NUll 不是 []

@Override
 public
Object addressList(Integer userId,String name,BaseParam baseParam) {
       /*userId=( Integer ) GetSubject.getUserId ( );*/
    List<MarketAddress> marketAddressList=new ArrayList<> (  );//[]  不让它为null;

    MarketAddressExample marketAddressExample = new MarketAddressExample ( );
    if ( userId != null ) {
        marketAddressExample.createCriteria ( ).andAddressDetailEqualTo ( userId );//精准匹配*/
        marketAddressList=marketAddressMapper.selectByExample ( marketAddressExample );
        AddressVo AddressVo=new AddressVo ( );
        AddressVo.setLimit ( marketAddressList.size ( ) );
        AddressVo.setList ( marketAddressList );
        AddressVo.setPage ( 1 );
        AddressVo.setPages ( 1 );
        AddressVo.setTotal ( marketAddressList.size ( ) );
        return AddressVo;

    }
    BaseVo2 vo =  new BaseVo2 ( );
    vo.setTotal ( 0L );
    vo.setPages (1);
    vo.setLimit (0);
    vo.setPage (1);
    vo.setList (marketAddressList);
    return vo;
    }

{
    "data": {
        "total": 0,
        "pages": 1,
        "limit": 0,
        "page": 1,
        "list": []
    },
    "errmsg": "成功",
    "errno": 0
}

2022-01-11 21:20:00.674  INFO 15608 --- [nio-8083-exec-1] a.s.s.m.AbstractValidatingSessionManager : Enabling session validation scheduler...

r : Enabling session validation scheduler…