How to Package Maven Project as JAR with Dependencies - OSUCartography/MapComposer GitHub Wiki
In your pom.xml file, within the build > plugins > plugin node, add the following xml:
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<configuration>
<archive>
<manifest>
<mainClass>edu.oregonstate.carto.mapcomposer.server.Main</mainClass>
</manifest>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</plugin>
In <mainClass>, you specify the main class you want executed when you execute the JAR file.
Then, right click your project and select Custom > Goals....
Type the following and then click OK:
clean package assembly:single
Now, the jar with the necessary dependencies will be located in your target directory.