Beispiel #1
0
 /**
  * This creates an empty <code>Document</code> object based on a specific parser implementation.
  *
  * @return <code>Document</code> - created DOM Document.
  * @throws JDOMException when errors occur.
  */
 public Document createDocument() throws JDOMException {
   try {
     return (Document) Class.forName("org.apache.xerces.dom.DocumentImpl").newInstance();
   } catch (Exception e) {
     throw new JDOMException(
         e.getClass().getName() + ": " + e.getMessage() + " when creating document", e);
   }
 }
Beispiel #2
0
  /**
   * This creates a new <code>{@link Document}</code> from an existing <code>InputStream</code> by
   * letting a DOM parser handle parsing using the supplied stream.
   *
   * @param in <code>InputStream</code> to parse.
   * @param validate <code>boolean</code> to indicate if validation should occur.
   * @return <code>Document</code> - instance ready for use.
   * @throws IOException when I/O error occurs.
   * @throws JDOMException when errors occur in parsing.
   */
  public Document getDocument(InputStream in, boolean validate) throws IOException, JDOMException {

    try {
      // Load the parser class
      Class parserClass = Class.forName("org.apache.xerces.parsers.DOMParser");
      Object parser = parserClass.newInstance();

      // Set validation
      Method setFeature =
          parserClass.getMethod("setFeature", new Class[] {java.lang.String.class, boolean.class});
      setFeature.invoke(
          parser, new Object[] {"http://xml.org/sax/features/validation", new Boolean(validate)});

      // Set namespaces true
      setFeature.invoke(
          parser, new Object[] {"http://xml.org/sax/features/namespaces", new Boolean(true)});

      // Set the error handler
      if (validate) {
        Method setErrorHandler =
            parserClass.getMethod("setErrorHandler", new Class[] {ErrorHandler.class});
        setErrorHandler.invoke(parser, new Object[] {new BuilderErrorHandler()});
      }

      // Parse the document
      Method parse = parserClass.getMethod("parse", new Class[] {org.xml.sax.InputSource.class});
      parse.invoke(parser, new Object[] {new InputSource(in)});

      // Get the Document object
      Method getDocument = parserClass.getMethod("getDocument", null);
      Document doc = (Document) getDocument.invoke(parser, null);

      return doc;
    } catch (InvocationTargetException e) {
      Throwable targetException = e.getTargetException();
      if (targetException instanceof org.xml.sax.SAXParseException) {
        SAXParseException parseException = (SAXParseException) targetException;
        throw new JDOMException(
            "Error on line "
                + parseException.getLineNumber()
                + " of XML document: "
                + parseException.getMessage(),
            e);
      } else if (targetException instanceof IOException) {
        IOException ioException = (IOException) targetException;
        throw ioException;
      } else {
        throw new JDOMException(targetException.getMessage(), e);
      }
    } catch (Exception e) {
      throw new JDOMException(e.getClass().getName() + ": " + e.getMessage(), e);
    }
  }