HQL语句报错
[解决办法]
private Authority authority;在这个类中，定义这个对象，有意义吗？
改为：
select a.id,a.name,a.description,b.id,b.name from Authority a left join Authority b on a.id = b.id where a.id is not null
[解决办法]
既然你都用了hibernate，父对象a.authority可以通过hibernate内部的机制获取，为啥还要自己写HQL？
[解决办法]
select a.id,a.name,a.description,b.id,b.name from pojo.Authority as a left join a.authority as b
先试试前面,
再看添加条件 where b.id is not null
