HTTP ERROR: 500
Null value was assigned to a property of primitive type setter of channel.Channel.lft; nested exception is org.hibernate.PropertyAccessException: Null value was assigned to a property of primitive type setter of channel.Channel.lft
RequestURI=/wanghuiCMS/admin/articleChannelRight.action
Caused by:
org.springframework.orm.hibernate3.HibernateSystemException: Null value was assigned to a property of primitive type setter of channel.Channel.lft; nested exception is org.hibernate.PropertyAccessException: Null value was assigned to a property of primitive type setter of channel.Channel.lft
at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:676)
at org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:412)
at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:424)
at org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374)
at org.springframework.orm.hibernate3.HibernateTemplate.find(HibernateTemplate.java:921)
at org.springframework.orm.hibernate3.HibernateTemplate.find(HibernateTemplate.java:913)
at util.dao.HibernateDaoImpl.findAll(HibernateDaoImpl.java:113)
at channel.ChannelAction.articleChannelRight(ChannelAction.java:64)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
原因：数据库字段值为NULL,int 类型不能赋值为NULL，只能为0，但有些实际应用中，如学生分数，0表示0分，NULL，则表示暂无分数所以，要不设数据字段不为NULL，要不就是用Integer.
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