hibernate中的inverse理解

最新推荐文章于 2018-09-26 22:13:30 发布

最新推荐文章于 2018-09-26 22:13:30 发布 · 110 阅读

文章标签：

#Hibernate #SQL

本文记录了解决Hibernate框架中多对多关联映射时出现的问题，特别是关于inverse属性的理解与正确使用，通过调整inverse属性成功修正了数据插入过程中的错误。

最开始一直没有理解inverse的概念，经过这次多对多关联一直错的经历终于明白了哈


Hibernate: select group_.gid, group_.name as name0_ from kaixindianming.group group_ where group_.gid=?
Hibernate: select group_.gid, group_.name as name0_ from kaixindianming.group group_ where group_.gid=?
Hibernate: select group_.gid, group_.name as name0_ from kaixindianming.group group_ where group_.gid=?
Hibernate: select group_.gid, group_.name as name0_ from kaixindianming.group group_ where group_.gid=?
Hibernate: insert into kaixindianming.member (name, id) values (?, ?)
Hibernate: insert into kaixindianming.group (name, gid) values (?, ?)
Hibernate: insert into kaixindianming.group (name, gid) values (?, ?)
Hibernate: insert into kaixindianming.group (name, gid) values (?, ?)
Hibernate: insert into kaixindianming.group (name, gid) values (?, ?)
Hibernate: insert into group_user (id, gid) values (?, ?)
Hibernate: insert into group_user (id, gid) values (?, ?)
Hibernate: insert into group_user (id, gid) values (?, ?)
Hibernate: insert into group_user (id, gid) values (?, ?)

这是错误时的sql语句，仔细研究发现Hibernate: insert into group_user (id, gid) values (?, ?)中的id和gid写反了，加上inverse=“TRUE”问题解决了哈哈