Problem saving attachment via jsp

Question

Hi,
I try to save an attachment via jsp, but the attachment has wrong size(2 bytes more). Here is my code:
     Part part = multipart.getBodyPart(partIndex);
    ContentType ct = new ContentType(part.getContentType());
    response.setContentType(ct.getBaseType());     
     response.setHeader("Content-Disposition", "attachment;filename=\""+part.getFileName()+"\"");     
     response.addHeader("Pragma", "public");
     response.addHeader("Cache-Control", "max-age=0");
     InputStream is = part.getInputStream();
     int i;
     while ((i = is.read()) != -1)
       out.write(i);
     out.flush();
     out.close();is it something wrong with the header?
any idea?
thx.

Answer 1

You are right.
If I use input stream from a file I have the same problem:
<%@ page import="java.io.*" %>
<%
try{
     FileInputStream is = new FileInputStream("c:/x.jpg");
     response.setHeader("Content-Disposition", "attachment;filename=\"x.jpg\"");     
     response.setHeader("Cache-Control", "no-cache");
     response.setHeader("Pragma", "no-cache");
     int i;
     while ((i = is.read()) != -1) { out.write(i); }
     out.flush();
     out.close();
     is.close();
catch(Exception e) { }      
%>strange. do I need a special directive ?