Multiple download with servlet

Question

Hi! I have a web app in struts where users can upload and download files from it. Now, the upload part is finished. My problem is the download part. I want it to be able to handle multiple downloads. The browser(client) sends a list of fileIDs to the server. The server looks for the files in its local directory, reads them, and streams them to the outputstream of HttpServletResponse (to the client). But only the first file ever gets sent. Here's part of my code:
files is a String[] which contains the list of fileIDs the user wants to download
FileDetails is a class I made which merely holds a File object, and its size
try {                                           
     DataOutputStream dos = new DataOutputStream( response.getOutputStream() );
     for( int i = 0; i < files.length; i++ ) {
          response.setHeader("Content-disposition",
                           "attachment; filename" +
                           files[i] );
          //get file
          FileDetails fd = fileManager.getFile( Integer.parseInt(files) );          
          response.setContentType( "application/Octet-stream" );
          //read file
          DataInputStream dis = new DataInputStream( new FileInputStream(fd.getFile()) );
          byte[] contents = new byte[ fd.getSize() ];     
          dis.read( contents, 0, fd.getSize() );
          dos.write( contents, 0, fd.getSize() );
          dos.flush();                                                                                                                                                           
} catch( Exception e ) {
     System.out.println( e );
How do I make it send multiple files to the user? Also, response.setHeader doesn't seem to set the default filename. For example, if I download pics.jpeg, I get a dialog box with mywebpage.do(i'm using struts) as the default filename.
Your help would be greatly appreciated! =)

Answer 1

you could try a refresh to see if it works
when user first access servlet, get all files and store them
in a session.
then send the first file normally and set the browser to refresh
at a certain time.
when the browser calls the servlet again, send the next
file, repeat until all files have been sent.