mongoDB（4）多欄位查詢

    @Override    public OrderCFeeCode selectByPrimaryKey(String feeCode) {                Criteria criteria = new Criteria();          criteria.orOperator(                            Criteria.where("feeCode").is(feeCode),                            Criteria.where("refFeeAct").is(feeCode),                            Criteria.where("refFeeRed").is(feeCode),                            Criteria.where("refFeeRev").is(feeCode)                );         if(!this.exists(criteria)){            init();        }                List<OrderCFeeCode> lists = this.find(criteria);                if(lists!=null && !lists.isEmpty()){            return lists.get(0);        }else{            return null;        }            }    @Override    public int deleteByPrimaryKey(String feeCode) {        this.orderCFeeCodeMapper.deleteByPrimaryKey(feeCode);                HashMap<String,Object> map = new HashMap<>();        map.put("feeCode", feeCode); //擷取資料表中的【主鍵】                return  this.delete(map);    }