解决： Unable to connect to zookeeper server within timeout: 5000

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一个项目启动不起来了，报错如题：

Caused by: org.I0Itec.zkclient.exception.ZkTimeoutException: Unable to connect to zookeeper server within timeout: 5000at org.I0Itec.zkclient.ZkClient.connect(ZkClient.java:1232)at org.I0Itec.zkclient.ZkClient.<init>(ZkClient.java:156)at org.I0Itec.zkclient.ZkClient.<init>(ZkClient.java:130)at org.I0Itec.zkclient.ZkClient.<init>(ZkClient.java:126)at org.I0Itec.zkclient.ZkClient.<init>(ZkClient.java:93)at com.alibaba.dubbo.remoting.zookeeper.zkclient.ZkclientZookeeperClient.<init>(ZkclientZookeeperClient.java:29)at com.alibaba.dubbo.remoting.zookeeper.zkclient.ZkclientZookeeperTransporter.connect(ZkclientZookeeperTransporter.java:10)at com.alibaba.dubbo.remoting.zookeeper.ZookeeperTransporter$Adpative.connect(ZookeeperTransporter$Adpative.java)at com.alibaba.dubbo.registry.zookeeper.ZookeeperRegistry.<init>(ZookeeperRegistry.java:69)at com.alibaba.dubbo.registry.zookeeper.ZookeeperRegistryFactory.createRegistry(ZookeeperRegistryFactory.java:37)

出错原因： zookeeper 地址配置错了，用的是已废弃的一个服务器上的 zookeeper 服务。

注释掉已废弃地址，改为最新地址：

#dubbo.registry.address=zookeeper://116.1xx.xx.xx:2181 // 已废弃地址
dubbo.registry.address=zookeeper://xxx.x4.1xx.xx:2181?register=false
dubbo.registry.client=zkclient

地址配置对了，服务就能正常启动了。

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解决： Unable to connect to zookeeper server within timeout: 5000

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