关于json字符串转换

阿里的json包
//对象转json字符串，
String wantedInfo = JSON.toJSONString(wantedInfoDao.selectByPrimaryKey(record.getKid()));
//json字符串转对象，
announcementInfoPojo announcementInfoPojo = JSONObject.parseObject(wantedInfo, announcementInfoPojo.class);