node to traverse cannot be null!
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今天再用ssh整个网络商城的时候遇到了这样一个问题:
java.lang.IllegalArgumentException: node to traverse cannot be null!
经过一番百度之后,说是,这是由于使用hibernate 中
的HQL做查询时出现了空返回值的错误,很有可能HQL语句本身就写错了
经过仔细排查,发现是自己的hql语句打错了一个单词,
String hql = "form CategorySecond order by csid desc";
改过之后:String hql = "from CategorySecond order by csid desc";
没有再出现这个错误,所以在写hql的时候要特别的注意!
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