List of dependency jar files in Maven

Question

Using Maven 2, is there a way I can list out the jar dependencies as just the file names?

mvn dependency:build-classpath 

can list the jar

Answer 1

Actually, for just the final list of jars, simply use

mvn dependency:list

Which is lot more simple than dependency:tree which is an overkill to simply get the final list as it shows detailed transitive tree and conflict resolution (with verbose).

Answer 2

Here's the command you're asking for

$ mvn dependency:tree

For large projects it can output a lot of text. I assume that you want to check that dependency tree contains a certain dependency, so you don't need a full list.

Here's how you can filter output on Windows:

$ mvn dependency:tree | findstr javax.persistence

And here's how you can do it on Linux:

$ mvn dependency:tree | grep javax.persistence

Maven way to filter the dependency tree (works in Windows cmd, MacOS and Linux shell):

$ mvn dependency:tree -Dincludes=javax.persistence:*

Maven way (Windows PowerShell):

$ mvn dependency:tree '-Dincludes=javax.persistence:*'

Answer 3

To add a notch to the existing answers, the current maven-dependency-plugin allows saving the classpath to a property with the outputProperty parameter.

Answer 4

I may be missing something here, but as you've already used copy-dependencies it sounds like what you're really after is just a list of files in a specified directory.

Ant can do this for you without any problems, as can a shell script.

Answer 5

Have you looked at the Apache Felix project? It has a whole mess of plugins, including a bundle plugin that should do what you want.

Also, have you tried the <addClasspath> tag with <manifestFile>? That should have the desired effect of merging the classpath into your manifest.

<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-jar-plugin</artifactId>
  ...
  <configuration>
    <archive>
      <addClasspath>true</addClasspath>
      <manifestFile>src/main/resources/META-INF/MANIFEST.MF</manifestFile>
    </archive>
  </configuration>
  ...
</plugin>

Answer 6

As best as I can tell, you can't get exactly that output, with the commas and no spaces. Both via the command line and via the pom.xml file, the maven-dependency-plugin or the CLI freaks out if you specify spaces or the '' (empty string) as a substitute with either pathSeparator or fileSeparator. So, you may be forced to reach something of a compromise. You can

    mvn dependency:build-classpath -Dmdep.pathSeparator=":" -Dmdep.prefix='' -Dmdep.fileSeparator=":" -Dmdep.outputFile=classpath

However, that should get you a full list, separated by '::' instead of just ',', but it works. If you run:

    mvn dependency:build-classpath -Dmdep.pathSeparator="@REPLACEWITHCOMMA" -Dmdep.prefix='' -Dmdep.fileSeparator="@" -Dmdep.outputFile=classpath

and attach this to the generate-resources phase and filter that resource later by setting the correct property in the process-resources phase of the lifecycle, you should be able to get just the comma.

You can see the full list of options at: http://maven.apache.org/plugins/maven-dependency-plugin/build-classpath-mojo.html