hibernate多对多关联和spring hibernatetemplate不起作用
我正在使用Spring HibernateTemplate、OpenSessionInViewFilter(实际上我扩展了这个类并创建了自己的类以切换到FLUSH.AUTO模式)和Mysql来实现hibernate多对多关联。但是,当我保存对象时,不会插入相应的多对多表的值。有人可以帮助我吗?谢谢。
映射 xml
<hibernate-mapping>
<class name="com.intelli.epub.domain.Content" table="CONTENT">
<id name="id" type="java.lang.Long">
<column name="ID" />
<generator class="native" />
</id>
<property name="title" type="java.lang.String">
<column name="TITLE" />
</property>
<property name="text" type="java.lang.String">
<column name="TEXT" />
</property>
<many-to-one name="writer" class="com.intelli.epub.domain.User" fetch="join">
<column name="WRITER" />
</many-to-one>
<property name="createdDate" type="java.util.Date">
<column name="CREATEDDATE" />
</property>
<set name="menus" table="MENU_CONTENT" cascade="all">
<key column="CONTENT_ID"></key>
<many-to-many column="MENU_ID" class="com.intelli.epub.domain.Menu"/>
</set>
</class>
</hibernate-mapping>
这是另一个
<hibernate-mapping>
<class name="com.intelli.epub.domain.Menu" table="MENU">
<id name="id" type="java.lang.Long">
<column name="ID" />
<generator class="native" />
</id>
<property name="text" type="java.lang.String">
<column name="TEXT" />
</property>
<set name="contents" table="MENU_CONTENT" inverse="true">
<key column="MENU_ID"></key>
<many-to-many column="CONTENT_ID" class="com.intelli.epub.domain.Content"/>
</set>
</class>
:
当像这样保存时:
Content content = new Content();
content.setCreatedDate(new Date());
content.setWriter(some user here);
content.setText("some text here");
Menu menu1 = new Menu("menu1");
Menu menu2 = new Menu("menu2");
Set<Menu> menus = new HashSet();
menus.add(menu1);
menus.add(menu2);
content.setMenus(menus);
contentDao.saveOrUpdate(content);
现在menu1和menu2将被保存在MENU表中,但是MENU_CONTENT表没有任何反应; MENU_CONTENT 表没有主键字段,而是 MENU_ID 和 CONTENT_ID 一起为主键。我不知道是不是这个问题。请帮我。谢谢。
I am using Spring HibernateTemplate, OpenSessionInViewFilter(actually I extended this class and created my own to switch to FLUSH.AUTO Mode) and Mysql for implementing hibernate many-to-many association. However when I save an object, corresponding many-to-many table's values are not inserted. Does anybody can help me? Thank you.
here is the mapping xml
<hibernate-mapping>
<class name="com.intelli.epub.domain.Content" table="CONTENT">
<id name="id" type="java.lang.Long">
<column name="ID" />
<generator class="native" />
</id>
<property name="title" type="java.lang.String">
<column name="TITLE" />
</property>
<property name="text" type="java.lang.String">
<column name="TEXT" />
</property>
<many-to-one name="writer" class="com.intelli.epub.domain.User" fetch="join">
<column name="WRITER" />
</many-to-one>
<property name="createdDate" type="java.util.Date">
<column name="CREATEDDATE" />
</property>
<set name="menus" table="MENU_CONTENT" cascade="all">
<key column="CONTENT_ID"></key>
<many-to-many column="MENU_ID" class="com.intelli.epub.domain.Menu"/>
</set>
</class>
</hibernate-mapping>
another one:
<hibernate-mapping>
<class name="com.intelli.epub.domain.Menu" table="MENU">
<id name="id" type="java.lang.Long">
<column name="ID" />
<generator class="native" />
</id>
<property name="text" type="java.lang.String">
<column name="TEXT" />
</property>
<set name="contents" table="MENU_CONTENT" inverse="true">
<key column="MENU_ID"></key>
<many-to-many column="CONTENT_ID" class="com.intelli.epub.domain.Content"/>
</set>
</class>
and when saving like this:
Content content = new Content();
content.setCreatedDate(new Date());
content.setWriter(some user here);
content.setText("some text here");
Menu menu1 = new Menu("menu1");
Menu menu2 = new Menu("menu2");
Set<Menu> menus = new HashSet();
menus.add(menu1);
menus.add(menu2);
content.setMenus(menus);
contentDao.saveOrUpdate(content);
Now menu1 and menu2 would be saved in the MENU table, However nothing happens to MENU_CONTENT table; MENU_CONTENT table doesn't have a primary key field, instead MENU_ID and CONTENT_ID are primary key together. I don't know if it's the problem. Please help me. Thank you.
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我找到了解决方案。而不是使用 Spring HibernateTemplate。我将它包装在常规会话和事务中,如下所示。
这是我的会话过滤器,它继承自 OpenSessionInViewFilter
}
有谁知道一种方法来处理这个问题,而无需自己编写会话管理?
I found a solution. Instead of using Spring HibernateTemplate. I wrapped it in regular session and transaction like this.
And here is my session filter which inherited from OpenSessionInViewFilter
}
Does anybody know a way to handle this without bothering to write session management myself?