want to create csv file in gwt

[yashujn]

hi all,

i have a in built form, what I want is when user fill the form and
press the submit button the

information will be saved into a csv file on server..... plz guide
me how to do it.

[vinayak kulkarni]

Hello,

Here is how you can do it:

On the client side, after submit:

 final FormPanel formPanel = new FormPanel(C.exportFormPanel());

    formPanel.setAction(GWT.getModuleBaseURL() + C.csv());

    final FlowPanel flowPanel = new FlowPanel();

    formPanel.setWidget(flowPanel);

    final Hidden fileNameHidden = new Hidden(C.chartData(), csvData);  // csvData is the form data you want to flush.

    flowPanel.add(fileNameHidden);

    formPanel.setMethod(FormPanel.METHOD_POST);

    RootLayoutPanel.get().add(formPanel);

    formPanel.submit();

    RootLayoutPanel.get().remove(formPanel);

Have a servlet to handle the form data in the server side:

In the doPost method, have the logic to flush the data

final String data = (String) request.getParameter(CHARTDATA);

    response.setHeader(CACHE_CONTROL, NO_CACHE);

    response.setHeader(PRAGMA, NO_CACHE);

    response.setDateHeader(EXPIRES, 0);

    response.setContentType(APPCSV);

    response.setHeader(CONTENT_DISPOSITION, ATTACH_FILENAME);

    // final String[] a = data.split("@");

    PrintWriter writer = null;

    try

    {

      writer = response.getWriter();

      writer.append(data);

      // for (String s : a)

      // {

      // writer.append(s);

      // writer.append("\n");

      // }

    } finally

    {

      if (writer != null)

      {

        writer.flush();

        writer.close();

      }

    }

This would export the data in the form of csv