mvn依赖：离线-如何在命令行上或根本上设置参数

Question

我想下载除我自己的依赖项之外的所有内容，我还没有编译这些依赖项。我想我需要的是excludegroupId，但是如何设置它，或者在https://maven.apache.org/plugins/maven-dependency-plugin/go-offline-mojo.html在命令行上？

我试过这个

mvn dependency:go-offline -DexcludeGroupIds=com.example

我也试着在pom中设置它们。xml和设置。xml，无法使其产生任何效果。

Answer 1

通过检查maven dependency插件的代码，我很确定这是一个bug，因为过滤器没有被应用于离线。以下是解决离线mojo实现（版本3.1.3-SNAPSHOT）中依赖关系的代码：

protected Set<Artifact> resolveDependencyArtifacts()
        throws DependencyResolverException
{
    final Collection<Dependency> dependencies = getProject().getDependencies();
    final Set<DependableCoordinate> dependableCoordinates = new HashSet<>();

    final ProjectBuildingRequest buildingRequest = newResolveArtifactProjectBuildingRequest();

    for ( Dependency dependency : dependencies )
    {
        dependableCoordinates.add( createDependendableCoordinateFromDependency( dependency ) );
    }

    return resolveDependableCoordinate( buildingRequest, dependableCoordinates, "dependencies" );
}

在契约中，下面是解析解决mojo依赖关系的代码：

@Override
protected void doExecute()
    throws MojoExecutionException
{
    // get sets of dependencies
    results = this.getDependencySets( false, includeParents );

    ...
}

AbstractDependencyFilterMojo：

protected DependencyStatusSets getDependencySets( boolean stopOnFailure, boolean includeParents )
    throws MojoExecutionException
{
    // add filters in well known order, least specific to most specific
    FilterArtifacts filter = new FilterArtifacts();

    filter.addFilter( new ProjectTransitivityFilter( getProject().getDependencyArtifacts(),
                                                     this.excludeTransitive ) );

    filter.addFilter( new ScopeFilter( DependencyUtil.cleanToBeTokenizedString( this.includeScope ),
                                       DependencyUtil.cleanToBeTokenizedString( this.excludeScope ) ) );

    filter.addFilter( new TypeFilter( DependencyUtil.cleanToBeTokenizedString( this.includeTypes ),
                                      DependencyUtil.cleanToBeTokenizedString( this.excludeTypes ) ) );

    filter.addFilter( new ClassifierFilter( DependencyUtil.cleanToBeTokenizedString( this.includeClassifiers ),
                                            DependencyUtil.cleanToBeTokenizedString( this.excludeClassifiers ) ) );

    filter.addFilter( new GroupIdFilter( DependencyUtil.cleanToBeTokenizedString( this.includeGroupIds ),
                                         DependencyUtil.cleanToBeTokenizedString( this.excludeGroupIds ) ) );

    filter.addFilter( new ArtifactIdFilter( DependencyUtil.cleanToBeTokenizedString( this.includeArtifactIds ),
                                            DependencyUtil.cleanToBeTokenizedString( this.excludeArtifactIds ) ) );

    ...

很明显，在解决依赖关系时，离线的代码没有应用这些过滤器。所以我插入了一张项目票来确认：https://issues.apache.org/jira/browse/MDEP-725