内容简介：我的zookeeper是安装在本地，用的默认端口2181，版本3.4.10。dubbo版本2.5.8。dubbo-demo-provider.xml配置文件修改为：<dubbo:registry address="zookeeper://127.0.0.1:2181"/>
我的zookeeper是安装在本地，用的默认端口2181，版本3.4.10。dubbo版本2.5.8。
dubbo-demo-provider.xml配置文件修改为：
<dubbo:registry address="zookeeper://127.0.0.1:2181"/>
运行Provider就会报下面的错：
[24/12/17 04:56:57:057 CST] main ERROR zkclient.ZkClientWrapper: [DUBBO] Timeout! zookeeper server can not be connected in : 30000ms!, dubbo version: 2.0.0, current host: 127.0.0.1
最后导致
Caused by: java.lang.IllegalStateException: Zookeeper is not connected yet!
at com.alibaba.dubbo.remoting.zookeeper.zkclient.ZkClientWrapper.createPersistent(ZkClientWrapper.java:82)
at com.alibaba.dubbo.remoting.zookeeper.zkclient.ZkclientZookeeperClient.createPersistent(ZkclientZookeeperClient.java:45)
at com.alibaba.dubbo.remoting.zookeeper.support.AbstractZookeeperClient.create(AbstractZookeeperClient.java:47)
at com.alibaba.dubbo.remoting.zookeeper.support.AbstractZookeeperClient.create(AbstractZookeeperClient.java:41)
at com.alibaba.dubbo.remoting.zookeeper.support.AbstractZookeeperClient.create(AbstractZookeeperClient.java:41)
at com.alibaba.dubbo.remoting.zookeeper.support.AbstractZookeeperClient.create(AbstractZookeeperClient.java:41)
at com.alibaba.dubbo.registry.zookeeper.ZookeeperRegistry.doRegister(ZookeeperRegistry.java:110)
... 21 more
求解答，非常感谢！
解决办法：
1，检查jdk版本，jdk1.6 dubbo 2.5版本，2.6版本则使用jdk1.8，dubbo的版本过高或者过低的原因！
2，配置zookeeper中的配置文件，配置超时时间，配大一点！
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