Mega Code Archive
DOM Parser In JSP
<![CDATA[
Jsp code
<!--
Sams Teach Yourself JavaServer Pages in 21 Days (Paperback)
by Steven Holzner (Author), Steve Holzner (Author)
# Publisher: Sams; 1st edition (September 19, 2002)
# Language: English
# ISBN-10: 0672324490
# ISBN-13: 978-0672324499
-->
<%@ page import="javax.xml.parsers.*, org.xml.sax.*, org.xml.sax.helpers.*, org.w3c.dom.*, java.io.*"
%>
<%!
public class xparser
{
String displayStrings[] = new String[1000];
int numberDisplayLines = 0;
public String[] displayDocument(String uri)
{
try {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = null;
try {
db = dbf.newDocumentBuilder();
}
catch (ParserConfigurationException pce) {}
Document document = null;
document = db.parse(uri);
numberDisplayLines = 0;
display(document, "");
} catch (Exception e) {
e.printStackTrace(System.err);
}
return displayStrings;
}
public void display(Node node, String indent)
{
if (node == null) {
return;
}
int type = node.getNodeType();
switch (type) {
case Node.DOCUMENT_NODE: {
displayStrings[numberDisplayLines] = indent;
displayStrings[numberDisplayLines] += "<?xml version=\"1.0\" encoding=\""+
"UTF-8" + "\"?>";
numberDisplayLines++;
display(((Document)node).getDocumentElement(), "");
break;
}
case Node.ELEMENT_NODE: {
displayStrings[numberDisplayLines] = indent;
displayStrings[numberDisplayLines] += "<";
displayStrings[numberDisplayLines] += node.getNodeName();
int length = (node.getAttributes() != null) ? node.getAttributes().getLength() : 0;
Attr attributes[] = new Attr[length];
for (int i = 0; i < length; i++) {
attributes[i] = (Attr)node.getAttributes().item(i);
}
for (int i = 0; i < attributes.length; i++) {
Attr attribute = attributes[i];
displayStrings[numberDisplayLines] += " ";
displayStrings[numberDisplayLines] += attribute.getNodeName();
displayStrings[numberDisplayLines] += "=\"";
displayStrings[numberDisplayLines] += attribute.getNodeValue();
displayStrings[numberDisplayLines] += "\"";
}
displayStrings[numberDisplayLines] += ">";
numberDisplayLines++;
NodeList childNodes = node.getChildNodes();
if (childNodes != null) {
length = childNodes.getLength();
indent += " ";
for (int i = 0; i < length; i++ ) {
display(childNodes.item(i), indent);
}
}
break;
}
case Node.CDATA_SECTION_NODE: {
displayStrings[numberDisplayLines] = indent;
displayStrings[numberDisplayLines] += "<![CDATA[";
displayStrings[numberDisplayLines] += node.getNodeValue();
displayStrings[numberDisplayLines] += "]]>";
numberDisplayLines++;
break;
}
case Node.TEXT_NODE: {
displayStrings[numberDisplayLines] = indent;
String newText = node.getNodeValue().trim();
if(newText.indexOf("\n") < 0 && newText.length() > 0) {
displayStrings[numberDisplayLines] += newText;
numberDisplayLines++;
}
break;
}
case Node.PROCESSING_INSTRUCTION_NODE: {
displayStrings[numberDisplayLines] = indent;
displayStrings[numberDisplayLines] += "<?";
displayStrings[numberDisplayLines] += node.getNodeName();
String text = node.getNodeValue();
if (text != null && text.length() > 0) {
displayStrings[numberDisplayLines] += text;
}
displayStrings[numberDisplayLines] += "?>";
numberDisplayLines++;
break;
}
}
if (type == Node.ELEMENT_NODE) {
displayStrings[numberDisplayLines] = indent.substring(0, indent.length() - 24);
displayStrings[numberDisplayLines] += "</";
displayStrings[numberDisplayLines] += node.getNodeName();
displayStrings[numberDisplayLines] += ">";
numberDisplayLines++;
indent += " ";
}
}
}
%>
<HTML>
<HEAD>
<TITLE>Parsing an XML Document With DOM</TITLE>
</HEAD>
<BODY>
<h1>Parsing an XML Document With DOM</h1>
<% xparser p = new xparser();
String[] s = p.displayDocument(application.getRealPath("/") + "test.xml");
for(int i = 0; i < s.length; i++){
if(s[i] != null){
%>
<%= s[i] %><BR>
<%
}
}
%>
</BODY>
</HTML>
XML demo file
<a>
<b>
</b>
</a>
]]>