好多情况我们需要把一个地方的经纬度存到数据库，也就是根据地址通过GoogleMap查询出来其对应的经纬度。

<!-- lang: java -->

public static double[] getCoordinate(String addr) {double[] latLng = new double[2];String address = null;try {address = java.net.URLEncoder.encode(addr,"utf-8");} catch (UnsupportedEncodingException e) {e.printStackTrace();}String url = "http://maps.googleapis.com/maps/api/geocode/json?address=" + addr;URL googleMapURL = null;HttpURLConnection httpConn = null;//进行转码try {googleMapURL = new URL(url);} catch (MalformedURLException e) {e.printStackTrace();}try {httpConn = (HttpURLConnection)googleMapURL.openConnection(new Proxy(Proxy.Type.SOCKS,new InetSocketAddress("127.0.0.1",1080))); //这里是通过代理访问，根据自己的需要进行修改httpConn.setRequestMethod("GET"); //设置请求方法googleMapURL.openConnection().setDoOutput(true);//返回此 URLConnection 的 doOutput 标志的值if (httpConn != null) {InputStreamReader insr = new InputStreamReader(httpConn.getInputStream(),"utf-8");BufferedReader br = new BufferedReader(insr);StringBuffer sb = new StringBuffer();String temp;while ((temp = br.readLine()) != null) {temp = temp.trim();if (temp !=null && temp.length()>0) {sb.append(temp);}}br.close();insr.close();JSONObject llInfo = new JSONObject(sb.toString());//引入org.json jar包String status = llInfo.getString("status");if ("OK".equals(status)) {JSONArray results = llInfo.getJSONArray("results");for (int i = 0; i<results.length(); i++) {JSONObject llDetails = results.getJSONObject(i);JSONObject loc= llDetails.getJSONObject("geometry").getJSONObject("location");double y = loc.getDouble("lat");double x = loc.getDouble("lng");latLng[0] = x;latLng[1] = y;}}}} catch (Exception e) {e.printStackTrace();System.out.println("经纬度解析失败");}return latLng;
}