java.lang.IllegalArgumentException: node to traverse cannot be null!
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问题解决:
出现这种问题是因为HQL语句出现问题，引起内部查询对象为空，无法处理为空值引起的。解决方法，检查HQL语句（尤其是关键字）。
注意hql中的字符类型，要加单引号‘“+ +”’；
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- java.lang.IllegalArgumentException: node to traverse cannot be null!
- java.lang.IllegalArgumentException: node to traverse cannot be null!
- java.lang.IllegalArgumentException: node to traverse cannot be null!
- java.lang.IllegalArgumentException: node to traverse cannot be null
- java.lang.IllegalArgumentException: node to traverse cannot be null!
- java.lang.IllegalArgumentException: node to traverse cannot be null!
- java.lang.IllegalArgumentException: node to traverse cannot be null!
- java.lang.IllegalArgumentException: node to traverse cannot be null!
- 错误：java.lang.IllegalArgumentException: node to traverse cannot be null!
- java.lang.IllegalArgumentException: node to traverse cannot be null!
- java.lang.IllegalArgumentException: node to traverse cannot be null!
- java.lang.IllegalArgumentException: node to traverse cannot be null!
- java.lang.IllegalArgumentException: node to traverse cannot be null!
- java.lang.IllegalArgumentException: node to traverse cannot be null!
- java.lang.IllegalArgumentException: node to traverse cannot be null!
- java.lang.IllegalArgumentException: node to traverse cannot be null!
- java.lang.IllegalArgumentException: node to traverse cannot be null!
- java.lang.IllegalArgumentException: node to traverse cannot be null!
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