nothing happen when click on button

[kirubakaranM]

am using vaadin 7.6 and simple file downloader 1.0.4

by using simple file downloader nothing happen when click button

please help me to solve this

and may i know there is any required to compile it's widget

the below one is what am try

 SimpleFileDownloader downloader = new SimpleFileDownloader();
    addExtension(downloader);
         
    Button button = new Button("Click Me");
    button.addClickListener(new Button.ClickListener()
    {
        public void buttonClick(ClickEvent event) 
        {
            StreamResource resource=getStream(new File("/home/likewise-open/KONNECTBI/kirubakaran.m/Downloads/DL_TSTMDLLD.xlsx"));
            downloader.setFileDownloadResource(resource);
            downloader.download();
        }
    });
    
    gl.addComponent(button, 4, 0);
    
}


private StreamResource getStream(File inputfile) {
    
    StreamResource.StreamSource source = new StreamResource.StreamSource() {

        public InputStream getStream() {
           
            InputStream input=null;
            try
            {
                input = new  FileInputStream(inputfile);
            } 
            catch (FileNotFoundException e)
            {
                e.printStackTrace();
            }
              return input;

        }
    };
  StreamResource resource = new StreamResource ( source, inputfile.getName());
    return resource;

}

[javydreamercsw]

I'm having the same issue on 7.7.10. I believe it has something to do with the addExtension method he has in his sample code.

That has to be done on the UI class. The method is protected so it complicates things a bit.

[javydreamercsw]

I managed to add the extension and still nothing happens.

[kirubakaranM]

have you find any other file down loader for download on demand files

[javydreamercsw]

I'm working on a few options, will report back if I find something. If I don't please ping me again in a few days in case I forget.

[javydreamercsw]

This ended up working for me:

        public boolean sendConvertedFileToUser(final UI app, final File fileToExport,
            final String exportFileName, String mimeType) {
        TemporaryFileDownloadResource resource;
        try {
            resource = new TemporaryFileDownloadResource(app, exportFileName,
                    mimeType, fileToExport);
            if (null == app) {
                UI.getCurrent().getPage().open(resource, exportFileName, false);
            } else {
                app.getPage().open(resource, exportFileName, false);
            }
        } catch (final FileNotFoundException e) {
            LOG.log(Level.WARNING,
                    "Sending file to user failed with FileNotFoundException {0}", e);
            return false;
        }
        return true;
    }

[tdq]

I created example project for SimpleFileDownloader. Hope it will help to resolve problems.
https://github.com/tdq/AddonTest

[javydreamercsw]

In my case, @tdq , I wanted not to link it to a button. I wanted to generate content and push it to client. Not always linked to a button. It seems you need to have the content ready before you create the button.