java获取远程服务器端的数据

//方法

protected String getJsonString(String urlPath) throws Exception {  

        URL url = new URL(urlPath);  

        HttpURLConnection connection = (HttpURLConnection) url.openConnection();  

        connection.connect();  

        InputStream inputStream = connection.getInputStream();  

        //对应的字符编码转换  

        Reader reader = new InputStreamReader(inputStream, "UTF-8");  

        BufferedReader bufferedReader = new BufferedReader(reader);  

        String str = null;  

        StringBuffer sb = new StringBuffer();  

        while ((str = bufferedReader.readLine()) != null) {  

            sb.append(str);  

        }  

        reader.close();  

        connection.disconnect();  

        return sb.toString();  

    } 

//调用代码

   public void jsonToObj(String jsonStr) throws Exception {  

        Page page = new Page();  

        JSONObject jsonObject = new JSONObject(jsonStr);  

        String fatherName = jsonObject.getString("FatherName");  

        JSONArray childs= jsonObject.getJSONArray("Childs");  

        int length = childs.length();  

        for (int i = 0; i < length; i++) {  

            jsonObject = items.getJSONObject(i);  

            String childName = jsonObject.getString("Name");  

        }  

    }