Help whit open file!!!!!Urgent

Question

hi
i have 1 great problen whit my servlet.
I use Fop class for create pdf file from xml and class work very well, but i need translate this class in a servlet class and when open file on the fly in browser size of this is equals a 0kb why?
this is may code:
//Java
import java.io.File;
import java.io.OutputStream;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.*;
//JAXP
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.Source;
import javax.xml.transform.Result;
import javax.xml.transform.stream.StreamSource;
import javax.xml.transform.sax.SAXResult;
//FOP
import org.apache.fop.apps.FOUserAgent;
import org.apache.fop.apps.Fop;
import org.apache.fop.apps.FopFactory;
import org.apache.fop.apps.MimeConstants;
//passaggio di parametri(da xml a pdf)
public class generatePDF extends javax.servlet.http.HttpServlet
public void doGet(HttpServletRequest req,HttpServletResponse response) throws ServletException,IOException
     try {
     File baseDir = new File("xml/");
     baseDir.mkdirs();
File xmlfile = new File(baseDir, "mail.xml");//file in entrata(stream xml)     
File xsltfile = new File(baseDir, "carrello.xsl");//file di decodifica xsl
File pdffile = new File("Testpdf.pdf");//file temporaneo d'appoggio pdf
FopFactory fopFactory = FopFactory.newInstance();
     FOUserAgent foUserAgent = fopFactory.newFOUserAgent();
OutputStream outi = new java.io.FileOutputStream(pdffile);
outi = new java.io.BufferedOutputStream(outi);
try {
Fop fop = fopFactory.newFop(MimeConstants.MIME_PDF, foUserAgent, outi);
TransformerFactory factory = TransformerFactory.newInstance();
Transformer transformer = factory.newTransformer(new StreamSource(xsltfile));
transformer.setParameter("versionParam", "2.0");
Source src = new StreamSource(xmlfile);
          Result res = new SAXResult(fop.getDefaultHandler());
transformer.transform(src, res);
} finally {
          response.setContentType("application/pdf");
          response.setHeader("Content-disposition","attachment; filename="+pdffile.getName());
          response.flushBuffer();
          outi.close();
          pdffile.delete();
} catch (Exception e) {
e.printStackTrace(System.err);
System.exit(-1);
please help my for adjust my code, where is the errors?
i use tomcat 5.5

Answer 1

Likely because you are not setting the content length. The rest of the code doesn't look fine however.
At the bottom of this article you can find a valuable downloadFile() snippet which might give new insights: http://balusc.xs4all.nl/srv/dev-jep-pdf.html
By the way, please use normal topic titles. You don't need to put pressure. We don't care less if it is urgent or not. That is totally your own problem.