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[FW:] Writing big files to ServletOutputStream

[FW:] Writing big files to ServletOutputStream

[FW:] Writing big files to ServletOutputStream
发布时间:2006-03-10 00:32        来源:        作者:

Problem when writing big files to ServletOutputStream

I am using the following code to write files to servlet output stream. The problem is the browser is not downloading the entire file when the file size grows above 10 MB. Any help would be greatly helpful.

FileInputStream fis = new FileInputStream(new File(fileName));
response.setHeader("Content-Disposition:", "attachment;filename=" + fileName );
BufferedInputStream bis= new BufferedInputStream(fis);
ServletOutputStream sos = response.getOutputStream();
byte[] buffer = new byte[5000];
response.setHeader("Content-Length:", String.valueOf (bis.available()));
while (true) {
   int bytesRead = bis.read(buffer, 0, buffer.length);
   if (bytesRead < 0)
   break;
   sos.write(buffer, 0, bytesRead);
}
fis.close();
sos.flush();
sos.close();

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Problem when writing big files to ServletOutputStream

Posted By: Krishnan Muthusubramanian on October 06, 2004 @ 11:45 AM in response to Message #141542 0 replies in this thread
response.setHeader("Content-Length:", String.valueOf (bis.available()));
The 'available' method of InputStream does not return the number of bytes that avilable :). Check the Java Doc for this method.

Try new File(fileName).length() instead
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