| Java XML教程(一)__教程 |
|
| 日期：2007-5-20 1:28:04 人气：234 [大 中 小] |
|
|
|
|
|
/*
* (C) Copyright IBM Corp. 1999 All rights reserved.
*
* US Government Users Restricted Rights Use, duplication or
* disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
*
* The program is provided "as is" without any warranty express or
* implied, including the warranty of non-infringement and the implied
* warranties of merchantibility and fitness for a particular purpose.
* IBM will not be liable for any damages suffered by you as a result
* of using the Program. In no event will IBM be liable for any
* special, indirect or consequential damages or lost profits even if
* IBM has been advised of the possibility of their occurrence. IBM
* will not be liable for any third party claims against you.
*/
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import com.ibm.xml.parsers.DOMParser;
/**
* domCounter.java
* This code creates a DOM parser, parses a document, then
* prints statistics about the number and type of nodes
* found in the document.
*/
public class domCounter
{
int documentNodes = 0;
int elementNodes = 0;
int entityReferenceNodes = 0;
int cdataSections = 0;
int textNodes = 0;
int processingInstructions = 0;
public void parseAndCount(String uri)
{
Document doc = null;
try
{
DOMParser parser = new DOMParser();
parser.parse(uri);
doc = parser.getDocument();
}
catch (Exception e)
{
System.err.println("Sorry, an error occurred: " + e);
}
// We`ve parsed the document now, so let`s scan the DOM tree and
// print the statistics.
if (doc != null)
{
scanDOMTree(doc);
System.out.println("Document Statistics for " + uri + ":");
System.out.println("====================================");
System.out.println("Document Nodes: " + documentNodes);
System.out.println("Element Nodes: " + elementNodes);
System.out.println("Entity Reference Nodes: " + entityReferenceNodes);
System.out.println("CDATA Sections: " + cdataSections);
System.out.println("Text Nodes: " + textNodes);
System.out.println("Processing Instructions: " + processingInstructions);
System.out.println(" ----------");
int totalNodes = documentNodes + elementNodes + entityReferenceNodes +
cdataSections + textNodes + processingInstructions;
System.out.println("Total: " + totalNodes + " Nodes");
}
}
/** Scans the DOM tree and counts the different types of nodes. */
public void scanDOMTree(Node node)
{
int type = node.getNodeType();
switch (type)
{
case Node.DOCUMENT_NODE:
documentNodes++;
scanDOMTree(((Document)node).getDocumentElement());
break;
|
|
|
| 出处：本站原创 作者：佚名 |
|
|
