Problem delivering XLS File

Question

Hi
In my application, i have a module that has to deliver a XLS file, that was previously uploaded.
This is the code i am using for it:
BufferedInputStream bis = null;
BufferedOutputStream bos = null;
try {
String filePath = "thePhisicalPathToTheXLSFile.xls"
response.setHeader("Expires", "0");
response.setHeader("Cache-Control", "must-revalidate, post-check=0, pre-check=0");
response.setHeader("Pragma", "public");
response.setContentType("application/vnd.ms-excel");
outputStream = response.getOutputStream();
FileInputStream fis = new FileInputStream(filePath);
bis = new BufferedInputStream(fis);
bos = new BufferedOutputStream(outputStream);
byte[] buff = new byte[2048];
int bytesRead;
// Simple read/write loop.
while(-1 != (bytesRead = bis.read(buff, 0, buff.length))) {
bos.write(buff, 0, bytesRead);
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (outputStream != null);
outputStream.close();
if (bis != null)
bis.close();
if (bos != null)
bos.close();
} catch (Exception e) {
//ignore
The file is delivered, but something happens in the process that makes the file unable to be read; excel always shows me a warning that the file is damaged and cannot be read
What can be happening ???
Thanks

Answer 1

is the downloaded file size the same as the original? have you tried opening the downloaded file with a text editor?