failed to lazily initialize a collection of role
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failed to lazily initialize a collection of role
分类： 技术2007-02-12 20:11
在某个表自己进行一对多的关系的时候，在hibernate配置文件中，如果这样常规配置：
<set name="childrens" inverse="true">
<key>
<column name="parentid" />
</key>
<one-to-many class="Question" />
</set>
看起来好像没什么，但运行起来，当你getChildrens后，就会出现failed to lazily initialize a collection of role这个错误。
原因可能是当你加载类似于树型结构的类时，需要一次全部加载，而不能让children在parent已经加载后再加载，解决方法是
<set name="childrens" inverse="true" lazy="false">
<key>
<column name="parentid" />
</key>
<one-to-many class="Question" />
</set>
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