使用Curator时报错，原因是因为版本问题
zookeeper版本：zookeeper-3.4.8
cuartor版本：3.2.0
看Curator官网的声明：
地址：http://curator.apache.org/
The are currently two released versions of Curator, 2.x.x and 3.x.x:

Curator 2.x.x – compatible with both ZooKeeper 3.4.x and ZooKeeper 3.5.x
Curator 3.x.x – compatible only with ZooKeeper 3.5.x and includes support for new features such as dynamic reconfiguration, etc.
版本不匹配的问题，我这里是使用的curator版本过高，使用2.xx就没有问题了。