Java/XML/JDOM

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Accessing Attributes Using JDOM

   

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.util.Iterator;
import java.util.List;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.adapters.XercesDOMAdapter;
import org.jdom.input.DOMBuilder;
public class JDOMCreateExample {
  private static DOMBuilder builder = null;
  public static void main(String args[]) throws Exception, FileNotFoundException {
    XercesDOMAdapter xercAdapter = new XercesDOMAdapter();
    org.w3c.dom.Document w3Dom = xercAdapter.getDocument(new FileInputStream("games.xml"), false);
    builder = new DOMBuilder("org.jdom.adapters.XercesDOMAdapter");
    Document doc = builder.build(w3Dom);
    List childs = doc.getRootElement().getChildren("game");
    Iterator itr = childs.iterator();
    while (itr.hasNext()) {
      Element child = (Element) itr.next();
      System.out.println(child.getName() + " = " + child.getText());
      System.out.println(child.getAttributeValue("genre"));
    }
  }
}





Add elements to root element

   
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.output.XMLOutputter;
public class MainClass {
    public static void main(String[] args) throws Exception {
        Element rootElement = new Element("root");
        Document document = new Document(rootElement);
        for (int i = 0; i < 10000; i++) {
            rootElement.addContent(new Element("blah"));
            rootElement.addContent(new Element("blah"));
            rootElement.addContent(new Element("blah").setText("foo"));
            rootElement.addContent(new Element("blah"));
        }
        
        new XMLOutputter().output(document, System.out);
    }
}





Adding an Attribute Using JDOM

   
import org.jdom.Document;
import org.jdom.Element;
public class MainClass {
  public static void main(String args[]) {
    Document doc = new Document(new Element("games"));
    Element newGame = new Element("game").setText("Final Fantasy");
    doc.getRootElement().addContent(newGame);
    newGame.setAttribute("genre", "rpg");
  }
}





Adding an Element Using JDOM

   
import org.jdom.Document;
import org.jdom.Element;
public class MainClass {
  public static void main(String args[]) {
    Document doc = new Document(new Element("games"));
    Element newGame = new Element("game").setText("Final Fantasy");
    doc.getRootElement().addContent(newGame);
  }
}





Create document from jdom

   
import java.io.IOException;
import org.jdom.rument;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.output.Format;
import org.jdom.output.XMLOutputter;
public class MainClass {
  public static void main(String[] args) throws IOException {
    Document doc = new Document(new Element("r").setAttribute("attribute", "value").addContent(
        new Element("inner")).addContent(new Comment("comment text"))
        .addContent("some inline text").addContent(new Element("inner2")));
    new XMLOutputter(Format.getPrettyFormat()).output(doc, System.out);
  }
}





Creating a Document Using JDOM

   
import org.jdom.Document;
import org.jdom.Element;
public class MainClass {
  public static void main(String args[]) {
    Document doc = new Document(new Element("games"));
  }
}





extends org.jdom.Element

   
import org.jdom.Element;
import org.jdom.Namespace;
public class ORAElement extends Element {
    private static final Namespace ORA_NAMESPACE =
        Namespace.getNamespace("ora", "http://www.jexp.ru");
    public ORAElement(String name) {
        super(name, ORA_NAMESPACE);
    }
    public ORAElement(String name, Namespace ns) {
        super(name, ORA_NAMESPACE);
    }
    public ORAElement(String name, String uri) {
        super(name, ORA_NAMESPACE);
    }
    public ORAElement(String name, String prefix, String uri) {
        super(name, ORA_NAMESPACE);
    }
}





General XML Utility Functions For JDOM

 
package net.firstpartners.nounit.utility;
/**
 * Title:        NoUnit - Identify Classes that are not being unit Tested
 *
 * Copyright (C) 2001  Paul Browne , FirstPartners.net
 *
 *
 * This program is free software; you can redistribute it and/or 
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * @author Paul Browne
 * @version 0.6
 */
import java.io.*;
import java.util.*;
import java.util.zip.*;
import org.jdom.*;
import org.jdom.output.*;
import org.jdom.input.*;

/**
 * General XML Utility Functions
 */
public class XmlUtil {
    
  /**
   * indexes the nodes in the document that is passed in , via a HashMap mapping
   * mapping is in the format <index> as String , handle to <element> of node<BR>
   * Strings are used as they are better lookup in the hashmap.
   * @param inXmlDocument to generated the hashmap from
   * @param uniqueAttribute to do the index on (i.e. key in HashMap). Examples
   *        of uniqueAttributes are id"s or names.
   * @return HashMap containing mappings
   */
  public static HashMap getNodeIndex(Document inXmlDocument, 
                                        String uniqueAttribute) {
    //Internal Variables
    int stackPointer=0;
    String locationId =null;
    Attribute tmpAttribute=null;
    Element thisElement=null;
    ListIterator deepestList=null;
    HashMap mappings = new HashMap();
    List stack = new Vector();
    //Get the list information for the entire document
    stack.add(inXmlDocument.getContent().listIterator());
    //Loop though the elements on list
    while (!stack.isEmpty()){
      //Get the last list on the stack
      deepestList = (ListIterator)stack.get(stack.size()-1);
      //Does this list have more elements?
      if (deepestList.hasNext()) {
        //if so Get Next element from this list
        thisElement = (Element)deepestList.next();
        //Add Mapping for this element to hashtable
        tmpAttribute = thisElement.getAttribute(uniqueAttribute);
        //Attibute can be null for non folder elements (e.g. root element) - if so ignore
        if (tmpAttribute!=null) {
          locationId= tmpAttribute.getValue();
          if ((locationId!=null)&&(locationId!="")) {
             mappings.put(locationId.toString(),thisElement);
          }
        } //end add mapping
        //does this list have children ?
        if(thisElement.hasChildren()){
          //if so add to the stack
          stackPointer++;
          stack.add(thisElement.getChildren().listIterator());
        }
      }
      else
      {
        //if not , remove this list from the stack
        stack.remove(stackPointer);
        stackPointer--;
      } // end if stack has more elements
    }
    return mappings;
  }
  /**
   * gets all elements in the XML Document Being Passed in <BR>
   * @param inXmlDocument to generated the hashmap from
   * @return nodeList containing nodes
   */
  public static HashSet getAllNodes(Document inXmlDocument) {
    //Internal Variables
    int stackPointer=0;
    int index=1;
    String locationId=null;
    Element currentElement=null;
    Element parentElement=null;
    Element thisElement=null;
    Attribute tmpAttribute=null;
    List elementList=null;
    ListIterator deepestList=null;
    HashMap mappings = new HashMap();
    HashSet nodeList = new HashSet();
    List stack = new Vector();              //Implements list interface
    //Get the list information for the entire document - kick start loop
    stack.add(inXmlDocument.getContent().listIterator());
    //Loop though the elements on list
    while (!stack.isEmpty()){
      //Get the last list on the stack
      deepestList = (ListIterator)stack.get(stack.size()-1);
      //Does this list have more elements?
      if (deepestList.hasNext()) {
        //if so Get Next element from this list
        thisElement = (Element)deepestList.next();
        // add this element to the list
        nodeList.add(thisElement);
 
        //does this list have children ?
        if(thisElement.hasChildren()){
          //if so add to the stack
          stackPointer++;
          stack.add(thisElement.getChildren().listIterator());
        }
      }
      else
      {
        //if not , remove this list from the stack
        stack.remove(stackPointer);
        stackPointer--;
      } // end if stack has more elements
    }
    return nodeList;
  }
  
  /**
   * Search for Nodes within Jdom Document<BR>
   * @param inDocumentToSearch XML-JDOM Document  
   * @param  uniqueIdentifierName we can use to index the document (unique
   *    attribute like id or name present on the node we are searching for)
   * @param uniqueIdentifierToFind in the indexed document
   */
   public static Element findNode(Document inDocumentToSearch 
                            , String uniqueIdentifierName
                            , String uniqueIdentifierToFind) {
       
        // index document                        
        HashMap index = getNodeIndex(inDocumentToSearch, 
                                     uniqueIdentifierName);
                                        
        // Now get required element from index
        return (Element)index.get(uniqueIdentifierToFind);
                                
                        
   }
}





Get child from root

   
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.input.SAXBuilder;
import org.jdom.output.Format;
import org.jdom.output.XMLOutputter;
public class MainClass {
  public static void main(String[] args) throws Exception {
    SAXBuilder builder = new SAXBuilder();
    Document books = builder.build("books.xml");
    Document onebook = builder.build("onebook.xml");
    Element bookToAdd = onebook.getRootElement().getChild("book");
    books.getRootElement().addContent(bookToAdd);
    new XMLOutputter(Format.getPrettyFormat()).output(books, System.out);
  }
}





Iterate through elements

   
import java.util.Iterator;
import org.jdom.Content;
import org.jdom.Document;
import org.jdom.Text;
import org.jdom.input.SAXBuilder;
public class MainClass {
  public static void main(String[] args) throws Exception {
    SAXBuilder builder = new SAXBuilder();
    Document doc = builder.build("mixed.xml");
    for (Iterator it = doc.getRootElement().getContent().iterator(); it.hasNext();) {
      Content content = (Content) it.next();
      if (content instanceof Text) {
        System.out.println("[Text: " + ((Text) content).getTextNormalize());
      } else {
        System.out.println(content.toString());
      }
    }
  }
}





JDom: Locating a speech with the findCharactersFirstSpeech() method

   

import java.io.File;
import java.util.List;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.input.SAXBuilder;
public class MainClass {
  public static void main(String[] args) throws Exception{
      String characterName ="asdf";
      SAXBuilder builder = new SAXBuilder();
      Document document = builder.build(new File("r.xml"));
      List actList = document.getRootElement().getChildren("ACT");
      allDone: for (int act = 0; act < actList.size(); act++) {
        List sceneList = ((Element) actList.get(act)).getChildren("SCENE");
        for (int scene = 0; scene < sceneList.size(); scene++) {
          List speechList = ((Element) sceneList.get(scene)).getChildren("SPEECH");
          for (int speech = 0; speech < speechList.size(); speech++) {
            if (characterName.equalsIgnoreCase(((Element) speechList.get(speech))
                .getChildText("SPEAKER"))) {
              System.out.println(characterName);
              break allDone;
            }
          }
        }
      }
  }
}





JDOM: transform

   
import java.io.File;
import java.io.FileWriter;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamSource;
import org.jdom.Document;
import org.jdom.input.SAXBuilder;
import org.jdom.output.XMLOutputter;
import org.jdom.transform.JDOMResult;
import org.jdom.transform.JDOMSource;
public class Transform2 {
  public static void main(String[] args) throws Exception {
    SAXBuilder builder = new SAXBuilder();
    Document document = builder.build(new File("r.xml"));
    Transformer transformer = TransformerFactory.newInstance().newTransformer(
        new StreamSource("program.xsl"));
    JDOMResult out = new JDOMResult();
    transformer.transform(new JDOMSource(document), out);
    XMLOutputter xmlOutputter = new XMLOutputter();
    xmlOutputter.output(out.getDocument(), new FileWriter("JDOMAlteredRichard.html"));
  }
}





JDOM Util

 
/*
 * This file is made available under the terms of the LGPL licence.
 * This licence can be retrieved from http://www.gnu.org/copyleft/lesser.html.
 * The source remains the property of the YAWL Foundation.  The YAWL Foundation is a
 * collaboration of individuals and organisations who are committed to improving
 * workflow technology.
 */

import org.jdom.*;
import org.jdom.input.SAXBuilder;
import org.jdom.output.*;
import org.apache.log4j.Logger;
import java.io.*;

/**
 * Some static utility methods for coverting JDOM Documents and Elements
 * to Strings and files & vice versa.
 *
 *  @author Michael Adams
 *  04/07/2006
 *
 *  Last date: 22/06/08
 */
 public class JDOMUtil {
    private static Logger _log = Logger.getLogger("org.yawlfoundation.yawl.util.JDOMUtil");
    /****************************************************************************/
    public static String documentToString(Document doc) {
        if (doc == null) return null;
        XMLOutputter out = new XMLOutputter(Format.getPrettyFormat());
        return out.outputString(doc);
    }
    /****************************************************************************/
    public static String elementToString(Element e) {
        if (e == null) return null ;
        XMLOutputter out = new XMLOutputter(Format.getPrettyFormat());
        return out.outputString(e);
    }
    /****************************************************************************/
    public static String elementToStringDump(Element e) {
        if (e == null) return null ;
        XMLOutputter out = new XMLOutputter(Format.getCompactFormat());
        return out.outputString(e);
    }
    /****************************************************************************/
    public static Document stringToDocument(String s) {
        try {
           if (s == null) return null ;
           return new SAXBuilder().build(new StringReader(s));
        }
        catch (JDOMException jde) {
            _log.error("JDOMException converting to Document, String = " + s , jde);
            return null ;
        }
        catch (IOException ioe) {
            _log.error("IOException converting to Document, String = " + s, ioe);
            return null ;
        }
    }
    /****************************************************************************/
    public static Element stringToElement(String s) {
        if (s == null) return null ;
        Document doc = stringToDocument(s);
        return doc.getRootElement();
    }
    /****************************************************************************/
    public static Document fileToDocument(String path) {
       try {
           if (path == null) return null ;
           return new SAXBuilder().build(new File(path));
       }
       catch (JDOMException jde) {
           _log.error("JDOMException loading file into Document, filepath = " + path , jde);
           return null ;
       }
       catch (IOException ioe) {
           _log.error("IOException loading file into Document, filepath = " + path, ioe);
           return null ;
       }
    }
    /****************************************************************************/
         /** saves a JDOM Document to a file */
     public static void documentToFile(Document doc, String path)   {
        try {
           FileOutputStream fos = new FileOutputStream(path);
           XMLOutputter xop = new XMLOutputter(Format.getPrettyFormat());
           xop.output(doc, fos);
           fos.flush();
           fos.close();
      }
      catch (IOException ioe){
          _log.error("IO Exeception in saving Document to file, filepath = " + path, ioe) ;
      }
   }
    /****************************************************************************/
    public static String getDefaultValueForType(String dataType) {
        if (dataType == null) return "null";
        else if (dataType.equalsIgnoreCase("boolean")) return "false" ;
        else if (dataType.equalsIgnoreCase("string")) return "" ;
        else return "0";
    }
    /****************************************************************************/
    public static String encodeEscapes(String s) {
        if (s == null) return s;
        return s.replaceAll("&", "&amp;")
                .replaceAll("<", "&lt;")                
                .replaceAll(">", "&gt;")
                .replaceAll("\"", "&quot;")
                .replaceAll(""", "&apos;") ;
    }
    public static String decodeEscapes(String s) {
        if (s == null) return s;
        return s.replaceAll("&amp;", "&")
                .replaceAll("&lt;","<")               
                .replaceAll("&gt;", ">")
                .replaceAll("&quot;","\"")
                .replaceAll("&apos;", """) ;
    }
    /****************************************************************************/
    public static String formatXMLString(String s) {
        if (s == null) return null;
        if (s.startsWith("<?xml"))
            return documentToString(stringToDocument(s));
        else
            return elementToString(stringToElement(s));
    }
    public static String formatXMLStringAsDocument(String s) {
        return documentToString(stringToDocument(s));
    }
    public static String formatXMLStringAsElement(String s) {
        return elementToString(stringToElement(s));
    }

} //ends





List an XML file after building it into a JDOM Document

  
/*
 * Copyright (c) Ian F. Darwin, http://www.darwinsys.ru/, 1996-2002.
 * All rights reserved. Software written by Ian F. Darwin and others.
 * $Id: LICENSE,v 1.8 2004/02/09 03:33:38 ian Exp $
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS""
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * 
 * Java, the Duke mascot, and all variants of Sun"s Java "steaming coffee
 * cup" logo are trademarks of Sun Microsystems. Sun"s, and James Gosling"s,
 * pioneering role in inventing and promulgating (and standardizing) the Java 
 * language and environment is gratefully acknowledged.
 * 
 * The pioneering role of Dennis Ritchie and Bjarne Stroustrup, of AT&T, for
 * inventing predecessor languages C and C++ is also gratefully acknowledged.
 */
import java.io.File;
import org.jdom.Document;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import org.jdom.output.XMLOutputter;
/**
 * List an XML file after building it into a JDOM Document.
 * Notice it is easier than using SAX or DOM directly.
 */
public class JDOMLister {
  public static void main(String[] args) { 
    try {
      SAXBuilder b = new SAXBuilder(true);  // true -> validate
      // Create a JDOM document.
      Document doc = b.build(new File("people.xml"));
      // Create an output formatter, and have it write the doc.
      new XMLOutputter().output(doc, System.out);
    } catch (JDOMException jex) {
      System.out.print("PARSE ERROR: " + jex.getMessage());
    } catch (Exception ex) {
      ex.printStackTrace();
    }
  }
}
// demo xml file
/*
<?xml version="1.0"?>
<people>
<person>
  <name>Ian Darwin</name>
  <email>http://www.darwinsys.ru/</email>
  <country>Canada</country>
</person>
<person>
  <name>Another Darwin</name>
  <email type="intranet">afd@node1</email>
  <country>Canada</country>
</person>
</people>

*/





Make up and write an XML document, using JDOM

  
/*
 * Copyright (c) Ian F. Darwin, http://www.darwinsys.ru/, 1996-2002.
 * All rights reserved. Software written by Ian F. Darwin and others.
 * $Id: LICENSE,v 1.8 2004/02/09 03:33:38 ian Exp $
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS""
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * 
 * Java, the Duke mascot, and all variants of Sun"s Java "steaming coffee
 * cup" logo are trademarks of Sun Microsystems. Sun"s, and James Gosling"s,
 * pioneering role in inventing and promulgating (and standardizing) the Java 
 * language and environment is gratefully acknowledged.
 * 
 * The pioneering role of Dennis Ritchie and Bjarne Stroustrup, of AT&T, for
 * inventing predecessor languages C and C++ is also gratefully acknowledged.
 */
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.output.XMLOutputter;
/** Make up and write an XML document, using JDOM
 * @author Ian Darwin, http://www.darwinsys.ru/
 * @version $Id: DocWriteJDOM.java,v 1.4 2004/02/09 03:34:10 ian Exp $
 */
public class DocWriteJDOM {
  public static void main(String[] av) throws Exception {
    DocWriteJDOM dw = new DocWriteJDOM();
    Document doc = dw.makeDoc();
    // Create an output formatter, and have it write the doc.
    new XMLOutputter().output(doc, System.out);
  }
  /** Generate the XML document */
  protected Document makeDoc() throws Exception {
      Document doc = new Document(new Element("Poem"));
      doc.getRootElement().
        addContent(new Element("Stanza").
          addContent(new Element("Line").
              setText("Once, upon a midnight dreary")).
          addContent(new Element("Line").
              setText("While I pondered, weak and weary")));
      return doc;
  }
}
// demo xml file
/*
<?xml version="1.0"?>
<people>
<person>
  <name>Ian Darwin</name>
  <email>http://www.darwinsys.ru/</email>
  <country>Canada</country>
</person>
<person>
  <name>Another Darwin</name>
  <email type="intranet">afd@node1</email>
  <country>Canada</country>
</person>
</people>

*/





NamespaceTest with JDOM

   
import java.io.File;
import java.io.FileOutputStream;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.Namespace;
import org.jdom.input.SAXBuilder;
import org.jdom.output.Format;
import org.jdom.output.XMLOutputter;
public class MainClass {
  public static void main(String[] args) throws Exception {
    Namespace nsShort = Namespace.getNamespace("short");
    Namespace nsWeird = Namespace.getNamespace("e", "w");
    Document doc = new Document();
    Element easy = new Element("easy", nsShort);
    doc.setRootElement(easy);
    Element b = new Element("b", nsShort);
    Element c = new Element("c", nsShort);
    easy.addContent(b);
    b.addContent(c);
    Element d = new Element("d", nsShort);
    Element f = new Element("f", nsWeird);
    f.addContent(new Element("g", nsShort));
    d.addContent(f);
    easy.addContent(d);
    new XMLOutputter(Format.getPrettyFormat()).output(doc, new FileOutputStream("short.xml"));
    SAXBuilder sb = new SAXBuilder();
    sb.setFeature("http://xml.org/sax/features/namespaces", false);
    sb.setFeature("http://xml.org/sax/features/namespace-prefixes", false);
    Document doc2 = sb.build(new File("short.xml"));
    new XMLOutputter(Format.getPrettyFormat()).output(doc2, System.out);
  }
}





Outputting a Document Using XMLOutputter

   
import java.io.IOException;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.output.XMLOutputter;
public class MainClass {
  public static void main(String args[]) throws IOException {
    Document doc = new Document(new Element("games"));
    Element newGame = new Element("game").setText("Final Fantasy");
    doc.getRootElement().addContent(newGame);
    newGame.setAttribute("genre", "rpg");
    XMLOutputter domstream = new XMLOutputter();
    domstream.output(doc, System.out);
  }
}





Parsing with JDOM

   
import java.io.FileInputStream;
import java.io.IOException;
import java.io.FileNotFoundException;
import org.jdom.Document;
import org.jdom.JDOMException;
import org.jdom.adapters.XercesDOMAdapter;
import org.jdom.input.DOMBuilder;
import org.jdom.output.XMLOutputter;
public class JDOMCreateExample {
  private static DOMBuilder builder = null;
  public static void main(String args[]) throws IOException, FileNotFoundException {
    XercesDOMAdapter xercAdapter = new XercesDOMAdapter();
    org.w3c.dom.Document w3Dom = xercAdapter.getDocument(new FileInputStream("games.xml"), false);
    builder = new DOMBuilder("org.jdom.adapters.XercesDOMAdapter");
    Document doc = builder.build(w3Dom);
  }
}





Read an XML document using JDOM

  
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.util.List;
public class Main {
  public static void main(String[] args) {
    String data = "<root><row><column name="username" length="6">admin</column>"
        + "<column name="password" length="1">p</column></row><row>"
        + "<column name="username" length="6">j</column>"
        + "<column name="password" length="8">q</column></row></root>";
    SAXBuilder builder = new SAXBuilder();
    Document document = builder.build(new ByteArrayInputStream(data.getBytes()));
    Element root = document.getRootElement();
    List rows = root.getChildren("row");
    for (int i = 0; i < rows.size(); i++) {
      Element row = (Element) rows.get(i);
      List columns = row.getChildren("column");
      for (int j = 0; j < columns.size(); j++) {
        Element column = (Element) columns.get(j);
        String name = column.getAttribute("name").getValue();
        String value = column.getText();
        int length = column.getAttribute("length").getIntValue();
        System.out.println("name = " + name);
        System.out.println("value = " + value);
        System.out.println("length = " + length);
      }
    }
  }
}





Simple demo of JDOM

  
/*
 * Copyright (c) Ian F. Darwin, http://www.darwinsys.ru/, 1996-2002.
 * All rights reserved. Software written by Ian F. Darwin and others.
 * $Id: LICENSE,v 1.8 2004/02/09 03:33:38 ian Exp $
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS""
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * 
 * Java, the Duke mascot, and all variants of Sun"s Java "steaming coffee
 * cup" logo are trademarks of Sun Microsystems. Sun"s, and James Gosling"s,
 * pioneering role in inventing and promulgating (and standardizing) the Java 
 * language and environment is gratefully acknowledged.
 * 
 * The pioneering role of Dennis Ritchie and Bjarne Stroustrup, of AT&T, for
 * inventing predecessor languages C and C++ is also gratefully acknowledged.
 */
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import org.jdom.rument;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.ProcessingInstruction;
import org.jdom.input.DOMBuilder;
import org.jdom.input.SAXBuilder;
import org.jdom.output.DOMOutputter;
/*
 * Simple demo of JDOM
 */
public class JDOMDemo {
    public static void main(String[] args) {
  
    // Must be at least one file or URL argument
        if (args.length == 0) {
            System.out.println("Usage: java JDOMDemo URL [...]"); 
        } 
        
        SAXBuilder saxBuilder = new SAXBuilder();
        DOMBuilder domBuilder = new DOMBuilder();
                
        for (int i = 0; i < args.length; i++) {
      
            try {
                Document jdomDocument = saxBuilder.build(args[i]);
                DOMOutputter domOutputter = new DOMOutputter();
                /*
                 * Test getting DOM Document from JDOM Document
                org.w3c.dom.Document domDocument = domOutputter.output(doc);
                 */
                /*
                 * Test getting DOM Element from JDOM Element
                 */
                org.w3c.dom.Element domElement = 
                  domOutputter.output(jdomDocument.getRootElement());
                /*
                 * Test getting JDOM Element from DOM Element
                 */
                org.jdom.Element jdomElement = domBuilder.build(domElement);
                demo(jdomElement);
            } catch (JDOMException e) { // indicates a well-formedness or other error
                System.out.println(args[i] + " is not a well formed XML document.");
                System.out.println(e.getMessage());
            } catch (IOException ex) {
        System.out.println("Input or Output error:" + 
          args[i] + ": " + ex);
      }     
        }
    }
    public static void demo(Document doc) {
        List children = doc.getContent();
        Iterator iterator = children.iterator();
        while (iterator.hasNext()) {
            Object o = iterator.next();
            if (o instanceof Element) {
                demo((Element) o);
            }
            else if (o instanceof Comment)
        doComment((Comment) o);
            else if (o instanceof ProcessingInstruction) 
        doPI((ProcessingInstruction) o);
        }
    }     
    public static void demo(Element element) {
    System.out.println("Element " + element);
        List attributes = element.getAttributes();
        List children = element.getContent();
        Iterator iterator = children.iterator();
        while (iterator.hasNext()) {
            Object o = iterator.next();
            if (o instanceof Element) {
                demo((Element) o);
            }
            else if (o instanceof Comment) 
        doComment((Comment)o);
            else if (o instanceof ProcessingInstruction) 
        doPI((ProcessingInstruction)o);
            else if (o instanceof String) {
                System.out.println("String: " + o);
            }   
        }
    }  
  public static void doComment(Comment c) {
    System.out.println("Comment: " + c);
  }
  public static void doPI(ProcessingInstruction pi) {
    System.out.println("PI: " + pi);
  }
}
// demo xml file
/*
<?xml version="1.0"?>
<people>
<person>
  <name>Ian Darwin</name>
  <email>http://www.darwinsys.ru/</email>
  <country>Canada</country>
</person>
<person>
  <name>Another Darwin</name>
  <email type="intranet">afd@node1</email>
  <country>Canada</country>
</person>
</people>

*/





Simple example of using JDOM

  
import java.util.Iterator;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.input.SAXBuilder;
/**
 * @author robh
 *  
 */
public class HelloPeopleJDOM {
    public static void main(String[] args) throws Exception {
        SAXBuilder builder = new SAXBuilder();
        Document doc = builder.build("./src/data.xml");
        StringBuffer output = new StringBuffer();
        // create the basic HTML output
        output.append("<html>\n").append(
                "<head>\n<title>\nPerson List</title>\n</head>\n").append(
                "<body>\n").append("<ul>\n");
        Iterator itr = doc.getRootElement().getChildren().iterator();
        while (itr.hasNext()) {
            Element elem = (Element) itr.next();
            output.append("<li>");
            output.append(elem.getAttribute("lastName").getValue());
            output.append(", ");
            output.append(elem.getAttribute("firstName").getValue());
            output.append("</li>\n");
        }
        // create the end of the HTML output
        output.append("</ul>\n</body>\n</html>");
        System.out.println(output.toString());
    }
}





Use JDOM to build a document

  
import org.jdom.*;
import org.jdom.input.*;
import org.jdom.output.*;
import java.util.*;
import java.io.*;
public class JDOMTest {
  public static void showBooks( Element root ) {
       List books = root.getChildren( "book" );
       for( Iterator i=books.iterator(); i.hasNext(); ) {
         Element book = ( Element )i.next();
         System.out.println( "Book: " + book.getAttributeValue( "category" ) + ", " +
                             book.getChildTextTrim( "title" ) + ", " +
                             book.getChildTextTrim( "author" ) + ", " + 
                             book.getChildTextTrim( "price" ) );
       }
  }

  public static void main( String[] args ) throws Exception{ 
       SAXBuilder builder = new SAXBuilder();
       Document doc = builder.build( "book.xml" );
       Element root = doc.getRootElement();
       System.out.println( "Book List Before: " );
       showBooks( root );
       // Add a new book
       Element newBook = new Element( "book" );
       newBook.setAttribute( "category", "fiction" );
       Element newTitle = new Element( "title" );
       newTitle.addContent( "Desecration" );
       Element newAuthor = new Element( "author" );
       newAuthor.addContent( "Tim LaHaye" );
       Element newPrice = new Element( "price" );
       newPrice.addContent( "19.95" );
       newBook.addContent( newTitle );
       newBook.addContent( newAuthor );
       newBook.addContent( newPrice );
       root.addContent( newBook );
       System.out.println( "Book List After: " );
       showBooks( root );
       XMLOutputter out = new XMLOutputter( "  ", true );
       out.output( root, System.out );
  }
}
<books> 
  <book category="fiction"> 
    <title>title 1</title> 
    <author>Tim Lahaye</author> 
    <price>14.95</price> 
  </book> 
  <book category="science fiction"> 
    <title>title 2</title> 
    <author>Tim Lahaye</author> 
    <price>14.95</price> 
  </book> 
</books>





Use JDOM to change the element text

   
import java.io.File;
import java.io.FileWriter;
import java.util.List;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.input.SAXBuilder;
import org.jdom.output.XMLOutputter;
public class MainClass {
  public static void main(String[] args) throws Exception {
    SAXBuilder builder = new SAXBuilder();
    Document document = builder.build(new File("r.xml"));
    Element prologue, title, speech;
    prologue = new Element("P");
    List actList = document.getRootElement().getChildren("ACT");
    document.getRootElement().removeChildren("ACT");
    document.getRootElement().addContent(prologue);
    for (int act = 0; act < actList.size(); act++) {
      document.getRootElement().addContent((Element) actList.get(act));
    }
    title = new Element("TITLE");
    title.setText("test");
    prologue.addContent(title);
    speech = new Element("SPEECH");
    speech.setText("test");
    prologue.addContent(speech);
    XMLOutputter xmlOutputter = new XMLOutputter();
    xmlOutputter.output(document, new FileWriter("rewrite.xml"));
  }
}





Use SAXBuilder from JDOM

   
import java.util.Iterator;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.input.SAXBuilder;
public class MainClass {
  public static void main(String[] args) throws Exception {
    Document doc = new SAXBuilder().build("books.xml");
    Element books = doc.getRootElement();
    Iterator it = books.getChildren().iterator();
    while (it.hasNext()) {
      Element book = (Element) it.next();
      System.out.println(book.getChildText("name") + " was published in "
          + book.getChildText("pubDate"));
    }
  }
}





Use Unchecked JDOM Factory

   
import org.jdom.Document;
import org.jdom.UncheckedJDOMFactory;
import org.jdom.input.SAXBuilder;
import org.xml.sax.XMLReader;
import com.sun.org.apache.xerces.internal.parsers.XMLParser;
public class UncheckedFactorySample {
    public static void main(String[] args) throws Exception {
       
        SAXBuilder builder = new SAXBuilder();
        builder.setFeature("http://xml.org/sax/features/validation", false);
        builder.setFactory(new UncheckedJDOMFactory());
        Document doc = builder.build("bad.xml");
        System.out.println(doc.getRootElement().getName());
    }
}





Use XPath in servlet

   
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.jdom.Document;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import org.jdom.xpath.XPath;
public class PostServlet extends HttpServlet {
    private SAXBuilder builder = new SAXBuilder();
    private XPath nameXPath;
    private XPath yearXPath;
    protected void doPost(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
        if (!"text/xml".equals(request.getContentType())) {
            response.getWriter().println("Please post as text/xml.");
        } else {
            try {
                Document doc = builder.build(request.getReader());
                StringBuffer buff = new StringBuffer();
                buff.append("You searched for name "" + nameXPath.valueOf(doc)
                        + """);
                String year = yearXPath.valueOf(doc);
                if (!"notselected".equals(year)) {
                    buff.append(" and year "" + year + """);
                }
                buff.append(".");
                response.getWriter().print(buff.toString());
            } catch (JDOMException e) {
                response.getWriter().print(
                        "Error getting search terms: " + e.getMessage());
            }
        }
    }
    public void init() throws ServletException {
        try {
            nameXPath = XPath.newInstance("/search/name/text()");
            yearXPath = XPath.newInstance("/search/year/text()");
        } catch (JDOMException e) {
            throw new ServletException("Unable to create XPaths", e);
        }
        super.init();
    }
}





XPath with JDOM

   
import java.io.File;
import java.text.SimpleDateFormat;
import java.util.Date;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.Namespace;
import org.jdom.input.SAXBuilder;
import org.jdom.xpath.XPath;
public class MainClass {
  public static void main(String[] args) throws Exception {
    Namespace NS_GUEST = Namespace.getNamespace("g", "uri:c:guest");
    Namespace NS_SCHEDULE = Namespace.getNamespace("s", "uri:c:schedule");
    SAXBuilder builder = new SAXBuilder();
    Document document = builder.build(new File("tds_ns.xml"));
    XPath xPath = XPath.newInstance("/s:schedule/s:show[@date=$date]/g:guest");
    xPath.addNamespace(NS_SCHEDULE);
    xPath.addNamespace(NS_GUEST);
    String formattedDate = new SimpleDateFormat("MM.dd.yy").format(new Date(2006, 5, 14));
    xPath.setVariable("date", formattedDate);
    Element guest = (Element) xPath.selectSingleNode(document);
    System.out.println(guest.getChildText("name", NS_GUEST));
  }
}


Источник — «http://jexp.ru/index.php?title=Java/XML/JDOM&oldid=8799»