Java/JDK 6/Streaming XML Parser

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Версия от 06:12, 1 июня 2010; Admin (обсуждение | вклад) (1 версия)
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Catch XMLStreamException

 
import java.io.FileInputStream;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.events.XMLEvent;

class StaxCursorTest {
    public static void main(String[] args) throws Exception {
        String filename = "yourXML.xml";
        XMLInputFactory xmlif = null;
        xmlif = XMLInputFactory.newInstance();
        xmlif.setProperty(XMLInputFactory.IS_REPLACING_ENTITY_REFERENCES,Boolean.TRUE);
        xmlif.setProperty(XMLInputFactory.IS_SUPPORTING_EXTERNAL_ENTITIES,Boolean.FALSE);
        xmlif.setProperty(XMLInputFactory.IS_COALESCING, Boolean.FALSE);
        try {
            XMLStreamReader xmlr = xmlif.createXMLStreamReader(filename,new FileInputStream(filename));
            int eventType = xmlr.getEventType();
            printStartDocument(xmlr);
            while (xmlr.hasNext()) {
                eventType = xmlr.next();
                printStartElement(xmlr);
                printEndElement(xmlr);
                printText(xmlr);
                printPIData(xmlr);
                printComment(xmlr);
            }
        } catch (XMLStreamException ex) {
            System.out.println(ex.getMessage());
            if (ex.getNestedException() != null) {
                ex.getNestedException()
                  .printStackTrace();
            }
        }
    }
    public static final String getEventTypeString(int eventType) {
        switch (eventType) {
        case XMLEvent.START_ELEMENT:
            return "START_ELEMENT";
        case XMLEvent.END_ELEMENT:
            return "END_ELEMENT";
        case XMLEvent.PROCESSING_INSTRUCTION:
            return "PROCESSING_INSTRUCTION";
        case XMLEvent.CHARACTERS:
            return "CHARACTERS";
        case XMLEvent.ruMENT:
            return "COMMENT";
        case XMLEvent.START_DOCUMENT:
            return "START_DOCUMENT";
        case XMLEvent.END_DOCUMENT:
            return "END_DOCUMENT";
        case XMLEvent.ENTITY_REFERENCE:
            return "ENTITY_REFERENCE";
        case XMLEvent.ATTRIBUTE:
            return "ATTRIBUTE";
        case XMLEvent.DTD:
            return "DTD";
        case XMLEvent.CDATA:
            return "CDATA";
        case XMLEvent.SPACE:
            return "SPACE";
        }
        return "UNKNOWN_EVENT_TYPE , " + eventType;
    }
    private static void printEventType(int eventType) {
        System.out.println("EVENT TYPE(" + eventType + ") = " + getEventTypeString(eventType));
    }
    private static void printStartDocument(XMLStreamReader xmlr) {
        if (xmlr.START_DOCUMENT == xmlr.getEventType()) {
            System.out.println(
                    "<?xml version=\"" + xmlr.getVersion() + "\""
                    + " encoding=\"" + xmlr.getCharacterEncodingScheme() + "\""
                    + "?>");
        }
    }
    private static void printComment(XMLStreamReader xmlr) {
        if (xmlr.getEventType() == xmlr.ruMENT) {
            System.out.print("<!--" + xmlr.getText() + "-->");
        }
    }
    private static void printText(XMLStreamReader xmlr) {
        if (xmlr.hasText()) {
            System.out.print(xmlr.getText());
        }
    }
    private static void printPIData(XMLStreamReader xmlr) {
        if (xmlr.getEventType() == XMLEvent.PROCESSING_INSTRUCTION) {
            System.out.print(
                    "<?" + xmlr.getPITarget() + " " + xmlr.getPIData() + "?>");
        }
    }
    private static void printStartElement(XMLStreamReader xmlr) {
        if (xmlr.isStartElement()) {
            System.out.print("<" + xmlr.getName().toString());
            printAttributes(xmlr);
            System.out.print(</codeTitle><cnTitle></cnTitle><codeKeywords></codeKeywords><codeComments></codeComments>");
        }
    }
    private static void printEndElement(XMLStreamReader xmlr) {
        if (xmlr.isEndElement()) {
            System.out.print("</" + xmlr.getName().toString() + </codeTitle><cnTitle></cnTitle><codeKeywords></codeKeywords><codeComments></codeComments>");
        }
    }
    private static void printAttributes(XMLStreamReader xmlr) {
        int count = xmlr.getAttributeCount();
        if (count > 0) {
            for (int i = 0; i < count; i++) {
                System.out.print(" ");
                System.out.print(xmlr.getAttributeName(i).toString());
                System.out.print("=");
                System.out.print("\"");
                System.out.print(xmlr.getAttributeValue(i));
                System.out.print("\"");
            }
        }
        count = xmlr.getNamespaceCount();
        if (count > 0) {
            for (int i = 0; i < count; i++) {
                System.out.print(" ");
                System.out.print("xmlns");
                if (xmlr.getNamespacePrefix(i) != null) {
                    System.out.print(":" + xmlr.getNamespacePrefix(i));
                }
                System.out.print("=");
                System.out.print("\"");
                System.out.print(xmlr.getNamespaceURI(i));
                System.out.print("\"");
            }
        }
    }
}





Get information as an XMLEvent object when using cursor approach

 
import java.io.FileInputStream;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.events.StartElement;
import javax.xml.stream.events.XMLEvent;
import javax.xml.stream.util.XMLEventAllocator;
import com.sun.xml.internal.stream.events.XMLEventAllocatorImpl;

class CursorApproachEventObject {
    static XMLEventAllocator allocator = null;
    public static void main(String[] args) throws Exception {
        String filename = "yourXML.xml";
        XMLInputFactory xmlif = XMLInputFactory.newInstance();
        xmlif.setEventAllocator(new XMLEventAllocatorImpl());
        allocator = xmlif.getEventAllocator();
        XMLStreamReader xmlr = xmlif.createXMLStreamReader(filename,new FileInputStream(filename));
        int eventType = xmlr.getEventType();
        while (xmlr.hasNext()) {
            eventType = xmlr.next();
            if ((eventType == XMLStreamConstants.START_ELEMENT)&& xmlr.getLocalName().equals("Book")) {
                StartElement event = getXMLEvent(xmlr).asStartElement();
                System.out.println("EVENT: " + event.toString());
            }
        }
    }
    private static XMLEvent getXMLEvent(XMLStreamReader reader)
        throws XMLStreamException {
        return allocator.allocate(reader);
    }
}





STAX cursor

 
import java.io.FileInputStream;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.events.XMLEvent;

class StaxCursorTest {
    public static void main(String[] args) throws Exception {
        String filename = "yourXML.xml";
        XMLInputFactory xmlif = null;
        xmlif = XMLInputFactory.newInstance();
        xmlif.setProperty(XMLInputFactory.IS_REPLACING_ENTITY_REFERENCES,Boolean.TRUE);
        xmlif.setProperty(XMLInputFactory.IS_SUPPORTING_EXTERNAL_ENTITIES,Boolean.FALSE);
        xmlif.setProperty(XMLInputFactory.IS_COALESCING, Boolean.FALSE);
        try {
            XMLStreamReader xmlr = xmlif.createXMLStreamReader(filename,new FileInputStream(filename));
            int eventType = xmlr.getEventType();
            printStartDocument(xmlr);
            while (xmlr.hasNext()) {
                eventType = xmlr.next();
                printStartElement(xmlr);
                printEndElement(xmlr);
                printText(xmlr);
                printPIData(xmlr);
                printComment(xmlr);
            }
        } catch (XMLStreamException ex) {
            System.out.println(ex.getMessage());
            if (ex.getNestedException() != null) {
                ex.getNestedException()
                  .printStackTrace();
            }
        }
    }
    public static final String getEventTypeString(int eventType) {
        switch (eventType) {
        case XMLEvent.START_ELEMENT:
            return "START_ELEMENT";
        case XMLEvent.END_ELEMENT:
            return "END_ELEMENT";
        case XMLEvent.PROCESSING_INSTRUCTION:
            return "PROCESSING_INSTRUCTION";
        case XMLEvent.CHARACTERS:
            return "CHARACTERS";
        case XMLEvent.ruMENT:
            return "COMMENT";
        case XMLEvent.START_DOCUMENT:
            return "START_DOCUMENT";
        case XMLEvent.END_DOCUMENT:
            return "END_DOCUMENT";
        case XMLEvent.ENTITY_REFERENCE:
            return "ENTITY_REFERENCE";
        case XMLEvent.ATTRIBUTE:
            return "ATTRIBUTE";
        case XMLEvent.DTD:
            return "DTD";
        case XMLEvent.CDATA:
            return "CDATA";
        case XMLEvent.SPACE:
            return "SPACE";
        }
        return "UNKNOWN_EVENT_TYPE , " + eventType;
    }
    private static void printEventType(int eventType) {
        System.out.println("EVENT TYPE(" + eventType + ") = " + getEventTypeString(eventType));
    }
    private static void printStartDocument(XMLStreamReader xmlr) {
        if (xmlr.START_DOCUMENT == xmlr.getEventType()) {
            System.out.println(
                    "<?xml version=\"" + xmlr.getVersion() + "\""
                    + " encoding=\"" + xmlr.getCharacterEncodingScheme() + "\""
                    + "?>");
        }
    }
    private static void printComment(XMLStreamReader xmlr) {
        if (xmlr.getEventType() == xmlr.ruMENT) {
            System.out.print("<!--" + xmlr.getText() + "-->");
        }
    }
    private static void printText(XMLStreamReader xmlr) {
        if (xmlr.hasText()) {
            System.out.print(xmlr.getText());
        }
    }
    private static void printPIData(XMLStreamReader xmlr) {
        if (xmlr.getEventType() == XMLEvent.PROCESSING_INSTRUCTION) {
            System.out.print(
                    "<?" + xmlr.getPITarget() + " " + xmlr.getPIData() + "?>");
        }
    }
    private static void printStartElement(XMLStreamReader xmlr) {
        if (xmlr.isStartElement()) {
            System.out.print("<" + xmlr.getName().toString());
            printAttributes(xmlr);
            System.out.print(</codeTitle><cnTitle></cnTitle><codeKeywords></codeKeywords><codeComments></codeComments>");
        }
    }
    private static void printEndElement(XMLStreamReader xmlr) {
        if (xmlr.isEndElement()) {
            System.out.print("</" + xmlr.getName().toString() + </codeTitle><cnTitle></cnTitle><codeKeywords></codeKeywords><codeComments></codeComments>");
        }
    }
    private static void printAttributes(XMLStreamReader xmlr) {
        int count = xmlr.getAttributeCount();
        if (count > 0) {
            for (int i = 0; i < count; i++) {
                System.out.print(" ");
                System.out.print(xmlr.getAttributeName(i).toString());
                System.out.print("=");
                System.out.print("\"");
                System.out.print(xmlr.getAttributeValue(i));
                System.out.print("\"");
            }
        }
        count = xmlr.getNamespaceCount();
        if (count > 0) {
            for (int i = 0; i < count; i++) {
                System.out.print(" ");
                System.out.print("xmlns");
                if (xmlr.getNamespacePrefix(i) != null) {
                    System.out.print(":" + xmlr.getNamespacePrefix(i));
                }
                System.out.print("=");
                System.out.print("\"");
                System.out.print(xmlr.getNamespaceURI(i));
                System.out.print("\"");
            }
        }
    }
}





StAX is a technology similar to SAX.

 
import java.io.FileReader;
import java.io.Reader;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamReader;
public class XMLStreamReaderDemo {
  public static void main(String[] args) throws Exception {
    XMLInputFactory factory = XMLInputFactory.newInstance();
    Reader fileReader = new FileReader("source.xml");
    XMLStreamReader reader = factory.createXMLStreamReader(fileReader);
    while (reader.hasNext()) {
      process(reader);
      reader.next();
    }
  }
  private static void process(XMLStreamReader reader) {
    int eventType = reader.getEventType();
    switch (eventType) {
    case XMLStreamConstants.START_ELEMENT:
      System.out.println("Start element: " + reader.getLocalName());
      int count = reader.getAttributeCount();
      for (int i = 0; i < count; i++) {
        String name = reader.getAttributeLocalName(i);
        String value = reader.getAttributeValue(i);
        System.out.println("\tAttribute name/value: " + name + "/" + value);
      }
      break;
    case XMLStreamConstants.END_ELEMENT:
      System.out.println("End element: " + reader.getLocalName());
      break;
    case XMLStreamConstants.CHARACTERS:
      System.out.println("Text: " + reader.getText());
      break;
    default:
      break;
    }
  }
}





Stax XML cursor read

 

import java.io.FileReader;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.events.XMLEvent;
public class STAXCursorRead {
  public static void main(String args[]) throws Exception {
    XMLInputFactory xmlif = XMLInputFactory.newInstance();
    XMLStreamReader xmlsr = xmlif.createXMLStreamReader(new FileReader("points.xml"));
    int eventType;
    while (xmlsr.hasNext()) {
      eventType = xmlsr.next();
      switch (eventType) {
      case XMLEvent.START_ELEMENT:
        System.out.println(xmlsr.getName());
        break;
      case XMLEvent.CHARACTERS:
        System.out.println(xmlsr.getText());
        break;
      default:
        break;
      }
    }
  }
}





Stax XML iterator read

 

import java.io.FileReader;
import javax.xml.stream.XMLEventReader;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.events.XMLEvent;
public class STAXIteratorRead {
  public static void main(String args[]) throws Exception {
    XMLInputFactory xmlif = XMLInputFactory.newInstance();
    XMLEventReader xmler = xmlif.createXMLEventReader(new FileReader("yourFile.xml"));
    XMLEvent event;
    while (xmler.hasNext()) {
      event = xmler.nextEvent();
      if (event.isStartElement()) {
        System.out.println(event.asStartElement().getName());
      } else if (event.isCharacters()) {
        System.out.println(event.asCharacters().getData());
      }
    }
  }
}





Streaming XML Parser: Stax Event

 
import java.io.FileInputStream;
import javax.xml.stream.*;
import javax.xml.stream.events.*;
import javax.xml.namespace.QName;

public class EventParse {
    public static void main(String[] args) throws Exception {
        String filename = "yourXML.xml";
        XMLInputFactory factory = XMLInputFactory.newInstance();
        System.out.println("FACTORY: " + factory);
        XMLEventReader r = factory.createXMLEventReader(filename,new FileInputStream(filename));
        while (r.hasNext()) {
            XMLEvent e = r.nextEvent();
            System.out.println(e.toString());
        }
    }
    public static final String getEventTypeString(int eventType) {
        switch (eventType) {
        case XMLEvent.START_ELEMENT:
            return "START_ELEMENT";
        case XMLEvent.END_ELEMENT:
            return "END_ELEMENT";
        case XMLEvent.PROCESSING_INSTRUCTION:
            return "PROCESSING_INSTRUCTION";
        case XMLEvent.CHARACTERS:
            return "CHARACTERS";
        case XMLEvent.ruMENT:
            return "COMMENT";
        case XMLEvent.START_DOCUMENT:
            return "START_DOCUMENT";
        case XMLEvent.END_DOCUMENT:
            return "END_DOCUMENT";
        case XMLEvent.ENTITY_REFERENCE:
            return "ENTITY_REFERENCE";
        case XMLEvent.ATTRIBUTE:
            return "ATTRIBUTE";
        case XMLEvent.DTD:
            return "DTD";
        case XMLEvent.CDATA:
            return "CDATA";
        case XMLEvent.SPACE:
            return "SPACE";
        }
        return "UNKNOWN_EVENT_TYPE " + "," + eventType;
    }
}





Streaming XML Parser: Stax Event Filter

 
import java.io.*;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;
import javax.xml.stream.*;
import javax.xml.stream.events.*;
import java.util.Date;
import javax.xml.namespace.QName;

public class MyStreamFilter implements javax.xml.stream.StreamFilter {
    public static void main(String[] args) throws Exception {
        String filename = "yourXML.xml";
        XMLInputFactory xmlif = null;
        xmlif = XMLInputFactory.newInstance();
        xmlif.setProperty(XMLInputFactory.IS_REPLACING_ENTITY_REFERENCES,Boolean.TRUE);
        xmlif.setProperty(XMLInputFactory.IS_SUPPORTING_EXTERNAL_ENTITIES,Boolean.FALSE);
        xmlif.setProperty(XMLInputFactory.IS_NAMESPACE_AWARE, Boolean.TRUE);
        xmlif.setProperty(XMLInputFactory.IS_COALESCING, Boolean.TRUE);
        System.out.println("FACTORY: " + xmlif);
        System.out.println("filename = " + filename);
        FileInputStream fis = new FileInputStream(filename);
        XMLStreamReader xmlr = xmlif.createFilteredReader(xmlif.createXMLStreamReader(fis),new MyStreamFilter());
        int eventType = xmlr.getEventType();
        printEventType(eventType);
        while (xmlr.hasNext()) {
                eventType = xmlr.next();
                printEventType(eventType);
                printName(xmlr, eventType);
                printText(xmlr);
                if (xmlr.isStartElement()) {
                    printAttributes(xmlr);
                }
                printPIData(xmlr);
        }
    }
    public static final String getEventTypeString(int eventType) {
        switch (eventType) {
        case XMLEvent.START_ELEMENT:
            return "START_ELEMENT";
        case XMLEvent.END_ELEMENT:
            return "END_ELEMENT";
        case XMLEvent.PROCESSING_INSTRUCTION:
            return "PROCESSING_INSTRUCTION";
        case XMLEvent.CHARACTERS:
            return "CHARACTERS";
        case XMLEvent.ruMENT:
            return "COMMENT";
        case XMLEvent.START_DOCUMENT:
            return "START_DOCUMENT";
        case XMLEvent.END_DOCUMENT:
            return "END_DOCUMENT";
        case XMLEvent.ENTITY_REFERENCE:
            return "ENTITY_REFERENCE";
        case XMLEvent.ATTRIBUTE:
            return "ATTRIBUTE";
        case XMLEvent.DTD:
            return "DTD";
        case XMLEvent.CDATA:
            return "CDATA";
        }
        return "UNKNOWN_EVENT_TYPE";
    }
    private static void printEventType(int eventType) {
        System.out.print("EVENT TYPE(" + eventType + "):");
        System.out.println(getEventTypeString(eventType));
    }
    private static void printName(
        XMLStreamReader xmlr,
        int eventType) {
        if (xmlr.hasName()) {
            System.out.println("HAS NAME: " + xmlr.getLocalName());
        } else {
            System.out.println("HAS NO NAME");
        }
    }
    private static void printText(XMLStreamReader xmlr) {
        if (xmlr.hasText()) {
            System.out.println("HAS TEXT: " + xmlr.getText());
        } else {
            System.out.println("HAS NO TEXT");
        }
    }
    private static void printPIData(XMLStreamReader xmlr) {
        if (xmlr.getEventType() == XMLEvent.PROCESSING_INSTRUCTION) {
            System.out.println(" PI target = " + xmlr.getPITarget());
            System.out.println(" PI Data = " + xmlr.getPIData());
        }
    }
    private static void printAttributes(XMLStreamReader xmlr) {
        if (xmlr.getAttributeCount() > 0) {
            System.out.println("\nHAS ATTRIBUTES: ");
            int count = xmlr.getAttributeCount();
            for (int i = 0; i < count; i++) {
                QName name = xmlr.getAttributeName(i);
                String namespace = xmlr.getAttributeNamespace(i);
                String type = xmlr.getAttributeType(i);
                String prefix = xmlr.getAttributePrefix(i);
                String value = xmlr.getAttributeValue(i);
                System.out.println("ATTRIBUTE-PREFIX: " + prefix);
                System.out.println("ATTRIBUTE-NAMESP: " + namespace);
                System.out.println("ATTRIBUTE-NAME:   " + name.toString());
                System.out.println("ATTRIBUTE-VALUE:  " + value);
                System.out.println("ATTRIBUTE-TYPE:  " + type);
            }
        } else {
            System.out.println("HAS NO ATTRIBUTES");
        }
    }
    public boolean accept(XMLStreamReader reader) {
        if (!reader.isStartElement() && !reader.isEndElement()) {
            return false;
        } else {
            return true;
        }
    }
}





Using XMLEventFactory to create xml document

 
import java.util.Arrays;
import java.util.List;
import javax.xml.stream.XMLEventFactory;
import javax.xml.stream.XMLEventWriter;
import javax.xml.stream.XMLOutputFactory;
import javax.xml.stream.events.Attribute;
import javax.xml.stream.events.Characters;
import javax.xml.stream.events.EndDocument;
import javax.xml.stream.events.EndElement;
import javax.xml.stream.events.StartDocument;
import javax.xml.stream.events.StartElement;
public class XMLEventWriterDemo {
  public static void main(String[] args) throws Exception {
    XMLOutputFactory outputFactory = XMLOutputFactory.newInstance();
    XMLEventWriter writer = outputFactory.createXMLEventWriter(System.out);
    XMLEventFactory xmlEventFactory = XMLEventFactory.newInstance();
    StartDocument startDocument = xmlEventFactory.createStartDocument("UTF-8", "1.0");
    writer.add(startDocument);
    StartElement startElement = xmlEventFactory.createStartElement("", "", "My-list");
    writer.add(startElement);
    Attribute attribute = xmlEventFactory.createAttribute("version", "1");
    List attributeList = Arrays.asList(attribute);
    List nsList = Arrays.asList();
    StartElement startElement2 = xmlEventFactory.createStartElement("", "", "Item",
        attributeList.iterator(), nsList.iterator());
    writer.add(startElement2);
    StartElement codeSE = xmlEventFactory.createStartElement("", "", "code");
    writer.add(codeSE);
    Characters codeChars = xmlEventFactory.createCharacters("I001");
    writer.add(codeChars);
    EndElement codeEE = xmlEventFactory.createEndElement("", "", "code");
    writer.add(codeEE);
    StartElement nameSE = xmlEventFactory.createStartElement(" ", " ", "name");
    writer.add(nameSE);
    Characters nameChars = xmlEventFactory.createCharacters("a name");
    writer.add(nameChars);
    EndElement nameEE = xmlEventFactory.createEndElement("", "", "name");
    writer.add(nameEE);
    StartElement contactSE = xmlEventFactory.createStartElement("", "", "contact");
    writer.add(contactSE);
    Characters contactChars = xmlEventFactory.createCharacters("another name");
    writer.add(contactChars);
    EndElement contactEE = xmlEventFactory.createEndElement("", "", "contact");
    writer.add(contactEE);
    EndDocument ed = xmlEventFactory.createEndDocument();
    writer.add(ed);
    writer.flush();
    writer.close();
  }
}





Using XMLStreamWriter to create XML file

 
import java.io.FileWriter;
import javax.xml.stream.XMLOutputFactory;
import javax.xml.stream.XMLStreamWriter;
import java.util.Date;
import javax.xml.namespace.QName;
public class CursorWriter {
    public static void main(String[] args) throws Exception {
        String fileName = "yourXML.xml";
        XMLOutputFactory xof = XMLOutputFactory.newInstance();
        XMLStreamWriter xtw = null;
        xtw = xof.createXMLStreamWriter(new FileWriter(fileName));
        xtw.writeComment("all elements here are explicitly in the HTML namespace");
        xtw.writeStartDocument("utf-8", "1.0");
        xtw.setPrefix("html", "http://www.w3.org/TR/REC-html40");
        xtw.writeStartElement("http://www.w3.org/TR/REC-html40", "html");
        xtw.writeNamespace("html", "http://www.w3.org/TR/REC-html40");
        xtw.writeStartElement("http://www.w3.org/TR/REC-html40", "head");
        xtw.writeStartElement("http://www.w3.org/TR/REC-html40", "title");
        xtw.writeCharacters("character");
        xtw.writeEndElement();
        xtw.writeEndElement();
        xtw.writeStartElement("http://www.w3.org/TR/REC-html40", "body");
        xtw.writeStartElement("http://www.w3.org/TR/REC-html40", "p");
        xtw.writeCharacters("another character");
        xtw.writeStartElement("http://www.w3.org/TR/REC-html40", "a");
        xtw.writeAttribute("href", "http://www.jexp.ru");
        xtw.writeCharacters("here");
        xtw.writeEndElement();
        xtw.writeEndElement();
        xtw.writeEndElement();
        xtw.writeEndElement();
        xtw.writeEndDocument();
        xtw.flush();
        xtw.close();
        System.out.println("Done");
    }
}





XMLEventReader and XMLEventWriter for Stax XML parser

 
import java.util.Calendar;
import javax.xml.stream.XMLEventFactory;
import javax.xml.stream.XMLEventReader;
import javax.xml.stream.XMLEventWriter;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLOutputFactory;
import javax.xml.stream.events.Characters;
import javax.xml.stream.events.XMLEvent;

class StaxEvent {
    XMLEventFactory m_eventFactory = XMLEventFactory.newInstance();
    public static void main(String[] args) throws Exception {
            StaxEvent ms = new StaxEvent();
            XMLEventReader reader = XMLInputFactory.newInstance().createXMLEventReader(new java.io.FileInputStream("yourXML.xml"));
            XMLEventWriter writer = XMLOutputFactory.newInstance().createXMLEventWriter(System.out);
            while (reader.hasNext()) {
                XMLEvent event = (XMLEvent) reader.next();
                if (event.getEventType() == event.CHARACTERS) {
                    writer.add(ms.getNewCharactersEvent(event.asCharacters()));
                } else {
                    writer.add(event);
                }
            }
            writer.flush();
    }
    private Characters getNewCharactersEvent(Characters event) {
        if (event.getData().equalsIgnoreCase("Name1")) {
            return m_eventFactory.createCharacters(Calendar.getInstance().getTime().toString());
        } else {
            return event;
        }
    }
}





XMLEventReader Demo

 

import java.io.FileReader;
import java.io.Reader;
import java.util.Iterator;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLEventReader;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.events.Attribute;
import javax.xml.stream.events.Characters;
import javax.xml.stream.events.EndElement;
import javax.xml.stream.events.StartElement;
import javax.xml.stream.events.XMLEvent;
public class XMLEventReaderDemo {
  public static void main(String[] args) throws Exception {
    XMLInputFactory factory = XMLInputFactory.newInstance();
    Reader fileReader = new FileReader("Source.xml");
    XMLEventReader reader = factory.createXMLEventReader(fileReader);
    while (reader.hasNext()) {
      XMLEvent event = reader.nextEvent();
      if (event.isStartElement()) {
        StartElement element = (StartElement) event;
        System.out.println("Start Element: " + element.getName());
        Iterator iterator = element.getAttributes();
        while (iterator.hasNext()) {
          Attribute attribute = (Attribute) iterator.next();
          QName name = attribute.getName();
          String value = attribute.getValue();
          System.out.println("Attribute name/value: " + name + "/" + value);
        }
      }
      if (event.isEndElement()) {
        EndElement element = (EndElement) event;
        System.out.println("End element:" + element.getName());
      }
      if (event.isCharacters()) {
        Characters characters = (Characters) event;
        System.out.println("Text: " + characters.getData());
      }
    }
  }
}





XMLStreamWriter Demo

 
import javax.xml.stream.XMLOutputFactory;
import javax.xml.stream.XMLStreamWriter;
public class XMLStreamWriterDemo {
  public static void main(String[] args) throws Exception {
    XMLOutputFactory factory = XMLOutputFactory.newInstance();
    XMLStreamWriter writer = factory.createXMLStreamWriter(System.out);
    writer.writeStartDocument("1.0");
    writer.writeStartElement("catalog");
    writer.writeStartElement("book");
    writer.writeAttribute("id", "1");
    writer.writeStartElement("code");
    writer.writeCharacters("I01");
    writer.writeEndElement();
    writer.writeStartElement("title");
    writer.writeCharacters("This is the title");
    writer.writeEndElement();
    writer.writeStartElement("price");
    writer.writeCharacters("$2.95");
    writer.writeEndElement();
    writer.writeEndDocument();
    writer.flush();
    writer.close();
  }
}


Источник — «http://jexp.ru/index.php?title=Java/JDK_6/Streaming_XML_Parser&oldid=6345»