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Elastic Docs ›Java API [5.3]

Embedding jar with dependencies

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Embedding jar with dependencies

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If you want to create a single jar containing your application and all dependencies, you should not use maven-assembly-plugin for that because it can not deal with META-INF/services structure which is required by Lucene jars.

Instead, you can use maven-shade-plugin and configure it as follow:

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-shade-plugin</artifactId>
    <version>2.4.1</version>
    <executions>
        <execution>
            <phase>package</phase>
            <goals><goal>shade</goal></goals>
            <configuration>
                <transformers>
                    <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
                </transformers>
            </configuration>
        </execution>
    </executions>
</plugin>

Note that if you have a main class you want to automatically call when running java -jar yourjar.jar, just add it to the transformers:

<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
    <mainClass>org.elasticsearch.demo.Generate</mainClass>
</transformer>
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