一、摘要在上一篇文章，链接如下：https://www.cnblogs.com/xiao987334176/p/11434849.html(https://www.oschina.net/action/GoToLink?urlhttps%3A%2F%2Fwww.cnblogs.com%2Fxiao987334176%2Fp%2F114

packagecom.xiao.permission_system;importcom.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;importcom.baomidou.mybatisplus.core.conditions.query