Java XMLEvent.getLocation方法代碼示例

import javax.xml.stream.events.XMLEvent; //導入方法依賴的package包/類
@Override
public final XMLEvent nextTag() throws XMLStreamException {
	XMLEvent event = this.nextEvent();
	while ((event.isCharacters() && event.asCharacters().isWhiteSpace())
			|| event.isProcessingInstruction()
			|| event.getEventType() == XMLStreamConstants.COMMENT) {

		event = this.nextEvent();
	}

	if (!event.isStartElement()  && event.isEndElement()) {
		throw new XMLStreamException("Unexpected event type '" + XMLStreamConstantsUtils.getEventName(event.getEventType()) + "' encountered. Found event: " + event, event.getLocation());
	}

	return event;
}
 

import javax.xml.stream.events.XMLEvent; //導入方法依賴的package包/類
@Test
public void testLocation() {
    String XML = "<?xml version='1.0' ?>" + "<!DOCTYPE root [\n" + "<!ENTITY intEnt 'internal'>\n" + "<!ENTITY extParsedEnt SYSTEM 'url:dummy'>\n"
            + "<!NOTATION notation PUBLIC 'notation-public-id'>\n" + "<!NOTATION notation2 SYSTEM 'url:dummy'>\n"
            + "<!ENTITY extUnparsedEnt SYSTEM 'url:dummy2' NDATA notation>\n" + "]>\n" + "<root />";

    try {
        XMLEventReader er = getReader(XML);
        XMLEvent evt = er.nextEvent(); // StartDocument
        Location loc1 = evt.getLocation();
        System.out.println("Location 1: " + loc1.getLineNumber() + "," + loc1.getColumnNumber());
        evt = er.nextEvent(); // DTD
        // loc1 should not change so its line number should still be 1
        Assert.assertTrue(loc1.getLineNumber() == 1);
        Location loc2 = evt.getLocation();
        System.out.println("Location 2: " + loc2.getLineNumber() + "," + loc2.getColumnNumber());
        evt = er.nextEvent(); // root
        System.out.println("Location 1: " + loc1.getLineNumber() + "," + loc1.getColumnNumber());
        Assert.assertTrue(loc1.getLineNumber() == 1);
        Assert.assertTrue(loc2.getLineNumber() == 7);
    } catch (Exception e) {
        Assert.fail(e.getMessage());
    }
}
 

import javax.xml.stream.events.XMLEvent; //導入方法依賴的package包/類
private Map<URI, Policy> unmarshal(final XMLEventReader reader, final StartElement parentElement) throws PolicyException {
    XMLEvent event = null;
    while (reader.hasNext()) {
        try {
            event = reader.peek();
            switch (event.getEventType()) {
                case XMLStreamConstants.START_DOCUMENT:
                case XMLStreamConstants.COMMENT:
                    reader.nextEvent();
                    break;

                case XMLStreamConstants.CHARACTERS:
                    processCharacters(event.asCharacters(), parentElement, map);
                    reader.nextEvent();
                    break;

                case XMLStreamConstants.END_ELEMENT:
                    processEndTag(event.asEndElement(), parentElement);
                    reader.nextEvent();
                    return map;

                case XMLStreamConstants.START_ELEMENT:
                    final StartElement element = event.asStartElement();
                    processStartTag(element, parentElement, reader, map);
                    break;

                case XMLStreamConstants.END_DOCUMENT:
                    return map;

                default:
                    throw LOGGER.logSevereException(new PolicyException(LocalizationMessages.WSP_0087_UNKNOWN_EVENT(event)));
            }
        } catch (XMLStreamException e) {
            final Location location = event == null ? null : event.getLocation();
            throw LOGGER.logSevereException(new PolicyException(LocalizationMessages.WSP_0088_FAILED_PARSE(location)), e);
        }
    }
    return map;
}
 

import javax.xml.stream.events.XMLEvent; //導入方法依賴的package包/類
/** Skips any insignificant space events until a START_ELEMENT or
 * END_ELEMENT is reached. If anything other than space characters are
 * encountered, an exception is thrown. This method should
 * be used when processing element-only content because
 * the parser is not able to recognize ignorable whitespace if
 * the DTD is missing or not interpreted.
 * @throws XMLStreamException if anything other than space characters are encountered
 */
public XMLEvent nextTag() throws XMLStreamException {
    //its really a pain if there is peeked event before calling nextTag()
    if(fPeekedEvent != null){
        //check the peeked event first.
        XMLEvent event = fPeekedEvent;
        fPeekedEvent = null ;
        int eventType = event.getEventType();
        //if peeked event is whitespace move to the next event
        //if peeked event is PI or COMMENT move to the next event
        if( (event.isCharacters() && event.asCharacters().isWhiteSpace())
        || eventType == XMLStreamConstants.PROCESSING_INSTRUCTION
        || eventType == XMLStreamConstants.COMMENT
        || eventType == XMLStreamConstants.START_DOCUMENT){
            event = nextEvent();
            eventType = event.getEventType();
        }

        //we have to have the while loop because there can be many PI or comment event in sucession
        while((event.isCharacters() && event.asCharacters().isWhiteSpace())
        || eventType == XMLStreamConstants.PROCESSING_INSTRUCTION
        || eventType == XMLStreamConstants.COMMENT){

            event = nextEvent();
            eventType = event.getEventType();
        }

        if (eventType != XMLStreamConstants.START_ELEMENT && eventType != XMLStreamConstants.END_ELEMENT) {
            throw new XMLStreamException("expected start or end tag", event.getLocation());
        }
        return event;
    }

    //if there is no peeked event -- delegate the work of getting next event to fXMLReader
    fXMLReader.nextTag();
    return (fLastEvent = fXMLEventAllocator.allocate(fXMLReader));
}
 

import javax.xml.stream.events.XMLEvent; //導入方法依賴的package包/類
@Override
public final String getElementText() throws XMLStreamException {
	XMLEvent event = this.previousEvent;
	if (event == null) {
		throw new XMLStreamException("Must be on START_ELEMENT to read next text, element was null");
	}
	if (!event.isStartElement()) {
		throw new XMLStreamException("Must be on START_ELEMENT to read next text", event.getLocation());
	}

	final StringBuilder text = new StringBuilder();
	while (!event.isEndDocument()) {
		switch (event.getEventType()) {
			case XMLStreamConstants.CHARACTERS:
			case XMLStreamConstants.SPACE:
			case XMLStreamConstants.CDATA: {
				final Characters characters = event.asCharacters();
				text.append(characters.getData());
				break;
			}
			case XMLStreamConstants.ENTITY_REFERENCE: {
				final EntityReference entityReference = (EntityReference)event;
				final EntityDeclaration declaration = entityReference.getDeclaration();
				text.append(declaration.getReplacementText());
				break;
			}
			case XMLStreamConstants.COMMENT:
			case XMLStreamConstants.PROCESSING_INSTRUCTION: {
				//Ignore
				break;
			}
			default: {
				throw new XMLStreamException("Unexpected event type '" + XMLStreamConstantsUtils.getEventName(event.getEventType()) + "' encountered. Found event: " + event, event.getLocation());
			}
		}

		event = this.nextEvent();
	}

	return text.toString();
}