JSON-lib的api的使用

List<Object> list = new ArrayList<Object>();

        Map<String,Object> map1  = new HashMap<String,Object>();

        map1.put("name", "黑龙江");

        JSONObject put = new JSONObject();

        put.put("city", new String[]{"哈尔滨","大庆"});

        map1.put("cities", put.toString());

        list.add(map1);

        

        Map<String,Object> t = new HashMap<String,Object>();

        t.put("name","中国");

        t.put("province", JSONArray.fromObject(list).toString());

        JSONObject j = new JSONObject();

        j.putAll(t);

        System.out.println(j.toString());

{

        "name":"中国",

        "province":[

        {

           "name":"黑龙江",

            "cities":{

                "city":["哈尔滨","大庆"]

            }

         },

         {

            "name":"广东",

            "cities":{

                "city":["广州","深圳","珠海"]

            }

        },

        {

            "name":"台湾",

            "cities":{

                "city":["台北","高雄"]

            }

        },

        {

            "name":"新疆",

            "cities":{

                "city":["乌鲁木齐"]

            }

        }

    ]

    }

// 此范例的另外一种写法。没有用List来装集合，而是用JSONArray

   Map<String,Object> map1  = new HashMap<String,Object>();

        map1.put("name", "黑龙江");

        JSONObject put = new JSONObject();

        put.put("city", new String[]{"哈尔滨","大庆"});

        map1.put("cities", put.toString());

        

        Map<String,Object> map2  = new HashMap<String,Object>();

        map2.put("name", "广东");

        JSONObject put2 = new JSONObject();

        put2.put("city", new String[]{"广州","深圳","珠海"});

        map2.put("cities", put.toString());

        

        Map<String,Object> t = new HashMap<String,Object>();

        t.put("name","中国");

        JSONArray array = new JSONArray();

        array.add(map1);

        array.add(map2);

        t.put("province", array.toString());

        JSONObject j = new JSONObject();

        j.putAll(t);

        j.element("description", "这是描述");

        System.out.println(j.toString());

 

能用map来启用key跟value的话，一般都不用再启用一个javabean了。