利用ZooKeeper简单实现分布式锁

参考1：

https://blog.csdn.net/peace1213/article/details/52571445

https://www.cnblogs.com/liuyang0/p/6800538.html

https://blog.csdn.net/evankaka/article/details/70568951

https://blog.csdn.net/evankaka/article/details/70570941

https://blog.csdn.net/simba_1986/article/details/60966005

https://www.cnblogs.com/duanxz/p/6244045.html