How to run maven generated jar on CLI

Question

I'm trying to get a maven managed project to run on the command line.

I have a set of dependencies in the pom.xml which are subsequently downloaded and installed in the ~/.m2/repository/. I've included the necessary config in my pom to add the classpath to the jar manifest.

Now the problem is i'm attempting to run the jar thus: java -jar project-SNAPSHOT.jar.

Java can't find the downloaded dependencies (i'm assuming because they are listed without paths in the manifest?) , but i'm not sure how best to get this running.

Answer 1

Options 1:
The jar created does not have the dependent jar files. So, you need to tell java the class-path where all the dependent jars are

    java -cp /lcoation/of/dependency1.jar:/location/of/dependency2.jar:/location/of/dependency3.jar -jar project-SNAPSHOT.jar

Option 2:
The easier and much better solution is to use AppAssembler plugin. What it does it packages your jar in a directory structure that contains

1. dependent jars
2. the created jar
3. shell/windows scripts to execute it

have a look here http://www.mojohaus.org/appassembler/appassembler-maven-plugin/

Option 3:
If you do not want all the baggage and just wanted to have one jar-with-dependency You may want to refer here How can I create an executable JAR with dependencies using Maven?

This will contain all the dependent jars within it.

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Edit 1: For Option 1, Brad M mentioned that you can get a list of all your project's deps using the dependency plugin. dependency:build-classpath

Answer 2

mvn exec:java -Dexec.mainClass="com.vineetmanohar.module.Main" -Dexec.classpathScope=runtime  

You can find more examples here: 3 ways to run Java main from Maven.