xmlparser.java

哈工大的CERP系统

/*
 * $Id: XMLParser.java,v 1.1.1.1 2002/02/02 05:20:16 Administrator Exp $
 * Copyright 2001 Sun Microsystems, Inc. All rights reserved.
 * Copyright 2001 Sun Microsystems, Inc. Tous droits r閟erv閟.
 */

package com.huiton.cerp.pub.util;

import org.xml.sax.InputSource;
import org.w3c.dom.Element;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.w3c.dom.Node;

import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import org.xml.sax.SAXException;

// jaxp 1.0.1 imports
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.DocumentBuilder;

import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import com.huiton.mainframe.util.tracer.Debug;

public class XMLParser {
    // constants
    protected static Element loadDocument(String location) {
        Document doc = null;
        try {
            URL url = new URL(location);
            InputSource xmlInp = new InputSource(url.openStream());

            DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
            DocumentBuilder parser = docBuilderFactory.newDocumentBuilder();
            doc = parser.parse(xmlInp);
            Element root = doc.getDocumentElement();
            //root.normalize();
            return root;
        } catch (SAXParseException err) {
            Debug.println ("XMLParser ** Parsing error" + ", line " +
                        err.getLineNumber () + ", uri " + err.getSystemId ());
            Debug.println("XMLParser error: " + err.getMessage ());
        } catch (SAXException e) {
            Debug.println("XMLParser error: " + e);
        } catch (java.net.MalformedURLException mfx) {
            Debug.println("XMLParser error: " + mfx);
        } catch (java.io.IOException e) {
            Debug.println("XMLParser error: " + e);
        } catch (Exception pce) {
            Debug.println("XMLParser error: " + pce);
        }
        return null;
    }

    private static String getSubTagAttribute(Element root, String tagName, String subTagName, String attribute) {
        String returnString = "";
        NodeList list = root.getElementsByTagName(tagName);
        for (int loop = 0; loop < list.getLength(); loop++) {
            Node node = list.item(loop);
            if (node != null) {
                NodeList  children = node.getChildNodes();
                for (int innerLoop =0; innerLoop < children.getLength(); innerLoop++) {
                    Node  child = children.item(innerLoop);
                    if ((child != null) && (child.getNodeName() != null) && child.getNodeName().equals(subTagName) ) {
                        if (child instanceof Element) {
                            return ((Element)child).getAttribute(attribute);
                        }
                    }
                } // end inner loop
            }
        }
        return returnString;
    }

    protected static String getSubTagValue(Node node, String subTagName) {
        String returnString = "";
        if (node != null) {
            NodeList  children = node.getChildNodes();
            for (int innerLoop =0; innerLoop < children.getLength(); innerLoop++) {
                Node  child = children.item(innerLoop);
                if ((child != null) && (child.getNodeName() != null) && child.getNodeName().equals(subTagName) ) {
                    Node grandChild = child.getFirstChild();
                    if (grandChild.getNodeValue() != null) return grandChild.getNodeValue();
                }
            } // end inner loop
        }
        return returnString;
    }

    protected static String getSubTagValue(Element root, String tagName, String subTagName) {
        String returnString = "";
        NodeList list = root.getElementsByTagName(tagName);
        for (int loop = 0; loop < list.getLength(); loop++) {
            Node node = list.item(loop);
            if (node != null) {
                NodeList  children = node.getChildNodes();
                for (int innerLoop =0; innerLoop < children.getLength(); innerLoop++) {
                    Node  child = children.item(innerLoop);
                    if ((child != null) && (child.getNodeName() != null) && child.getNodeName().equals(subTagName) ) {
                        Node grandChild = child.getFirstChild();
                        if (grandChild.getNodeValue() != null) return grandChild.getNodeValue();
                    }
                } // end inner loop
            }
        }
        return returnString;
    }

    protected static String getTagValue(Element root, String tagName) {
        String returnString = "";
        System.out.println("-----tagName: " + tagName);
        NodeList list = root.getElementsByTagName(tagName);
        for (int loop = 0; loop < list.getLength(); loop++) {
            Node node = list.item(loop);
            if (node != null) {
                Node child = node.getFirstChild();
                if ((child != null) && child.getNodeValue() != null)  {
                    System.out.println("-----returnString: " + child.getNodeValue());
                    return child.getNodeValue();
                }
            }
        }

        return returnString;
    }
}