add fastjson .
<artifactId>zkclient</artifactId>
</dependency>
<!-- zookeeper -->
+
+ <dependency>
+ <groupId>com.alibaba</groupId>
+ <artifactId>fastjson</artifactId>
+ <version>1.2.53</version>
+ </dependency>
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
