Upload Directory Configuration Problem in jdev 10.1.3.2 adfbc

Question

I am configuring a file upload utiltity. By default my files are created in /tmp directory i.e on c:\tmp folder. I intend to change this behaviour as i want this to be uplaoded into a drive other than c:\
When we define the upload directory i have specified d:\amitupload\ files are uplaoded properly. But the problem is downloading the same. Its giving me nullpointer exception.
What am i doing wrong. I followed the SRDemo Steps for file upload/download
regards
Amit

Answer 1

Frank can we have UPLOAD_DIR defined as d:\uploaddir for windows or /app/uploads for linux operating system
I am doing this way this method is called on download button action.
My problem i could resolve the issue as my uploaddoc method was executed on value change listener attached on the input file component. So when i clicked on download this uploaddoc method is fired which cannot find the file in the input file component so the error message as null pointer exception.
I shifted the code to upload button action now its working fine.
thanx
public String onDownload() {
FacesContext fctx = FacesContext.getCurrentInstance();
ValueBinding vb = fctx.getApplication().createValueBinding("#{row.AddudFilePath}");
Object documentName = vb.getValue(fctx);
if(documentName !=null){
File srcdoc = new File((String)documentName);
if (srcdoc.exists()) {
FileInputStream fis;
byte[] b;
HttpServletResponse response = (HttpServletResponse) fctx.getExternalContext().getResponse();
// file should be downloaded without display
response.setContentType("application/x-download");
response.setHeader("Content-Disposition", "attachment; filename="+srcdoc.getName());
response.setContentLength((new Long(srcdoc.length())).intValue());
OutputStream out;
try {
out = response.getOutputStream();
} catch (IOException e) {
// TODO
e.printStackTrace();
// no error message shown to the user. Consider adding a Faces
// Message
return null;
try {
fis = new FileInputStream(srcdoc);
System.out.println(fis);
int n;
while ((n = fis.available())> 0) {
b = new byte[n];
int result = fis.read(b);
out.write(b, 0, b.length);
if (result == -1) break;
catch (IOException e)
e.printStackTrace();
return null;
try {
out.flush();
out.close();
} catch (IOException e) {
// TODO
fctx.responseComplete();
return null;
}