使用DOMParser 解析xml，domparser解析xml,DOMExample.j

使用DOMParser 解析xml，domparser解析xml,DOMExample.j

DOMExample.java

import java.io.*;import java.net.*;import org.w3c.dom.*;import org.w3c.dom.Node.*;import oracle.xml.parser.v2.*;/** * ----------------------------------------------------------------------------- * Demonstrate how to use DOM. * * @version 1.0 * @author  Jeffrey M. Hunter  (jhunter@idevelopment.info) * @author  http://www.idevelopment.info * ----------------------------------------------------------------------------- */public class DOMExample {    /*     * +---------------------------------------------+     * | METHOD: main                                |     * +---------------------------------------------+     */    static public void main(String[] argv) {        try {            if (argv.length != 1) {                // must pass in the name of the XML file                System.err.println("Usage: java DOMExample filename");                System.exit(1);            }            // Get an instance of the parser            DOMParser parser = new DOMParser();            // Generate a URL from the filename            URL url = createURL(argv[0]);            // Set various parser options; validation on,            // warnings shown, error stream set to stderr.            parser.setErrorStream(System.err);            parser.setValidationMode(true);            parser.showWarnings(true);            // parse the document            parser.parse(url);            // Obtain the document            XMLDocument doc = parser.getDocument();            // print document elements            System.out.print("The elements are: ");            printElements(doc);            // print document elements attributes            System.out.println("The attributes of each element are: ");            printElementAttributes(doc);        } catch (Exception e) {            System.out.println(e.toString());        }    }    /*     * +---------------------------------------------+     * | METHOD: printElements                       |     * +---------------------------------------------+     */    static void printElements(Document doc) {        NodeList nodelist = doc.getElementsByTagName("*");        Node     node;        for (int i=0; i<nodelist.getLength(); i++) {            node = nodelist.item(i);            System.out.print(node.getNodeName() + " ");        }        System.out.println();    }    /*     * +---------------------------------------------+     * | METHOD: printElementAttributes              |     * +---------------------------------------------+     */    static void printElementAttributes(Document doc) {        NodeList      nodelist = doc.getElementsByTagName("*");        Node          node;        Element       element;        NamedNodeMap  nnm = null;        String attrname;        String attrval;        int    i, len;        len = nodelist.getLength();        for (int j=0; j < len; j++) {            element = (Element)nodelist.item(j);            System.out.println(element.getTagName() + ":");            nnm = element.getAttributes();        }        if (nnm != null) {            for (i=0; i<nnm.getLength(); i++) {                node = nnm.item(i);                attrname = node.getNodeName();                attrval  = node.getNodeValue();                System.out.println(" " + attrname + " = " + attrval);            }        }        System.out.println();    }    /*     * +---------------------------------------------+     * | METHOD: createURL                           |     * +---------------------------------------------+     */    static URL createURL(String filename) {        URL url = null;        try {            url = new URL(filename);        } catch (MalformedURLException ex) {            try {                File f = new File(filename);                url = f.toURL();            } catch (MalformedURLException e) {                System.out.println("Cannot create URL for: " + filename);                System.exit(0);            }        }        return url;    }}