<bag name="reply" lazy="false" cascade="all">
      <key column="Topic_Id" not-null = "true"></key>
       <one-to-many class="Bean.Reply" />
</bag><many-to-one name="topic" column="Topic_Id" class="Bean.Topic" insert="false" update="false" lazy="false"/>从many端删除数据出错``deleted object would be re-saved by cascade (remove deleted object from associations)如果将many端中的lazy="false"去掉```两端删除都正确``但浏览many端时错误 
could not initialize proxy - no Session!!谢谢