DBObject listItem = new BasicDBObject("scores", new BasicDBObject("type","quiz").append("score",99));DBObject updateQuery = new BasicDBObject("$push", listItem);myCol.update(findQuery, updateQuery);
DBObject listItem = new BasicDBObject("scores", new BasicDBObject("type","quiz").append("score",99));DBObject updateQuery = new BasicDBObject("$push", listItem);myCol.update(findQuery, updateQuery);名师互学网 版权所有 (c)2021-2022 ICP备案号：晋ICP备2021003244-6号
