Java by API/javax.xml.stream/XMLEventReader

XMLEventReader: hasNext()

   <source lang="java">
 

import java.io.FileReader; import javax.xml.stream.XMLEventReader; import javax.xml.stream.XMLInputFactory; import javax.xml.stream.events.XMLEvent; public class Main {

 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());
     }
   }
 }

}

 </source>
   
  
 
  

XMLEventReader: nextEvent() throws XMLStreamException

   <source lang="java">
 

import java.io.FileInputStream; import javax.xml.stream.XMLEventReader; import javax.xml.stream.XMLInputFactory; import javax.xml.stream.events.XMLEvent; public class Main {

 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;
 }

}

 </source>
   
  
 
  

XMLEventWriter: add(XMLEvent event) throws XMLStreamException

   <source lang="java">
 

import java.util.ArrayList; import java.util.Collections; 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.Namespace; public class Main {

 public static void main(String[] args) throws Exception {
   XMLEventFactory eventFactory = XMLEventFactory.newInstance();
   XMLEventWriter writer = XMLOutputFactory.newInstance().createXMLEventWriter(System.out);
   Namespace ns1 = eventFactory.createNamespace("ns1", "http://www.e.ru/ns1");
   Namespace ns2 = eventFactory.createNamespace("ns2", "http://www.e.ru/ns2");
   List<Namespace> namespaceList = new ArrayList<Namespace>();
   namespaceList.add(ns1);
   namespaceList.add(ns2);
   Attribute attribute = eventFactory.createAttribute(ns2.getPrefix(), ns2.getNamespaceURI(),
       "attribute", "true");
   writer.add(eventFactory.createStartElement(ns1.getPrefix(), ns1.getNamespaceURI(), "sample",
       Collections.singletonList(attribute).iterator(), namespaceList.iterator()));
   writer.add(eventFactory.createEndDocument());
   writer.flush();
 }

}

 </source>
   
  
 
  

XMLEventWriter: add(XMLEventReader reader) throws XMLStreamException

   <source lang="java">
 

import java.io.FileInputStream; import javax.xml.stream.XMLEventReader; import javax.xml.stream.XMLEventWriter; import javax.xml.stream.XMLInputFactory; import javax.xml.stream.XMLOutputFactory; import javax.xml.stream.XMLResolver; import javax.xml.stream.XMLStreamException; public class Main {

 public static void main(String[] args) throws Exception {
   XMLInputFactory inputFactory = XMLInputFactory.newInstance();
   inputFactory.setXMLResolver(new XMLResolver() {
     public Object resolveEntity(String publicID, String systemID, String baseURI, String namespace)
         throws XMLStreamException {
       System.out.println(systemID);
       return null;
     }
   });
   XMLEventReader reader = inputFactory.createXMLEventReader(new FileInputStream(
       "dtd.xml"));
   XMLEventWriter writer = XMLOutputFactory.newInstance().createXMLEventWriter(System.out);
   writer.add(reader);
   writer.flush();
 }

}

 </source>