readwriteunitexml.java

一套完整的档案管理系统

//package com.stsc.archive.xml;
package com.stsc.archive.backup;

/*
  读写与数据库fArchive表对应的xml文件
*/

import java.io.*; //Java基础包，包含各种IO操作
import java.util.*; //Java基础包，包含各种标准数据结构操作
import javax.xml.parsers.*; //XML解析器接口
import org.w3c.dom.*; //XML的DOM实现
import org.apache.crimson.tree.XmlDocument;//写XML文件要用到
import javax.xml.transform.*;
import javax.xml.transform.stream.*;
import javax.xml.transform.dom.*;

import com.stsc.archive.backup.CopyFile;


public class ReadWriteUniteXML
{
	public boolean writeXMLFile(String outFile, VolumnAndArchiveVector myvector) throws Exception 
	{
		if( (outFile == null) || (myvector == null) || (myvector.getLength() < 1) )
			return false;
			
		if(CopyFile.createDir(outFile) == false)	//建立目录；
		{
			return false;
		}
			
	    //为解析XML作准备，创建DocumentBuilderFactory实例,指定DocumentBuilder
	    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
	    DocumentBuilder db = null;
	    try 
	    {
	        db = dbf.newDocumentBuilder();
	    } 
	    catch (ParserConfigurationException pce) 
	    {
	        System.out.println(pce);
	        return false;
	    } 
	    Document doc = null;
	    doc = db.newDocument();

		//--------特殊处理----------------------------------------
	    //下面是建立XML文档内容的过程，先建立根元素
	    Element root = doc.createElement("备份信息--案卷表关联文件表");
	    //根元素添加上文档
	    doc.appendChild(root); 
	    
	    for (int i = 0; i < myvector.getLength(); i++) 
	    {
			Element one = doc.createElement("案卷文件表");
			root.appendChild(one);

			//--------一个案卷号-------------------------------------------------------------
			//----案卷表－－－－－－－－－－－－－－－－－－－－－－－
	       ElementToDoc.addVolumnElement(doc, one, myvector.get(i));
		   //＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝

		   //－－－文件表－－－－－－－－－－－－－－－－－－－－－－－－－－－－－
		   fArchiveVector arVector = myvector.get(i).getArchiveVector();
		   if( (arVector != null) && (arVector.getLength() > 0) )
			{
				ElementToDoc.addArchiveElement(doc, one, arVector, outFile);
			}
		   //＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
		   //=======================================================================================
	   }
	   //=============================================================
	   

	   DOMSource doms = new DOMSource (doc);	
		//Input. Document is an extended class of Node, and therefore 
		//can be used here.	
		File f = new File (outFile);
		StreamResult sr = new StreamResult (f);
		// Output.
		try 
		{	
			TransformerFactory tf=TransformerFactory.newInstance();	
			// Get a TransformerFactory.
			Transformer t=tf.newTransformer ();	
			// Make a new Transformer from it	
			Properties properties = t.getOutputProperties();   
			properties.setProperty(OutputKeys.ENCODING,"GB2312"); 
			properties.setProperty(OutputKeys.METHOD,"xml");
			properties.setProperty(OutputKeys.VERSION,"1.0");
			properties.setProperty(OutputKeys.INDENT,"yes");
			t.setOutputProperties(properties);   
			// now proceed with the transformation   
			t.transform(doms,sr);	
			// Use the DOMSource as input. StreamResult as output path.		
		}
		catch (TransformerConfigurationException tce)
		{			
			System.out.println("Transformer Configuration Exception\n-----");
			tce.printStackTrace();	
			return false;	
		}
		catch (TransformerException te) 
		{			
			System.out.println ("Transformer Exception\n---------");			
			te.printStackTrace ();	
			return false;	
		}	
		
		return true;
	}
	
	public VolumnAndArchiveVector readXMLFile(String inFile) throws Exception 
	{
		if(inFile == null)
			return null;
		
		System.out.println("readxmlfile begin========");
	   	//为解析XML作准备，创建DocumentBuilderFactory实例,指定DocumentBuilder
	    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
	    DocumentBuilder db = null;
	    try 
	    {
	        db = dbf.newDocumentBuilder();
	    } catch (ParserConfigurationException pce) 
	    {
	        System.out.println(pce); //出异常时输出异常信息，然后退出，下同
	        return null;
	    } 
	    Document doc = null;
	    try 
	    {
	        doc = db.parse(inFile);
	    } catch (DOMException dom) 
	    {
	        System.out.println(dom.getMessage());
	        return null;
	    } catch (IOException ioe) 
	    {
	        System.out.println(ioe);
	        return null;
	    }
	    
	   //下面是解析XML的全过程，比较简单，先取根元素”用户列表“
	   Element root = doc.getDocumentElement();
	   
	   return ElementToDoc.readUnite(root);
	}
}