javaxmlswingxml-parsingjtree
How to display a specific attribute name and value beside a node in JTree?
I want to display the name and values of an attribute beside the node name in JTree. Can anyone tell me how to do that? Here is the code I use to display the JTree:
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.Event.*;
import java.io.*;
import javax.swing.tree.*;
import org.xml.sax.*;
import org.xml.sax.helpers.*;
import org.apache.xerces.parsers.*;
public class XMLTreeView {
private SAXTreeBuilder saxTree = null;
private static String file = "";
public static void main(String args[]) {
JFrame frame = new JFrame("XMLTreeView: [ games.xml ]");
frame.setSize(400, 400);
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent ev) {
System.exit(0);
}
});
file = "example1.xml";
new XMLTreeView(frame);
}
public XMLTreeView(JFrame frame) {
frame.getContentPane().setLayout(new BorderLayout());
DefaultMutableTreeNode top = new DefaultMutableTreeNode(file);
// DefaultMutableTreeNode top = new DefaultMutableTreeNode("XML Document");
saxTree = new SAXTreeBuilder(top);
try {
SAXParser saxParser = new SAXParser();
saxParser.setContentHandler(saxTree);
saxParser.parse(new InputSource(new FileInputStream(file)));
} catch (Exception ex) {
top.add(new DefaultMutableTreeNode(ex.getMessage()));
}
JTree tree = new JTree(saxTree.getTree());
JScrollPane scrollPane = new JScrollPane(tree);
frame.getContentPane().add("Center", scrollPane);
frame.setVisible(true);
}
}
class SAXTreeBuilder extends DefaultHandler {
private DefaultMutableTreeNode currentNode = null;
private DefaultMutableTreeNode previousNode = null;
private DefaultMutableTreeNode rootNode = null;
public SAXTreeBuilder(DefaultMutableTreeNode root) {
rootNode = root;
}
public void startDocument() {
currentNode = rootNode;
}
public void endDocument() {
}
public void characters(char[] data, int start, int end) {
String str = new String(data, start, end);
if (!str.equals("") && Character.isLetter(str.charAt(0))) {
currentNode.add(new DefaultMutableTreeNode(str));
}
}
public void startElement(String uri, String qName, String lName, Attributes atts) {
previousNode = currentNode;
currentNode = new DefaultMutableTreeNode(lName);
// Add attributes as child nodes //
attachAttributeList(currentNode, atts);
previousNode.add(currentNode);
}
public void endElement(String uri, String qName, String lName) {
if (currentNode.getUserObject().equals(lName)) {
currentNode = (DefaultMutableTreeNode) currentNode.getParent();
}
}
public DefaultMutableTreeNode getTree() {
return rootNode;
}
private void attachAttributeList(DefaultMutableTreeNode node, Attributes atts) {
for (int i = 0; i < atts.getLength(); i++) {
String name = atts.getLocalName(i);
String value = atts.getValue(name);
node.add(new DefaultMutableTreeNode(name + " = " + value));
}
}
}
In the JTree, I want to display the NEType attribute beside NE node,and the equipmentHolderType attribute beside EQHO node
NE NEType=WBTS
EQHO equipmentHolderType=Subrack
I want to have somthing like this:
Here is an example of xml files that I deal with :
<?xml version="1.0" encoding="ISO-8859-1" standalone="yes" ?>
<HWData xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="hw_data.xsd">
<Header xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance" AdaptationName="NWI3BulkUpload" AccessProtocol="NWI3" time="2004-01-01T00:04:02" uploaded="true" version="1.0" />
<NE xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance" vendorName="Nokia Siemens Networks" objectClass="NE" objectClassVersion="1" MOID="NE-RNC-1/DN:NE-WBTS-4183" NEId="PLMN-PLMN/RNC-1/WBTS-4183" NEType="WBTS" operationalState="enabled" locationName="Tun4183" nameFromPlanningSystem="" systemTitle="Nokia Flexi WCDMA Base Station">
<EQHO vendorName="Nokia Siemens Networks" objectClass="EQHO" objectClassVersion="1" MOID="NE-RNC-1/DN:NE-WBTS-4183/EQHO-40448" equipmentHolderId="40448" equipmentHolderType="Subrack" equipmentHolderSpecificType="472100A-40448" identificationCode="472100A" version="101" serialNumber="K9111641678" userLabel="FRGP" state="working">
<UNIT vendorName="Nokia Siemens Networks" objectClass="UNIT" objectClassVersion="1" MOID="NE-RNC-1/DN:NE-WBTS-4183/EQHO-40448/UNIT-158" unitId="158" unitTypeActual="CORE_FRGP" identificationCode="084629A" version="101" serialNumber="K9111641678" />
</EQHO>
<EQHO vendorName="Nokia Siemens Networks" objectClass="EQHO" objectClassVersion="1" MOID="NE-RNC-1/DN:NE-WBTS-4183/EQHO-173" equipmentHolderId="173" equipmentHolderType="Subrack" equipmentHolderSpecificType="471469A-173" identificationCode="471469A" version="" serialNumber="L1104816112" userLabel="FSME" state="working">
<UNIT vendorName="N" objectClass="UNIT" objectClassVersion="1" MOID="NE-RNC-1/DN:NE-WBTS-4183/EQHO-173/UNIT-16" unitId="16" unitTypeActual="CORE_FSME" identificationCode="083833A" version="104" serialNumber="L1104816112" />
<UNIT vendorName="NOKIA SIEMENS NETWORKS" objectClass="UNIT" objectClassVersion="1" MOID="NE-RNC-1/DN:NE-WBTS-4183/EQHO-173/UNIT-225" unitId="225" unitTypeActual="FTLB" identificationCode="471984A" version="103" serialNumber="RY104807867" />
</EQHO>
<EQHO vendorName="NSN" objectClass="EQHO" objectClassVersion="1" MOID="NE-RNC-1/DN:NE-WBTS-4183/EQHO-40192" equipmentHolderId="40192" equipmentHolderType="Subrack" equipmentHolderSpecificType="472083A-40192" identificationCode="472083A" version="101" serialNumber="L6105220714" userLabel="FXDA" state="working" />
</NE>
</HWData>
Solution
You could change the string that is used to construct the tree node:
public void startElement(String uri, String qName, String lName, Attributes atts) {
previousNode = currentNode;
// Use the result of the getNodeText method to construct the tree node.
currentNode = new DefaultMutableTreeNode(getNodeText(lName, atts));
// Add attributes as child nodes //
attachAttributeList(currentNode, atts);
previousNode.add(currentNode);
}
private String getNodeText(final String lName, final Attributes atts) {
final String postfix;
if ("NE".equals(lName) && atts.getValue("NEType") != null)
postfix = " NEType=" + atts.getValue("NEType");
else if ("EQHO".equals(lName) && atts.getValue("equipmentHolderType") != null)
postfix = " equipmentHolderType=" + atts.getValue("equipmentHolderType");
else
postfix = "";
return lName + postfix;
}
This is the complete code I ran:
import java.awt.BorderLayout;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.FileInputStream;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import org.apache.xerces.parsers.SAXParser;
import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.helpers.DefaultHandler;
public class XMLTreeView {
private SAXTreeBuilder saxTree = null;
private static String file = "";
public static void main(String args[]) {
file = "etc\\q29921994\\example2.xml";
JFrame frame = new JFrame("XMLTreeView: [ " + file.substring(file.lastIndexOf("\\") + 1) + " ]");
frame.setSize(400, 400);
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent ev) {
System.exit(0);
}
});
new XMLTreeView(frame);
}
public XMLTreeView(JFrame frame) {
frame.getContentPane().setLayout(new BorderLayout());
DefaultMutableTreeNode top = new DefaultMutableTreeNode(file);
// DefaultMutableTreeNode top = new DefaultMutableTreeNode("XML Document");
saxTree = new SAXTreeBuilder(top);
try {
SAXParser saxParser = new SAXParser();
saxParser.setContentHandler(saxTree);
saxParser.parse(new InputSource(new FileInputStream(file)));
} catch (Exception ex) {
top.add(new DefaultMutableTreeNode(ex.getMessage()));
}
JTree tree = new JTree(saxTree.getTree());
JScrollPane scrollPane = new JScrollPane(tree);
frame.getContentPane().add("Center", scrollPane);
frame.setVisible(true);
}
}
class SAXTreeBuilder extends DefaultHandler {
private DefaultMutableTreeNode currentNode = null;
private DefaultMutableTreeNode previousNode = null;
private DefaultMutableTreeNode rootNode = null;
public SAXTreeBuilder(DefaultMutableTreeNode root) {
rootNode = root;
}
public void startDocument() {
currentNode = rootNode;
}
public void endDocument() {
}
public void characters(char[] data, int start, int end) {
String str = new String(data, start, end);
if (!str.equals("") && Character.isLetter(str.charAt(0)))
currentNode.add(new DefaultMutableTreeNode(str));
}
public void startElement(String uri, String qName, String lName, Attributes atts) {
previousNode = currentNode;
// currentNode = new DefaultMutableTreeNode(lName);
// Use the result of the getNodeText method to construct the tree node.
currentNode = new DefaultMutableTreeNode(getNodeText(lName, atts));
// Add attributes as child nodes //
attachAttributeList(currentNode, atts);
previousNode.add(currentNode);
}
public void endElement(String uri, String qName, String lName) {
// I think the if below can be removed:
//if (currentNode.getUserObject().equals(lName))
currentNode = (DefaultMutableTreeNode) currentNode.getParent();
}
private String getNodeText(final String lName, final Attributes atts) {
final String postfix;
if ("NE".equals(lName) && atts.getValue("NEType") != null)
postfix = " NEType=" + atts.getValue("NEType");
else if ("EQHO".equals(lName) && atts.getValue("equipmentHolderType") != null)
postfix = " equipmentHolderType=" + atts.getValue("equipmentHolderType");
else if ("UNIT".equals(lName) && atts.getValue("unitTypeActual") != null)
postfix = " equipmentHolderType=" + atts.getValue("unitTypeActual");
else if ("FUUT".equals(lName) && atts.getValue("functionalUnitType") != null)
postfix = " equipmentHolderType=" + atts.getValue("functionalUnitType");
else
postfix = "";
return lName + postfix;
}
public DefaultMutableTreeNode getTree() {
return rootNode;
}
private void attachAttributeList(DefaultMutableTreeNode node, Attributes atts) {
for (int i = 0; i < atts.getLength(); i++) {
String name = atts.getLocalName(i);
String value = atts.getValue(name);
node.add(new DefaultMutableTreeNode(name + " = " + value));
}
}
}
This is the example2.xml file I used:
<?xml version="1.0" encoding="ISO-8859-1" standalone="yes"?>
<HWData xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="hw_data.xsd">
<Header xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance" AdaptationName="NWI3BulkUpload" AccessProtocol="NWI3" time="2013-05-29T13:09:29" uploaded="true" version="1.0"/>
<NE xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance" vendorName="Nokia Siemens Networks" objectClass="NE" objectClassVersion="1" MOID="NE-RNC-4/DN:NE-WBTS-4204" NEId="PLMN-PLMN/RNC-4/WBTS-4204" NEType="WBTS" operationalState="enabled" locationName="SFX4204" nameFromPlanningSystem="" systemTitle="Nokia Flexi WCDMA Base Station">
<EQHO vendorName="Nokia Siemens Networks" objectClass="EQHO" objectClassVersion="1" MOID="NE-RNC-4/DN:NE-WBTS-4204/EQHO-173" equipmentHolderId="173" equipmentHolderType="Subrack" equipmentHolderSpecificType="471469A-173" identificationCode="471469A" version="" serialNumber="F7123009045" userLabel="FSME" state="working">
<UNIT vendorName="N" objectClass="UNIT" objectClassVersion="1" MOID="NE-RNC-4/DN:NE-WBTS-4204/EQHO-173/UNIT-16" unitId="16" unitTypeActual="CORE_FSME" identificationCode="083833A" version="105" serialNumber="F7123009045"/>
<UNIT vendorName="NOKIA SIEMENS NETWORKS" objectClass="UNIT" objectClassVersion="1" MOID="NE-RNC-4/DN:NE-WBTS-4204/EQHO-173/UNIT-225" unitId="225" unitTypeActual="FTLB" identificationCode="471984A" version="104" serialNumber="K9123412124"/>
</EQHO>
<EQHO vendorName="NSN" objectClass="EQHO" objectClassVersion="1" MOID="NE-RNC-4/DN:NE-WBTS-4204/EQHO-40192" equipmentHolderId="40192" equipmentHolderType="Subrack" equipmentHolderSpecificType="472083A-40192" identificationCode="472083A" version="203" serialNumber="K9123021259" userLabel="FXDA" state="working">
<UNIT vendorName="AR" objectClass="UNIT" objectClassVersion="1" MOID="NE-RNC-4/DN:NE-WBTS-4204/EQHO-40192/UNIT-56081" unitId="56081" unitTypeActual="TILT" identificationCode="CV3PX310R-BTQ" version="" serialNumber="00000008496310581"/>
<UNIT vendorName="AR" objectClass="UNIT" objectClassVersion="1" MOID="NE-RNC-4/DN:NE-WBTS-4204/EQHO-40192/UNIT-56083" unitId="56083" unitTypeActual="TILT" identificationCode="CV3PX310R-BTQ" version="" serialNumber="00000008496310721"/>
<UNIT vendorName="AR" objectClass="UNIT" objectClassVersion="1" MOID="NE-RNC-4/DN:NE-WBTS-4204/EQHO-40192/UNIT-56085" unitId="56085" unitTypeActual="TILT" identificationCode="CV3PX310R-BTQ" version="" serialNumber="00000008496310441"/>
</EQHO>
<EQHO vendorName="AR" objectClass="EQHO" objectClassVersion="1" MOID="NE-RNC-4/DN:NE-WBTS-4204/EQHO-56089" equipmentHolderId="56089" equipmentHolderType="Subrack" equipmentHolderSpecificType="CV3PX310R-BTQ-56089" identificationCode="CV3PX310R-BTQ" version="" serialNumber="00000008496310584" userLabel="" state="working"/>
<EQHO vendorName="AR" objectClass="EQHO" objectClassVersion="1" MOID="NE-RNC-4/DN:NE-WBTS-4204/EQHO-56090" equipmentHolderId="56090" equipmentHolderType="Subrack" equipmentHolderSpecificType="CV3PX310R-BTQ-56090" identificationCode="CV3PX310R-BTQ" version="" serialNumber="00000008496310582" userLabel="" state="working"/>
<EQHO vendorName="AR" objectClass="EQHO" objectClassVersion="1" MOID="NE-RNC-4/DN:NE-WBTS-4204/EQHO-56091" equipmentHolderId="56091" equipmentHolderType="Subrack" equipmentHolderSpecificType="CV3PX310R-BTQ-56091" identificationCode="CV3PX310R-BTQ" version="" serialNumber="00000008496310724" userLabel="" state="working"/>
<EQHO vendorName="AR" objectClass="EQHO" objectClassVersion="1" MOID="NE-RNC-4/DN:NE-WBTS-4204/EQHO-56092" equipmentHolderId="56092" equipmentHolderType="Subrack" equipmentHolderSpecificType="CV3PX310R-BTQ-56092" identificationCode="CV3PX310R-BTQ" version="" serialNumber="00000008496310722" userLabel="" state="working"/>
<EQHO vendorName="AR" objectClass="EQHO" objectClassVersion="1" MOID="NE-RNC-4/DN:NE-WBTS-4204/EQHO-56093" equipmentHolderId="56093" equipmentHolderType="Subrack" equipmentHolderSpecificType="CV3PX310R-BTQ-56093" identificationCode="CV3PX310R-BTQ" version="" serialNumber="00000008496310444" userLabel="" state="working"/>
<EQHO vendorName="AR" objectClass="EQHO" objectClassVersion="1" MOID="NE-RNC-4/DN:NE-WBTS-4204/EQHO-56094" equipmentHolderId="56094" equipmentHolderType="Subrack" equipmentHolderSpecificType="CV3PX310R-BTQ-56094" identificationCode="CV3PX310R-BTQ" version="" serialNumber="00000008496310442" userLabel="" state="working"/>
<EQHO vendorName="Nokia Siemens Networks" objectClass="EQHO" objectClassVersion="1" MOID="NE-RNC-4/DN:NE-WBTS-4204/EQHO-40448" equipmentHolderId="40448" equipmentHolderType="Subrack" equipmentHolderSpecificType="472100A-40448" identificationCode="472100A" version="101" serialNumber="K9122905970" userLabel="FRGP" state="working">
<UNIT vendorName="Nokia Siemens Networks" objectClass="UNIT" objectClassVersion="1" MOID="NE-RNC-4/DN:NE-WBTS-4204/EQHO-40448/UNIT-158" unitId="158" unitTypeActual="CORE_FRGP" identificationCode="084629A" version="101" serialNumber="K9122905970"/>
<UNIT vendorName="AR" objectClass="UNIT" objectClassVersion="1" MOID="NE-RNC-4/DN:NE-WBTS-4204/EQHO-40448/UNIT-56593" unitId="56593" unitTypeActual="TILT" identificationCode="CV3PX310R-BTQ" version="" serialNumber="00000008496310583"/>
<UNIT vendorName="AR" objectClass="UNIT" objectClassVersion="1" MOID="NE-RNC-4/DN:NE-WBTS-4204/EQHO-40448/UNIT-56595" unitId="56595" unitTypeActual="TILT" identificationCode="CV3PX310R-BTQ" version="" serialNumber="00000008496310723"/>
<UNIT vendorName="AR" objectClass="UNIT" objectClassVersion="1" MOID="NE-RNC-4/DN:NE-WBTS-4204/EQHO-40448/UNIT-56597" unitId="56597" unitTypeActual="TILT" identificationCode="CV3PX310R-BTQ" version="" serialNumber="00000008496310443"/>
</EQHO>
</NE>
</HWData>
This is the screenshot of the running program:
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