xmlutility.java

J2EE eclipse 下开发数据库一个插件

/*
 * Created on 2003-4-9
 *
 */
package com.tanghan.util;
//import java.io.FileOutputStream;
//import java.io.IOException;
//import java.io.OutputStreamWriter;

//import java.io.FileInputStream;
import java.io.InputStream;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
//import java.io.Writer;

import org.w3c.dom.*;
import org.xml.sax.InputSource;
//import javax.xml.parsers.*;
/**
 * @author Jerry Tang
 * @version 1.0
 * @copyright  (C) 2002 有色信息管理系统项目组
 */

public class XMLUtility {
    private static org.apache.xerces.parsers.DOMParser parser =
        new org.apache.xerces.parsers.DOMParser();
    private XMLUtility() {
    }
    public static void document2XML(Document document,String XMLFilePath) throws TanghanException{
    	try{
			DocumentBuilderFactory factory 
			 = DocumentBuilderFactory.newInstance();
			factory.setNamespaceAware(true);
			DocumentBuilder parser = factory.newDocumentBuilder();

			TransformerFactory xformFactory 
			 = TransformerFactory.newInstance();
			Transformer idTransform = xformFactory.newTransformer();
			Source input = new DOMSource(document);
			Result output = new StreamResult(XMLFilePath);
			idTransform.transform(input, output);    		
    	}catch(Exception err){
			throw new TanghanException(err);
		}
    }


    public static Document xml2Document(String XMLFilePath) throws TanghanException{
       try{
            parser.parse(XMLFilePath) ;
            Document document =parser.getDocument();
            return document;
        }catch(Exception err){
            throw new TanghanException(err);
        }
    }
	public static Document xml2Document(InputStream inputStream) throws TanghanException{
	   try{
			InputSource inputSource = new InputSource(inputStream);
			parser.parse(inputSource) ;
			Document document =parser.getDocument();
			return document;
		}catch(Exception err){
			throw new TanghanException(err);
		}
	}
    
	public static String getNodeAttr(Element pElement,String pElementName,String pAttrName){
		NodeList nodelist=pElement.getElementsByTagName(pElementName) ;
		Node node=nodelist.item(0) ;
		NamedNodeMap attrs=node.getAttributes() ;
		Node attrNode=attrs.getNamedItem(pAttrName) ;
		return attrNode.getNodeValue();
	}

	public static String getNodeAttr(Element pElement,String pElementName,String pAttrName,int index){
		NodeList nodelist=pElement.getElementsByTagName(pElementName) ;
		Node node=nodelist.item(index) ;
		NamedNodeMap attrs=node.getAttributes() ;
		Node attrNode=attrs.getNamedItem(pAttrName) ;
		return attrNode.getNodeValue();
	}
}