首先，要在建表SQL中加入对级联删除的支持
CREATE TABLE `voteitem` (
`id` varchar(50) NOT NULL default '',
`title` varchar(50) default NULL,
`votenum` varchar(50) default NULL,
`vote_id` varchar(50) NOT NULL,
PRIMARY KEY (`id`),
KEY `vote_id` (`vote_id`),
CONSTRAINT `voteitem_ibfk_1` FOREIGN KEY (`vote_id`) REFERENCES `vote` (`id`)
ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=gb2312 ROW_FORMAT=COMPRESSED;
其次，在hibernate mapping文件中设置cascade
<
set
name
="voteitems"
cascade
="delete"
order-by
="title asc"
inverse
="true"
>
<
key
column
="vote_id"
></
key
>
<
one-to-many
class
="Voteitems"
/>
</
set
>
