Get list of maven dependencies of org.apache.maven.project.MavenProject

Question

I'm trying to get a list of dependencies of some maven artifacts using org.apache.maven.project.MavenProject.

My code is like this.

public List<Dependencies> loadProject() {
    Model mavenModel = new Model();
    mavenModel.setModelVersion("4.0.0");
    mavenModel.setGroupId("org");
    mavenModel.setArtifactId("wso2");
    mavenModel.setVersion("1.0.0");

    addDependency(mavenModel, "com.google.inject", "guice", "4.2.2");
    addDependency(mavenModel, "ch.qos.logback", "logback-classic", "1.2.3");

    MavenProject mavenProject = new MavenProject(mavenModel);

    //******* Need to resolve dependencies of `mavenProject` and *******
    //******* get the list of dependencies of this project.    *******

    return dependencies;
}

private static void addDependency(Model mavenModel, String groupId, String artifactId, String version) {


Dependency dependency = new Dependency();
    dependency.setGroupId(groupId);
    dependency.setArtifactId(artifactId);
    dependency.setVersion(version);
    mavenModel.addDependency(dependency);
}

Basically I'm trying to get the dependency tree results which returns by mvn dependency:tree command as a list by programmatically.

Example For the artifacts:

• com.google.inject:guide:4.2.2
• ch.qos.logback:logback-classic:1.2.3

Dependency list:

List = [
com.google.inject:guice:jar:4.2.2:compile,
javax.inject:javax.inject:jar:1:compile,
aopalliance:aopalliance:jar:1.0:compile,
com.google.guava:guava:jar:25.1-android:compile,
com.google.code.findbugs:jsr305:jar:3.0.2:compile,
org.checkerframework:checker-compat-qual:jar:2.0.0:compile,
com.google.errorprone:error_prone_annotations:jar:2.1.3:compile,
com.google.j2objc:j2objc-annotations:jar:1.1:compile,
org.codehaus.mojo:animal-sniffer-annotations:jar:1.14:compile,
ch.qos.logback:logback-classic:jar:1.2.3:compile,
ch.qos.logback:logback-core:jar:1.2.3:compile,
org.slf4j:slf4j-api:jar:1.7.25:compile
]

Answer 1

You can use the method public Set<Artifact> getArtifacts() of your MavenProject class which returns a set of artifacts representing all dependencies that the project has, including transitive ones.

NB: Contents are lazily populated, so depending on what phases have run dependencies in some scopes won't be included. eg. if only compile phase has run, dependencies with scope test won't be included.

All the information are coming from the documentation that you can find here.