Java 类org.springframework.beans.factory.xml.DefaultDocumentLoader 实例源码

/**
 * 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));
    }
}

/**
 * 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));
    }
}

/**
 * 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() + "]");

}

/**
 * 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() + "]");

}

/**
 * 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;
}