我没有在网上找到任何可行的解决方案,所以我查看了 Maven 源代码并自己制定了一个解决方案。以下大部分代码都是从 Maven 源代码中复制的,我已经使用 Maven 3.5.4 对其进行了测试,并且运行良好。
import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.ArtifactUtils;
import org.apache.maven.execution.MavenSession;
import org.apache.maven.plugin.AbstractMojo;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugins.annotations.Mojo;
import org.apache.maven.plugins.annotations.Parameter;
import org.apache.maven.plugins.annotations.ResolutionScope;
import org.apache.maven.project.DefaultDependencyResolutionRequest;
import org.apache.maven.project.DependencyResolutionResult;
import org.apache.maven.project.MavenProject;
import org.apache.maven.project.ProjectDependenciesResolver;
import org.eclipse.aether.graph.DependencyFilter;
import org.eclipse.aether.graph.DependencyNode;
import org.eclipse.aether.util.filter.AndDependencyFilter;
import org.eclipse.aether.util.filter.ScopeDependencyFilter;
import javax.inject.Inject;
import java.util.*;
@Mojo( name = "test-mojo", requiresDependencyResolution = ResolutionScope.RUNTIME)
public class TestMojo extends AbstractMojo {
@Parameter(defaultValue = "${project}", readonly = true, required = true)
private MavenProject project;
@Parameter(defaultValue = "${session}", readonly = true, required = true)
private MavenSession session;
@Inject
private ProjectDependenciesResolver dependenciesResolver;
public void execute() throws MojoExecutionException {
try {
Collection<String> scopesToResolve = new HashSet<>();
scopesToResolve.add("compile");
scopesToResolve.add("provided");
scopesToResolve.add("runtime");
scopesToResolve.add("system");
scopesToResolve.add("test");
Collection<String> scopesToCollect = new HashSet<>();
scopesToCollect.add("compile");
scopesToCollect.add("provided");
scopesToCollect.add("runtime");
scopesToCollect.add("system");
scopesToCollect.add("test");
Collection<Artifact> projectArtifacts = new HashSet<>();
projectArtifacts.add(project.getArtifact());
DependencyFilter collectionFilter = new ScopeDependencyFilter( null, negate( scopesToCollect ) );
DependencyFilter resolutionFilter = new ScopeDependencyFilter( null, negate( scopesToResolve ) );
resolutionFilter = AndDependencyFilter.newInstance( collectionFilter, resolutionFilter );
resolutionFilter = AndDependencyFilter.newInstance( resolutionFilter, new ReactorDependencyFilter( projectArtifacts ) );
DefaultDependencyResolutionRequest request =
new DefaultDependencyResolutionRequest( project, session.getRepositorySession() );
request.setResolutionFilter( resolutionFilter );
DependencyResolutionResult result = dependenciesResolver.resolve( request );
// Here is your dependency gragh, you can do whatever you want with it.
List<DependencyNode> children = result.getDependencyGraph().getChildren();
List<DependencyNode> grandChildren = children.get(0).getChildren();
} catch (Exception e) {
e.printStackTrace();
throw new MojoExecutionException(e.getMessage());
}
}
private Collection<String> negate( Collection<String> scopes )
{
Collection<String> result = new HashSet<>();
Collections.addAll( result, "system", "compile", "provided", "runtime", "test" );
for ( String scope : scopes )
{
if ( "compile".equals( scope ) )
{
result.remove( "compile" );
result.remove( "system" );
result.remove( "provided" );
}
else if ( "runtime".equals( scope ) )
{
result.remove( "compile" );
result.remove( "runtime" );
}
else if ( "compile+runtime".equals( scope ) )
{
result.remove( "compile" );
result.remove( "system" );
result.remove( "provided" );
result.remove( "runtime" );
}
else if ( "runtime+system".equals( scope ) )
{
result.remove( "compile" );
result.remove( "system" );
result.remove( "runtime" );
}
else if ( "test".equals( scope ) )
{
result.clear();
}
}
return result;
}
private static class ReactorDependencyFilter
implements DependencyFilter
{
private Set<String> keys = new HashSet<>();
ReactorDependencyFilter( Collection<Artifact> artifacts )
{
for ( Artifact artifact : artifacts )
{
String key = ArtifactUtils.key( artifact );
keys.add( key );
}
}
public boolean accept(DependencyNode node, List<DependencyNode> parents )
{
org.eclipse.aether.graph.Dependency dependency = node.getDependency();
if ( dependency != null )
{
org.eclipse.aether.artifact.Artifact a = dependency.getArtifact();
String key = ArtifactUtils.key( a.getGroupId(), a.getArtifactId(), a.getVersion() );
return !keys.contains( key );
}
return false;
}
}
}
另外,请注意您需要添加一些依赖项才能使其正常工作。这是我的。
<dependencies>
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-plugin-api</artifactId>
<version>3.6.0</version>
</dependency>
<dependency>
<groupId>org.apache.maven.plugin-tools</groupId>
<artifactId>maven-plugin-annotations</artifactId>
<version>3.6.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-project</artifactId>
<version>2.2.1</version>
</dependency>
<dependency>
<groupId>org.apache.maven.shared</groupId>
<artifactId>maven-common-artifact-filters</artifactId>
<version>3.0.1</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.2</version>
</dependency>
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-core</artifactId>
<version>3.5.4</version>
</dependency>
</dependencies>