Jim, the class is also ClientFileSystemBridge Apache FileUpload?
Thank you!
On 2 mar, 17:49, Alfredo Quiroga-Villamil <laww...@gmail.com> wrote:
> If your backend is Spring they also have great support for this. A few
> lines only and you are up and running.
>
> http://www.ioncannon.net/programming/975/spring-3-file-upload-example/
>
> Best regards,
>
> Alfredo
>
>
>
>
>
>
>
> On Fri, Mar 2, 2012 at 3:45 PM, Thad <thad.humphr...@gmail.com> wrote:
> > I agree with Jim on using Apache FileUpload.
>
> > One trick I occasionally use to simplify my upload processing for text
> > fields is to create a hidden field within the form. Before calling
> > form.submit(), I do whatever validation and format conversions I want and
> > assemble the non-file input into a JSON string that I assign to my hidden
> > field. With this method I can submit values from fields outside of the
> > FormPanel and greater control over the fields inside the panel.
>
> > On Friday, March 2, 2012 2:33:29 PM UTC-5, Jim Douglas wrote:
>
> >> Hi Leonardo,
>
> >> I use Apache FileUpload to manage the process:
>
> >>http://commons.apache.org/**fileupload/<http://commons.apache.org/fileupload/>
>
> >> Here's the doPost() method from my FileUploadServelet:
>
> >> @Override
> >> public void doPost(HttpServletRequest p_request,
> >> HttpServletResponse p_response)
> >> throws ServletException, IOException
> >> {
> >> ServletFileUpload upload = new ServletFileUpload();
>
> >> /*
> >> * This tracks the state of the upload progress. The client
> >> will
> >> * occasionally request a progress update; the doGet() method
> >> * returns this information to the client in an XML structure.
> >> */
> >> FileUploadProgress progress = new FileUploadProgress();
> >> HttpSession session = p_request.getSession();
> >> session.setAttribute("**progress", progress);
> >> upload.setProgressListener(**progress);
>
> >> try
> >> {
> >> FileItemIterator iter = upload.getItemIterator(p_**request);
> >> StringBuilder response = new StringBuilder();
> >> Integer id = null;
> >> while (iter.hasNext())
> >> {
> >> FileItemStream item = iter.next();
> >> String name = item.getFieldName();
> >> InputStream stream = item.openStream();
> >> if (item.isFormField())
> >> {
> >> String value = Streams.asString(stream);
> >> if ("id".equals(name))
> >> {
> >> id = Integer.valueOf(value);
> >> }
> >> if ("saveAs".equals(name))
> >> {
> >> if (id == null)
> >> {
>
> >> p_response.sendError(SC_**INTERNAL_SERVER_ERROR,
> >> "No filesystem id for " + name + " " +
> >> value);
> >> return;
> >> }
> >> File f =
> >> ClientFileSystemBridge.**createTempFile(value);
> >> ClientFileSystemBridge.put(id, value, f);
> >> }
> >> response.append(name).append(' ')
> >> .append(value).append('\n');
> >> }
> >> else
> >> {
> >> String filename = item.getName();
> >> if (id == null)
> >> {
> >> p_response.sendError(SC_**INTERNAL_SERVER_ERROR,
> >> "No filesystem id for file " + filename);
> >> return;
> >> }
> >> File f =
> >> ClientFileSystemBridge.**createTempFile(filename);
> >> OutputStream out = new FileOutputStream(f);
> >> try
> >> {
> >> // This WILL fail with
> >> org.mortbay.jetty.EofException
> >> // if the client form disappears before we've
> >> read the
> >> // entire stream.
> >> int bytes;
> >> byte buf[] = new byte[32768];
> >> while ((bytes = stream.read(buf)) > 0)
> >> out.write(buf, 0, bytes);
> >> }
> >> catch (Throwable t)
> >> {
> >> p_response.sendError(SC_**INTERNAL_SERVER_ERROR,
> >> t.getClass().getName() + " " +
> >> t.getMessage());
> >> t.printStackTrace();
> >> }
> >> finally
> >> {
> >> out.close();
> >> stream.close();
> >> }
> >> ClientFileSystemBridge.put(id, filename, f);
> >> response.append(name).append(' ').
> >> append(f.length()).append(' ').
> >> append(filename).append('\n')**;
> >> }
> >> }
> >> String message = response.toString();
> >> p_response.reset();
> >> p_response.setContentType("**text/plain");
> >> p_response.setContentLength(**message.length());
> >> Writer writer = p_response.getWriter();
> >> writer.append(message);
> >> writer.flush();
> >> }
> >> // catch (FileUploadException e)
> >> // {
> >> // p_response.sendError(SC_**INTERNAL_SERVER_ERROR,
> >> e.getMessage());
> >> // e.printStackTrace();
> >> // }
> >> catch (Throwable e)
> >> {
> >> p_response.sendError(SC_**INTERNAL_SERVER_ERROR,
> >> e.getMessage());
> >> e.printStackTrace();
> >> }
> >> }
>
> >> And a helper function for reporting progress:
>
> >> import org.apache.commons.fileupload.**ProgressListener;
>
> >> public class FileUploadProgress implements ProgressListener
> >> {
> >> private volatile long m_bytesRead;
> >> private volatile long m_contentLength;
> >> private volatile int m_item;
>
> >> public FileUploadProgress()
> >> {
> >> super();
> >> }
>
> >> public void update(long p_bytesRead, long p_contentLength, int
> >> p_item)
> >> {
> >> m_bytesRead = p_bytesRead;
> >> m_contentLength = p_contentLength;
> >> m_item = p_item;
> >> }
>
> >> public long getBytesRead()
> >> {
> >> return m_bytesRead;
> >> }
>
> >> public long getContentLength()
> >> {
> >> return m_contentLength;
> >> }
>
> >> public int getItem()
> >> {
> >> return m_item;
> >> }
> >> }
>
> >> On Mar 2, 5:26 am, Leonardo Terrão <leonardoter...@gmail.com> wrote:
> >> > Hello everybody!
>
> >> > Following are some examples found right here in the discussion group
> >> > took two classes below.
>
> >> > In my class I have ArquivoUpload umTextBox a form with a ListBox and a
> >> > FileUpload. In class FileUploadServlet're getting only the data from
> >> > the FileUpload. Could someone help me also take the data from the
> >> > TextBox?
> >> > In debug mode I see everything that is in the form of the request but
> >> > I can not extract the values.
>
> >> > public class ArquivoUpload implements EntryPoint {
>
> >> > public static final String UPLOAD_ACTION_URL =
> >> GWT.getModuleBaseURL()
> >> > + "upload";
>
> >> > @Override
> >> > public void onModuleLoad() {
>
> >> > // Cria um FormPanel e apontá-lo para um serviço.
> >> > final FormPanel form = new FormPanel();
> >> > form.setAction(UPLOAD_ACTION_**URL);
>
> >> > // Porque nós vamos adicionar um widget FileUpload,
> >> vamos precisar
> >> > para
> >> > // definir o
> >> > // Form usar o método POST, e codificação MIME
> >> multipart.
> >> > form.setEncoding(FormPanel.**ENCODING_MULTIPART);
> >> > form.setMethod(FormPanel.**METHOD_POST);
>
> >> > // Cria um painel para conter todos os elementos do
> >> formulário.
> >> > VerticalPanel panel = new VerticalPanel();
> >> > form.setWidget(panel);
>
> >> > // Criar um TextBox, dando-lhe um nome para que ele
> >> será submetido.
> >> > final TextBox tb = new TextBox();
> >> > tb.setName("**TextBoxFormElement");
> >> > panel.add(tb);
>
> >> > // Criar um ListBox, dando-lhe um nome e alguns valores
> >> que devem
> >> > ser
> >> > // associados
> >> > // Com suas opções.
> >> > ListBox lb = new ListBox();
> >> > lb.setName("**listBoxFormElement");
> >> > lb.addItem("foo", "fooValue");
> >> > lb.addItem("bar", "barValue");
> >> > lb.addItem("baz", "bazValue");
> >> > panel.add(lb);
>
> >> > // Criar um widget FileUpload.
> >> > final FileUpload upload = new FileUpload();
> >> > upload.setName("**uploadFormElement");
> >> > panel.add(upload);
>
> >> > panel.add(new UploadForm());
>
> >> > // Adicionar um botão 'Enviar'.
> >> > panel.add(new Button("Submit", new ClickHandler() {
> >> > public void onClick(ClickEvent event) {
> >> > form.submit();
> >> > }
> >> > }));
>
> >> > //Adicionar um manipulador de eventos para o formulário.
> >> > form.addSubmitHandler(new FormPanel.SubmitHandler() {
>
> >> > @Override
> >> > public void onSubmit(SubmitEvent event) {
>
> >> > if (upload.getFilename().equals("**"))
> >> {
> >> > event.cancel();
> >> > return;
> >> > }
>
> >> > //Este
>
> ...
>
> mais »
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