can not connect zookeeper? starting consumer error

[DragWeb]

two project can not in one server , change the serverPort also not work , can you help me?

when one project worked, the other one can not work, below error:

2018-04-03 11:49:+08:00: Error occurred when starting consumer. err: { Error: Error running instance method
org.I0Itec.zkclient.exception.ZkException: Unable to connect to zookeeper1:2181,zookeeper2:2181,zookeeper3:2181/kafka
	at org.I0Itec.zkclient.ZkConnection.connect(ZkConnection.java:66)
	at org.I0Itec.zkclient.ZkClient.connect(ZkClient.java:876)
	at org.I0Itec.zkclient.ZkClient.<init>(ZkClient.java:98)
	at org.I0Itec.zkclient.ZkClient.<init>(ZkClient.java:84)
	at kafka.consumer.ZookeeperConsumerConnector.connectZk(ZookeeperConsumerConnector.scala:171)
	at kafka.consumer.ZookeeperConsumerConnector.<init>(ZookeeperConsumerConnector.scala:126)
	at kafka.javaapi.consumer.ZookeeperConsumerConnector.<init>(ZookeeperConsumerConnector.scala:66)
	at kafka.javaapi.consumer.ZookeeperConsumerConnector.<init>(ZookeeperConsumerConnector.scala:69)
	at kafka.consumer.Consumer$.createJavaConsumerConnector(ConsumerConnector.scala:105)
	at kafka.consumer.Consumer.createJavaConsumerConnector(ConsumerConnector.scala)
	at com.liveperson.kafka.consumer.MultiThreadHLConsumer.start(MultiThreadHLConsumer.java:47)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
Caused by: java.net.UnknownHostException: zookeeper1: unknown error
	at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)
	at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)
	at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)
	at java.net.InetAddress.getAllByName0(InetAddress.java:1276)
	at java.net.InetAddress.getAllByName(InetAddress.java:1192)
	at java.net.InetAddress.getAllByName(InetAddress.java:1126)
	at org.apache.zookeeper.client.StaticHostProvider.<init>(StaticHostProvider.java:61)
	at org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:445)
	at org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:380)
	at org.I0Itec.zkclient.ZkConnection.connect(ZkConnection.java:64)
	... 14 more

  cause: nodeJava_org_I0Itec_zkclient_exception_ZkException {} }