import org.apache.maven.model.building.DefaultModelBuilder; //导入依赖的package包/类
private void updateDependencyResolutionContext(
		List<Map<String, String>> bomDependencies) {
	URI[] uris = Grape.getInstance().resolve(null,
			bomDependencies.toArray(new Map[bomDependencies.size()]));
	DefaultModelBuilder modelBuilder = new DefaultModelBuilderFactory().newInstance();
	for (URI uri : uris) {
		try {
			DefaultModelBuildingRequest request = new DefaultModelBuildingRequest();
			request.setModelResolver(new GrapeModelResolver());
			request.setModelSource(new UrlModelSource(uri.toURL()));
			request.setSystemProperties(System.getProperties());
			Model model = modelBuilder.build(request).getEffectiveModel();
			this.resolutionContext.addDependencyManagement(
					new MavenModelDependencyManagement(model));
		}
		catch (Exception ex) {
			throw new IllegalStateException("Failed to build model for '" + uri
					+ "'. Is it a valid Maven bom?", ex);
		}
	}
}
 

import org.apache.maven.model.building.DefaultModelBuilder; //导入依赖的package包/类
/**
 *
 * TODO: This does not currently work.
 *
 */
@SuppressWarnings("unused")
private static Model complexModelBuilding(File file) throws Exception {

    ModelBuilder builder = new DefaultModelBuilder();
    ModelBuildingRequest request = new DefaultModelBuildingRequest();
    request.setProcessPlugins(false);
    request.setPomFile(file);
    // request.setModelResolver(new ModelResolver() {});
    request.setValidationLevel(ModelBuildingRequest.VALIDATION_LEVEL_MINIMAL);

    //noinspection UnnecessaryLocalVariable
    Model model = builder.build(request).getEffectiveModel();
    return model;
}