使用json-org包实现POJO和json的转换

        Student student = new Student("2015551404","熊大");
        JSONObject object = new JSONObject(student);
        System.out.println(object.toString(2));

        Student student = new Student("2015551404","熊大");
        Student student1 = new Student("2015551405", "孙嘉宁");
        ArrayList<Student> list = new ArrayList<>();
        list.add(student);
        list.add(student1);
        JSONArray array = new JSONArray(list);
        System.out.println(array.toString(2));