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org.hibernate.LazyInitializationException:failed to lazily initialize a collecti

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今天的项目碰到了一个问题,现在记录下,在多对多的查询下出现的。

 

错误代码:

org.hibernate.LazyInitializationException:failed to lazily initialize a collection of role:*.Class.property,no session or session was closed

错误原因:

在hibernate的映射关系中由于延迟加载,之前的操作使session已经关闭,所以加 载set属性时无可用session

解决方案:

设置set的属性lazy="false"

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