mybatis返回java.util.HashMap

    <select id="getHashMaps" resultType="java.util.HashMap">
    select * from USER_INFO
      </select>
    
    <select id="getHashMapOne" resultType="java.util.HashMap">
    select * from USER_INFO where USER_ID=#{userId}
      </select>

            List<Map<String, Object>> datas= sqlSession.selectList("getHashMaps");            
            System.out.println(datas.size());
            
            datas= sqlSession.selectList("getHashMapOne",7);            
            System.out.println(datas.size());