Programmatically resolving Maven dependencies outside of a plugin - get RepositorySystemSession and RepositorySystem

Question

Maybe this is going to be a larger task than I had originally thought, but regardless, I\'m trying to load a MavenProject from a file and then resolve its depen

Answer 1

Try this (as can be seen from the ather-demo):

...
LocalRepository localRepository = new LocalRepository("/path/to/local-repo");

RepositorySystem system = getRepositorySystemInstance();
RepositorySystemSession session = getRepositorySystemSessionInstance(system, localRepository);
....

public static RepositorySystem getRepositorySystemInstance()
{
    /**
     * Aether's components implement org.sonatype.aether.spi.locator.Service to ease manual wiring and using the
     * prepopulated DefaultServiceLocator, we only need to register the repository connector factories.
     */
    MavenServiceLocator locator = new MavenServiceLocator();
    locator.addService(RepositoryConnectorFactory.class, FileRepositoryConnectorFactory.class);
    locator.addService(RepositoryConnectorFactory.class, WagonRepositoryConnectorFactory.class);
    locator.setServices(WagonProvider.class, new ManualWagonProvider());

    return locator.getService(RepositorySystem.class);
}

private static RepositorySystemSession getRepositorySystemSessionInstance(RepositorySystem system,
                                                                          LocalRepository localRepo)
{
    MavenRepositorySystemSession session = new MavenRepositorySystemSession();

    session.setLocalRepositoryManager(system.newLocalRepositoryManager(localRepo));

    session.setTransferListener(new ConsoleTransferListener());
    session.setRepositoryListener(new ConsoleRepositoryListener());

    // Set this in order to generate dirty trees
    session.setDependencyGraphTransformer(null);

    return session;
}