I copied following code from
http://www.java2s.com/Code/Java/XML...----------------------
// XmlTreeViewerSax.java
----------------------
/*
* =============================================================================
* Copyright (c) 1998-2005 Jeffrey M. Hunter. All rights reserved.
*
* All source code and material located at the Internet address of
* http://www.idevelopment.info is the copyright of Jeffrey M. Hunter, 2005 and
* is protected under copyright laws of the United States. This source code may
* not be hosted on any other site without my express, prior, written
* permission. Application to host any of the material elsewhere can be made by
* contacting me at jhunter@idevelopment.info.
*
* I have made every effort and taken great care in making sure that the source
* code and other content included on my web site is technically accurate, but I
* disclaim any and all responsibility for any loss, damage or destruction of
* data or any other property which may arise from relying on it. I will in no
* case be liable for any monetary damages arising from such loss, damage or
* destruction.
*
* As with any code, ensure to test this code in a development environment
* before attempting to run it in production.
* =============================================================================
*/
// Core Java APIs
import java.io.IOException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
// SAX
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.XMLReaderFactory;
// Swing
import java.awt.*;
import javax.swing.*;
import javax.swing.tree.*;
/**
----------------------
* Application that allows users to view the contents of an XML do*****ent as
* a graphical tree. Also provides an example that demonstrates SAX events
* and associated callback methods that can be used to perform action within
* the parsing of an XML do*****ent.
*
* COMPILE:
* javac -classpath $JAVALIB/xercesImpl.jar XmlTreeViewerSax.java
*
* javac -classpath %JAVALIB%\xercesImpl.jar XmlTreeViewerSax.java
*
*
* RUN PROGRAM:
* java -classpath $JAVALIB/xercesImpl.jar:. XmlTreeViewerSax Tablespaces.xml
*
* java -classpath %JAVALIB%\xercesImpl.jar;. XmlTreeViewerSax Tablespaces.xml
*
----------------------
* @version 1.0
* @author Jeffrey M. Hunter (jhunter@idevelopment.info)
* @author http://www.idevelopment.info
----------------------
*/
public class XmlTreeViewerSax extends JFrame {
// Default parser to use
private String vendorParserClass =
"org.apache.xerces.parsers.SAXParser";
// The base tree to render
private JTree jTree;
// Tree Model to use
DefaultTreeModel defaultTreeModel;
public XmlTreeViewerSax() {
// Handle Swing setup
super("SAX Tree Viewer");
setSize(600, 450);
}
public void init(String xmlURI)
throws IOException, SAXException {
DefaultMutableTreeNode base = new DefaultMutableTreeNode(
"XML Do*****ent: " + xmlURI);
// Build Tree Model
defaultTreeModel = new DefaultTreeModel(base);
jTree = new JTree(defaultTreeModel);
// Construct the tree hierarchy
buildTree(defaultTreeModel, base, xmlURI);
// Display the results
getContentPane().add(new JScrollPane(jTree), BorderLayout.CENTER);
}
public void buildTree( DefaultTreeModel treeModel
, DefaultMutableTreeNode base
, String xmlURI)
throws IOException, SAXException {
// Create instances needed for parsing
XMLReader reader = XMLReaderFactory.createXMLReader(vendorParserClass);
// Register content handler
// Register error handler
// Parse
InputSource inputSource = new InputSource(xmlURI);
reader.parse(inputSource);
}
/**
* Sole entry point to the class and application.
* @param args Array of String arguments.
*/
public static void main(String[] args) {
if (args.length != 1) {
System.err.println(
"Usage: java XmlTreeViewerSax " +
"[XML Do*****ent URI]"
);
System.exit(1);
}
String do*****entURI = args[0];
try {
XmlTreeViewerSax viewer = new XmlTreeViewerSax();
viewer.init(do*****entURI);
viewer.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
}
Computer Programmer
