解决:Exception in thread main java.lang.NoSuchMethodError: com.google.common.util.concurrent.MoreExe
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1.报错:
Exception in thread "main" java.lang.NoSuchMethodError: com.google.common.util.concurrent.MoreExecutors
.directExecutor()Ljava/util/concurrent/Executor;
2. 解决方法:
问题
当项目中同时集成Hbase和Elasticsearch时,经常遇到依赖包冲突的问题,如com.google.guava,org.joda等。造成guava冲突是因为集成Hbase和ES时都用到了guava包,但是两者要求的版本不一样,ES 2.0 版本以上的要求guava(19.0+),Hbase 1.0要求的guava为16.0,如果把guava统一为16.0,则ES会因为guava的版本太低而报错。joda也如此。所以,要同时使用Hbase和ES,就得解决这个冲突。
解决办法
1、首先,新建maven项目,对pom.xml进行如下配置:
<?xml version="1.0" encoding="UTF-8"?>
<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.es</groupId>
<artifactId>esshade</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<dependencies>
<!-- elasticsearch -->
<dependency>
<groupId>org.elasticsearch</groupId>
<artifactId>elasticsearch</artifactId>
<version>2.4.1</version>
</dependency>
<dependency>
<groupId>org.elasticsearch.plugin</groupId>
<artifactId>delete-by-query</artifactId>
<version>2.4.1</version>
</dependency>
<!-- elasticsearch 依赖库结束 -->
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>2.4.1</version>
<configuration>
<createDependencyReducedPom>false</createDependencyReducedPom>
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<relocations>
<relocation>
<pattern>com.google.guava</pattern>
<shadedPattern>my.elasticsearch.guava</shadedPattern>
</relocation>
<relocation>
<pattern>org.joda</pattern>
<shadedPattern>my.elasticsearch.joda</shadedPattern>
</relocation>
<relocation>
<pattern>com.google.common</pattern>
<shadedPattern>my.elasticsearch.common</shadedPattern>
</relocation>
<relocation>
<pattern>com.google.thirdparty</pattern>
<shadedPattern>my.elasticsearch.thirdparty</shadedPattern>
</relocation>
</relocations>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer" />
</transformers>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>elasticsearch-releases</id>
<url>http://maven.elasticsearch.org/releases</url>
<releases>
<enabled>true</enabled>
<updatePolicy>daily</updatePolicy>
</releases>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
</project>
pom.xml文件配置好后,构建,得到jar包。如下图,依赖关系加入.m2文件夹里。
如上配置完成后,其实就是将com.google.guava等4个可能有冲突的jar包通过maven-shade-plugin插件迁移后,重新打个jar包从而使得在引入这个jar包时能够使用该jar包自己的依赖而不是使用外部依赖。
2、Hbase与ES的融合
在同时集成Hbase与ES的项目中,加入Hbase的依赖包,并加入步骤1中构建的依赖包:
<dependency>
<groupId>org.apache.hadoop</groupId>
<artifactId>hadoop-hdfs</artifactId>
<version>2.6.4</version>
</dependency>
<dependency>
<groupId>org.apache.hadoop</groupId>
<artifactId>hadoop-client</artifactId>
<version>2.6.4</version>
</dependency>
<dependency>
<groupId>org.apache.hbase</groupId>
<artifactId>hbase-client</artifactId>
<version>1.2.1</version>
</dependency>
<dependency>
<groupId>org.apache.hbase</groupId>
<artifactId>hbase</artifactId>
<version>1.2.1</version>
<type>pom</type>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>16.0.1</version>
</dependency>
<dependency>
<groupId>com.es</groupId>
<artifactId>esshade</artifactId>
<version>1.0-SNAPSHOT</version>
<exclusions>
<exclusion>
<groupId>org.elasticsearch</groupId>
<artifactId>elasticsearch</artifactId>
</exclusion>
</exclusions>
</dependency>
配置好了,重新清理构建,测试一下,Hbase和ES就可以同时使用了。
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版权声明:本文为CSDN博主「XiaoXiao_Yang77」的原创文章,遵循CC 4.0 BY-SA版权协议,转载请附上原文出处链接及本声明。
原文链接:https://blog.csdn.net/XiaoXiao_Yang77/article/details/78226424
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