这是我工具集的设计思路:
https://blog.csdn.net/qmhball/article/details/86719671
https://blog.csdn.net/weixin_38450840/article/details/80812572
https://blog.csdn.net/fzz19960915/article/details/70948553
https://www.jianshu.com/p/1361f1f43e99
https://blog.csdn.net/wangyijie521/article/details/112844717
https://www.cnblogs.com/hellojesson/p/12109312.html
https://blog.csdn.net/wangxiaotongfan/article/details/93498164