Java/XML/StAX

Create a StAX Event Tree Viewer

  
import java.awt.BorderLayout;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.util.Iterator;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLEventReader;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.events.Attribute;
import javax.xml.stream.events.Characters;
import javax.xml.stream.events.DTD;
import javax.xml.stream.events.StartDocument;
import javax.xml.stream.events.StartElement;
import javax.xml.stream.events.XMLEvent;
public class StAXEventTreeViewer extends JFrame {
  DefaultMutableTreeNode base = new DefaultMutableTreeNode("XML File");
  DefaultTreeModel defaultTreeModel= new DefaultTreeModel(base);
  private JTree jTree= new JTree(defaultTreeModel);
  public StAXEventTreeViewer()throws XMLStreamException, FileNotFoundException {
    setSize(800, 650);
    buildTree(defaultTreeModel, base, new File("yourXML.xml"));
    getContentPane().add(new JScrollPane(jTree), BorderLayout.CENTER);
    setVisible(true);
  }
  public static void main(String[] args) throws Exception {
    new StAXEventTreeViewer();
  }
  public void buildTree(DefaultTreeModel treeModel, DefaultMutableTreeNode current, File file)
      throws XMLStreamException, FileNotFoundException {
    XMLInputFactory inputFactory = XMLInputFactory.newInstance();
    XMLEventReader reader = inputFactory.createXMLEventReader(new FileInputStream(file));
    while (reader.hasNext()) {
      XMLEvent event = reader.nextEvent();
      switch (event.getEventType()) {
      case XMLStreamConstants.START_DOCUMENT:
        StartDocument startDocument = (StartDocument) event;
        DefaultMutableTreeNode version = new DefaultMutableTreeNode(startDocument.getVersion());
        current.add(version);
        current.add(new DefaultMutableTreeNode(startDocument.isStandalone()));
        current.add(new DefaultMutableTreeNode(startDocument.standaloneSet()));
        current.add(new DefaultMutableTreeNode(startDocument.encodingSet()));
        current.add(new DefaultMutableTreeNode(startDocument.getCharacterEncodingScheme()));
        break;
      case XMLStreamConstants.START_ELEMENT:
        StartElement startElement = (StartElement) event;
        QName elementName = startElement.getName();
        DefaultMutableTreeNode element = new DefaultMutableTreeNode(elementName.getLocalPart());
        current.add(element);
        current = element;
        if (!elementName.getNamespaceURI().equals("")) {
          String prefix = elementName.getPrefix();
          if (prefix.equals("")) {
            prefix = "[None]";
          }
          DefaultMutableTreeNode namespace = new DefaultMutableTreeNode("prefix="
              + prefix + ",URI=" + elementName.getNamespaceURI());
          current.add(namespace);
        }
        for (Iterator it = startElement.getAttributes(); it.hasNext();) {
          Attribute attr = (Attribute) it.next();
          DefaultMutableTreeNode attribute = new DefaultMutableTreeNode("Attribute (name="
              + attr.getName().getLocalPart() + ",value=" + attr.getValue() + "")");
          String attURI = attr.getName().getNamespaceURI();
          if (!attURI.equals("")) {
            String attPrefix = attr.getName().getPrefix();
            if (attPrefix.equals("")) {
              attPrefix = "[None]";
            }
            attribute.add(new DefaultMutableTreeNode("prefix = " + attPrefix + ", URI = " + attURI));
          }
          current.add(attribute);
        }
        break;
      case XMLStreamConstants.END_ELEMENT:
        current = (DefaultMutableTreeNode) current.getParent();
        break;
      case XMLStreamConstants.CHARACTERS:
        Characters characters = (Characters) event;
        if (!characters.isIgnorableWhiteSpace() && !characters.isWhiteSpace()) {
          String data = characters.getData();
          if (data.length() != 0) {
            current.add(new DefaultMutableTreeNode(characters.getData()));
          }
        }
        break;
      case XMLStreamConstants.DTD:
        DTD dtde = (DTD) event;
        current.add(new DefaultMutableTreeNode(dtde.getDocumentTypeDeclaration()));
      default:
        System.out.println(event.getClass().getName());
      }
    }
  }
}

Load XML document to a tree with XML stream reader

  
import java.awt.BorderLayout;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
public class StAXStreamTreeViewer extends JFrame {
  private JTree jTree;
  DefaultTreeModel defaultTreeModel;
  public StAXStreamTreeViewer()throws Exception {
    StAXStreamTreeViewer viewer = new StAXStreamTreeViewer();
    File file = new File("yourXML.xml");
    DefaultMutableTreeNode base = new DefaultMutableTreeNode("XML Document: "
        + file.getAbsolutePath());
    defaultTreeModel = new DefaultTreeModel(base);
    jTree = new JTree(defaultTreeModel);
    buildTree(defaultTreeModel, base, file);
    getContentPane().add(new JScrollPane(jTree), BorderLayout.CENTER);
    viewer.setVisible(true);
    setSize(800, 450);
  }
  public static void main(String[] args)throws Exception {
    new StAXStreamTreeViewer();
  }
  public void buildTree(DefaultTreeModel treeModel, DefaultMutableTreeNode current, File file)
      throws XMLStreamException, FileNotFoundException {
    FileInputStream inputStream = new FileInputStream(file);
    XMLInputFactory inputFactory = XMLInputFactory.newInstance();
    XMLStreamReader reader = inputFactory.createXMLStreamReader(inputStream);
    addStartDocumentNodes(reader, current);
    parseRestOfDocument(reader, current);
  }
  private void addStartDocumentNodes(XMLStreamReader reader, DefaultMutableTreeNode current) {
    DefaultMutableTreeNode version = new DefaultMutableTreeNode(reader.getVersion());
    current.add(version);
    DefaultMutableTreeNode standalone = new DefaultMutableTreeNode(reader.isStandalone());
    current.add(standalone);
    DefaultMutableTreeNode standaloneSet = new DefaultMutableTreeNode(reader.standaloneSet());
    current.add(standaloneSet);
    DefaultMutableTreeNode encoding = new DefaultMutableTreeNode(reader.getEncoding());
    current.add(encoding);
    DefaultMutableTreeNode declaredEncoding = new DefaultMutableTreeNode(reader.getCharacterEncodingScheme());
    current.add(declaredEncoding);
  }
  private void parseRestOfDocument(XMLStreamReader reader, DefaultMutableTreeNode current)
      throws XMLStreamException {
    while (reader.hasNext()) {
      int type = reader.next();
      switch (type) {
      case XMLStreamConstants.START_ELEMENT:
        DefaultMutableTreeNode element = new DefaultMutableTreeNode(reader.getLocalName());
        current.add(element);
        current = element;
        if (reader.getNamespaceURI() != null) {
          String prefix = reader.getPrefix();
          if (prefix == null) {
            prefix = "[None]";
          }
          DefaultMutableTreeNode namespace = new DefaultMutableTreeNode("prefix = ""
              + prefix + "", URI = "" + reader.getNamespaceURI() + """);
          current.add(namespace);
        }
        if (reader.getAttributeCount() > 0) {
          for (int i = 0; i < reader.getAttributeCount(); i++) {
            DefaultMutableTreeNode attribute = new DefaultMutableTreeNode("Attribute (name = ""
                + reader.getAttributeLocalName(i) + "", value = "" + reader.getAttributeValue(i)
                + "")");
            String attURI = reader.getAttributeNamespace(i);
            if (attURI != null) {
              String attPrefix = reader.getAttributePrefix(i);
              if (attPrefix == null || attPrefix.equals("")) {
                attPrefix = "[None]";
              }
              DefaultMutableTreeNode attNamespace = new DefaultMutableTreeNode(
                  "prefix=" + attPrefix + ",URI=" + attURI);
              attribute.add(attNamespace);
            }
            current.add(attribute);
          }
        }
        break;
      case XMLStreamConstants.END_ELEMENT:
        current = (DefaultMutableTreeNode) current.getParent();
        break;
      case XMLStreamConstants.CHARACTERS:
        if (!reader.isWhiteSpace()) {
          DefaultMutableTreeNode data = new DefaultMutableTreeNode("CD:"
              + reader.getText());
          current.add(data);
        }
        break;
      case XMLStreamConstants.DTD:
        DefaultMutableTreeNode dtd = new DefaultMutableTreeNode("DTD:" + reader.getText());
        current.add(dtd);
        break;
      case XMLStreamConstants.SPACE:
        break;
      case XMLStreamConstants.ruMENT:
        DefaultMutableTreeNode comment = new DefaultMutableTreeNode(reader.getText());
        current.add(comment);
        break;
      default:
        System.out.println(type);
      }
    }
  }
}

Validate Stax

 
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
 * identifying information: "Portions Copyrighted [year]
 * [name of copyright owner]"
 * 
 * Contributor(s):
 * 
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don"t indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */
/*
 * Validate.java
 *
 * Created on May 28, 2005, 3:02 PM
 */
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import javax.xml.XMLConstants;
import javax.xml.stream.XMLEventReader;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLOutputFactory;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.Validator;
/**
 * 
 * @author pv156767
 */
public class ValidateStax {
  /**
   * @param args
   *          the command line arguments
   */
  public static void main(String[] args) {
    try {
      // TODO code application logic here
      SchemaFactory sf = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
      System.out.println("schema factory instance obtained is " + sf);
      Schema schema = sf.newSchema(new File(args[0]));
      System.out.println("schema obtained is = " + schema);
      // Get a Validator which can be used to validate instance document against
      // this grammar.
      Validator validator = schema.newValidator();
      // Validate this instance document against the Instance document supplied
      String fileName = args[1].toString();
      String fileName2 = args[2].toString();
      javax.xml.transform.Result xmlResult = new javax.xml.transform.stax.StAXResult(
          XMLOutputFactory.newInstance().createXMLStreamWriter(new FileWriter(fileName2)));
      javax.xml.transform.Source xmlSource = new javax.xml.transform.stax.StAXSource(
          getXMLEventReader(fileName));
      // validator.validate(new StreamSource(args[1]));
      validator.validate(xmlSource, xmlResult);
    } catch (Exception ex) {
      ex.printStackTrace();
      System.out.println("GET CAUSE");
      ex.getCause().fillInStackTrace();
    }
  }
  private static XMLEventReader getXMLEventReader(String filename) {
    XMLInputFactory xmlif = null;
    XMLEventReader xmlr = null;
    try {
      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);
      FileInputStream fis = new FileInputStream(filename);
      xmlr = xmlif.createXMLEventReader(filename, fis);
    } catch (Exception ex) {
      ex.printStackTrace();
    }
    return xmlr;
  }
}