【发布时间】：2017-01-25 05:38:40
【问题描述】：
我正在尝试通过使用其 java api 制作一个基本程序来熟悉 elasticsearch。我已经研究了一段时间的答案，但我不确定我执行的解决方案是否不正确，或者只是没有看到真正的问题。
我正在使用 elasticsearch-5.1.1 并下载了最新的传输版本 (5.1.1)。我还在我的项目结构中添加了这两个（包括弹性搜索下载附带的所有 jar 文件）。
提前致谢！
运行我的测试文件时，我收到以下错误。
错误：
java.lang.NoClassDefFoundError: org/elasticsearch/transport/Netty3Plugin
at org.elasticsearch.transport.client.PreBuiltTransportClient.<clinit>(PreBuiltTransportClient.java:54)
at DictionarySearch.ElasticSearch.<init>(ElasticSearch.java:41)
at test.TestIndexSearcher.verifyElasticSearch(TestIndexSearcher.java:64)
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$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:117)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:42)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:262)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:84)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
Caused by: java.lang.ClassNotFoundException: org.elasticsearch.transport.Netty3Plugin
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 30 more
我在我的 pom.xml 文件中添加了以下依赖项，并按照给定的directions 安装了 xpack。我的 pom.xml 与我的 log4j2.xml 文件一起位于 src/lib 中。
<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>org.elasticsearch.client</groupId>
<artifactId>transport</artifactId>
<version>5.1.1</version>
<repositories>
<repository>
<id>elasticsearch-releases</id>
<url>https://maven.elasticsearch.org/releases</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>x-pack-transport</artifactId>
<version>5.1.1</version>
</dependency>
<dependency>
<groupId>org.elasticsearch</groupId>
<artifactId>elasticsearch-transport-wares</artifactId>
<version>2.7.0</version>
</dependency>
<dependency>
<groupId>org.elasticsearch</groupId>
<artifactId>elasticsearch</artifactId>
<version>5.1.1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.elasticsearch.plugin</groupId>
<artifactId>transport-netty3-client</artifactId>
<version>5.1.1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>2.7</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.7</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.elasticsearch.plugin</groupId>
<artifactId>transport-netty4-client</artifactId>
<version>5.1.1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.elasticsearch.plugin</groupId>
<artifactId>reindex-client</artifactId>
<version>5.1.1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.elasticsearch.plugin</groupId>
<artifactId>lang-mustache-client</artifactId>
<version>5.1.1</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.elasticsearch.plugin</groupId>
<artifactId>percolator-client</artifactId>
<version>5.1.1</version>
<scope>compile</scope>
</dependency>
</dependencies>
<inceptionYear>2009</inceptionYear>
<licenses>
<license>
<name>The Apache Software License, Version 2.0</name>
<url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
<distribution>repo</distribution>
</license>
</licenses>
<developers>
<developer>
<name>Elastic</name>
<url>http://www.elastic.co</url>
</developer>
</developers>
<name>transport</name>
<description>Elasticsearch subproject :client:transport</description>
<url>https://github.com/elastic/elasticsearch</url>
<scm>
<url>git@github.com:elastic/elasticsearch.git</url>
</scm>
【问题讨论】：
标签： java maven elasticsearch