Příklad 5. StAX - přístup kurzorem
import java.io.*;
import javax.xml.stream.*;
public class ParseByIterator {
public static void main(String[] args) throws FileNotFoundException, XMLStreamException {
// Use reference implementation
System.setProperty( "javax.xml.stream.XMLInputFactory", "com.bea.xml.stream.MXParserFactory"); // Create an input factory
XMLInputFactory xmlif = XMLInputFactory.newInstance(); // Create an
XML stream reader XMLStreamReader xmlr = xmlif.createXMLStreamReader(new FileReader("somefile.xml")); // Loop over XML input stream and process events
while (xmlr.hasNext()) {
processEvent(xmlr);
xmlr.next();
}
}
/**
* Process a single event
* @param xmlr - the XML stream reader
*/
private static void processEvent(XMLStreamReader xmlr) {
switch (xmlr.getEventType()) {
case XMLStreamConstants.START_ELEMENT :
processName(xmlr);
processAttributes(xmlr);
break;
case XMLStreamConstants.END_ELEMENT :
processName(xmlr);
break;
case XMLStreamConstants.SPACE :
case XMLStreamConstants.CHARACTERS :
int start = xmlr.getTextStart();
int length = xmlr.getTextLength();
String text = new String(xmlr.getTextCharacters(), start, length);
break;
case XMLStreamConstants.COMMENT :
case XMLStreamConstants.PROCESSING_INSTRUCTION :
if (xmlr.hasText()) {
String piOrComment = xmlr.getText();
}
break;
}
}
private static void processName(XMLStreamReader xmlr) {
if (xmlr.hasName()) {
String prefix = xmlr.getPrefix();
String uri = xmlr.getNamespaceURI();
String localName = xmlr.getLocalName();
}
}
private static void processAttributes(XMLStreamReader xmlr) {
for (int i = 0; i < xmlr.getAttributeCount(); i++) processAttribute(xmlr, i);
}
private static void processAttribute(XMLStreamReader xmlr, int index) {
String prefix = xmlr.getAttributePrefix(index);
String namespace = xmlr.getAttributeNamespace(index);
String localName = xmlr.getAttributeName(index);
String value = xmlr.getAttributeValue(index);
}
}
Poznámka | |
---|---|
příklad převzat z Tip: Use XML streaming parsers (IBM DeveloperWorks, sekce XML). |