kxmldemo_dom.java

j2me手机制作

package com.talkweb.micp.icsp;

import javax.microedition.midlet.*;
import com.talkweb.micp.icsp.parse.*;
import java.io.*;
import org.kxml.parser.*;
import org.kxml.kdom.*;
import org.kxml.*;
import java.util.Vector;

/**
 * A simple app to demonstrate pull parsing using kXML.  It opens
 * a file from the resource directory /res then passes the InputStream
 * to a kXML parser.  The application will then ask the parser for the
 * next event.  If the start tag of an <address> element is
 * encountered then control is passed to the parseAddress function
 * which will begin retrieving data and continue doing so until
 * an end tag for </address> is encountered.
 *
 * This demonstrates how easy it is to use a pull parser by
 * fragmenting node parsing between functions.
 *
 * @author Robert Cadena
 */
public class kXMLDemo_dom
    extends javax.microedition.midlet.MIDlet {

    /**
     * Name of resource file we'll use later
     */
//	public static final String resfile_name = "/res/address_book.xml";

    public static final String resfile_name = "/res/222.smil";
    Vector vecSmilRelation = null ;
   int lableId = 0 ;


//        Image     image = Image.createImage("/res/icon.png");


    /**
     * Creates an XML parser and parses a file in the local store into a
     * DOM tree.  Then we traverse the DOM and print out its contents.
     */


    public void beginParse() {
        // Now we get the root element which is "address_book"
        Document doc = getXMLDocment();
        Element root = doc.getRootElement();


        vecSmilRelation = new Vector() ;
        int smilCount = 0 ;

        // Since the <address> tags are children of <address_book>
        // the we get the children of root and see which one is
        // called <address>.  We can't just say root.getElement("address")
        // because it will return an exception if more than one element
        // with that name exists
        //int child_count = root.getChildCount();
        getSmilElement(root.getElement("body"),smilCount,"lable0");

        System.out.println("vecSmilRelation parse start.........") ;

        for (int i=0 ; i<vecSmilRelation.size(); i++){
            SmilRelation sEle = (SmilRelation)vecSmilRelation.elementAt(i);
            System.out.println("id="+sEle.getId()+
                               "  lable="+sEle.getLable() +
                               "  parentId="+sEle.getParentId()+
                               "  regionId="+sEle.getRegionId()) ;
        }
    }

    public void getSmilElement(Element element,
                               int smilCount,String parentId){
        //Element root = doc.getRootElement();
        // Since the <address> tags are children of <address_book>
        // the we get the children of root and see which one is
        // called <address>.  We can't just say root.getElement("address")
        // because it will return an exception if more than one element
        // with that name exists
        int child_count = element.getChildCount();


        if (child_count <= 0) return;

        System.out.println("===="+element.getName()+"======");

        for (int j = 0; j < child_count; j++) {

           // System.out.println(j);
            // if it's not an element tag then skip it
            if (element.getType(j) != Xml.ELEMENT) {
                continue;
            }


            Element item = element.getElement(j);

            System.out.println(item.getName() + "+++" + "parent:" +
                               item.getParent().getName()+
                               "  This_hashCode:" + item.hashCode() +
                               "  parent_ID:" + String.valueOf(smilCount)+
                               "  Parent_hashCode:"+ String.valueOf(item.getParent().hashCode()));

            lableId += 1;

            SmilRelation smilRelation = new SmilRelation();
            smilRelation.setId(item.hashCode());
            smilRelation.setLable(item.getName());
            smilRelation.setParentId(item.getParentElement().hashCode());
            if (item.getChildCount() <= 0 ){
                //smilRelation.setRegionId(item.getAttribute(0).getValue());
                smilRelation.setRegionId(getAttribute(item));
            }else{
                smilRelation.setRegionId("");
            }

            vecSmilRelation.addElement(smilRelation);

            if (item.getChildCount() > 0) {
                smilCount += 1;

                getSmilElement(item,smilCount,parentId);

            }

            item = null;
        }


        System.out.println("===="+element.getName()+"**smilCount:"+smilCount+"======");


    }

    public String getAttribute(Element lableElement){
        Vector vecAttr = lableElement.getAttributes() ;

        for (int j=0 ; j<vecAttr.size(); j++){
            Attribute aEle = (Attribute) vecAttr.elementAt(j) ;
            if (aEle.getName().equals("region")){
                return aEle.getValue();
            }
        }
        return "" ;
    }

    public Document getXMLDocment(){
        XmlParser parser = null;
        Document doc = new Document();
        try {
            InputStream in = this.getClass().getResourceAsStream(resfile_name);
            InputStreamReader isr = new InputStreamReader(in);
            parser = new XmlParser(isr);

            doc.parse(parser);
            return doc ;
        }
        catch (IOException ioe) {
            System.err.println("XML Parsing Error: " + ioe);
            ioe.printStackTrace();

            return null;
        }
        finally{
            parser = null;
            doc = null;
        }

    }


    /**
     * Starts the parser
     *
     * @see javax.microedition.midlet.MIDlet#startApp()
     */
    protected void startApp() throws MIDletStateChangeException {
        beginParse();
    }

    /**
     * @see javax.microedition.midlet.MIDlet#destroyApp(boolean)
     */
    protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
    }

    /**
     * @see javax.microedition.midlet.MIDlet#pauseApp()
     */
    protected void pauseApp() {
    }

}