把json里的值取出来，转回byte数组

Question

我的json是这样的：｛“2”:[-1, -40, -1, -18, 0, 14, 65, 100, 111, 98, 101, 0, 100, 0, 0, 0, 0, 1, -1, -31, 35, 45, 69, 120, 105, 102, 0, 0, 77, 77, 0, 42, 0, 0, 0, 8, 0, 15, 1, 14, 0, 2, 0, 0, 0, 30, 0, 0, 8, -50, 1, 15, 0, 2, 0, 0, 0, 16, 0, 0, 8, -20, 1, 16, 0, 2, 0, 0, 0, 10, 0, 0, 8, -4, 1, 18, 0, 3, 0, 0, 0, 1, 0, 1, 0, 0, 1, 26, 0, 5, 0, 0, 0, 1, 0, 0, 9, 6, 1, 27, 0, 5, 0, 0, 0, 1, 0, 0, 9, 14, 1, 40, 0, 3, 0, 0, 0, 1, 0, 2, 0, 0, 1, 49, 0, 2, 0, 0, 0, 28, 0, 0, 9, 22, 1, 50, 0, 2, 0, 0, 0, 20, 0, 0, 9, 50, 1, 59, 0, 2, 0, 0, 0, 10, 0, 0, 9, 70, 2, 19, 0, 3, 0, 0, 0, 1, 0, 1, 0, 0]｝
怎样可以把json.get("2")转成byte[]
我是把json传到servlet里，再转回json，取出来转不回byte[]
代码是这样的：

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
   {
      // TODO Auto-generated method stub
      System.out.println("5656");
      String data = request.getParameter("data");
      System.out.println("在servlet里的：" + data);

      JSONObject json = net.sf.json.JSONObject.fromObject(data);
      Map<String, byte[]> map = (Map<String, byte[]>)json.toBean(json, Map.class);
      System.out.println("--" + map.get("2"));


      byte[] bytes = map.get("2"); //这里报异常，转不了，json.get("2")也是同样的情况
      System.out.println(bytes[1]);

   }

Answer 1

谢谢大家，我把字节数组转成Base64编码的字符串，传过去再解码，就可以了~