import org.springframework.beans.factory.xml.DefaultDocumentLoader; //导入依赖的package包/类
/**
 * Returns the <code>localRepository</code> settings as indicated by the
 * <code>settings.xml</code> file.
 * 
 * @return local repository as indicated by a Maven settings.xml file
 */
String getMavenSettingsLocalRepository(Resource m2Settings) {
	// no file found, return null to continue the discovery process
	if (!m2Settings.exists()) {
		return null;
       }

	try {
		DocumentLoader docLoader = new DefaultDocumentLoader();
		Document document = docLoader.loadDocument(new InputSource(m2Settings.getInputStream()), null, null,
			XmlValidationModeDetector.VALIDATION_NONE, false);

		return (DomUtils.getChildElementValueByTagName(document.getDocumentElement(), LOCAL_REPOSITORY_ELEM));
	} catch (Exception ex) {
		throw new RuntimeException(new ParserConfigurationException("error parsing resource=" + m2Settings).initCause(ex));
	}
}
 

import org.springframework.beans.factory.xml.DefaultDocumentLoader; //导入依赖的package包/类
/**
 * Returns the <code>localRepository</code> settings as indicated by the
 * <code>settings.xml</code> file.
 * 
 * @return local repository as indicated by a Maven settings.xml file
 */
String getMavenSettingsLocalRepository(Resource m2Settings) {
	// no file found, return null to continue the discovery process
	if (!m2Settings.exists())
		return null;

	try {
		DocumentLoader docLoader = new DefaultDocumentLoader();
		Document document = docLoader.loadDocument(new InputSource(m2Settings.getInputStream()), null, null,
			XmlValidationModeDetector.VALIDATION_NONE, false);

		return (DomUtils.getChildElementValueByTagName(document.getDocumentElement(), LOCAL_REPOSITORY_ELEM));
	}
	catch (Exception ex) {
		throw (RuntimeException) new RuntimeException(new ParserConfigurationException("error parsing resource="
				+ m2Settings).initCause(ex));
	}
}
 

import org.springframework.beans.factory.xml.DefaultDocumentLoader; //导入依赖的package包/类
/**
 * Returns the <tt>groupId</tt> setting in a <tt>pom.xml</tt> file.
 * 
 * @return a <tt>pom.xml</tt> <tt>groupId</tt>.
 */
String getGroupIdFromPom(Resource pomXml) {
	try {
		DocumentLoader docLoader = new DefaultDocumentLoader();
		Document document = docLoader.loadDocument(new InputSource(pomXml.getInputStream()), null, null,
			XmlValidationModeDetector.VALIDATION_NONE, false);

		String groupId = DomUtils.getChildElementValueByTagName(document.getDocumentElement(), GROUP_ID_ELEM);
		// no groupId specified, try the parent definition
		if (groupId == null) {
			if (log.isTraceEnabled())
				log.trace("No groupId defined; checking for the parent definition");
			Element parent = DomUtils.getChildElementByTagName(document.getDocumentElement(), "parent");
			if (parent != null)
				return DomUtils.getChildElementValueByTagName(parent, GROUP_ID_ELEM);
		}
		else {
			return groupId;
		}
	}
	catch (Exception ex) {
		throw (RuntimeException) new RuntimeException(new ParserConfigurationException("error parsing resource="
				+ pomXml).initCause(ex));
	}

	throw new IllegalArgumentException("no groupId or parent/groupId defined by resource ["
			+ pomXml.getDescription() + "]");

}
 

import org.springframework.beans.factory.xml.DefaultDocumentLoader; //导入依赖的package包/类
/**
 * Loads the <code>Document</code> from the specified
 * {@link org.springframework.core.io.Resource Resource}.
 * 
 * @param res
 *            the resource to load the {@link Document} from
 * 
 * @return the <code>Document</code> specified by the passed
 *         <code>Resource</code>
 */
protected Document loadDocument(
		final org.springframework.core.io.Resource res) {

	// get the resource as encoded one
	final EncodedResource encRes = new EncodedResource(res);

	// read the XML document and replace the placeholders
	InputStream inputStream = null;
	InputSource inputSource = null;
	Document doc = null;
	try {
		inputStream = encRes.getResource().getInputStream();
		inputSource = new InputSource(inputStream);
		if (encRes.getEncoding() != null) {
			inputSource.setEncoding(encRes.getEncoding());
		}

		// get the Document
		final DefaultDocumentLoader loader = new DefaultDocumentLoader();
		doc = loader.loadDocument(inputSource, null, null,
				XmlValidationModeDetector.VALIDATION_NONE, false);
	} catch (final Exception e) {

		// log it
		if (LOG.isWarnEnabled()) {
			LOG.warn(
					"Unable to parse the passed ByteArrayResource '"
							+ res.getDescription() + "'.", e);
		}

		throw new IllegalArgumentException(
				"The passed resource contains an invalid document.", e);
	} finally {

		// close the streams
		Streams.closeIO(inputSource);
		Streams.closeIO(inputStream);
	}

	return doc;
}