Java SAXSource.getXMLReader方法代码示例

import javax.xml.transform.sax.SAXSource; //导入方法依赖的package包/类
@Override
public <T> JAXBElement<T> unmarshal( Source source, Class<T> expectedType ) throws JAXBException {
    if (source instanceof SAXSource) {
        SAXSource ss = (SAXSource) source;

        XMLReader locReader = ss.getXMLReader();
        if (locReader == null) {
            locReader = getXMLReader();
        }

        return unmarshal(locReader, ss.getInputSource(), expectedType);
    }
    if (source instanceof StreamSource) {
        return unmarshal(getXMLReader(), streamSourceToInputSource((StreamSource) source), expectedType);
    }
    if (source instanceof DOMSource) {
        return unmarshal(((DOMSource) source).getNode(), expectedType);
    }

    // we don't handle other types of Source
    throw new IllegalArgumentException();
}
 

import javax.xml.transform.sax.SAXSource; //导入方法依赖的package包/类
public Object unmarshal0( Source source, JaxBeanInfo expectedType ) throws JAXBException {
    if (source instanceof SAXSource) {
        SAXSource ss = (SAXSource) source;

        XMLReader locReader = ss.getXMLReader();
        if (locReader == null) {
            locReader = getXMLReader();
        }

        return unmarshal0(locReader, ss.getInputSource(), expectedType);
    }
    if (source instanceof StreamSource) {
        return unmarshal0(getXMLReader(), streamSourceToInputSource((StreamSource) source), expectedType);
    }
    if (source instanceof DOMSource) {
        return unmarshal0(((DOMSource) source).getNode(), expectedType);
    }

    // we don't handle other types of Source
    throw new IllegalArgumentException();
}
 

import javax.xml.transform.sax.SAXSource; //导入方法依赖的package包/类
private Object unmarshal( SAXSource source ) throws JAXBException {

        XMLReader r = source.getXMLReader();
        if( r == null )
            r = getXMLReader();

        return unmarshal( r, source.getInputSource() );
    }
 

import javax.xml.transform.sax.SAXSource; //导入方法依赖的package包/类
/**
 * Establish an entityResolver for newly resolved URIs.
 * <p>
 * This is called from the URIResolver to set an EntityResolver on the SAX
 * parser to be used for new XML documents that are encountered as a result
 * of the document() function, xsl:import, or xsl:include. This is done
 * because the XSLT processor calls out to the SAXParserFactory itself to
 * create a new SAXParser to parse the new document. The new parser does not
 * automatically inherit the EntityResolver of the original (although
 * arguably it should). Quote from JAXP specification on Class
 * SAXTransformerFactory:
 * <p>
 * {@code If an application wants to set the ErrorHandler or EntityResolver
 * for an XMLReader used during a transformation, it should use a URIResolver
 * to return the SAXSource which provides (with getXMLReader) a reference to
 * the XMLReader}
 *
 */
private void setEntityResolver(SAXSource source) {
    XMLReader reader = source.getXMLReader();
    if (reader == null) {
        SAXParserFactory spFactory = new SAXParserFactoryImpl();
        spFactory.setNamespaceAware(true);
        try {
            reader = spFactory.newSAXParser().getXMLReader();
        } catch (ParserConfigurationException | SAXException ex) {
            CatalogMessages.reportRunTimeError(CatalogMessages.ERR_PARSER_CONF, ex);
        }
    }
    if (entityResolver != null) {
        entityResolver = new CatalogResolverImpl(catalog);
    }
    reader.setEntityResolver(entityResolver);
    source.setXMLReader(reader);
}