org.hibernate.LazyInitializationException: could not initialize proxy - the owni

本文探讨了在Spring管理的环境下,如何解决Hibernate session关闭导致的LazyInitializationException问题,通过配置filter和调整lazy初始化策略实现持久化层的生命周期管理。

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org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed

分析原因:
由于Spring控制的Hibernate的生命周期只针对数据层和服务层,而未管理到表现层,所以会出现the owning Session was closed的现象。针对这一点,我通过hibernate filter的方式来解决。

解决方法:

第一种:在web.xml中配置filter来解决。

org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed - 天涯草 - 天涯草 <!--  hibernate session filter  --> 
org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed - 天涯草 - 天涯草 
 < filter > 
org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed - 天涯草 - 天涯草  
 < filter-name > hibernateFilter </ filter-name > 
org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed - 天涯草 - 天涯草  
 < filter-class >    org.springframework.orm.hibernate3.support.OpenSessionInViewFilter
org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed - 天涯草 - 天涯草  
 </ filter-class > 
org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed - 天涯草 - 天涯草 
 </ filter > 
org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed - 天涯草 - 天涯草 
org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed - 天涯草 - 天涯草 
< filter-mapping > 
org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed - 天涯草 - 天涯草  
 < filter-name > hibernateFilter </ filter-name > 
org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed - 天涯草 - 天涯草  
 < url-pattern > *.do </ url-pattern > 
org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed - 天涯草 - 天涯草 
 </ filter-mapping >

第二种lazy="false"
也可以在Service 或者 dao 层把lazy的Hibernate.initialize强制加载它.
<many-to-one>里面的属性lazy="false"

<set>里面的属性lazy="true"
<one-to-many>
</set>
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