1、Java基礎知識總結
https://github.com/Snailclimb/JavaGuide
面向對象:https://blog.csdn.net/qq_35813653/article/details/80979068
2、Cron表達式
https://www.cnblogs.com/GarfieldTom/p/3746290.html
3、Spring事務
https://juejin.im/post/5b00c52ef265da0b95276091
4、參考手冊:
http://www.dba.cn/book/mybatis/
5、Mysql操作手冊
http://dev.mysql.com/doc/refman/5.7/en/innodb-storage-engine.html
PS:一些常見的工具下載:
1.http://msdn.itellyou.cn/