The dialog box open twice when open file from the server

Question

I use the following code to download/open file from the server:
<%
String filename = "MengxianhuiDocTest.doc";
String filepath = "D:\\";
response.setContentType("APPLICATION/OCTET-STREAM");
response.setHeader("Content-Disposition",
??attachment; filename=\"" + filename + "\"");
java.io.FileInputStream fileInputStream =
new java.io.FileInputStream(filepath + filename);
int i;
while ((i=fileInputStream.read()) != -1) {
out.write(i);
fileInputStream.close();
out.close();
%>
If the application runs, the Open or Save dialog box display.When I select open the file,
the dialog box will display twice.
Pls help me.
Thanks.

Answer 1

thx
but I tried it and it did't work.
The dialog box also display twice.