hibernate - (FlushMode.NEVER/MANUAL): Turn your Session into
2010-09-07 10:34
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(FlushMode.NEVER/MANUAL): Turn your Session into
文章分类:Java编程org.springframework.dao.InvalidDataAccessApiUsageException: Write
operations are not allowed in read-only mode (FlushMode.NEVER/MANUAL):
Turn your Session into FlushMode.COMMIT/AUTO or remove 'readOnly'
marker from transaction definition.
执行这个方法得时候 出错了getHibernateTemplate().save(agentLog);
错误原因:
OpenSessionInViewFilter在getSession的时候,会把获取回来的session的flush mode
设为FlushMode.NEVER。然后把该sessionFactory绑定到
TransactionSynchronizationManager,使request的整个过程都使用同一个session,在请求过后再接除该
sessionFactory的绑定,最后closeSessionIfNecessary根据该session是否已和transaction绑定来决
定是否关闭session。在这个过程中,若HibernateTemplate
发现自当前session有不是readOnly的transaction,就会获取到FlushMode.AUTO
Session,使方法拥有写权限。
也即是,如果有不是readOnly的transaction就可以由Flush.NEVER转为Flush.AUTO,拥有
insert,update,delete操作权限,如果没有transaction,并且没有另外人为地设flush
model的话,则doFilter的整个过程都是Flush.NEVER。所以受transaction保护的方法有写权限,没受保护的则没有。
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