JAVA json listmap互轉

	public static void main(String[] args) throws Exception {
		Map<String,String> param = new HashMap<>();
		List<Object> list =new ArrayList<>();
		param.put("a", "1");
		param.put("b", "2");
		list.add(param);
		Map<String,String> param2 = new HashMap<>();
		param2.put("a2", "1");
		param2.put("b2", "2");
		list.add(param2);
		//listmap 轉json字符串
		String jsonStr = JSONObject.toJSONString(list);
		System.out.println(jsonStr);
		//json串轉listmap
		List<Map> listjmap  = (List<Map>) JSONArray.parse(jsonStr);
		System.out.println(listjmap);
	}