rich:fileUpload - Transfer error occurred

[strannik]

Hi

Is it possible to provide swf-booking-richfaces application with fileUpload sample?

I know there is fileUploadDemo sample and it works fine. But when I tried to integrate it into swf-booking-richfaces application the file seems to be uploaded successfully(listener event is called with relevant data) but UI shows "Transfer error occurred". Unfortunately no exceptions/messages in the logs.

My application is similar to swf-booking-richfaces so it would be very kindly to make it working there.

Thanks

[gjhofmann]

Hi,

when I use richfaces upload component in my spring webflow application I also get the error message "Transfer error occured" although the file is uploaded successfully.

The reason for this error messages seems to be that in FileUpload.js code is looking for an input element named "'javax.faces.ViewState":

findViewState: function(d) {
 var s = 'javax.faces.ViewState';
 var input = d.getElementsByTagName("input");
 for (var i in input) {
 if (input.name == s) {
 return input;
 }
 }
 return d.getElementById(s);
},

This input element should be located in an hidden iframe, but in an SWF application this input element doesn't exist so the above error message is shown.

Does anybody have an idea what's going wrong?

Regards

[strannik]

gjhofmann, do you use Facelets?

It looks like Facelet doesn't have 'javax.faces.ViewState' hidden field and probably save view state on the server. Is it possible to force it saving on the client side?

[strannik]

I made some debugging around and it seems that SWF is unable to save state on the client side. SWF implementation of StateManager is FlowViewStateManager. Here is how it overrides isSavingStateInClient method

 public boolean isSavingStateInClient(FacesContext context) {
 if (!JsfUtils.isFlowRequest()) {
 return delegate.isSavingStateInClient(context);
 } else {
 return false;
 }
 }

So the question is now if fileUpload can work without client-located viewState ?

[andrei_exadel]

Hi,

Please define your environment. Which frameworks do you use in your application?

[strannik]

I use Facelets, Spring beans, Spring Web Flow and JSF. If you want, I can post WAR file(actually it is swf-booking-richfaces with fileUpload sample page).

[mdiskin]

There is an open problem on the Spring Faces which is related to this.

http://jira.springframework.org/browse/FACES-6

[strannik]

Thanks.
So do you suggest reverting back to SWF 2.0 and wait for RichFaces update?

[strannik]

I mean "or wait for RichFaces update".

[andrei_exadel]

Strannik,

Yes, please post your WAR file. You can attach it to JIRA or send me directly on amarkavtsov @ exadel . com.

Tnanks.

[gjhofmann]

Hi,

just for testing, I "optimized" the SWF FlowViewStateManager a little bit:

public void writeState(FacesContext context, javax.faces.application.StateManager.SerializedView state)
 throws IOException {
 delegate.writeState(context, state);
}

public boolean isSavingStateInClient(FacesContext context) {
 return delegate.isSavingStateInClient(context);
}

and everything works fine :-)