//get the file name from the 'file' parameter
String fileName = request.getParameter("file");
if (fileName == null || fileName.equals(""))
throw new ServletException("Invalid or non-existent file parameter in SendPdf component.");
if (fileName.indexOf(".pdf") == -1)
fileName = fileName + ".pdf";
ServletOutputStream stream = null;
BufferedInputStream buf = null;
HttpServletResponse httpResp = null;
try{
httpResp = (HttpServletResponse) response;
stream = httpResp.getOutputStream();
File pdf = new File(PDF_DIR + "/" + fileName);
//set response headers
httpResp.setContentType(PDF_CONTENT_TYPE);
httpResp.addHeader("Content-Disposition","attachment; filename="+fileName );
httpResp.setContentLength( (int) pdf.length() );
FileInputStream input = new FileInputStream(pdf);
buf = new BufferedInputStream(input);
int readBytes = 0;
//read from the file; write to the ServletOutputStream
while((readBytes = buf.read()) != -1)
stream.write(readBytes);
} catch (Exception ioe){
// throw new ServletException(ioe.getMessage());
System.out.println(ioe.getMessage());
} finally {
if (buf != null)
buf.close();
if (stream != null){
stream.flush();
//stream.close();
}
}//end finally
chain.doFilter(request,httpResp);
