解决org.apache.zookeeper.KeeperException$UnimplementedException:KeeperErrorCode = Unimplemented for /S_org.apache.zookeeper.keeperexception$noauthexcepti

主要原因是SpringCloud hoxton整合Zookerper3.5.3-beta作为注册中心的时候，与服务器版本不一致导致的，解决办法：
这是我的Maven依赖：

<dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
 </dependency>
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只需把Maven依赖改为：

	<dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
		<exclusion>
			<groupId>org.apache.zookeeper</groupId>
			<artifactId>zookeeper</artifactId>
		</exclusion>
    </dependency>
	<dependency>
        <groupId>org.apache.zookeeper</groupId>
        <artifactId>zookeeper</artifactId>
		<version>x.x.x</version>
    </dependency>
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注意：

x.x.x是你服务器里面搭建Zookeeper的版本号。