构建Storm时Zookeeper的ClassNotFoundException

本文介绍了构建Storm时Zookeeper的ClassNotFoundException的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 我是java和Storm的新手所以请原谅任何明显的错误。 我正试图使用​​水槽连接器运行风暴但它崩溃时出现以下错误：I'm new to java and Storm so please forgive any obvious mistakes.I'm trying to run storm with a flume connectorbut It crashes with the following error:java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:297) at java.lang.Thread.run(Thread.java:744)Caused by: java.lang.ExceptionInInitializerError at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:270) at clojure.lang.RT.loadClassForName(RT.java:2056) at clojure.lang.RT.load(RT.java:419) at clojure.lang.RT.load(RT.java:400) at clojure.core$load$fn__4890.invoke(core.clj:5415) at clojure.core$load.doInvoke(core.clj:5414) at clojure.lang.RestFn.invoke(RestFn.java:408) at clojure.core$load_one.invoke(core.clj:5227) at clojure.core$load_lib.doInvoke(core.clj:5264) at clojure.lang.RestFn.applyTo(RestFn.java:142) at clojure.core$apply.invoke(core.clj:603) at clojure.core$load_libs.doInvoke(core.clj:5302) at clojure.lang.RestFn.applyTo(RestFn.java:137) at clojure.core$apply.invoke(core.clj:603) at clojure.core$require.doInvoke(core.clj:5381) at clojure.lang.RestFn.invoke(RestFn.java:408) at backtype.storm.cluster$loading__4784__auto__.invoke(cluster.clj:1) at backtype.storm.cluster__init.load(Unknown Source) at backtype.storm.cluster__init.<clinit>(Unknown Source) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:270) at clojure.lang.RT.loadClassForName(RT.java:2056) at clojure.lang.RT.load(RT.java:419) at clojure.lang.RT.load(RT.java:400) at clojure.core$load$fn__4890.invoke(core.clj:5415) at clojure.core$load.doInvoke(core.clj:5414) at clojure.lang.RestFn.invoke(RestFn.java:408) at clojure.core$load_one.invoke(core.clj:5227) at clojure.core$load_lib.doInvoke(core.clj:5264) at clojure.lang.RestFn.applyTo(RestFn.java:142) at clojure.core$apply.invoke(core.clj:603) at clojure.core$load_libs.doInvoke(core.clj:5302) at clojure.lang.RestFn.applyTo(RestFn.java:137) at clojure.core$apply.invoke(core.clj:603) at clojure.core$require.doInvoke(core.clj:5381) at clojure.lang.RestFn.invoke(RestFn.java:408) at backtype.storm.daemon.nimbus__init.load(Unknown Source) at backtype.storm.daemon.nimbus__init.<clinit>(Unknown Source) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:270) at clojure.lang.RT.loadClassForName(RT.java:2056) at clojure.lang.RT.load(RT.java:419) at clojure.lang.RT.load(RT.java:400) at clojure.core$load$fn__4890.invoke(core.clj:5415) at clojure.core$load.doInvoke(core.clj:5414) at clojure.lang.RestFn.invoke(RestFn.java:408) at clojure.core$load_one.invoke(core.clj:5227) at clojure.core$load_lib.doInvoke(core.clj:5264) at clojure.lang.RestFn.applyTo(RestFn.java:142) at clojure.core$apply.invoke(core.clj:603) at clojure.core$load_libs.doInvoke(core.clj:5302) at clojure.lang.RestFn.applyTo(RestFn.java:137) at clojure.core$apply.invoke(core.clj:603) at clojure.core$require.doInvoke(core.clj:5381) at clojure.lang.RestFn.invoke(RestFn.java:408) at backtype.storm.testing$loading__4784__auto__.invoke(testing.clj:1) at backtype.storm.testing__init.load(Unknown Source) at backtype.storm.testing__init.<clinit>(Unknown Source) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:270) at clojure.lang.RT.loadClassForName(RT.java:2056) at clojure.lang.RT.load(RT.java:419) at clojure.lang.RT.load(RT.java:400) at clojure.core$load$fn__4890.invoke(core.clj:5415) at clojure.core$load.doInvoke(core.clj:5414) at clojure.lang.RestFn.invoke(RestFn.java:408) at clojure.core$load_one.invoke(core.clj:5227) at clojure.core$load_lib.doInvoke(core.clj:5264) at clojure.lang.RestFn.applyTo(RestFn.java:142) at clojure.core$apply.invoke(core.clj:603) at clojure.core$load_libs.doInvoke(core.clj:5302) at clojure.lang.RestFn.applyTo(RestFn.java:137) at clojure.core$apply.invoke(core.clj:605) at clojure.core$use.doInvoke(core.clj:5392) at clojure.lang.RestFn.invoke(RestFn.java:408) at backtype.storm.LocalCluster$loading__4784__auto__.invoke(LocalCluster.clj:1) at backtype.storm.LocalCluster__init.load(Unknown Source) at backtype.storm.LocalCluster__init.<clinit>(Unknown Source) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:270) at clojure.lang.RT.loadClassForName(RT.java:2056) at clojure.lang.RT.load(RT.java:419) at clojure.lang.RT.load(RT.java:400) at clojure.core$load$fn__4890.invoke(core.clj:5415) at clojure.core$load.doInvoke(core.clj:5414) at clojure.lang.RestFn.invoke(RestFn.java:408) at clojure.lang.Var.invoke(Var.java:415) at backtype.storm.LocalCluster.<clinit>(Unknown Source) at com.storm.WordCountTopology.main(WordCountTopology.java:97) ... 6 moreCaused by: java.lang.ClassNotFoundException: org.apache.zookeeper.server.NIOServerCnxn$Factory at java.net.URLClassLoader$1.run(URLClassLoader.java:366) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:425) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:190) at backtype.storm.zookeeper$loading__4784__auto__.invoke(zookeeper.clj:1) at backtype.storm.zookeeper__init.load(Unknown Source) at backtype.storm.zookeeper__init.<clinit>(Unknown Source) ... 96 more我的pom文件<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.storm</groupId> <artifactId>my-storm</artifactId> <version>1.0-SNAPSHOT</version> <packaging>jar</packaging> <name>my-storm</name> <url>http://maven.apache.org</url> <properties> <flume.version>1.3.0-cdh4.2.1</flume.version> <hadoop.version>2.0.0-cdh4.2.1</hadoop.version> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> <repositories> <repository> <id>clojars.org</id> <url>http://clojars.org/repo</url> </repository> <repository> <id>cdh-maven-repo</id> <name>CDH Maven Repository</name> <url>https://repository.cloudera.com/content/repositories/releases/</url> </repository> </repositories> <dependencies> <dependency> <groupId>storm</groupId> <artifactId>storm</artifactId> <version>0.8.2</version> <scope>compile</scope> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <dependency> <groupId>org.apache.flume</groupId> <artifactId>flume-ng-embedded-agent</artifactId> <version>${flume.version}</version> </dependency> <dependency> <groupId>org.apache.flume</groupId> <artifactId>flume-ng-core</artifactId> <version>${flume.version}</version> <exclusions> <exclusion> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.apache.flume</groupId> <artifactId>flume-ng-configuration</artifactId> <version>${flume.version}</version> </dependency> <dependency> <groupId>org.apache.flume</groupId> <artifactId>flume-ng-node</artifactId> <version>${flume.version}</version> </dependency> <dependency> <groupId>org.apache.hadoop</groupId> <artifactId>hadoop-common</artifactId> <version>${hadoop.version}</version> </dependency> <dependency> <groupId>org.apache.zookeeper</groupId> <artifactId>zookeeper</artifactId> <version>3.4.5</version> <scope>test</scope> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>1.5.8</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>2.3.2</version> <configuration> <source>1.7</source> <target>1.7</target> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-release-plugin</artifactId> <version>2.0-beta-9</version> </plugin> </plugins> </build></project> $uname -a :Linux 2.6.32-358.23.2.el6.x86_64 #1 SMP Thu Oct 17 10:27:22 CEST 2013 x86_64 x86_64 x86_64 GNU/Linux $locate zookeeper .m2/repository/org/apache/zookeeper/zookeeper/3.4.5-cdh4.2.1/zookeeper-3.4.5-cdh4.2.1.pom你能解释一下我错过了什么吗？Can you please explain what am I missing?推荐答案似乎关键在于：Caused by: java.lang.ClassNotFoundException: org.apache.zookeeper.server.NIOServerCnxn$Factory这似乎是由使用版本 3.4.5 zookeeper 。您是否尝试过降级，可能是版本 3.3.6 ？This seems caused by using the version 3.4.5 of zookeeper. Have you tried a downgrade to, maybe version 3.3.6?分支-3.3包含内部类 NIOServerCnxn $工厂但分支-3.4有 NIOServerCnxnFactory 改为The branch-3.3 contains that Inner Class NIOServerCnxn$Factory but the branch-3.4 has the NIOServerCnxnFactory instead 这篇关于构建Storm时Zookeeper的ClassNotFoundException的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！