1 异常结果
org.apache.zookeeper.KeeperException$UnimplementedException: KeeperErrorCode = Unimplemented for /curator at org.apache.zookeeper.KeeperException.create(KeeperException.java:103) at org.apache.zookeeper.KeeperException.create(KeeperException.java:51) at org.apache.zookeeper.ZooKeeper.create(ZooKeeper.java:1525) at org.apache.curator.framework.imps.CreateBuilderImpl$17.call(CreateBuilderImpl.java:1189) at org.apache.curator.framework.imps.CreateBuilderImpl$17.call(CreateBuilderImpl.java:1166) at org.apache.curator.connection.StandardConnectionHandlingPolicy.callWithRetry(StandardConnectionHandlingPolicy.java:64) at org.apache.curator.RetryLoop.callWithRetry(RetryLoop.java:100) at org.apache.curator.framework.imps.CreateBuilderImpl.pathInForeground(CreateBuilderImpl.java:1163) at org.apache.curator.framework.imps.CreateBuilderImpl.protectedPathInForeground(CreateBuilderImpl.java:603) at org.apache.curator.framework.imps.CreateBuilderImpl.forPath(CreateBuilderImpl.java:593) at org.apache.curator.framework.imps.CreateBuilderImpl.forPath(CreateBuilderImpl.java:47) at cn.practice.zk.ZookeeperClientPractice.test(ZookeeperClientPractice.java:41) 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) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at org.junit.runners.ParentRunner.run(ParentRunner.java:363) at org.junit.runner.JUnitCore.run(JUnitCore.java:137) at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68) at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47) at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242) at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
2 原因是Zookeeper的版本与curator的版本不匹配造成的
自己查阅了一下资料发现匹配规则如下
curator作为zookeeper的客户端,并不是最新版的就没问题,因为它的版本和zookeeper的版本有对应关系。 ZooKeeper 3.5.x Curator4.0十分依赖Zookeeper3.5.X ZooKeeper 3.4.x Curator4.0在软兼容模式下支持Zookeeper3.4.X,但是需要依赖排除zookeeper 复制代码 <dependency> <groupId>org.apache.curator</groupId> <artifactId>curator-recipes</artifactId> <version>${curator-version}</version> <exclusions> <exclusion> <groupId>org.apache.zookeeper</groupId> <artifactId>zookeeper</artifactId> </exclusion> </exclusions> </dependency> 复制代码 同时必须加入Zookeeper3.4.X的依赖,并且呢,因为是软兼容模式,一些3.4.X不具备的新特性是不能使用的。 低版本 对于Curator2.X是支持Zookeeper3.4.X的,所以如果目前你是Zookeeper3.4.X的版本,还是使用Curator2.X的吧,
3 解决方案,因为我的部署Zookeeper版本为3.4.5所以应该选择2.x的curator版本
<dependency> <groupId>org.apache.curator</groupId> <artifactId>curator-client</artifactId> <version>2.12.0</version> </dependency> <dependency> <groupId>org.apache.curator</groupId> <artifactId>curator-framework</artifactId> <version>2.12.0</version> </dependency>
重新maven导入一下jar包解决问题,之前已经创建成功过了,所以抛出节点已经存在的错误