detailpagetransformbean.java

java数据库编程源码

package JavaDatabaseBible.ch15;

import java.io.*;
import org.xml.sax.SAXException;
import org.apache.xalan.xslt.XSLTProcessorFactory;
import org.apache.xalan.xslt.XSLTInputSource;
import org.apache.xalan.xslt.XSLTResultTarget;
import org.apache.xalan.xslt.XSLTProcessor;

public class DetailPageTransformBean{
  private String xslFileName = null;
  private byte[] xmlSource = null;
  private ByteArrayInputStream xmlInputStream = null;
  
  public DetailPageTransformBean(){
  }
  
  public void setXmlSource(byte[] xmlSource){
    this.xmlSource=xmlSource;
    xmlInputStream = new ByteArrayInputStream(xmlSource);
  }
  
  public void setXslFileName(String xslFileName){
    this.xslFileName=xslFileName;
    File f = new File(xslFileName);
    if(!f.exists())System.out.println("Cannot find file: "+xslFileName);
  }
	
	public byte[] applyTransform(byte[] xmlSource){
	  setXmlSource(xmlSource);
	  return applyTransform();
	}
	
	public byte[] applyTransform(){
    ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    
    try{
      XSLTProcessor processor = XSLTProcessorFactory.getProcessor();

      processor.process(new XSLTInputSource(xmlInputStream),
                        new XSLTInputSource(xslFileName),
                        new XSLTResultTarget(outputStream));
    }catch(Exception e){
      System.err.println(e);
    }
    return outputStream.toByteArray(); 
	}
  
  public static void main(String args[]){
    File f = new File("EditDetail.html");
    int id = 1000;
    DetailPageXMLBean xmlBean = new DetailPageXMLBean();
    DetailPageTransformBean transformBean = new DetailPageTransformBean();
    xmlBean.setId(id);
    //transformBean.setXslFileName("DetailPage.xsl");
    transformBean.setXslFileName("EditDetail.xsl");
    //xmlBean.getDetailData();
    try {
      FileOutputStream fos = new FileOutputStream(f);
      fos.write(transformBean.applyTransform(xmlBean.getVehicleData()));
    }catch(Exception e){
      e.printStackTrace();
    }
  }
}