JSONArray 与List 转换

String k="[\"1\",\"2\",\"3\"]";

    List<String> list1 = new ArrayList<String>();

    list1.add(k);

    list1.add("2");

      list1.add("3");

      JSONArray array =JSONArray.fromObject(list1);

        String jsonstr = array.toString();

      System.out.println(jsonstr);

      array =JSONArray.fromObject(jsonstr);

      List list2 =JSONArray.toList(array);

      for(int i=0;i<list1.size();i++){

      System.out.println(list1.get(i));

      }

      System.out.println(array.size());

-------结果

[["1","2","3"],"2","3"]

["1","2","3"]

2

3

3