Java Tutorial/XML/DOM Edit
Версия от 17:44, 31 мая 2010; (обсуждение)
Содержание
- 1 Adding a New Entry to the End of a List
- 2 A Method for Inserting a New Entry in a List
- 3 Changing the Name of a DOM Element
- 4 Create Document with root QName
- 5 Create New Container
- 6 Creating an XML Document from a DOM Tree
- 7 Deleting an Attribute
- 8 Deleting a Tree Node
- 9 Duplicating a Portion of the Tree
- 10 Editing by Using a Document Fragment: Creating a DocumentFragment Subtree and Appending to the Document
- 11 Editing the Text of a Node
- 12 Edit Text by Insertion and Replacement
- 13 Inserting a CDATASection Node
- 14 Inserting a Processing Instruction and Comment
- 15 Locating a Node and Modifying Text
- 16 Locating a Node by an ID
- 17 Locating a Node by Using Siblings
- 18 Locating Elements by Tag Name
- 19 Methods to Insert a Processing Instruction and a Comment
- 20 Modifying Text by Cutting and Pasting
- 21 Moving and Copying Attributes
- 22 Moving Nodes between Documents: Copy a Node from One Parse Tree into Another
- 23 Normalize All of the Text in a Document
- 24 Replacing a Tree Node: Replacing an Existing Node with a New One
- 25 Setting an Attribute
- 26 Start a new XML Document
Adding a New Entry to the End of a List
/*
Code revised from
Java, XML, and JAXP by Arthur Griffith John Wiley & Sons 2002
*/
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.rument;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class DOMEdit {
static public void main(String[] arg) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
Document doc = null;
try {
DocumentBuilder builder = dbf.newDocumentBuilder();
builder.setErrorHandler(new MyErrorHandler());
InputSource is = new InputSource("personWithDTD.xml");
doc = builder.parse(is);
append(doc, "newName", "1111111111", "newEmail");
write(doc);
} catch (Exception e) {
System.err.println(e);
}
}
public static void append(Document doc, String name, String phone, String email) {
Element personNode = doc.createElement("person");
Element nameNode = doc.createElement("name");
personNode.appendChild(nameNode);
Text nametextNode = doc.createTextNode(name);
nameNode.appendChild(nametextNode);
Element phoneNode = doc.createElement("phone");
personNode.appendChild(phoneNode);
Text phonetextNode = doc.createTextNode(phone);
phoneNode.appendChild(phonetextNode);
Element emailNode = doc.createElement("email");
personNode.appendChild(emailNode);
Text emailtextNode = doc.createTextNode(email);
emailNode.appendChild(emailtextNode);
Element root = doc.getDocumentElement();
root.appendChild(personNode);
}
private static final String TAB = " ";
private static void write(Document doc) throws IOException {
outputHeading(doc);
outputElement(doc.getDocumentElement(), "");
}
private static void outputHeading(Document doc) {
System.out.print("<?xml version=\"1.0\"");
DocumentType doctype = doc.getDoctype();
if (doctype != null) {
if ((doctype.getPublicId() == null) && (doctype.getSystemId() == null)) {
System.out.println(" standalone=\"yes\"?>");
} else {
System.out.println(" standalone=\"no\"?>");
}
} else {
System.out.println("?>");
}
}
private static void outputElement(Element node, String indent) {
System.out.print(indent + "<" + node.getTagName());
NamedNodeMap nm = node.getAttributes();
for (int i = 0; i < nm.getLength(); i++) {
Attr attr = (Attr) nm.item(i);
System.out.print(" " + attr.getName() + "=\"" + attr.getValue() + "\"");
}
System.out.println(">");
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); i++)
outputloop(list.item(i), indent + TAB);
System.out.println(indent + "</" + node.getTagName() + ">");
}
private static void outputText(Text node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputCDATASection(CDATASection node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputComment(Comment node, String indent) {
System.out.println(indent + "<!-- " + node.getData() + " -->");
}
private static void outputProcessingInstructionNode(ProcessingInstruction node, String indent) {
System.out.println(indent + "<?" + node.getTarget() + " " + node.getData() + "?>");
}
private static void outputloop(Node node, String indent) {
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
outputElement((Element) node, indent);
break;
case Node.TEXT_NODE:
outputText((Text) node, indent);
break;
case Node.CDATA_SECTION_NODE:
outputCDATASection((CDATASection) node, indent);
break;
case Node.ruMENT_NODE:
outputComment((Comment) node, indent);
break;
case Node.PROCESSING_INSTRUCTION_NODE:
outputProcessingInstructionNode((ProcessingInstruction) node, indent);
break;
default:
System.out.println("Unknown node type: " + node.getNodeType());
break;
}
}
}
class MyErrorHandler implements ErrorHandler {
public void warning(SAXParseException e) throws SAXException {
show("Warning", e);
throw (e);
}
public void error(SAXParseException e) throws SAXException {
show("Error", e);
throw (e);
}
public void fatalError(SAXParseException e) throws SAXException {
show("Fatal Error", e);
throw (e);
}
private void show(String type, SAXParseException e) {
System.out.println(type + ": " + e.getMessage());
System.out.println("Line " + e.getLineNumber() + " Column " + e.getColumnNumber());
System.out.println("System ID: " + e.getSystemId());
}
}
//File: personWithDTD.xml
<?xml version="1.0" standalone="yes"?>
<!-- This document is both well formed and valid -->
<!DOCTYPE folks [
<!ELEMENT folks (person)*>
<!ELEMENT person (name, phone, email)>
<!ELEMENT name (#PCDATA)>
<!ELEMENT phone (#PCDATA)>
<!ELEMENT email (#PCDATA)>
]>
<folks>
<person>
<name>B D</name>
<phone>999 555-8888</phone>
<email>b@xyz.net</email>
</person>
</folks>
<?xml version="1.0" standalone="yes"?>
<folks>
<person>
<name>
B D
</name>
<phone>
999 555-8888
</phone>
<email>
b@xyz.net
</email>
</person>
<person>
<name>
newName
</name>
<phone>
1111111111
</phone>
<email>
newEmail
</email>
</person>
</folks>
A Method for Inserting a New Entry in a List
/*
Code revised from
Java, XML, and JAXP by Arthur Griffith John Wiley & Sons 2002
*/
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.rument;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class DOMEdit {
static public void main(String[] arg) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
Document doc = null;
try {
DocumentBuilder builder = dbf.newDocumentBuilder();
builder.setErrorHandler(new MyErrorHandler());
InputSource is = new InputSource("personWithDTD.xml");
doc = builder.parse(is);
insert(doc, "newName", "1111111111", "newEmail");
write(doc);
} catch (Exception e) {
System.err.println(e);
}
}
public static void insert(Document doc, String name, String phone, String email) {
Element personNode = doc.createElement("person");
Element nameNode = doc.createElement("name");
personNode.appendChild(nameNode);
Text nametextNode = doc.createTextNode(name);
nameNode.appendChild(nametextNode);
Element phoneNode = doc.createElement("phone");
personNode.appendChild(phoneNode);
Text phonetextNode = doc.createTextNode(phone);
phoneNode.appendChild(phonetextNode);
Element emailNode = doc.createElement("email");
personNode.appendChild(emailNode);
Text emailtextNode = doc.createTextNode(email);
emailNode.appendChild(emailtextNode);
Element root = doc.getDocumentElement();
Node firstChildNode = root.getFirstChild();
root.insertBefore(personNode, firstChildNode);
}
private static final String TAB = " ";
private static void write(Document doc) throws IOException {
outputHeading(doc);
outputElement(doc.getDocumentElement(), "");
}
private static void outputHeading(Document doc) {
System.out.print("<?xml version=\"1.0\"");
DocumentType doctype = doc.getDoctype();
if (doctype != null) {
if ((doctype.getPublicId() == null) && (doctype.getSystemId() == null)) {
System.out.println(" standalone=\"yes\"?>");
} else {
System.out.println(" standalone=\"no\"?>");
}
} else {
System.out.println("?>");
}
}
private static void outputElement(Element node, String indent) {
System.out.print(indent + "<" + node.getTagName());
NamedNodeMap nm = node.getAttributes();
for (int i = 0; i < nm.getLength(); i++) {
Attr attr = (Attr) nm.item(i);
System.out.print(" " + attr.getName() + "=\"" + attr.getValue() + "\"");
}
System.out.println(">");
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); i++)
outputloop(list.item(i), indent + TAB);
System.out.println(indent + "</" + node.getTagName() + ">");
}
private static void outputText(Text node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputCDATASection(CDATASection node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputComment(Comment node, String indent) {
System.out.println(indent + "<!-- " + node.getData() + " -->");
}
private static void outputProcessingInstructionNode(ProcessingInstruction node, String indent) {
System.out.println(indent + "<?" + node.getTarget() + " " + node.getData() + "?>");
}
private static void outputloop(Node node, String indent) {
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
outputElement((Element) node, indent);
break;
case Node.TEXT_NODE:
outputText((Text) node, indent);
break;
case Node.CDATA_SECTION_NODE:
outputCDATASection((CDATASection) node, indent);
break;
case Node.ruMENT_NODE:
outputComment((Comment) node, indent);
break;
case Node.PROCESSING_INSTRUCTION_NODE:
outputProcessingInstructionNode((ProcessingInstruction) node, indent);
break;
default:
System.out.println("Unknown node type: " + node.getNodeType());
break;
}
}
}
class MyErrorHandler implements ErrorHandler {
public void warning(SAXParseException e) throws SAXException {
show("Warning", e);
throw (e);
}
public void error(SAXParseException e) throws SAXException {
show("Error", e);
throw (e);
}
public void fatalError(SAXParseException e) throws SAXException {
show("Fatal Error", e);
throw (e);
}
private void show(String type, SAXParseException e) {
System.out.println(type + ": " + e.getMessage());
System.out.println("Line " + e.getLineNumber() + " Column " + e.getColumnNumber());
System.out.println("System ID: " + e.getSystemId());
}
}
<?xml version="1.0" standalone="yes"?>
<folks>
<person>
<name>
newName
</name>
<phone>
1111111111
</phone>
<email>
newEmail
</email>
</person>
<person>
<name>
B D
</name>
<phone>
999 555-8888
</phone>
<email>
b@xyz.net
</email>
</person>
</folks>
Changing the Name of a DOM Element
import java.io.File;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
public class Main {
public static void main(String[] argv) throws Exception {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setValidating(true);
factory.setExpandEntityReferences(false);
Document doc = factory.newDocumentBuilder().parse(new File("filename"));
Element element = doc.getDocumentElement();
Element element2 = doc.createElement("newname");
NamedNodeMap attrs = element.getAttributes();
for (int i = 0; i < attrs.getLength(); i++) {
Attr attr2 = (Attr) doc.importNode(attrs.item(i), true);
element2.getAttributes().setNamedItem(attr2);
}
while (element.hasChildNodes()) {
element2.appendChild(element.getFirstChild());
}
element.getParentNode().replaceChild(element2, element);
}
}
Create Document with root QName
/*
* 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
* http://www.netbeans.org/cddl-gplv2.html
* or nbbuild/licenses/CDDL-GPL-2-CP. 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
* nbbuild/licenses/CDDL-GPL-2-CP. 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):
*
* The Original Software is NetBeans. The Initial Developer of the Original
* Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
* Microsystems, Inc. All Rights Reserved.
*
* 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 do not 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.
*/
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.DOMException;
import org.w3c.dom.Document;
/**
* Utility class collecting library methods related to XML processing. Stolen
* from nbbuild/antsrc and openide/.../xml.
*
* @author Petr Kuzel, Jesse Glick
*/
public final class XMLUtil {
public static Document createDocument(String rootQName) throws DOMException {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
try {
return factory.newDocumentBuilder ().getDOMImplementation ().createDocument (null, rootQName, null);
} catch (ParserConfigurationException ex) {
throw (DOMException)new DOMException(DOMException.NOT_SUPPORTED_ERR, "Cannot create parser").initCause(ex); // NOI18N
}
}
}
Create New Container
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
/*******************************************************************************
* Copyright (C) 2007 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
******************************************************************************/
/**
* Various XML utilities.
*
* @author simonjsmith, ksim
* @version 1.1 - ksim - March 6th, 2007 - Added functions regarding streaming
* @version 1.2 - ksim - March 10th, 2007 - Added functions regarding DOM
* manipulation
*/
public class Utils {
public static Element createNewContainer(Document document, Element parent,
String childElement) {
Element child = (Element) document.createElement(childElement);
parent.appendChild(child);
return child;
}
}
Creating an XML Document from a DOM Tree
/*
Code revised from
Java, XML, and JAXP by Arthur Griffith John Wiley & Sons 2002
*/
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.rument;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class DOMCopy {
static public void main(String[] arg) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
Document doc = null;
try {
DocumentBuilder builder = dbf.newDocumentBuilder();
builder.setErrorHandler(new MyErrorHandler());
InputSource is = new InputSource("personWithDTD.xml");
doc = builder.parse(is);
write(doc);
} catch (Exception e) {
System.err.println(e);
}
}
private static final String TAB = " ";
private static void write(Document doc) throws IOException {
outputHeading(doc);
outputElement(doc.getDocumentElement(), "");
}
private static void outputHeading(Document doc) {
System.out.print("<?xml version=\"1.0\"");
DocumentType doctype = doc.getDoctype();
if (doctype != null) {
if ((doctype.getPublicId() == null) && (doctype.getSystemId() == null)) {
System.out.println(" standalone=\"yes\"?>");
} else {
System.out.println(" standalone=\"no\"?>");
}
} else {
System.out.println("?>");
}
}
private static void outputElement(Element node, String indent) {
System.out.print(indent + "<" + node.getTagName());
NamedNodeMap nm = node.getAttributes();
for (int i = 0; i < nm.getLength(); i++) {
Attr attr = (Attr) nm.item(i);
System.out.print(" " + attr.getName() + "=\"" + attr.getValue() + "\"");
}
System.out.println(">");
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); i++)
outputloop(list.item(i), indent + TAB);
System.out.println(indent + "</" + node.getTagName() + ">");
}
private static void outputText(Text node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputCDATASection(CDATASection node, String indent) {
System.out.println(indent + node.getData() );
}
private static void outputComment(Comment node, String indent) {
System.out.println(indent + "<!-- " + node.getData() + " -->");
}
private static void outputProcessingInstructionNode(ProcessingInstruction node, String indent) {
System.out.println(indent + "<?" + node.getTarget() + " " + node.getData() + "?>");
}
private static void outputloop(Node node, String indent) {
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
outputElement((Element) node, indent);
break;
case Node.TEXT_NODE:
outputText((Text) node, indent);
break;
case Node.CDATA_SECTION_NODE:
outputCDATASection((CDATASection) node, indent);
break;
case Node.ruMENT_NODE:
outputComment((Comment) node, indent);
break;
case Node.PROCESSING_INSTRUCTION_NODE:
outputProcessingInstructionNode((ProcessingInstruction) node, indent);
break;
default:
System.out.println("Unknown node type: " + node.getNodeType());
break;
}
}
}
class MyErrorHandler implements ErrorHandler {
public void warning(SAXParseException e) throws SAXException {
show("Warning", e);
throw (e);
}
public void error(SAXParseException e) throws SAXException {
show("Error", e);
throw (e);
}
public void fatalError(SAXParseException e) throws SAXException {
show("Fatal Error", e);
throw (e);
}
private void show(String type, SAXParseException e) {
System.out.println(type + ": " + e.getMessage());
System.out.println("Line " + e.getLineNumber() + " Column " + e.getColumnNumber());
System.out.println("System ID: " + e.getSystemId());
}
}
//File: personWithDTD.xml
<?xml version="1.0" standalone="yes"?>
<!-- This document is both well formed and valid -->
<!DOCTYPE folks [
<!ELEMENT folks (person)*>
<!ELEMENT person (name, phone, email)>
<!ELEMENT name (#PCDATA)>
<!ELEMENT phone (#PCDATA)>
<!ELEMENT email (#PCDATA)>
]>
<folks>
<person>
<name>B D</name>
<phone>999 555-8888</phone>
<email>b@xyz.net</email>
</person>
</folks>
<?xml version="1.0" standalone="yes"?>
<folks>
<person>
<name>
B D
</name>
<phone>
999 555-8888
</phone>
<email>
b@xyz.net
</email>
</person>
</folks>
Deleting an Attribute
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.rument;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class DOMEdit {
static public void main(String[] arg) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
Document doc = null;
try {
DocumentBuilder builder = dbf.newDocumentBuilder();
builder.setErrorHandler(new MyErrorHandler());
InputSource is = new InputSource("personWithDTD.xml");
doc = builder.parse(is);
delAttribute(doc);
write(doc);
} catch (Exception e) {
System.err.println(e);
}
}
public static void delAttribute(Document doc) {
Element root = doc.getDocumentElement();
Element person = (Element)root.getFirstChild();
person.removeAttribute("number");
person.removeAttribute("dept");
}
private static final String TAB = " ";
private static void write(Document doc) throws IOException {
outputHeading(doc);
outputElement(doc.getDocumentElement(), "");
}
private static void outputHeading(Document doc) {
System.out.print("<?xml version=\"1.0\"");
DocumentType doctype = doc.getDoctype();
if (doctype != null) {
if ((doctype.getPublicId() == null) && (doctype.getSystemId() == null)) {
System.out.println(" standalone=\"yes\"?>");
} else {
System.out.println(" standalone=\"no\"?>");
}
} else {
System.out.println("?>");
}
}
private static void outputElement(Element node, String indent) {
System.out.print(indent + "<" + node.getTagName());
NamedNodeMap nm = node.getAttributes();
for (int i = 0; i < nm.getLength(); i++) {
Attr attr = (Attr) nm.item(i);
System.out.print(" " + attr.getName() + "=\"" + attr.getValue() + "\"");
}
System.out.println(">");
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); i++)
outputloop(list.item(i), indent + TAB);
System.out.println(indent + "</" + node.getTagName() + ">");
}
private static void outputText(Text node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputCDATASection(CDATASection node, String indent) {
System.out.println(indent + node.getData() );
}
private static void outputComment(Comment node, String indent) {
System.out.println(indent + "<!-- " + node.getData() + " -->");
}
private static void outputProcessingInstructionNode(ProcessingInstruction node, String indent) {
System.out.println(indent + "<?" + node.getTarget() + " " + node.getData() + "?>");
}
private static void outputloop(Node node, String indent) {
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
outputElement((Element) node, indent);
break;
case Node.TEXT_NODE:
outputText((Text) node, indent);
break;
case Node.CDATA_SECTION_NODE:
outputCDATASection((CDATASection) node, indent);
break;
case Node.ruMENT_NODE:
outputComment((Comment) node, indent);
break;
case Node.PROCESSING_INSTRUCTION_NODE:
outputProcessingInstructionNode((ProcessingInstruction) node, indent);
break;
default:
System.out.println("Unknown node type: " + node.getNodeType());
break;
}
}
}
class MyErrorHandler implements ErrorHandler {
public void warning(SAXParseException e) throws SAXException {
show("Warning", e);
throw (e);
}
public void error(SAXParseException e) throws SAXException {
show("Error", e);
throw (e);
}
public void fatalError(SAXParseException e) throws SAXException {
show("Fatal Error", e);
throw (e);
}
private void show(String type, SAXParseException e) {
System.out.println(type + ": " + e.getMessage());
System.out.println("Line " + e.getLineNumber() + " Column " + e.getColumnNumber());
System.out.println("System ID: " + e.getSystemId());
}
}
//File: personWithDTD.xml
<?xml version="1.0" standalone="yes"?>
<!-- This document is both well formed and valid -->
<!DOCTYPE folks [
<!ELEMENT folks (person)*>
<!ELEMENT person (name, phone, email)>
<!ELEMENT name (#PCDATA)>
<!ELEMENT phone (#PCDATA)>
<!ELEMENT email (#PCDATA)>
<!ATTLIST person number CDATA #IMPLIED
dept CDATA "staff">
]>
<folks>
<person number="3412" dept="medical">
<name>B D</name>
<phone>999 555-8888</phone>
<email>b@xyz.net</email>
</person>
</folks>
<?xml version="1.0" standalone="yes"?>
<folks>
<person dept="staff">
<name>
B D
</name>
<phone>
999 555-8888
</phone>
<email>
b@xyz.net
</email>
</person>
</folks>
Deleting a Tree Node
/*
Code revised from
Java, XML, and JAXP by Arthur Griffith John Wiley & Sons 2002
*/
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.rument;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class DOMEdit {
static public void main(String[] arg) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
Document doc = null;
try {
DocumentBuilder builder = dbf.newDocumentBuilder();
builder.setErrorHandler(new MyErrorHandler());
InputSource is = new InputSource("personWithDTD.xml");
doc = builder.parse(is);
deleteFirstElement(doc);
write(doc);
} catch (Exception e) {
System.err.println(e);
}
}
public static void deleteFirstElement(Document doc) {
Element root = doc.getDocumentElement();
Element child = (Element)root.getFirstChild();
root.removeChild(child);
}
private static final String TAB = " ";
private static void write(Document doc) throws IOException {
outputHeading(doc);
outputElement(doc.getDocumentElement(), "");
}
private static void outputHeading(Document doc) {
System.out.print("<?xml version=\"1.0\"");
DocumentType doctype = doc.getDoctype();
if (doctype != null) {
if ((doctype.getPublicId() == null) && (doctype.getSystemId() == null)) {
System.out.println(" standalone=\"yes\"?>");
} else {
System.out.println(" standalone=\"no\"?>");
}
} else {
System.out.println("?>");
}
}
private static void outputElement(Element node, String indent) {
System.out.print(indent + "<" + node.getTagName());
NamedNodeMap nm = node.getAttributes();
for (int i = 0; i < nm.getLength(); i++) {
Attr attr = (Attr) nm.item(i);
System.out.print(" " + attr.getName() + "=\"" + attr.getValue() + "\"");
}
System.out.println(">");
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); i++)
outputloop(list.item(i), indent + TAB);
System.out.println(indent + "</" + node.getTagName() + ">");
}
private static void outputText(Text node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputCDATASection(CDATASection node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputComment(Comment node, String indent) {
System.out.println(indent + "<!-- " + node.getData() + " -->");
}
private static void outputProcessingInstructionNode(ProcessingInstruction node, String indent) {
System.out.println(indent + "<?" + node.getTarget() + " " + node.getData() + "?>");
}
private static void outputloop(Node node, String indent) {
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
outputElement((Element) node, indent);
break;
case Node.TEXT_NODE:
outputText((Text) node, indent);
break;
case Node.CDATA_SECTION_NODE:
outputCDATASection((CDATASection) node, indent);
break;
case Node.ruMENT_NODE:
outputComment((Comment) node, indent);
break;
case Node.PROCESSING_INSTRUCTION_NODE:
outputProcessingInstructionNode((ProcessingInstruction) node, indent);
break;
default:
System.out.println("Unknown node type: " + node.getNodeType());
break;
}
}
}
class MyErrorHandler implements ErrorHandler {
public void warning(SAXParseException e) throws SAXException {
show("Warning", e);
throw (e);
}
public void error(SAXParseException e) throws SAXException {
show("Error", e);
throw (e);
}
public void fatalError(SAXParseException e) throws SAXException {
show("Fatal Error", e);
throw (e);
}
private void show(String type, SAXParseException e) {
System.out.println(type + ": " + e.getMessage());
System.out.println("Line " + e.getLineNumber() + " Column " + e.getColumnNumber());
System.out.println("System ID: " + e.getSystemId());
}
}
//File: personWithDTD.xml
<?xml version="1.0" standalone="yes"?>
<!-- This document is both well formed and valid -->
<!DOCTYPE folks [
<!ELEMENT folks (person)*>
<!ELEMENT person (name, phone, email)>
<!ELEMENT name (#PCDATA)>
<!ELEMENT phone (#PCDATA)>
<!ELEMENT email (#PCDATA)>
]>
<folks>
<person>
<name>B D</name>
<phone>999 555-8888</phone>
<email>b@xyz.net</email>
</person>
</folks>
Duplicating a Portion of the Tree
/*
Code revised from
Java, XML, and JAXP by Arthur Griffith John Wiley & Sons 2002
*/
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.rument;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class DOMEdit {
static public void main(String[] arg) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
Document doc = null;
try {
DocumentBuilder builder = dbf.newDocumentBuilder();
builder.setErrorHandler(new MyErrorHandler());
InputSource is = new InputSource("personWithDTD.xml");
doc = builder.parse(is);
duplicatePerson(doc);
write(doc);
} catch (Exception e) {
System.err.println(e);
}
}
public static void duplicatePerson(Document doc) {
Element root = doc.getDocumentElement();
Element origPerson = (Element)root.getFirstChild();
Element newPerson = (Element)origPerson.cloneNode(true);
root.appendChild(newPerson);
}
private static final String TAB = " ";
private static void write(Document doc) throws IOException {
outputHeading(doc);
outputElement(doc.getDocumentElement(), "");
}
private static void outputHeading(Document doc) {
System.out.print("<?xml version=\"1.0\"");
DocumentType doctype = doc.getDoctype();
if (doctype != null) {
if ((doctype.getPublicId() == null) && (doctype.getSystemId() == null)) {
System.out.println(" standalone=\"yes\"?>");
} else {
System.out.println(" standalone=\"no\"?>");
}
} else {
System.out.println("?>");
}
}
private static void outputElement(Element node, String indent) {
System.out.print(indent + "<" + node.getTagName());
NamedNodeMap nm = node.getAttributes();
for (int i = 0; i < nm.getLength(); i++) {
Attr attr = (Attr) nm.item(i);
System.out.print(" " + attr.getName() + "=\"" + attr.getValue() + "\"");
}
System.out.println(">");
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); i++)
outputloop(list.item(i), indent + TAB);
System.out.println(indent + "</" + node.getTagName() + ">");
}
private static void outputText(Text node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputCDATASection(CDATASection node, String indent) {
System.out.println(indent + node.getData() );
}
private static void outputComment(Comment node, String indent) {
System.out.println(indent + "<!-- " + node.getData() + " -->");
}
private static void outputProcessingInstructionNode(ProcessingInstruction node, String indent) {
System.out.println(indent + "<?" + node.getTarget() + " " + node.getData() + "?>");
}
private static void outputloop(Node node, String indent) {
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
outputElement((Element) node, indent);
break;
case Node.TEXT_NODE:
outputText((Text) node, indent);
break;
case Node.CDATA_SECTION_NODE:
outputCDATASection((CDATASection) node, indent);
break;
case Node.ruMENT_NODE:
outputComment((Comment) node, indent);
break;
case Node.PROCESSING_INSTRUCTION_NODE:
outputProcessingInstructionNode((ProcessingInstruction) node, indent);
break;
default:
System.out.println("Unknown node type: " + node.getNodeType());
break;
}
}
}
class MyErrorHandler implements ErrorHandler {
public void warning(SAXParseException e) throws SAXException {
show("Warning", e);
throw (e);
}
public void error(SAXParseException e) throws SAXException {
show("Error", e);
throw (e);
}
public void fatalError(SAXParseException e) throws SAXException {
show("Fatal Error", e);
throw (e);
}
private void show(String type, SAXParseException e) {
System.out.println(type + ": " + e.getMessage());
System.out.println("Line " + e.getLineNumber() + " Column " + e.getColumnNumber());
System.out.println("System ID: " + e.getSystemId());
}
}
//File: personWithDTD.xml
<?xml version="1.0" standalone="yes"?>
<!-- This document is both well formed and valid -->
<!DOCTYPE folks [
<!ELEMENT folks (person)*>
<!ELEMENT person (name, phone, email)>
<!ELEMENT name (#PCDATA)>
<!ELEMENT phone (#PCDATA)>
<!ELEMENT email (#PCDATA)>
]>
<folks>
<person>
<name>B D</name>
<phone>999 555-8888</phone>
<email>b@xyz.net</email>
</person>
</folks>
<?xml version="1.0" standalone="yes"?>
<folks>
<person>
<name>
B D
</name>
<phone>
999 555-8888
</phone>
<email>
b@xyz.net
</email>
</person>
<person>
<name>
B D
</name>
<phone>
999 555-8888
</phone>
<email>
b@xyz.net
</email>
</person>
</folks>
Editing by Using a Document Fragment: Creating a DocumentFragment Subtree and Appending to the Document
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.rument;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentFragment;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class DOMEdit {
static public void main(String[] arg) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
Document doc = null;
try {
DocumentBuilder builder = dbf.newDocumentBuilder();
builder.setErrorHandler(new MyErrorHandler());
InputSource is = new InputSource("personWithDTD.xml");
doc = builder.parse(is);
addFragment(doc);
write(doc);
} catch (Exception e) {
System.err.println(e);
}
}
public static void addFragment(Document doc) {
Element person;
Element root = doc.getDocumentElement();
DocumentFragment fragment = doc.createDocumentFragment();
person = makePersonNode(doc,"Name 1","555-4444");
fragment.appendChild(person);
person = makePersonNode(doc,"Name 2","555-9999");
fragment.appendChild(person);
root.appendChild(fragment);
}
private static Element makePersonNode(Document doc,String name,String phone) {
Element nameNode = doc.createElement("name");
Text nametextNode = doc.createTextNode(name);
nameNode.appendChild(nametextNode);
Element phoneNode = doc.createElement("phone");
Text phonetextNode = doc.createTextNode(phone);
phoneNode.appendChild(phonetextNode);
Element personNode = doc.createElement("person");
personNode.appendChild(nameNode);
personNode.appendChild(phoneNode);
return(personNode);
}
private static final String TAB = " ";
private static void write(Document doc) throws IOException {
outputHeading(doc);
outputElement(doc.getDocumentElement(), "");
}
private static void outputHeading(Document doc) {
System.out.print("<?xml version=\"1.0\"");
DocumentType doctype = doc.getDoctype();
if (doctype != null) {
if ((doctype.getPublicId() == null) && (doctype.getSystemId() == null)) {
System.out.println(" standalone=\"yes\"?>");
} else {
System.out.println(" standalone=\"no\"?>");
}
} else {
System.out.println("?>");
}
}
private static void outputElement(Element node, String indent) {
System.out.print(indent + "<" + node.getTagName());
NamedNodeMap nm = node.getAttributes();
for (int i = 0; i < nm.getLength(); i++) {
Attr attr = (Attr) nm.item(i);
System.out.print(" " + attr.getName() + "=\"" + attr.getValue() + "\"");
}
System.out.println(">");
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); i++)
outputloop(list.item(i), indent + TAB);
System.out.println(indent + "</" + node.getTagName() + ">");
}
private static void outputText(Text node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputCDATASection(CDATASection node, String indent) {
System.out.println(indent + node.getData() );
}
private static void outputComment(Comment node, String indent) {
System.out.println(indent + "<!-- " + node.getData() + " -->");
}
private static void outputProcessingInstructionNode(ProcessingInstruction node, String indent) {
System.out.println(indent + "<?" + node.getTarget() + " " + node.getData() + "?>");
}
private static void outputloop(Node node, String indent) {
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
outputElement((Element) node, indent);
break;
case Node.TEXT_NODE:
outputText((Text) node, indent);
break;
case Node.CDATA_SECTION_NODE:
outputCDATASection((CDATASection) node, indent);
break;
case Node.ruMENT_NODE:
outputComment((Comment) node, indent);
break;
case Node.PROCESSING_INSTRUCTION_NODE:
outputProcessingInstructionNode((ProcessingInstruction) node, indent);
break;
default:
System.out.println("Unknown node type: " + node.getNodeType());
break;
}
}
}
class MyErrorHandler implements ErrorHandler {
public void warning(SAXParseException e) throws SAXException {
show("Warning", e);
throw (e);
}
public void error(SAXParseException e) throws SAXException {
show("Error", e);
throw (e);
}
public void fatalError(SAXParseException e) throws SAXException {
show("Fatal Error", e);
throw (e);
}
private void show(String type, SAXParseException e) {
System.out.println(type + ": " + e.getMessage());
System.out.println("Line " + e.getLineNumber() + " Column " + e.getColumnNumber());
System.out.println("System ID: " + e.getSystemId());
}
}
//File: persionWithDTD.xml
<?xml version="1.0" standalone="yes"?>
<!DOCTYPE locations [
<!ELEMENT locations (place)*>
<!ELEMENT place (name | directions)*>
<!ELEMENT name (#PCDATA)>
<!ELEMENT directions (#PCDATA)>
]>
<locations>
<place>
<name>oldName</name>
<directions>oldDirection</directions>
</place>
</locations>
<?xml version="1.0" standalone="yes"?>
<locations>
<place>
<name>
oldName
</name>
<directions>
oldDirection
</directions>
</place>
<person>
<name>
Fred
</name>
<phone>
555-4927
</phone>
</person>
<person>
<name>
Sam
</name>
<phone>
555-9832
</phone>
</person>
</locations>
Editing the Text of a Node
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.rument;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class DOMEdit {
static public void main(String[] arg) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
Document doc = null;
try {
DocumentBuilder builder = dbf.newDocumentBuilder();
builder.setErrorHandler(new MyErrorHandler());
InputSource is = new InputSource("personWithDTD.xml");
doc = builder.parse(is);
modifyTextByReplacement(doc);
write(doc);
} catch (Exception e) {
System.err.println(e);
}
}
public static void modifyTextByReplacement(Document doc) {
Element root = doc.getDocumentElement();
Element place = (Element)root.getFirstChild();
Text name = (Text)place.getFirstChild().getFirstChild();
Text directions = (Text)place.getLastChild().getFirstChild();
name.setData("newName");
directions.setData("newDirection");
}
private static final String TAB = " ";
private static void write(Document doc) throws IOException {
outputHeading(doc);
outputElement(doc.getDocumentElement(), "");
}
private static void outputHeading(Document doc) {
System.out.print("<?xml version=\"1.0\"");
DocumentType doctype = doc.getDoctype();
if (doctype != null) {
if ((doctype.getPublicId() == null) && (doctype.getSystemId() == null)) {
System.out.println(" standalone=\"yes\"?>");
} else {
System.out.println(" standalone=\"no\"?>");
}
} else {
System.out.println("?>");
}
}
private static void outputElement(Element node, String indent) {
System.out.print(indent + "<" + node.getTagName());
NamedNodeMap nm = node.getAttributes();
for (int i = 0; i < nm.getLength(); i++) {
Attr attr = (Attr) nm.item(i);
System.out.print(" " + attr.getName() + "=\"" + attr.getValue() + "\"");
}
System.out.println(">");
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); i++)
outputloop(list.item(i), indent + TAB);
System.out.println(indent + "</" + node.getTagName() + ">");
}
private static void outputText(Text node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputCDATASection(CDATASection node, String indent) {
System.out.println(indent + node.getData() );
}
private static void outputComment(Comment node, String indent) {
System.out.println(indent + "<!-- " + node.getData() + " -->");
}
private static void outputProcessingInstructionNode(ProcessingInstruction node, String indent) {
System.out.println(indent + "<?" + node.getTarget() + " " + node.getData() + "?>");
}
private static void outputloop(Node node, String indent) {
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
outputElement((Element) node, indent);
break;
case Node.TEXT_NODE:
outputText((Text) node, indent);
break;
case Node.CDATA_SECTION_NODE:
outputCDATASection((CDATASection) node, indent);
break;
case Node.ruMENT_NODE:
outputComment((Comment) node, indent);
break;
case Node.PROCESSING_INSTRUCTION_NODE:
outputProcessingInstructionNode((ProcessingInstruction) node, indent);
break;
default:
System.out.println("Unknown node type: " + node.getNodeType());
break;
}
}
}
class MyErrorHandler implements ErrorHandler {
public void warning(SAXParseException e) throws SAXException {
show("Warning", e);
throw (e);
}
public void error(SAXParseException e) throws SAXException {
show("Error", e);
throw (e);
}
public void fatalError(SAXParseException e) throws SAXException {
show("Fatal Error", e);
throw (e);
}
private void show(String type, SAXParseException e) {
System.out.println(type + ": " + e.getMessage());
System.out.println("Line " + e.getLineNumber() + " Column " + e.getColumnNumber());
System.out.println("System ID: " + e.getSystemId());
}
}
<?xml version="1.0" standalone="yes"?>
<locations>
<place>
<name>
newName
</name>
<directions>
newDirection
</directions>
</place>
</locations>
Edit Text by Insertion and Replacement
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.rument;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class DOMEdit {
static public void main(String[] arg) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
Document doc = null;
try {
DocumentBuilder builder = dbf.newDocumentBuilder();
builder.setErrorHandler(new MyErrorHandler());
InputSource is = new InputSource("personWithDTD.xml");
doc = builder.parse(is);
editTextbyInsertionandReplacement(doc);
write(doc);
} catch (Exception e) {
System.err.println(e);
}
}
public static void editTextbyInsertionandReplacement(Document doc) {
Element root = doc.getDocumentElement();
Element place = (Element)root.getFirstChild();
Text name = (Text)place.getFirstChild().getFirstChild();
Text directions = (Text)place.getLastChild().getFirstChild();
// Inserting the word "black"
// name.insertData(offset," black");
name.insertData(3," black");
// Replace "left" with "right"
//directions.replaceData(offset,count,"right");
directions.replaceData(3,3,"right");
}
private static final String TAB = " ";
private static void write(Document doc) throws IOException {
outputHeading(doc);
outputElement(doc.getDocumentElement(), "");
}
private static void outputHeading(Document doc) {
System.out.print("<?xml version=\"1.0\"");
DocumentType doctype = doc.getDoctype();
if (doctype != null) {
if ((doctype.getPublicId() == null) && (doctype.getSystemId() == null)) {
System.out.println(" standalone=\"yes\"?>");
} else {
System.out.println(" standalone=\"no\"?>");
}
} else {
System.out.println("?>");
}
}
private static void outputElement(Element node, String indent) {
System.out.print(indent + "<" + node.getTagName());
NamedNodeMap nm = node.getAttributes();
for (int i = 0; i < nm.getLength(); i++) {
Attr attr = (Attr) nm.item(i);
System.out.print(" " + attr.getName() + "=\"" + attr.getValue() + "\"");
}
System.out.println(">");
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); i++)
outputloop(list.item(i), indent + TAB);
System.out.println(indent + "</" + node.getTagName() + ">");
}
private static void outputText(Text node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputCDATASection(CDATASection node, String indent) {
System.out.println(indent + node.getData() );
}
private static void outputComment(Comment node, String indent) {
System.out.println(indent + "<!-- " + node.getData() + " -->");
}
private static void outputProcessingInstructionNode(ProcessingInstruction node, String indent) {
System.out.println(indent + "<?" + node.getTarget() + " " + node.getData() + "?>");
}
private static void outputloop(Node node, String indent) {
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
outputElement((Element) node, indent);
break;
case Node.TEXT_NODE:
outputText((Text) node, indent);
break;
case Node.CDATA_SECTION_NODE:
outputCDATASection((CDATASection) node, indent);
break;
case Node.ruMENT_NODE:
outputComment((Comment) node, indent);
break;
case Node.PROCESSING_INSTRUCTION_NODE:
outputProcessingInstructionNode((ProcessingInstruction) node, indent);
break;
default:
System.out.println("Unknown node type: " + node.getNodeType());
break;
}
}
}
class MyErrorHandler implements ErrorHandler {
public void warning(SAXParseException e) throws SAXException {
show("Warning", e);
throw (e);
}
public void error(SAXParseException e) throws SAXException {
show("Error", e);
throw (e);
}
public void fatalError(SAXParseException e) throws SAXException {
show("Fatal Error", e);
throw (e);
}
private void show(String type, SAXParseException e) {
System.out.println(type + ": " + e.getMessage());
System.out.println("Line " + e.getLineNumber() + " Column " + e.getColumnNumber());
System.out.println("System ID: " + e.getSystemId());
}
}
//File: personWithDTD.xml
<?xml version="1.0" standalone="yes"?>
<!DOCTYPE locations [
<!ELEMENT locations (place)*>
<!ELEMENT place (name | directions)*>
<!ELEMENT name (#PCDATA)>
<!ELEMENT directions (#PCDATA)>
]>
<locations>
<place>
<name>name</name>
<directions>direction</directions>
</place>
</locations>
<?xml version="1.0" standalone="yes"?>
<locations>
<place>
<name>
old blackName
</name>
<directions>
oldrightection
</directions>
</place>
</locations>
Inserting a CDATASection Node
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.rument;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class DOMEdit {
static public void main(String[] arg) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
Document doc = null;
try {
DocumentBuilder builder = dbf.newDocumentBuilder();
builder.setErrorHandler(new MyErrorHandler());
InputSource is = new InputSource("personWithDTD.xml");
doc = builder.parse(is);
addCDATA(doc);
write(doc);
} catch (Exception e) {
System.err.println(e);
}
}
public static void addCDATA(Document doc) {
Element root = doc.getDocumentElement();
Element place = (Element)root.getFirstChild();
Element directions = (Element)place.getLastChild();
String dirtext = "cdData.";
CDATASection dirdata = doc.createCDATASection(dirtext);
directions.replaceChild(dirdata,directions.getFirstChild());
}
private static final String TAB = " ";
private static void write(Document doc) throws IOException {
outputHeading(doc);
outputElement(doc.getDocumentElement(), "");
}
private static void outputHeading(Document doc) {
System.out.print("<?xml version=\"1.0\"");
DocumentType doctype = doc.getDoctype();
if (doctype != null) {
if ((doctype.getPublicId() == null) && (doctype.getSystemId() == null)) {
System.out.println(" standalone=\"yes\"?>");
} else {
System.out.println(" standalone=\"no\"?>");
}
} else {
System.out.println("?>");
}
}
private static void outputElement(Element node, String indent) {
System.out.print(indent + "<" + node.getTagName());
NamedNodeMap nm = node.getAttributes();
for (int i = 0; i < nm.getLength(); i++) {
Attr attr = (Attr) nm.item(i);
System.out.print(" " + attr.getName() + "=\"" + attr.getValue() + "\"");
}
System.out.println(">");
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); i++)
outputloop(list.item(i), indent + TAB);
System.out.println(indent + "</" + node.getTagName() + ">");
}
private static void outputText(Text node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputCDATASection(CDATASection node, String indent) {
System.out.println(indent + node.getData() );
}
private static void outputComment(Comment node, String indent) {
System.out.println(indent + "<!-- " + node.getData() + " -->");
}
private static void outputProcessingInstructionNode(ProcessingInstruction node, String indent) {
System.out.println(indent + "<?" + node.getTarget() + " " + node.getData() + "?>");
}
private static void outputloop(Node node, String indent) {
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
outputElement((Element) node, indent);
break;
case Node.TEXT_NODE:
outputText((Text) node, indent);
break;
case Node.CDATA_SECTION_NODE:
outputCDATASection((CDATASection) node, indent);
break;
case Node.ruMENT_NODE:
outputComment((Comment) node, indent);
break;
case Node.PROCESSING_INSTRUCTION_NODE:
outputProcessingInstructionNode((ProcessingInstruction) node, indent);
break;
default:
System.out.println("Unknown node type: " + node.getNodeType());
break;
}
}
}
class MyErrorHandler implements ErrorHandler {
public void warning(SAXParseException e) throws SAXException {
show("Warning", e);
throw (e);
}
public void error(SAXParseException e) throws SAXException {
show("Error", e);
throw (e);
}
public void fatalError(SAXParseException e) throws SAXException {
show("Fatal Error", e);
throw (e);
}
private void show(String type, SAXParseException e) {
System.out.println(type + ": " + e.getMessage());
System.out.println("Line " + e.getLineNumber() + " Column " + e.getColumnNumber());
System.out.println("System ID: " + e.getSystemId());
}
}
//File: personWithDTD.xml
<?xml version="1.0" standalone="yes"?>
<!DOCTYPE locations [
<!ELEMENT locations (place)*>
<!ELEMENT place (name | directions)*>
<!ELEMENT name (#PCDATA)>
<!ELEMENT directions (#PCDATA)>
]>
<locations>
<place>
<name>name</name>
<directions>direction</directions>
</place>
</locations>
<?xml version="1.0" standalone="yes"?>
<locations>
<place>
<name>
oldName
</name>
<directions>
</directions>
</place>
</locations>
Inserting a Processing Instruction and Comment
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.rument;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentFragment;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class DOMEdit {
static public void main(String[] arg) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
Document doc = null;
try {
DocumentBuilder builder = dbf.newDocumentBuilder();
builder.setErrorHandler(new MyErrorHandler());
InputSource is = new InputSource("personWithDTD.xml");
doc = builder.parse(is);
addComment(doc);
write(doc);
} catch (Exception e) {
System.err.println(e);
}
}
public static void addComment(Document doc) {
Element root = doc.getDocumentElement();
Element folks = (Element)root.getLastChild();
Comment comment = doc.createComment("Text of the comment");
root.insertBefore(comment,folks);
}
private static final String TAB = " ";
private static void write(Document doc) throws IOException {
outputHeading(doc);
outputElement(doc.getDocumentElement(), "");
}
private static void outputHeading(Document doc) {
System.out.print("<?xml version=\"1.0\"");
DocumentType doctype = doc.getDoctype();
if (doctype != null) {
if ((doctype.getPublicId() == null) && (doctype.getSystemId() == null)) {
System.out.println(" standalone=\"yes\"?>");
} else {
System.out.println(" standalone=\"no\"?>");
}
} else {
System.out.println("?>");
}
}
private static void outputElement(Element node, String indent) {
System.out.print(indent + "<" + node.getTagName());
NamedNodeMap nm = node.getAttributes();
for (int i = 0; i < nm.getLength(); i++) {
Attr attr = (Attr) nm.item(i);
System.out.print(" " + attr.getName() + "=\"" + attr.getValue() + "\"");
}
System.out.println(">");
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); i++)
outputloop(list.item(i), indent + TAB);
System.out.println(indent + "</" + node.getTagName() + ">");
}
private static void outputText(Text node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputCDATASection(CDATASection node, String indent) {
System.out.println(indent + node.getData() );
}
private static void outputComment(Comment node, String indent) {
System.out.println(indent + "<!-- " + node.getData() + " -->");
}
private static void outputProcessingInstructionNode(ProcessingInstruction node, String indent) {
System.out.println(indent + "<?" + node.getTarget() + " " + node.getData() + "?>");
}
private static void outputloop(Node node, String indent) {
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
outputElement((Element) node, indent);
break;
case Node.TEXT_NODE:
outputText((Text) node, indent);
break;
case Node.CDATA_SECTION_NODE:
outputCDATASection((CDATASection) node, indent);
break;
case Node.ruMENT_NODE:
outputComment((Comment) node, indent);
break;
case Node.PROCESSING_INSTRUCTION_NODE:
outputProcessingInstructionNode((ProcessingInstruction) node, indent);
break;
default:
System.out.println("Unknown node type: " + node.getNodeType());
break;
}
}
}
class MyErrorHandler implements ErrorHandler {
public void warning(SAXParseException e) throws SAXException {
show("Warning", e);
throw (e);
}
public void error(SAXParseException e) throws SAXException {
show("Error", e);
throw (e);
}
public void fatalError(SAXParseException e) throws SAXException {
show("Fatal Error", e);
throw (e);
}
private void show(String type, SAXParseException e) {
System.out.println(type + ": " + e.getMessage());
System.out.println("Line " + e.getLineNumber() + " Column " + e.getColumnNumber());
System.out.println("System ID: " + e.getSystemId());
}
}
//File: persionWithDTD.xml
<?xml version="1.0" standalone="yes"?>
<!DOCTYPE locations [
<!ELEMENT locations (place)*>
<!ELEMENT place (name | directions)*>
<!ELEMENT name (#PCDATA)>
<!ELEMENT directions (#PCDATA)>
]>
<locations>
<place>
<name>oldName</name>
<directions>oldDirection</directions>
</place>
</locations>
<?xml version="1.0" standalone="yes"?>
<locations>
<!-- Text of the comment -->
<place>
<name>
oldName
</name>
<directions>
oldDirection
</directions>
</place>
</locations>
Locating a Node and Modifying Text
/*
Code revised from
Java, XML, and JAXP by Arthur Griffith John Wiley & Sons 2002
*/
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.rument;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class DOMEdit {
static public void main(String[] arg) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
Document doc = null;
try {
DocumentBuilder builder = dbf.newDocumentBuilder();
builder.setErrorHandler(new MyErrorHandler());
InputSource is = new InputSource("personWithDTD.xml");
doc = builder.parse(is);
newEmail(doc, "B D", "newEmail");
write(doc);
} catch (Exception e) {
System.err.println(e);
}
}
public static void newEmail(Document doc,String newname,String newemail) {
Element root = doc.getDocumentElement();
NodeList rootlist = root.getChildNodes();
for(int i=0; i<rootlist.getLength(); i++) {
Element person = (Element)rootlist.item(i);
NodeList personlist = person.getChildNodes();
Element name = (Element)personlist.item(0);
NodeList namelist = name.getChildNodes();
Text nametext = (Text)namelist.item(0);
String oldname = nametext.getData();
if(oldname.equals(newname)) {
Element email = (Element)personlist.item(1);
NodeList emaillist = email.getChildNodes();
Text emailtext = (Text)emaillist.item(0);
emailtext.setData(newemail);
}
}
}
private static final String TAB = " ";
private static void write(Document doc) throws IOException {
outputHeading(doc);
outputElement(doc.getDocumentElement(), "");
}
private static void outputHeading(Document doc) {
System.out.print("<?xml version=\"1.0\"");
DocumentType doctype = doc.getDoctype();
if (doctype != null) {
if ((doctype.getPublicId() == null) && (doctype.getSystemId() == null)) {
System.out.println(" standalone=\"yes\"?>");
} else {
System.out.println(" standalone=\"no\"?>");
}
} else {
System.out.println("?>");
}
}
private static void outputElement(Element node, String indent) {
System.out.print(indent + "<" + node.getTagName());
NamedNodeMap nm = node.getAttributes();
for (int i = 0; i < nm.getLength(); i++) {
Attr attr = (Attr) nm.item(i);
System.out.print(" " + attr.getName() + "=\"" + attr.getValue() + "\"");
}
System.out.println(">");
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); i++)
outputloop(list.item(i), indent + TAB);
System.out.println(indent + "</" + node.getTagName() + ">");
}
private static void outputText(Text node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputCDATASection(CDATASection node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputComment(Comment node, String indent) {
System.out.println(indent + "<!-- " + node.getData() + " -->");
}
private static void outputProcessingInstructionNode(ProcessingInstruction node, String indent) {
System.out.println(indent + "<?" + node.getTarget() + " " + node.getData() + "?>");
}
private static void outputloop(Node node, String indent) {
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
outputElement((Element) node, indent);
break;
case Node.TEXT_NODE:
outputText((Text) node, indent);
break;
case Node.CDATA_SECTION_NODE:
outputCDATASection((CDATASection) node, indent);
break;
case Node.ruMENT_NODE:
outputComment((Comment) node, indent);
break;
case Node.PROCESSING_INSTRUCTION_NODE:
outputProcessingInstructionNode((ProcessingInstruction) node, indent);
break;
default:
System.out.println("Unknown node type: " + node.getNodeType());
break;
}
}
}
class MyErrorHandler implements ErrorHandler {
public void warning(SAXParseException e) throws SAXException {
show("Warning", e);
throw (e);
}
public void error(SAXParseException e) throws SAXException {
show("Error", e);
throw (e);
}
public void fatalError(SAXParseException e) throws SAXException {
show("Fatal Error", e);
throw (e);
}
private void show(String type, SAXParseException e) {
System.out.println(type + ": " + e.getMessage());
System.out.println("Line " + e.getLineNumber() + " Column " + e.getColumnNumber());
System.out.println("System ID: " + e.getSystemId());
}
}
//File: personWithDTD.xml
<?xml version="1.0" standalone="yes"?>
<!-- This document is both well formed and valid -->
<!DOCTYPE folks [
<!ELEMENT folks (person)*>
<!ELEMENT person (name, phone, email)>
<!ELEMENT name (#PCDATA)>
<!ELEMENT phone (#PCDATA)>
<!ELEMENT email (#PCDATA)>
]>
<folks>
<person>
<name>B D</name>
<phone>999 555-8888</phone>
<email>b@xyz.net</email>
</person>
</folks>
<?xml version="1.0" standalone="yes"?>
<folks>
<person>
<name>
B D
</name>
<phone>
newEmail
</phone>
<email>
b@xyz.net
</email>
</person>
</folks>
Locating a Node by an ID
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.rument;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class DOMEdit {
static public void main(String[] arg) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
Document doc = null;
try {
DocumentBuilder builder = dbf.newDocumentBuilder();
builder.setErrorHandler(new MyErrorHandler());
InputSource is = new InputSource("personWithDTD.xml");
doc = builder.parse(is);
findByID(doc, "B");
write(doc);
} catch (Exception e) {
System.err.println(e);
}
}
public static void findByID(Document doc,String idName) {
Element name = doc.getElementById(idName);
if(name == null) {
System.out.println("There is no element with the ID "
+ idName);
} else {
Text text = (Text)name.getFirstChild();
System.out.println("The ID " + idName
+ " locates the name " + text.getData());
}
}
private static final String TAB = " ";
private static void write(Document doc) throws IOException {
outputHeading(doc);
outputElement(doc.getDocumentElement(), "");
}
private static void outputHeading(Document doc) {
System.out.print("<?xml version=\"1.0\"");
DocumentType doctype = doc.getDoctype();
if (doctype != null) {
if ((doctype.getPublicId() == null) && (doctype.getSystemId() == null)) {
System.out.println(" standalone=\"yes\"?>");
} else {
System.out.println(" standalone=\"no\"?>");
}
} else {
System.out.println("?>");
}
}
private static void outputElement(Element node, String indent) {
System.out.print(indent + "<" + node.getTagName());
NamedNodeMap nm = node.getAttributes();
for (int i = 0; i < nm.getLength(); i++) {
Attr attr = (Attr) nm.item(i);
System.out.print(" " + attr.getName() + "=\"" + attr.getValue() + "\"");
}
System.out.println(">");
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); i++)
outputloop(list.item(i), indent + TAB);
System.out.println(indent + "</" + node.getTagName() + ">");
}
private static void outputText(Text node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputCDATASection(CDATASection node, String indent) {
System.out.println(indent + node.getData() );
}
private static void outputComment(Comment node, String indent) {
System.out.println(indent + "<!-- " + node.getData() + " -->");
}
private static void outputProcessingInstructionNode(ProcessingInstruction node, String indent) {
System.out.println(indent + "<?" + node.getTarget() + " " + node.getData() + "?>");
}
private static void outputloop(Node node, String indent) {
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
outputElement((Element) node, indent);
break;
case Node.TEXT_NODE:
outputText((Text) node, indent);
break;
case Node.CDATA_SECTION_NODE:
outputCDATASection((CDATASection) node, indent);
break;
case Node.ruMENT_NODE:
outputComment((Comment) node, indent);
break;
case Node.PROCESSING_INSTRUCTION_NODE:
outputProcessingInstructionNode((ProcessingInstruction) node, indent);
break;
default:
System.out.println("Unknown node type: " + node.getNodeType());
break;
}
}
}
class MyErrorHandler implements ErrorHandler {
public void warning(SAXParseException e) throws SAXException {
show("Warning", e);
throw (e);
}
public void error(SAXParseException e) throws SAXException {
show("Error", e);
throw (e);
}
public void fatalError(SAXParseException e) throws SAXException {
show("Fatal Error", e);
throw (e);
}
private void show(String type, SAXParseException e) {
System.out.println(type + ": " + e.getMessage());
System.out.println("Line " + e.getLineNumber() + " Column " + e.getColumnNumber());
System.out.println("System ID: " + e.getSystemId());
}
}
The ID B locates the name BB
Locating a Node by Using Siblings
/*
Code revised from
Java, XML, and JAXP by Arthur Griffith John Wiley & Sons 2002
*/
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.rument;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class DOMEdit {
static public void main(String[] arg) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
Document doc = null;
try {
DocumentBuilder builder = dbf.newDocumentBuilder();
builder.setErrorHandler(new MyErrorHandler());
InputSource is = new InputSource("personWithDTD.xml");
doc = builder.parse(is);
newEmail(doc, "B D", "newEmail");
write(doc);
} catch (Exception e) {
System.err.println(e);
}
}
public static void newEmail(Document doc, String newname, String newemail) {
Element root = doc.getDocumentElement();
Element person = (Element) root.getFirstChild();
while (person != null) {
Element name = (Element) person.getFirstChild();
Text nametext = (Text) name.getFirstChild();
String oldname = nametext.getData();
if (oldname.equals(newname)) {
Element email = (Element) name.getNextSibling();
Text emailtext = (Text) email.getFirstChild();
emailtext.setData(newemail);
}
person = (Element) person.getNextSibling();
}
}
private static final String TAB = " ";
private static void write(Document doc) throws IOException {
outputHeading(doc);
outputElement(doc.getDocumentElement(), "");
}
private static void outputHeading(Document doc) {
System.out.print("<?xml version=\"1.0\"");
DocumentType doctype = doc.getDoctype();
if (doctype != null) {
if ((doctype.getPublicId() == null) && (doctype.getSystemId() == null)) {
System.out.println(" standalone=\"yes\"?>");
} else {
System.out.println(" standalone=\"no\"?>");
}
} else {
System.out.println("?>");
}
}
private static void outputElement(Element node, String indent) {
System.out.print(indent + "<" + node.getTagName());
NamedNodeMap nm = node.getAttributes();
for (int i = 0; i < nm.getLength(); i++) {
Attr attr = (Attr) nm.item(i);
System.out.print(" " + attr.getName() + "=\"" + attr.getValue() + "\"");
}
System.out.println(">");
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); i++)
outputloop(list.item(i), indent + TAB);
System.out.println(indent + "</" + node.getTagName() + ">");
}
private static void outputText(Text node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputCDATASection(CDATASection node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputComment(Comment node, String indent) {
System.out.println(indent + "<!-- " + node.getData() + " -->");
}
private static void outputProcessingInstructionNode(ProcessingInstruction node, String indent) {
System.out.println(indent + "<?" + node.getTarget() + " " + node.getData() + "?>");
}
private static void outputloop(Node node, String indent) {
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
outputElement((Element) node, indent);
break;
case Node.TEXT_NODE:
outputText((Text) node, indent);
break;
case Node.CDATA_SECTION_NODE:
outputCDATASection((CDATASection) node, indent);
break;
case Node.ruMENT_NODE:
outputComment((Comment) node, indent);
break;
case Node.PROCESSING_INSTRUCTION_NODE:
outputProcessingInstructionNode((ProcessingInstruction) node, indent);
break;
default:
System.out.println("Unknown node type: " + node.getNodeType());
break;
}
}
}
class MyErrorHandler implements ErrorHandler {
public void warning(SAXParseException e) throws SAXException {
show("Warning", e);
throw (e);
}
public void error(SAXParseException e) throws SAXException {
show("Error", e);
throw (e);
}
public void fatalError(SAXParseException e) throws SAXException {
show("Fatal Error", e);
throw (e);
}
private void show(String type, SAXParseException e) {
System.out.println(type + ": " + e.getMessage());
System.out.println("Line " + e.getLineNumber() + " Column " + e.getColumnNumber());
System.out.println("System ID: " + e.getSystemId());
}
}
//File: personWithDTD.xml
<?xml version="1.0" standalone="yes"?>
<!-- This document is both well formed and valid -->
<!DOCTYPE folks [
<!ELEMENT folks (person)*>
<!ELEMENT person (name, phone, email)>
<!ELEMENT name (#PCDATA)>
<!ELEMENT phone (#PCDATA)>
<!ELEMENT email (#PCDATA)>
]>
<folks>
<person>
<name>B D</name>
<phone>999 555-8888</phone>
<email>b@xyz.net</email>
</person>
</folks>
Locating Elements by Tag Name
/*
Code revised from
Java, XML, and JAXP by Arthur Griffith John Wiley & Sons 2002
*/
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.rument;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class DOMEdit {
static public void main(String[] arg) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
Document doc = null;
try {
DocumentBuilder builder = dbf.newDocumentBuilder();
builder.setErrorHandler(new MyErrorHandler());
InputSource is = new InputSource("personWithDTD.xml");
doc = builder.parse(is);
makeNamelist(doc);
write(doc);
} catch (Exception e) {
System.err.println(e);
}
}
private static void makeNamelist(Document doc) {
String names = null;
Element root = doc.getDocumentElement();
NodeList nameElements = root.getElementsByTagName("name");
for(int i=0; i<nameElements.getLength(); i++) {
Element name = (Element)nameElements.item(i);
Text nametext = (Text)name.getFirstChild();
if(names == null){
names = nametext.getData();
}else{
names += ", " + nametext.getData();
}
}
Element namelist = doc.createElement("names");
Text namelisttext = doc.createTextNode(names);
namelist.appendChild(namelisttext);
root.insertBefore(namelist,root.getFirstChild());
}
private static final String TAB = " ";
private static void write(Document doc) throws IOException {
outputHeading(doc);
outputElement(doc.getDocumentElement(), "");
}
private static void outputHeading(Document doc) {
System.out.print("<?xml version=\"1.0\"");
DocumentType doctype = doc.getDoctype();
if (doctype != null) {
if ((doctype.getPublicId() == null) && (doctype.getSystemId() == null)) {
System.out.println(" standalone=\"yes\"?>");
} else {
System.out.println(" standalone=\"no\"?>");
}
} else {
System.out.println("?>");
}
}
private static void outputElement(Element node, String indent) {
System.out.print(indent + "<" + node.getTagName());
NamedNodeMap nm = node.getAttributes();
for (int i = 0; i < nm.getLength(); i++) {
Attr attr = (Attr) nm.item(i);
System.out.print(" " + attr.getName() + "=\"" + attr.getValue() + "\"");
}
System.out.println(">");
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); i++)
outputloop(list.item(i), indent + TAB);
System.out.println(indent + "</" + node.getTagName() + ">");
}
private static void outputText(Text node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputCDATASection(CDATASection node, String indent) {
System.out.println(indent + node.getData() );
}
private static void outputComment(Comment node, String indent) {
System.out.println(indent + "<!-- " + node.getData() + " -->");
}
private static void outputProcessingInstructionNode(ProcessingInstruction node, String indent) {
System.out.println(indent + "<?" + node.getTarget() + " " + node.getData() + "?>");
}
private static void outputloop(Node node, String indent) {
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
outputElement((Element) node, indent);
break;
case Node.TEXT_NODE:
outputText((Text) node, indent);
break;
case Node.CDATA_SECTION_NODE:
outputCDATASection((CDATASection) node, indent);
break;
case Node.ruMENT_NODE:
outputComment((Comment) node, indent);
break;
case Node.PROCESSING_INSTRUCTION_NODE:
outputProcessingInstructionNode((ProcessingInstruction) node, indent);
break;
default:
System.out.println("Unknown node type: " + node.getNodeType());
break;
}
}
}
class MyErrorHandler implements ErrorHandler {
public void warning(SAXParseException e) throws SAXException {
show("Warning", e);
throw (e);
}
public void error(SAXParseException e) throws SAXException {
show("Error", e);
throw (e);
}
public void fatalError(SAXParseException e) throws SAXException {
show("Fatal Error", e);
throw (e);
}
private void show(String type, SAXParseException e) {
System.out.println(type + ": " + e.getMessage());
System.out.println("Line " + e.getLineNumber() + " Column " + e.getColumnNumber());
System.out.println("System ID: " + e.getSystemId());
}
}
//File: personWithDTD.xml
<?xml version="1.0" standalone="yes"?>
<!-- This document is both well formed and valid -->
<!DOCTYPE folks [
<!ELEMENT folks (person)*>
<!ELEMENT person (name, phone, email)>
<!ELEMENT name (#PCDATA)>
<!ELEMENT phone (#PCDATA)>
<!ELEMENT email (#PCDATA)>
]>
<folks>
<person>
<name>B D</name>
<phone>999 555-8888</phone>
<email>b@xyz.net</email>
</person>
</folks>
<?xml version="1.0" standalone="yes"?>
<folks>
<names>
B D
</names>
<person>
<name>
B D
</name>
<phone>
999 555-8888
</phone>
<email>
b@xyz.net
</email>
</person>
</folks>
Methods to Insert a Processing Instruction and a Comment
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.rument;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentFragment;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class DOMEdit {
static public void main(String[] arg) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
Document doc = null;
try {
DocumentBuilder builder = dbf.newDocumentBuilder();
builder.setErrorHandler(new MyErrorHandler());
InputSource is = new InputSource("personWithDTD.xml");
doc = builder.parse(is);
addProcessingInstruction(doc);
write(doc);
} catch (Exception e) {
System.err.println(e);
}
}
public static void addProcessingInstruction(Document doc) {
Element root = doc.getDocumentElement();
Element folks = (Element)root.getLastChild();
ProcessingInstruction pi;
pi = (ProcessingInstruction)doc.createProcessingInstruction(
"validate",
"phone=\"lookup\"");
root.insertBefore(pi,folks);
}
private static final String TAB = " ";
private static void write(Document doc) throws IOException {
outputHeading(doc);
outputElement(doc.getDocumentElement(), "");
}
private static void outputHeading(Document doc) {
System.out.print("<?xml version=\"1.0\"");
DocumentType doctype = doc.getDoctype();
if (doctype != null) {
if ((doctype.getPublicId() == null) && (doctype.getSystemId() == null)) {
System.out.println(" standalone=\"yes\"?>");
} else {
System.out.println(" standalone=\"no\"?>");
}
} else {
System.out.println("?>");
}
}
private static void outputElement(Element node, String indent) {
System.out.print(indent + "<" + node.getTagName());
NamedNodeMap nm = node.getAttributes();
for (int i = 0; i < nm.getLength(); i++) {
Attr attr = (Attr) nm.item(i);
System.out.print(" " + attr.getName() + "=\"" + attr.getValue() + "\"");
}
System.out.println(">");
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); i++)
outputloop(list.item(i), indent + TAB);
System.out.println(indent + "</" + node.getTagName() + ">");
}
private static void outputText(Text node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputCDATASection(CDATASection node, String indent) {
System.out.println(indent + node.getData() );
}
private static void outputComment(Comment node, String indent) {
System.out.println(indent + "<!-- " + node.getData() + " -->");
}
private static void outputProcessingInstructionNode(ProcessingInstruction node, String indent) {
System.out.println(indent + "<?" + node.getTarget() + " " + node.getData() + "?>");
}
private static void outputloop(Node node, String indent) {
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
outputElement((Element) node, indent);
break;
case Node.TEXT_NODE:
outputText((Text) node, indent);
break;
case Node.CDATA_SECTION_NODE:
outputCDATASection((CDATASection) node, indent);
break;
case Node.ruMENT_NODE:
outputComment((Comment) node, indent);
break;
case Node.PROCESSING_INSTRUCTION_NODE:
outputProcessingInstructionNode((ProcessingInstruction) node, indent);
break;
default:
System.out.println("Unknown node type: " + node.getNodeType());
break;
}
}
}
class MyErrorHandler implements ErrorHandler {
public void warning(SAXParseException e) throws SAXException {
show("Warning", e);
throw (e);
}
public void error(SAXParseException e) throws SAXException {
show("Error", e);
throw (e);
}
public void fatalError(SAXParseException e) throws SAXException {
show("Fatal Error", e);
throw (e);
}
private void show(String type, SAXParseException e) {
System.out.println(type + ": " + e.getMessage());
System.out.println("Line " + e.getLineNumber() + " Column " + e.getColumnNumber());
System.out.println("System ID: " + e.getSystemId());
}
}
//File: persionWithDTD.xml
<?xml version="1.0" standalone="yes"?>
<!DOCTYPE locations [
<!ELEMENT locations (place)*>
<!ELEMENT place (name | directions)*>
<!ELEMENT name (#PCDATA)>
<!ELEMENT directions (#PCDATA)>
]>
<locations>
<place>
<name>oldName</name>
<directions>oldDirection</directions>
</place>
</locations>
<?xml version="1.0" standalone="yes"?>
<locations>
<?validate phone="lookup"?>
<place>
<name>
oldName
</name>
<directions>
oldDirection
</directions>
</place>
</locations>
Modifying Text by Cutting and Pasting
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.rument;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class DOMEdit {
static public void main(String[] arg) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
Document doc = null;
try {
DocumentBuilder builder = dbf.newDocumentBuilder();
builder.setErrorHandler(new MyErrorHandler());
InputSource is = new InputSource("personWithDTD.xml");
doc = builder.parse(is);
modifyingTextbyCuttingandPasting(doc);
write(doc);
} catch (Exception e) {
System.err.println(e);
}
}
public static void modifyingTextbyCuttingandPasting(Document doc) {
Element root = doc.getDocumentElement();
Element place = (Element)root.getFirstChild();
Text name = (Text)place.getFirstChild().getFirstChild();
Text directions = (Text)place.getLastChild().getFirstChild();
// name.deleteData(offset,count);
name.deleteData(2,3);
//String bridge = directions.substringData(offset,count);
String bridge = directions.substringData(2,3);
name.appendData(bridge);
}
private static final String TAB = " ";
private static void write(Document doc) throws IOException {
outputHeading(doc);
outputElement(doc.getDocumentElement(), "");
}
private static void outputHeading(Document doc) {
System.out.print("<?xml version=\"1.0\"");
DocumentType doctype = doc.getDoctype();
if (doctype != null) {
if ((doctype.getPublicId() == null) && (doctype.getSystemId() == null)) {
System.out.println(" standalone=\"yes\"?>");
} else {
System.out.println(" standalone=\"no\"?>");
}
} else {
System.out.println("?>");
}
}
private static void outputElement(Element node, String indent) {
System.out.print(indent + "<" + node.getTagName());
NamedNodeMap nm = node.getAttributes();
for (int i = 0; i < nm.getLength(); i++) {
Attr attr = (Attr) nm.item(i);
System.out.print(" " + attr.getName() + "=\"" + attr.getValue() + "\"");
}
System.out.println(">");
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); i++)
outputloop(list.item(i), indent + TAB);
System.out.println(indent + "</" + node.getTagName() + ">");
}
private static void outputText(Text node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputCDATASection(CDATASection node, String indent) {
System.out.println(indent + node.getData() );
}
private static void outputComment(Comment node, String indent) {
System.out.println(indent + "<!-- " + node.getData() + " -->");
}
private static void outputProcessingInstructionNode(ProcessingInstruction node, String indent) {
System.out.println(indent + "<?" + node.getTarget() + " " + node.getData() + "?>");
}
private static void outputloop(Node node, String indent) {
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
outputElement((Element) node, indent);
break;
case Node.TEXT_NODE:
outputText((Text) node, indent);
break;
case Node.CDATA_SECTION_NODE:
outputCDATASection((CDATASection) node, indent);
break;
case Node.ruMENT_NODE:
outputComment((Comment) node, indent);
break;
case Node.PROCESSING_INSTRUCTION_NODE:
outputProcessingInstructionNode((ProcessingInstruction) node, indent);
break;
default:
System.out.println("Unknown node type: " + node.getNodeType());
break;
}
}
}
class MyErrorHandler implements ErrorHandler {
public void warning(SAXParseException e) throws SAXException {
show("Warning", e);
throw (e);
}
public void error(SAXParseException e) throws SAXException {
show("Error", e);
throw (e);
}
public void fatalError(SAXParseException e) throws SAXException {
show("Fatal Error", e);
throw (e);
}
private void show(String type, SAXParseException e) {
System.out.println(type + ": " + e.getMessage());
System.out.println("Line " + e.getLineNumber() + " Column " + e.getColumnNumber());
System.out.println("System ID: " + e.getSystemId());
}
}
//File: personWithDTD.xml
<?xml version="1.0" standalone="yes"?>
<!DOCTYPE locations [
<!ELEMENT locations (place)*>
<!ELEMENT place (name | directions)*>
<!ELEMENT name (#PCDATA)>
<!ELEMENT directions (#PCDATA)>
]>
<locations>
<place>
<name>name</name>
<directions>direction</directions>
</place>
</locations>
<?xml version="1.0" standalone="yes"?>
<locations>
<place>
<name>
olmedDi
</name>
<directions>
oldDirection
</directions>
</place>
</locations>
Moving and Copying Attributes
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.rument;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class DOMEdit {
static public void main(String[] arg) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
Document doc = null;
try {
DocumentBuilder builder = dbf.newDocumentBuilder();
builder.setErrorHandler(new MyErrorHandler());
InputSource is = new InputSource("personWithDTD.xml");
doc = builder.parse(is);
dupAttributes(doc);
write(doc);
} catch (Exception e) {
System.err.println(e);
}
}
public static void dupAttributes(Document doc) {
Element root = doc.getDocumentElement();
Element personOne = (Element)root.getFirstChild();
Attr deptAttr = personOne.getAttributeNode("dept");
personOne.removeAttributeNode(deptAttr);
String deptString = deptAttr.getValue();
personOne.setAttribute("dept",deptString+" updated");
String mailString = personOne.getAttribute("mail");
personOne.setAttribute("mail",mailString+" updated");
String titleString = personOne.getAttribute("title");
//personOne.removeAttribute("title");
personOne.setAttribute("title",titleString+" updated");
}
private static final String TAB = " ";
private static void write(Document doc) throws IOException {
outputHeading(doc);
outputElement(doc.getDocumentElement(), "");
}
private static void outputHeading(Document doc) {
System.out.print("<?xml version=\"1.0\"");
DocumentType doctype = doc.getDoctype();
if (doctype != null) {
if ((doctype.getPublicId() == null) && (doctype.getSystemId() == null)) {
System.out.println(" standalone=\"yes\"?>");
} else {
System.out.println(" standalone=\"no\"?>");
}
} else {
System.out.println("?>");
}
}
private static void outputElement(Element node, String indent) {
System.out.print(indent + "<" + node.getTagName());
NamedNodeMap nm = node.getAttributes();
for (int i = 0; i < nm.getLength(); i++) {
Attr attr = (Attr) nm.item(i);
System.out.print(" " + attr.getName() + "=\"" + attr.getValue() + "\"");
}
System.out.println(">");
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); i++)
outputloop(list.item(i), indent + TAB);
System.out.println(indent + "</" + node.getTagName() + ">");
}
private static void outputText(Text node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputCDATASection(CDATASection node, String indent) {
System.out.println(indent + node.getData() );
}
private static void outputComment(Comment node, String indent) {
System.out.println(indent + "<!-- " + node.getData() + " -->");
}
private static void outputProcessingInstructionNode(ProcessingInstruction node, String indent) {
System.out.println(indent + "<?" + node.getTarget() + " " + node.getData() + "?>");
}
private static void outputloop(Node node, String indent) {
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
outputElement((Element) node, indent);
break;
case Node.TEXT_NODE:
outputText((Text) node, indent);
break;
case Node.CDATA_SECTION_NODE:
outputCDATASection((CDATASection) node, indent);
break;
case Node.ruMENT_NODE:
outputComment((Comment) node, indent);
break;
case Node.PROCESSING_INSTRUCTION_NODE:
outputProcessingInstructionNode((ProcessingInstruction) node, indent);
break;
default:
System.out.println("Unknown node type: " + node.getNodeType());
break;
}
}
}
class MyErrorHandler implements ErrorHandler {
public void warning(SAXParseException e) throws SAXException {
show("Warning", e);
throw (e);
}
public void error(SAXParseException e) throws SAXException {
show("Error", e);
throw (e);
}
public void fatalError(SAXParseException e) throws SAXException {
show("Fatal Error", e);
throw (e);
}
private void show(String type, SAXParseException e) {
System.out.println(type + ": " + e.getMessage());
System.out.println("Line " + e.getLineNumber() + " Column " + e.getColumnNumber());
System.out.println("System ID: " + e.getSystemId());
}
}
//File: personDTD.xml
<?xml version="1.0" standalone="yes"?>
<!-- This document is both well formed and valid -->
<!DOCTYPE folks [
<!ELEMENT folks (person)*>
<!ELEMENT person (name, phone, email)>
<!ELEMENT name (#PCDATA)>
<!ELEMENT phone (#PCDATA)>
<!ELEMENT email (#PCDATA)>
<!ATTLIST person number CDATA #IMPLIED
dept CDATA #IMPLIED
mail CDATA #IMPLIED
title CDATA #IMPLIED>
]>
<folks>
<person number="3412" dept="medical" mail="mailValue" title="titleValue">
<name>B D</name>
<phone>999 555-8888</phone>
<email>b@xyz.net</email>
</person>
</folks>
<?xml version="1.0" standalone="yes"?>
<folks>
<person dept="medical updated" mail="mailValue updated" number="3412" title="titleValue updated">
<name>
B D
</name>
<phone>
999 555-8888
</phone>
<email>
b@xyz.net
</email>
</person>
</folks>
Moving Nodes between Documents: Copy a Node from One Parse Tree into Another
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.rument;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class DOMEdit {
static public void main(String[] arg) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
Document doc = null;
try {
DocumentBuilder builder = dbf.newDocumentBuilder();
builder.setErrorHandler(new MyErrorHandler());
InputSource is = new InputSource("personWithDTD.xml");
doc = builder.parse(is);
importName(doc, doc);
write(doc);
} catch (Exception e) {
System.err.println(e);
}
}
public static void importName(Document doc1,Document doc2) {
Element root1 = doc1.getDocumentElement();
Element personInDoc1 = (Element)root1.getFirstChild();
Node importedPerson = doc2.importNode(personInDoc1,true);
Element root2 = doc2.getDocumentElement();
root2.appendChild(importedPerson);
}
private static final String TAB = " ";
private static void write(Document doc) throws IOException {
outputHeading(doc);
outputElement(doc.getDocumentElement(), "");
}
private static void outputHeading(Document doc) {
System.out.print("<?xml version=\"1.0\"");
DocumentType doctype = doc.getDoctype();
if (doctype != null) {
if ((doctype.getPublicId() == null) && (doctype.getSystemId() == null)) {
System.out.println(" standalone=\"yes\"?>");
} else {
System.out.println(" standalone=\"no\"?>");
}
} else {
System.out.println("?>");
}
}
private static void outputElement(Element node, String indent) {
System.out.print(indent + "<" + node.getTagName());
NamedNodeMap nm = node.getAttributes();
for (int i = 0; i < nm.getLength(); i++) {
Attr attr = (Attr) nm.item(i);
System.out.print(" " + attr.getName() + "=\"" + attr.getValue() + "\"");
}
System.out.println(">");
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); i++)
outputloop(list.item(i), indent + TAB);
System.out.println(indent + "</" + node.getTagName() + ">");
}
private static void outputText(Text node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputCDATASection(CDATASection node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputComment(Comment node, String indent) {
System.out.println(indent + "<!-- " + node.getData() + " -->");
}
private static void outputProcessingInstructionNode(ProcessingInstruction node, String indent) {
System.out.println(indent + "<?" + node.getTarget() + " " + node.getData() + "?>");
}
private static void outputloop(Node node, String indent) {
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
outputElement((Element) node, indent);
break;
case Node.TEXT_NODE:
outputText((Text) node, indent);
break;
case Node.CDATA_SECTION_NODE:
outputCDATASection((CDATASection) node, indent);
break;
case Node.ruMENT_NODE:
outputComment((Comment) node, indent);
break;
case Node.PROCESSING_INSTRUCTION_NODE:
outputProcessingInstructionNode((ProcessingInstruction) node, indent);
break;
default:
System.out.println("Unknown node type: " + node.getNodeType());
break;
}
}
}
class MyErrorHandler implements ErrorHandler {
public void warning(SAXParseException e) throws SAXException {
show("Warning", e);
throw (e);
}
public void error(SAXParseException e) throws SAXException {
show("Error", e);
throw (e);
}
public void fatalError(SAXParseException e) throws SAXException {
show("Fatal Error", e);
throw (e);
}
private void show(String type, SAXParseException e) {
System.out.println(type + ": " + e.getMessage());
System.out.println("Line " + e.getLineNumber() + " Column " + e.getColumnNumber());
System.out.println("System ID: " + e.getSystemId());
}
}
//File: persionWithDTD.xml
<?xml version="1.0" standalone="yes"?>
<!DOCTYPE locations [
<!ELEMENT locations (place)*>
<!ELEMENT place (name | directions)*>
<!ELEMENT name (#PCDATA)>
<!ELEMENT directions (#PCDATA)>
]>
<locations>
<place>
<name>oldName</name>
<directions>oldDirection</directions>
</place>
</locations>
<?xml version="1.0" standalone="yes"?>
<locations>
<place>
<name>
oldName
</name>
<directions>
oldDirection
</directions>
</place>
<place>
<name>
oldName
</name>
<directions>
oldDirection
</directions>
</place>
</locations>
Normalize All of the Text in a Document
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.rument;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class DOMEdit {
static public void main(String[] arg) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
Document doc = null;
try {
DocumentBuilder builder = dbf.newDocumentBuilder();
builder.setErrorHandler(new MyErrorHandler());
InputSource is = new InputSource("personWithDTD.xml");
doc = builder.parse(is);
normalize(doc);
write(doc);
} catch (Exception e) {
System.err.println(e);
}
}
public static void normalize(Document doc) {
Element root = doc.getDocumentElement();
root.normalize();
}
private static final String TAB = " ";
private static void write(Document doc) throws IOException {
outputHeading(doc);
outputElement(doc.getDocumentElement(), "");
}
private static void outputHeading(Document doc) {
System.out.print("<?xml version=\"1.0\"");
DocumentType doctype = doc.getDoctype();
if (doctype != null) {
if ((doctype.getPublicId() == null) && (doctype.getSystemId() == null)) {
System.out.println(" standalone=\"yes\"?>");
} else {
System.out.println(" standalone=\"no\"?>");
}
} else {
System.out.println("?>");
}
}
private static void outputElement(Element node, String indent) {
System.out.print(indent + "<" + node.getTagName());
NamedNodeMap nm = node.getAttributes();
for (int i = 0; i < nm.getLength(); i++) {
Attr attr = (Attr) nm.item(i);
System.out.print(" " + attr.getName() + "=\"" + attr.getValue() + "\"");
}
System.out.println(">");
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); i++)
outputloop(list.item(i), indent + TAB);
System.out.println(indent + "</" + node.getTagName() + ">");
}
private static void outputText(Text node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputCDATASection(CDATASection node, String indent) {
System.out.println(indent + node.getData() );
}
private static void outputComment(Comment node, String indent) {
System.out.println(indent + "<!-- " + node.getData() + " -->");
}
private static void outputProcessingInstructionNode(ProcessingInstruction node, String indent) {
System.out.println(indent + "<?" + node.getTarget() + " " + node.getData() + "?>");
}
private static void outputloop(Node node, String indent) {
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
outputElement((Element) node, indent);
break;
case Node.TEXT_NODE:
outputText((Text) node, indent);
break;
case Node.CDATA_SECTION_NODE:
outputCDATASection((CDATASection) node, indent);
break;
case Node.ruMENT_NODE:
outputComment((Comment) node, indent);
break;
case Node.PROCESSING_INSTRUCTION_NODE:
outputProcessingInstructionNode((ProcessingInstruction) node, indent);
break;
default:
System.out.println("Unknown node type: " + node.getNodeType());
break;
}
}
}
class MyErrorHandler implements ErrorHandler {
public void warning(SAXParseException e) throws SAXException {
show("Warning", e);
throw (e);
}
public void error(SAXParseException e) throws SAXException {
show("Error", e);
throw (e);
}
public void fatalError(SAXParseException e) throws SAXException {
show("Fatal Error", e);
throw (e);
}
private void show(String type, SAXParseException e) {
System.out.println(type + ": " + e.getMessage());
System.out.println("Line " + e.getLineNumber() + " Column " + e.getColumnNumber());
System.out.println("System ID: " + e.getSystemId());
}
}
//File: personWithDTD.xml
<?xml version="1.0" standalone="yes"?>
<!DOCTYPE locations [
<!ELEMENT locations (place)*>
<!ELEMENT place (name | directions)*>
<!ELEMENT name (#PCDATA)>
<!ELEMENT directions (#PCDATA)>
]>
<locations>
<place>
<name>name</name>
<directions>direction</directions>
</place>
</locations>
Replacing a Tree Node: Replacing an Existing Node with a New One
/*
Code revised from
Java, XML, and JAXP by Arthur Griffith John Wiley & Sons 2002
*/
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.rument;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class DOMEdit {
static public void main(String[] arg) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
Document doc = null;
try {
DocumentBuilder builder = dbf.newDocumentBuilder();
builder.setErrorHandler(new MyErrorHandler());
InputSource is = new InputSource("personWithDTD.xml");
doc = builder.parse(is);
replacePerson(doc,"newName","111111","newEmail@email.ru");
write(doc);
} catch (Exception e) {
System.err.println(e);
}
}
public static void replacePerson(Document doc, String name, String phone, String email) {
Element newPersonNode = doc.createElement("person");
Element nameNode = doc.createElement("name");
newPersonNode.appendChild(nameNode);
Text nametextNode = doc.createTextNode(name);
nameNode.appendChild(nametextNode);
Element phoneNode = doc.createElement("phone");
newPersonNode.appendChild(phoneNode);
Text phonetextNode = doc.createTextNode(phone);
phoneNode.appendChild(phonetextNode);
Element emailNode = doc.createElement("email");
newPersonNode.appendChild(emailNode);
Text emailtextNode = doc.createTextNode(email);
emailNode.appendChild(emailtextNode);
Element root = doc.getDocumentElement();
Element oldPersonNode = (Element) root.getFirstChild();
root.replaceChild(newPersonNode, oldPersonNode);
}
private static final String TAB = " ";
private static void write(Document doc) throws IOException {
outputHeading(doc);
outputElement(doc.getDocumentElement(), "");
}
private static void outputHeading(Document doc) {
System.out.print("<?xml version=\"1.0\"");
DocumentType doctype = doc.getDoctype();
if (doctype != null) {
if ((doctype.getPublicId() == null) && (doctype.getSystemId() == null)) {
System.out.println(" standalone=\"yes\"?>");
} else {
System.out.println(" standalone=\"no\"?>");
}
} else {
System.out.println("?>");
}
}
private static void outputElement(Element node, String indent) {
System.out.print(indent + "<" + node.getTagName());
NamedNodeMap nm = node.getAttributes();
for (int i = 0; i < nm.getLength(); i++) {
Attr attr = (Attr) nm.item(i);
System.out.print(" " + attr.getName() + "=\"" + attr.getValue() + "\"");
}
System.out.println(">");
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); i++)
outputloop(list.item(i), indent + TAB);
System.out.println(indent + "</" + node.getTagName() + ">");
}
private static void outputText(Text node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputCDATASection(CDATASection node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputComment(Comment node, String indent) {
System.out.println(indent + "<!-- " + node.getData() + " -->");
}
private static void outputProcessingInstructionNode(ProcessingInstruction node, String indent) {
System.out.println(indent + "<?" + node.getTarget() + " " + node.getData() + "?>");
}
private static void outputloop(Node node, String indent) {
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
outputElement((Element) node, indent);
break;
case Node.TEXT_NODE:
outputText((Text) node, indent);
break;
case Node.CDATA_SECTION_NODE:
outputCDATASection((CDATASection) node, indent);
break;
case Node.ruMENT_NODE:
outputComment((Comment) node, indent);
break;
case Node.PROCESSING_INSTRUCTION_NODE:
outputProcessingInstructionNode((ProcessingInstruction) node, indent);
break;
default:
System.out.println("Unknown node type: " + node.getNodeType());
break;
}
}
}
class MyErrorHandler implements ErrorHandler {
public void warning(SAXParseException e) throws SAXException {
show("Warning", e);
throw (e);
}
public void error(SAXParseException e) throws SAXException {
show("Error", e);
throw (e);
}
public void fatalError(SAXParseException e) throws SAXException {
show("Fatal Error", e);
throw (e);
}
private void show(String type, SAXParseException e) {
System.out.println(type + ": " + e.getMessage());
System.out.println("Line " + e.getLineNumber() + " Column " + e.getColumnNumber());
System.out.println("System ID: " + e.getSystemId());
}
}
//File: personWithDTD.xml
<?xml version="1.0" standalone="yes"?>
<!-- This document is both well formed and valid -->
<!DOCTYPE folks [
<!ELEMENT folks (person)*>
<!ELEMENT person (name, phone, email)>
<!ELEMENT name (#PCDATA)>
<!ELEMENT phone (#PCDATA)>
<!ELEMENT email (#PCDATA)>
]>
<folks>
<person>
<name>B D</name>
<phone>999 555-8888</phone>
<email>b@xyz.net</email>
</person>
</folks>
Setting an Attribute
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.rument;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
public class DOMEdit {
static public void main(String[] arg) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setValidating(true);
dbf.setNamespaceAware(true);
dbf.setIgnoringElementContentWhitespace(true);
Document doc = null;
try {
DocumentBuilder builder = dbf.newDocumentBuilder();
builder.setErrorHandler(new MyErrorHandler());
InputSource is = new InputSource("personWithDTD.xml");
doc = builder.parse(is);
addAttribute(doc);
write(doc);
} catch (Exception e) {
System.err.println(e);
}
}
public static void addAttribute(Document doc) {
Element root = doc.getDocumentElement();
Element person = (Element)root.getFirstChild();
person.setAttribute("company","yourCom");
}
private static final String TAB = " ";
private static void write(Document doc) throws IOException {
outputHeading(doc);
outputElement(doc.getDocumentElement(), "");
}
private static void outputHeading(Document doc) {
System.out.print("<?xml version=\"1.0\"");
DocumentType doctype = doc.getDoctype();
if (doctype != null) {
if ((doctype.getPublicId() == null) && (doctype.getSystemId() == null)) {
System.out.println(" standalone=\"yes\"?>");
} else {
System.out.println(" standalone=\"no\"?>");
}
} else {
System.out.println("?>");
}
}
private static void outputElement(Element node, String indent) {
System.out.print(indent + "<" + node.getTagName());
NamedNodeMap nm = node.getAttributes();
for (int i = 0; i < nm.getLength(); i++) {
Attr attr = (Attr) nm.item(i);
System.out.print(" " + attr.getName() + "=\"" + attr.getValue() + "\"");
}
System.out.println(">");
NodeList list = node.getChildNodes();
for (int i = 0; i < list.getLength(); i++)
outputloop(list.item(i), indent + TAB);
System.out.println(indent + "</" + node.getTagName() + ">");
}
private static void outputText(Text node, String indent) {
System.out.println(indent + node.getData());
}
private static void outputCDATASection(CDATASection node, String indent) {
System.out.println(indent + node.getData() );
}
private static void outputComment(Comment node, String indent) {
System.out.println(indent + "<!-- " + node.getData() + " -->");
}
private static void outputProcessingInstructionNode(ProcessingInstruction node, String indent) {
System.out.println(indent + "<?" + node.getTarget() + " " + node.getData() + "?>");
}
private static void outputloop(Node node, String indent) {
switch (node.getNodeType()) {
case Node.ELEMENT_NODE:
outputElement((Element) node, indent);
break;
case Node.TEXT_NODE:
outputText((Text) node, indent);
break;
case Node.CDATA_SECTION_NODE:
outputCDATASection((CDATASection) node, indent);
break;
case Node.ruMENT_NODE:
outputComment((Comment) node, indent);
break;
case Node.PROCESSING_INSTRUCTION_NODE:
outputProcessingInstructionNode((ProcessingInstruction) node, indent);
break;
default:
System.out.println("Unknown node type: " + node.getNodeType());
break;
}
}
}
class MyErrorHandler implements ErrorHandler {
public void warning(SAXParseException e) throws SAXException {
show("Warning", e);
throw (e);
}
public void error(SAXParseException e) throws SAXException {
show("Error", e);
throw (e);
}
public void fatalError(SAXParseException e) throws SAXException {
show("Fatal Error", e);
throw (e);
}
private void show(String type, SAXParseException e) {
System.out.println(type + ": " + e.getMessage());
System.out.println("Line " + e.getLineNumber() + " Column " + e.getColumnNumber());
System.out.println("System ID: " + e.getSystemId());
}
}
//File: personWithDTD.xml
<?xml version="1.0" standalone="yes"?>
<!-- This document is both well formed and valid -->
<!DOCTYPE folks [
<!ELEMENT folks (person)*>
<!ELEMENT person (name, phone, email)>
<!ELEMENT name (#PCDATA)>
<!ELEMENT phone (#PCDATA)>
<!ELEMENT email (#PCDATA)>
<!ATTLIST person number CDATA #IMPLIED
dept CDATA "staff">
]>
<folks>
<person number="3412" dept="medical">
<name>B D</name>
<phone>999 555-8888</phone>
<email>b@xyz.net</email>
</person>
</folks>
<?xml version="1.0" standalone="yes"?>
<folks>
<person company="yourCom" dept="medical" number="3412">
<name>
B D
</name>
<phone>
999 555-8888
</phone>
<email>
b@xyz.net
</email>
</person>
</folks>
Start a new XML Document
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
public class Utils {
/**
* Start a new XML Document.
* @param rootName The name of the Document root Element (created here)
* @return the Document
* @throws DomException
*/
public static Document createXmlDocument(String rootName) {
Document document = getXmlDocumentBuilder().newDocument();
Element root = document.createElement(rootName);
document.appendChild(root);
return document;
}
/**
* Get a DOM Document builder.
* @return The DocumentBuilder
* @throws DomException
*/
public static DocumentBuilder getXmlDocumentBuilder() {
try {
DocumentBuilderFactory factory;
factory = DocumentBuilderFactory.newInstance();
factory.setNamespaceAware(false);
return factory.newDocumentBuilder();
} catch (Exception e) {
}
return null;
}
}
