputStream(), "UTF-8"); br = new BufferedReader(insr); String data = null; int count = 1; while ((data = br.readLine()) != null && (!data.equals("INVALID_PARAMETERS")) ) { if (count == 5) { lng = (String) data.subSequence(data.indexOf(":") + 1, data.indexOf(","));// 经度 count++; } else if (count == 6) { lat = data.substring(data.indexOf(":") + 1);// 纬度 count++; } else { count++; } } } } catch (IOException e) { e.printStackTrace(); } finally { if (insr != null) { insr.close(); } if (br != null) { br.close(); } } return new Object[] { lng, lat }; } public static void main(String[] args) throws IOException { GetLatAndLngByBaidu getLatAndLngByBaidu = new GetLatAndLngByBaidu(); Object[] o = getLatAndLngByBaidu.getCoordinate("河北省衡水市桃城区赵家圈镇衡海防爆电器有限公司"); System.out.println(o[0]);// 经度 System.out.println(o[1]);// 纬度  } }