Document parseDocument(String filename) throws Exception {
FileReader reader = new FileReader(filename);
String firstLine = new BufferedReader(reader).readLine();
reader.close();
Document document = null;
if (firstLine.startsWith("<?xml")) {
System.err.println("XML detected; using default XML parser.");
} else {
try {
Class nekoParserClass = Class.forName("org.cyberneko.html.parsers.DOMParser");
Object parser = nekoParserClass.newInstance();
Method parse = nekoParserClass.getMethod("parse", new Class[] {String.class});
Method getDocument = nekoParserClass.getMethod("getDocument", new Class[0]);
parse.invoke(parser, filename);
document = (Document) getDocument.invoke(parser);
} catch (Exception e) {
System.err.println("NekoHTML HTML parser not found; HTML4 support disabled.");
}
}
if (document == null) {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
try { // http://www.w3.org/blog/systeam/2008/02/08/w3c_s_excessive_dtd_traffic
factory.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
} catch (ParserConfigurationException e) {
System.err.println("Warning: Could not disable external DTD loading");
}
DocumentBuilder builder = factory.newDocumentBuilder();
document = builder.parse(filename);
}
return document;
}
static {
try {
dbf.setNamespaceAware(true);
db = dbf.newDocumentBuilder();
xpath.setNamespaceContext(
new NamespaceContext() {
@Override
public Iterator<String> getPrefixes(String namespaceURI) {
return Arrays.asList("md").iterator();
}
@Override
public String getPrefix(String namespaceURI) {
return "md";
}
@Override
public String getNamespaceURI(String prefix) {
return "http://www.osgi.org/xmlns/metatype/v1.1.0";
}
});
} catch (ParserConfigurationException e) {
e.printStackTrace();
throw new ExceptionInInitializerError(e);
}
}
/**
* Reads an XML document from an input source and copies its values into the specified object
*
* @param ob The object to receive the values
* @param source The location of the XML document
* @throws IOException If there is an error reading the document
*/
public void readObject(Object ob, InputSource source) throws IOException {
try {
// Create a document builder to read the document
DocumentBuilder builder = factory.newDocumentBuilder();
// Read the document
Document doc = builder.parse(source);
// Get the root element
Element element = doc.getDocumentElement();
// Copy the root element into the bean
readObject(ob, element);
} catch (SAXException exc) {
throw new IOException("Error parsing XML document: " + exc.toString());
} catch (ParserConfigurationException exc) {
throw new IOException("Error parsing XML document: " + exc.toString());
}
}
/** Forward to real factory, set error handler */
public DocumentBuilder newDocumentBuilder() throws ParserConfigurationException {
DocumentBuilder db = fact.newDocumentBuilder();
log.debug3("Created builder: " + db);
db.setErrorHandler(new MyErrorHandler());
return db;
}