PomUtil { public static Node getPlugin(Document document, String groupId, String artifactId) { Preconditions.checkArgument(hasChildNode(document, NODE_NAME_PROJECT), "The document doesn't seem to be a POM model, project element is missing."); Node pluginsNode = getOrCreatePluginsNode(document, false); if (pluginsNode != null) { NodeList plugins = pluginsNode.getChildNodes(); for (int i = 0; i < plugins.getLength(); i++) { Node plugin = plugins.item(i); if (Objects.equal(NODE_NAME_PLUGIN, plugin.getNodeName())) { NodeList pluginSettings = plugin.getChildNodes(); boolean gidMatches = false; boolean aidMatches = false; for (int j = 0; j < pluginSettings.getLength(); j++) { Node setting = pluginSettings.item(j); if (Objects.equal(NODE_NAME_GROUP_ID, setting.getNodeName())) { if (Objects.equal(groupId, setting.getTextContent())) { gidMatches = true; } } else if (Objects.equal(NODE_NAME_ARTIFACT_ID, setting.getNodeName())) { if (Objects.equal(artifactId, setting.getTextContent())) { aidMatches = true; } } if (gidMatches && aidMatches) { return plugin; } } } } } return null; } private  PomUtil(); static final Optional<Document> parsePOM(MavenProject project); static final Optional<Document> parsePOM(File pomFile); static final Document parsePOM(InputStream in); static final void writePOM(Document document, MavenProject project); static final void writePOM(Document document, OutputStream out, boolean closeOut); static void setProjectVersion(Model model, Document document, String newVersion); static void setParentVersion(Model model, Document document, String newParentVersion); static void setDependencyVersion(Dependency dependency, Document document, String dependenciesPath,
      String newVersion); static Node getOrCreateBuildNode(Document document, boolean createOnDemand); static Node getOrCreatePluginsNode(Document document, boolean createOnDemand); static Node getPlugin(Document document, String groupId, String artifactId); static Node createPlugin(Document document, String groupId, String artifactId, String version); static Node createPluginExecution(Node plugin, String id, Optional<String> phase, String... goals); static Node getOrCreateScmNode(Document document, boolean createOnDemand); static void setNodeTextContent(Node parentNode, String nodeName, String content, boolean createOnDemand); static void deleteNode(Node parentNode, String nodeName); static boolean hasChildNode(Node parentNode, String nodeName); static Optional<String> getChildNodeTextContent(Node parentNode, String nodeName); static final String ARTIFACT_TYPE_JAR; static final String ARTIFACT_TYPE_POM; static final String VERSION_QUALIFIER_SNAPSHOT; static final String VERSION_LATEST; static final String NODE_NAME_ARTIFACT_ID; static final String NODE_NAME_BUILD; static final String NODE_NAME_EXECUTION; static final String NODE_NAME_EXECUTIONS; static final String NODE_NAME_GOAL; static final String NODE_NAME_GOALS; static final String NODE_NAME_GROUP_ID; static final String NODE_NAME_ID; static final String NODE_NAME_PARENT; static final String NODE_NAME_PHASE; static final String NODE_NAME_PLUGIN; static final String NODE_NAME_PLUGINS; static final String NODE_NAME_PROJECT; static final String NODE_NAME_SCM; static final String NODE_NAME_SCM_CONNECTION; static final String NODE_NAME_SCM_DEV_CONNECTION; static final String NODE_NAME_SCM_TAG; static final String NODE_NAME_SCM_URL; static final String NODE_NAME_VERSION; static final String NODE_NAME_DEPENDENCY; static final String NODE_NAME_DEPENDENCIES; static final String NODE_NAME_DEPENDENCY_MANAGEMENT; }
@Test public void testGetPlugin() throws Exception { String pluginsNodePath = "project/build/plugins"; String gid = "org.apache.maven.plugins"; String aid = "maven-compiler-plugin"; URL url = getClass().getResource(getClass().getSimpleName() + "/pom1.xml"); File source; try { source = new File(url.toURI()); } catch (URISyntaxException e) { source = new File(url.getPath()); } DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder(); Document document = builder.parse(source); Assert.assertNull(getNode(document, pluginsNodePath)); Assert.assertNull(PomUtil.getPlugin(document, gid, aid)); url = getClass().getResource(getClass().getSimpleName() + "/pom3.xml"); try { source = new File(url.toURI()); } catch (URISyntaxException e) { source = new File(url.getPath()); } builder = DocumentBuilderFactory.newInstance().newDocumentBuilder(); document = builder.parse(source); Assert.assertNull(getNode(document, pluginsNodePath)); Assert.assertNull(PomUtil.getPlugin(document, gid, aid)); url = getClass().getResource(getClass().getSimpleName() + "/pom4.xml"); try { source = new File(url.toURI()); } catch (URISyntaxException e) { source = new File(url.getPath()); } builder = DocumentBuilderFactory.newInstance().newDocumentBuilder(); document = builder.parse(source); Node plugins = getNode(document, pluginsNodePath); Assert.assertNotNull(plugins); Node plugin = null; for (int i = 0; i < plugins.getChildNodes().getLength(); i++) { Node child = plugins.getChildNodes().item(i); if (Objects.equal(PomUtil.NODE_NAME_PLUGIN, child.getNodeName())) { if (Objects.equal(gid, getNode(child, PomUtil.NODE_NAME_GROUP_ID).getTextContent()) && Objects.equal(aid, getNode(child, PomUtil.NODE_NAME_ARTIFACT_ID).getTextContent())) { plugin = child; break; } } } Assert.assertNotNull(plugin); Node pluginFromUtil = PomUtil.getPlugin(document, gid, aid); Assert.assertNotNull(pluginFromUtil); Assert.assertEquals(gid, getNode(pluginFromUtil, PomUtil.NODE_NAME_GROUP_ID).getTextContent()); Assert.assertEquals(aid, getNode(pluginFromUtil, PomUtil.NODE_NAME_ARTIFACT_ID).getTextContent()); }