If your document is text, you can do what I did--return the text in
the addSubmitCompleteHandler:
form.addSubmitCompleteHandler(new FormPanel.SubmitCompleteHandler() {
public void onSubmitComplete(FormPanel.SubmitCompleteEvent
event) {
// This event is fired when the form submission is
successfully
completed.
String result = event.getResults();
GWT.log(result.substring(0, 40), null);
parseDocument(result);
}
});
I return the entire file, but you could strip out what you need and go
from there.
NOTE: Because of IE you must, *must*, **MUST** set the content type
to text/html or IE will wrap it in all sorts of garbage.
In my upload servlet (using the Apache Commons FileUpload).
@SuppressWarnings("unchecked")
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException,
IOException
{
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
// Create a factory for disk-based file items
DiskFileItemFactory factory = new DiskFileItemFactory();
// Create a new file upload handler
ServletFileUpload upload = new ServletFileUpload(factory);
// Parse the request, and temporarily store file.
try {
List<FileItem> items = upload.parseRequest(request);
Iterator<FileItem> iter = items.iterator();
while (iter.hasNext()) {
FileItem item = (FileItem) iter.next();
if (item.isFormField()) {
//String name = item.getFieldName();
}
else {
// If no item name, no file has been selected.
if ( item.getName().length() > 0 &&
item.getSize() > 0 ) {
byte [] data = item.get();
String xml = new String(data);
out.write(xml);
}
}
} // end WHILE
} catch (FileUploadException e) {
e.printStackTrace();
out.println(e.getMessage());
return;
}
}
On Aug 11, 5:22 pm, Greg Dougherty <dougherty.greg...@mayo.edu> wrote:
> My users want my app to be able to read data from a local file. So
> far as I can tell, the only way to do this is to have a FileUpload
> Widget in a form, send the contents of the file to the server, and
> then get the contents from the server (i.e. send the form with a
> unique ID attached, then make an RPC call asking for the contents of
> the file with that unique ID).
>
> Is there another way to do this? Does there exist sample code on how
> to do this?
>
> TIA,
>
> Greg
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