fastJSON List对象 Map对象与JSON对象的互转

 List<SysUser> suList = new ArrayList<>();
        Map<String,Object> suMap = new HashMap<>();
        for(int i = 0 ; i<3; i++){
            SysUser su = new SysUser();
            su.setId(1);
            su.setRoleId(2);
            su.setUserPhone("phone"+i);
            suList.add(su);
        }
        //Map对象转成JSON对象
        suMap.put("suList",suList);
        JSONObject ms = JSONObject.parseObject(JSONObject.toJSONString(suMap));
        JSONArray suListMap = ms.getJSONArray("suList");
        String suListMapStr = suListMap.toString();
        System.out.println("Map对象转换后的字符串="+suListMapStr);

        //List对象转成JSON对象
        JSONArray js = JSONArray.parseArray(JSONObject.toJSONString(suList));
        String s = js.toJSONString();
        System.out.println("List对象转换后的字符串="+s);

//        //JSONObject 转化成List对象
        ArrayList<SysUser> suArr = JSON.parseObject(s,new TypeReference<ArrayList<SysUser>>(){});
        System.out.println("JSONObject 转化成List对象"+suArr.size());