java根据地址获取百度API经纬度

java根据地址获取百度API经纬度（详细文档）

 public void getLarLng(String address) throws Exception {

         String ak = "vZ5wAkH9uc6mCnrhtYWey2fBHBmU9Rh5";

         String addressUrl = "http://api.map.baidu.com/geocoder/v2/?address=" + address + "&output=json&ak=" + ak + "&callback=showLocation";

         URL url = new URL(addressUrl);

         InputStream inputStream = url.openStream();

         String string = IOUtils.toString(inputStream);

         // showLocation&&showLocation({"status":0,"result":{"location":{"lng":121.4423987575458,"lat":30.939981749234133},"precise":1,"confidence":80,"level":"道路"}})

         System.out.println(string);

         int len = string.length();

         String substring = string.substring(27, len - 1);

         // {"status":0,"result":{"location":{"lng":121.4423987575458,"lat":30.939981749234133},"precise":1,"confidence":80,"level":"道路"}}
         System.out.println(substring);

         JSONObject jsonObject = JSONObject.parseObject(substring);

         String status = jsonObject.getString("status");

         Double lng = 0.0;

         Double lat = 0.0;

         if (status.equals("0")){

             lng = jsonObject.getJSONObject("result").getJSONObject("location").getDouble("lng");

             lat = jsonObject.getJSONObject("result").getJSONObject("location").getDouble("lat");
         }

         if (Double.isNaN(lng)){
             System.out.println(0);
         }
         BigDecimal bd = new BigDecimal(lng);
         // 保留小数点后六位 并做四舍五入
         double v = bd.setScale(6, BigDecimal.ROUND_HALF_UP).doubleValue();

         System.out.println(v);
         System.out.println(lat);
     }