Maven assembly plugin attach sources of dependencies

Question

Some open source license require to distribute the original code for each dependency. I need to make the extracted sources available to my maven assembly plugin.

How to recursively get all the source-JARs for every single dependency used?

dependency:sources does only download source-dependencies to the local Maven repo, and not to a custom directory that I need to define.

This is not possible. What if you depend on a proprietary library that whose code is not public? — Tunaki
– Tunaki, Commented Feb 26, 2016 at 9:14
Of course this would not work if the sources are not available via maven. But most of them are. As I stated in my post I am only talking about open source components. — gorootde
– gorootde, Commented Feb 26, 2016 at 9:16
By the way, dependency:sources resolves the sources for all dependencies of your project (including transitive ones). So Im not sure why you're saying it isn't recursive. — Tunaki
– Tunaki, Commented Feb 26, 2016 at 9:20
the goal you mentioned has a parameter "outputFile" - does that not do what you need it to do? see: maven.apache.org/plugins/maven-dependency-plugin/… — wemu
– wemu, Commented Feb 26, 2016 at 11:30
No it does not, OutputFile specifies some kind of logFILE not a directory. — gorootde
– gorootde, Commented Feb 26, 2016 at 12:35

gorootde · Accepted Answer · 2016-02-26 12:40:30Z

Solution found:

 <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-dependency-plugin</artifactId> <version>2.9</version> <executions> <execution> <id>get-dependency-sources</id> <phase>package</phase> <goals> <goal>copy-dependencies</goal> </goals> <configuration> <outputDirectory>${sources.directory}</outputDirectory> <classifier>sources</classifier> <prependGroupId>true</prependGroupId> </configuration> </execution> </executions> </plugin>

in combination with

 <plugin> <artifactId>maven-antrun-plugin</artifactId> <version>1.7</version> <executions> <execution> <id>unpack-sources</id> <phase>package</phase> <goals> <goal>run</goal> </goals> <configuration> <target> <move todir="${sources.directory}"> <fileset dir="${sources.directory}"> <include name="**/*.jar"/> </fileset> <mapper type="glob" from="*.jar" to="*.zip"/> </move> </target> </configuration> </execution> ...

First collects all resources within ${sources.directory} and then renames the jars to zip files (which enables a "normal" user to view their contents in Windows Explorer. Alternatively you can also directly unzip the jars using the unzip ANT task.

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