multipart requests have to be sent via a FORM panel
On Thu, Oct 22, 2009 at 6:53 PM, Lazo Apostolovski <[email protected]>wrote:
>
> Its probably a multipart message :S
>
> Try googling for how to accept multipart message on the server side
>
> here is some example but i don't know if you find usefull.
>
> public HashMap<String, InputStream> parseMultipartMessage(
> HttpServletRequest request) {
>
> mapWithStreams = new HashMap<String, InputStream>();
>
> boolean isMultipart = ServletFileUpload.isMultipartContent(request);
> try {
> if (isMultipart) {
> FileItemFactory factory = new DiskFileItemFactory();
> ServletFileUpload upload = new ServletFileUpload(factory);
>
> List<FileItem> items = upload.parseRequest(request);
>
> for (FileItem item : items) {
> mapWithStreams.put(item.getFieldName(), item.getInputStream());
> }
> } else {
> mapWithStreams.put(DEFAULT_KEY, request.getInputStream());
> }
> } catch (FileUploadException e) {
> e.printStackTrace();
> } catch (IOException e) {
> e.printStackTrace();
> }
> return mapWithStreams;
>
> In normal message (not multipart) data from the text fields come like
> the body of the message. If you try to transfer file in normal message
> then Stream is send like the body of the message. So you can transver
> only Parameters or only stream. If you want to transfer parameters and
> stream in same message you need to use multipart message. In multipart
> message InputStream come on server like a body of the message. If that
> input stream contain multipart message you need to parse that message.
> So in one part you will have values from input fields and in other part
> you will have Stream for uploaded file. Read about multipart messages on
> the wiki site. Code abowe will parse all input streams from multipart
> message and place them to the HasMap. The Key in HashMap is the File
> name. You can access to streams later when you need them. To the
> parameters you can access on the same way like you deed before:
>
> request.getParameter("parameterName");
>
> Good luck.
>
> YoeZ wrote:
> > Hey abhiram,
> >
> > I still have a problem in server side,, can you tell me how to catch
> > variable from client.
> >
> > Let say I have a textbox in client.
> >
> > Textbox txtComment = new Textbox;
> > txtComment.setName("txtComment");
> > txtComment .setText("hello");
> >
> > in server side:
> > I've tried:
> > String varXXX = (String) request.getParameter("txtComment");
> >
> > but that's not working. :(
> >
> > and I've also tried like this :
> >
> > try {
> > List items = upload.parseRequest(request);
> > Iterator it = items.iterator();
> > while (it.hasNext()) {
> > FileItem item = (FileItem) it.next();
> > if (item.isFormField()) {
> > String name = item.getFieldName();
> > if (name.equals("txtComment")) {
> > ret = item.getString();
> > }
> > return ret;
> > }
> > }
> > } catch (FileUploadException e) {
> > return null;
> > }
> >
> > but still null return.
> >
> > can you tell me how to catch it.
> >
> > regards
> >
> >
> >
> >
> > On Oct 21, 12:32 am, abhiram wuntakal <[email protected]> wrote:
> >
> >> Hey Yoez,
> >>
> >> Not sure if it helps. But i have a workaround solution for this. Make
> it a
> >> two-step process. First use a RemoteServiceServlet to pass across your
> >> variables to the server side and then save these values into some
> variables
> >> on the server side.
> >>
> >> Then you can use a HTTPServlet to pass across your file contents to the
> >> server side. Now you have the file as well as the variables.
> >>
> >> HTH,
> >> Cheers,
> >> Abhiram
> >>
> >>
> >>
> >> On Mon, Oct 19, 2009 at 6:12 PM, YoeZ <[email protected]> wrote:
> >>
> >>
> >>> thanks ian,, but i'm using GWT and tried to uploadfile which is must
> >>> using FormPanel.
> >>> I have successfully upload my file to server with UploadFile widget,
> >>> but I have another textboxes too. and dunno how to catch inside
> >>> FormPanel.
> >>>
> >>> On Oct 19, 7:15 pm, Ian Bambury <[email protected]> wrote:
> >>>
> >>>> You'll stand more chance of an answer if you ask that question in a
> Java
> >>>> forum. This is a GWT group.
> >>>> Ian
> >>>>
> >>>> http://examples.roughian.com
> >>>>
> >>>> 2009/10/19 YoeZ <[email protected]>
> >>>>
> >>>>> hello... please help
> >>>>>
> >>>>> On Oct 18, 12:31 am, YoeZ <[email protected]> wrote:
> >>>>>
> >>>>>> Hi.
> >>>>>>
> >>>>>> I have 1 form panel with some textboxes and file upload.
> >>>>>> the question is, how to get variables from client/form panel in
> >>>>>> servlet?
> >>>>>> i created DTO/Pojo object to hold variables in client, but i donk
> >>>>>>
> >>> know
> >>>
> >>>>>> how to catch in servlet..
> >>>>>>
> >>>>>> please help
> >>>>>>
> >>>>>> thanks
> >>>>>>
> > >
> >
> >
>
>
> >
>
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