In a one page a have a link to download a file like \myapp\controller\file?id=45
In controller have
InputStream stream = null;
byte [] buffer =someService.getFile(somedata);
stream = new ByteArrayInputStream(buffer);
System.out.println("get file---");
response.addHeader("Content-Disposition","attachment; filename=report.pdf");
try {
IOUtils.copy(stream, response.getOutputStream());
System.out.println("get file---OK");
} catch (Exception e) {
e.printStackTrace();
}
This work well, but in another page
$.ajax({
type: 'POST',
url: '${url}',
data: {sdate: $('#date').val() },
success: function (data) {
alert(data)
},
error:function (xhr, ajaxOptions, thrownError) {
console.log("in error");
}
});
In console ever say
get file---
get file---OK
but the browser does nothing.
I add in succes alert(data) to debug, it shows the binary content of PDF file like:
%PDF-1.4 %���� 3 0 obj <>stream x�͝O�$�q���)ޑ:��U]���E�d�A��1^h��ǃ\nS��#��������?���X+��RI��J����Y�r��F�?
Now, how explorer understand is a file to download?
For lack of permits, i can not save files server side
