Mybatis的resultMap返回map

<resultMap type="Map" id="bankMaintainMap">
      <result column="bank_name" property="bankName"/>
      <result column="maintain_time_interval" property="maintainTimeInterval"/>
  </resultMap>
  <select id="getMaintainNotice" parameterType="Map" resultMap="bankMaintainMap">
      select 
          bank_name,
          maintain_time_interval
      from
          fp_channel_prd_bank
      where 
          channel_prd_id=7 
      and     
          maintain_time_interval
  </select>