Hi,
I am new to GWT and facing problem with Fileupload.
I have a form which has multiple rails.
In one of the rail, there is a form which has Fileupload widget.
The form has button, which on click is supposed to send the file
details to the servlet.
In the servlet code, multipart is false , even the the encoding is set
to -
------ importFileUploadForm.setEncoding(FormPanel.ENCODING_MULTIPART);
But in the servlet the multipart is shown as false.
Servlet code
public String Importfile(String fileName)
{
HttpServletResponse response = this.getThreadLocalResponse();
HttpServletRequest request = this.getThreadLocalRequest();
HttpSession session = request.getSession();
boolean isMultipart =
ServletFileUpload.isMultipartContent(request);
long uploadFileSize = 0;
response.setContentType("text/plain");
if (isMultipart)
{
// do the processing on file.
}
else
{
// do something else
}
return null;
}
Form code.
//Import file upload Form
importFileUploadForm = new FormPanel();
importFileUploadForm.setAction(IMPORT_ACTION);
// null value
importFileUploadForm.setEncoding(FormPanel.ENCODING_MULTIPART);
importFileUploadForm.setMethod(FormPanel.METHOD_POST);
DOM.setElementAttribute(importFileUploadForm.getElement(),
"name",
"importFileUploadForm");
DOM.setElementAttribute(importFileUploadForm.getElement(), "id",
"importFileUploadForm");
//Import file upload form submit and submit completed event
handlers
importFileUploadForm.addFormHandler(new FormHandler()
{
public void onSubmit(FormSubmitEvent event)
{
String filename = importFileField.getFilename();
if (filename.trim().length() == 0)
{
Window.alert("Please select a file to
upload");
event.setCancelled(true);
}
else
{
Object objArr[] = {this,filename};
// get event manager
colMgr.DispatchEvent(impEvent);
}
}
@Override
public void onSubmitComplete(FormSubmitCompleteEvent
arg0) {
// TODO Auto-generated method stub
//arg0.getSource().
.equals(obj)event.setCancelled(true);
}
});
//File upload widget
importFileField = new FileUpload();
importFile.setStyleName("gwt-TextBox");
importFileField.setName("importFile");
DOM.setElementAttribute(importFileField.getElement(), "id",
"importFile");
final Button importClear = new Button("Clear");
//submits the file import upload form
importUpload.addClickHandler(new ClickHandler()
{
public void onClick(ClickEvent event)
{
importFileUploadForm.submit();
}
});
//clears the file upload widget by replacing it with a new copy
importClear.addClickHandler(new ClickHandler()
{
public void onClick(ClickEvent event)
{
//RootPanel rootPanel =
RootPanel.get("importFileUploadForm"); //
get container div
DOM.removeChild(importFileUploadForm.getElement(),
importFileField.getElement()); //remove input
importFileField = new FileUpload(); //create
replacement widget
importFileField.setStyleName("gwt-TextBox");
//add style info
DOM.setElementAttribute(importFileField.getElement(), "id",
"importFile"); //set id
DOM.setElementAttribute(importFileField.getElement(), "size",
"75");//set size
importFileUploadForm.add(importFileField);
//add replacement
widget into container div
}
});
leftTopRail.add(importMgrHeader);
leftTopRail.add(importFileUploadForm);
importTabRootPanel.add(importFileField, "importFileUploadForm");
importTabRootPanel.add(importUpload, "importFileUploadForm");
importTabRootPanel.add(importClear,"importFileUploadForm");
this.leftTopRail = leftTopRail;
}
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