Java by API/javax.xml.stream/XMLStreamReader

XMLStreamReader: getElementText()

   <source lang="java">
 

import java.io.File; import java.io.FileInputStream; import javax.xml.stream.XMLInputFactory; import javax.xml.stream.XMLStreamConstants; import javax.xml.stream.XMLStreamReader; public class Main {

 public static void main(String[] args) throws Exception {
   XMLInputFactory inputFactory = XMLInputFactory.newInstance();
   XMLStreamReader reader = inputFactory.createXMLStreamReader(new FileInputStream(new File("test.xml")));
   int eventTypeID = reader.nextTag();
   reader.require(XMLStreamConstants.START_ELEMENT, null, "person");
   eventTypeID = reader.nextTag();
   reader.require(XMLStreamConstants.START_ELEMENT, null, "first_name");
   System.out.println(reader.getElementText());
 }

}

 </source>
   
  
 
  

XMLStreamReader: getEventType()

   <source lang="java">
 

import java.io.File; import java.io.FileInputStream; import javax.xml.stream.XMLInputFactory; import javax.xml.stream.XMLStreamReader; public class Main {

 public static void main(String[] args) throws Exception {
   File file = new File("test.xml");
   XMLInputFactory inputFactory = XMLInputFactory.newInstance();
   XMLStreamReader reader = inputFactory.createXMLStreamReader(new FileInputStream(file));
   while (reader.getEventType() == 6)
     reader.next();
   int eventTypeID = reader.next();
   System.out.println("Hello " + reader.getText());
 }

}

 </source>
   
  
 
  

XMLStreamReader.getLocalName()

   <source lang="java">
 

import java.io.FileInputStream; import javax.xml.stream.XMLInputFactory; import javax.xml.stream.XMLStreamConstants; import javax.xml.stream.XMLStreamReader; public class Main {

 public static void main(String[] args) throws Exception {
   XMLInputFactory inputFactory = XMLInputFactory.newInstance();
   inputFactory.setProperty(XMLInputFactory.IS_COALESCING, Boolean.TRUE);
   inputFactory.setProperty(XMLInputFactory.IS_REPLACING_ENTITY_REFERENCES, Boolean.TRUE);
   XMLStreamReader reader = inputFactory.createXMLStreamReader(new FileInputStream("e.xml"));
   while (reader.hasNext()) {
     int event = reader.next();
     if (event == XMLStreamConstants.CHARACTERS)
       System.out.println(reader.getText());
     else if (event == XMLStreamConstants.ENTITY_REFERENCE) {
       System.out.println("en: " + reader.getLocalName());
       System.out.println("er: " + reader.getText());
     }
   }
   inputFactory.setProperty(XMLInputFactory.IS_REPLACING_ENTITY_REFERENCES, Boolean.FALSE);
   reader = inputFactory.createXMLStreamReader(new FileInputStream("e.xml"));
   while (reader.hasNext()) {
     int event = reader.next();
     if (event == XMLStreamConstants.CHARACTERS)
       System.out.println(reader.getText());
     else if (event == XMLStreamConstants.ENTITY_REFERENCE) {
       System.out.println("en: " + reader.getLocalName());
       System.out.println("er: " + reader.getText());
     }
   }
 }

}

 </source>
   
  
 
  

XMLStreamReader: getLocation()

   <source lang="java">
 

import java.io.File; import java.io.FileInputStream; import javax.xml.stream.XMLInputFactory; import javax.xml.stream.XMLStreamConstants; import javax.xml.stream.XMLStreamException; import javax.xml.stream.XMLStreamReader; public class Main {

 public static void main(String[] args) throws Exception {
   XMLInputFactory inputFactory = XMLInputFactory.newInstance();
   XMLStreamReader reader = inputFactory.createXMLStreamReader(new FileInputStream(new File("test.xml")));
   int eventTypeID = reader.nextTag();
   reader.require(XMLStreamConstants.START_ELEMENT, null, "person");
   eventTypeID = reader.nextTag();
   try {
     reader.require(XMLStreamConstants.START_ELEMENT, null, "first_name");
   } catch (XMLStreamException e) {
     System.out.println("Assertion failed. " + e.getMessage() + " at "
         + reader.getLocation().getLineNumber() + ":" + reader.getLocation().getColumnNumber());
   }
   System.out.println(reader.getElementText());
 }

}

 </source>
   
  
 
  

XMLStreamReader: getName()

   <source lang="java">
 

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

 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;
     }
   }
 }

}

 </source>
   
  
 
  

XMLStreamReader: getText()

   <source lang="java">
 

import java.io.File; import java.io.FileInputStream; import javax.xml.stream.XMLInputFactory; import javax.xml.stream.XMLStreamReader; public class Main {

 public static void main(String[] args) throws Exception {
   File file = new File("test.xml");
   XMLInputFactory inputFactory = XMLInputFactory.newInstance();
   XMLStreamReader reader = inputFactory.createXMLStreamReader(new FileInputStream(file));
   while (reader.getEventType() == 6)
     reader.next();
   int eventTypeID = reader.next();
   System.out.println("Hello " + reader.getText());
 }

}

 </source>
   
  
 
  

XMLStreamReader: hasNext()

   <source lang="java">
 

import java.io.File; import java.io.FileInputStream; import javax.xml.stream.EventFilter; import javax.xml.stream.StreamFilter; 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.XMLEvent; public class Main {

 public static void main(String[] args) throws Exception {
   XMLInputFactory inputFactory = XMLInputFactory.newInstance();
   XMLStreamReader reader = inputFactory.createXMLStreamReader(new FileInputStream(new File("test.xml")));
   System.out.println(countEvents(reader));
   reader = inputFactory.createXMLStreamReader(new FileInputStream(new File("test.xml")));
   StreamFilter filter = new ElementOnlyFilter();
   reader = inputFactory.createFilteredReader(reader, filter);
   System.out.println(countEvents(reader));
 }
 private static int countEvents(XMLStreamReader reader) throws XMLStreamException {
   int counter = 1;
   while (reader.hasNext()) {
     reader.next();
     counter++;
   }
   return counter;
 }

} class ElementOnlyFilter implements EventFilter, StreamFilter {

 public boolean accept(XMLEvent event) {
   return accept(event.getEventType());
 }
 public boolean accept(XMLStreamReader reader) {
   return accept(reader.getEventType());
 }
 private boolean accept(int eventType) {
   return eventType == XMLStreamConstants.START_ELEMENT
       || eventType == XMLStreamConstants.END_ELEMENT;
 }

}

 </source>
   
  
 
  

XMLStreamReader: next()

   <source lang="java">
 

import java.io.File; import java.io.FileInputStream; import javax.xml.stream.XMLInputFactory; import javax.xml.stream.XMLStreamReader; public class Main {

 public static void main(String[] args) throws Exception {
   File file = new File("test.xml");
   XMLInputFactory inputFactory = XMLInputFactory.newInstance();
   XMLStreamReader reader = inputFactory.createXMLStreamReader(new FileInputStream(file));
   while (reader.getEventType() == 6)
     reader.next();
   int eventTypeID = reader.next();
   System.out.println("Hello " + reader.getText());
 }

}

 </source>
   
  
 
  

XMLStreamReader: nextTag()

   <source lang="java">
 

import java.io.File; import java.io.FileInputStream; import javax.xml.stream.XMLInputFactory; import javax.xml.stream.XMLStreamReader; public class Main {

 public static void main(String[] args) throws Exception {
   File file = new File("text.xml");
   XMLInputFactory inputFactory = XMLInputFactory.newInstance();
   XMLStreamReader reader = inputFactory.createXMLStreamReader(new FileInputStream(file));
   int eventTypeID = reader.nextTag();
   eventTypeID = reader.nextTag();
   eventTypeID = reader.next();
   System.out.println("Hello " + reader.getText());
 }

}

 </source>
   
  
 
  

XMLStreamReader: require(int type, String namespaceURI, String localName)

   <source lang="java">
 

import java.io.File; import java.io.FileInputStream; import javax.xml.stream.XMLInputFactory; import javax.xml.stream.XMLStreamConstants; import javax.xml.stream.XMLStreamException; import javax.xml.stream.XMLStreamReader; public class Main {

 public static void main(String[] args) throws Exception {
   XMLInputFactory inputFactory = XMLInputFactory.newInstance();
   XMLStreamReader reader = inputFactory.createXMLStreamReader(new FileInputStream(new File("test.xml")));
   int eventTypeID = reader.nextTag();
   reader.require(XMLStreamConstants.START_ELEMENT, null, "person");
   eventTypeID = reader.nextTag();
   try {
     reader.require(XMLStreamConstants.START_ELEMENT, null, "first_name");
   } catch (XMLStreamException e) {
     System.out.println("Assertion failed. " + e.getMessage() + " at "
         + reader.getLocation().getLineNumber() + ":" + reader.getLocation().getColumnNumber());
   }
   System.out.println(reader.getElementText());
 }

}

 </source>