Improvements in uploading of files, vaadin

Question

I want to upload file to git without saving on local disk. I use vaadin + java in my webapp, and upload component from vaadin.

public OutputStream receiveUpload(String filename, String MIMEType)
{
    this.filename = filename;

    FileOutputStream fos = null;
    try {
        // exist any possibility to no saving file in filepath (only push
        // to git)
        fos = new FileOutputStream(new File(
                filepath + File.separator + filename));
    } catch (Exception e) {
        // How to omit it, I don't want to save file in filepath...
        return null;
    }

    return fos;
}

public void uploadSucceeded(Upload.SucceededEvent event)
{               
    try {
        // this method read file from filepath. Exist any possibilty to
        // transfer file from upload panel to here without saving this
        // file in filepath ?
        commitToGit(filepath + File.separator + filename);
    } catch(Exception e) {
        e.printStackTrace();
    } finally {
        // removing file from filepath, it is no comfortable for me
        File file = new File(filepath + File.separator + filename);
        if (file != null) {
            file.delete();
        }      
    }  
}

your commitToGit method must just provide a InputStream, you can the pipe the OutputStream of the uploadcomponent to the InputStream of the git uploader. — André Schild, Jul 19 '14 at 19:54
Could you provide example of code... ? I don't have any idea how it reach... — user3328186, Jul 20 '14 at 08:15

score 0 · Answer 1 · edited May 23 '17 at 10:33

0

Look here for the pipe functionality

Best way to Pipe InputStream to OutputStream

in the receiveUpload method you setup the pipe between the uploading file and your git connector. The uploadSucceeded method is then not needed or can be used to cleanup resources.

edited May 23 '17 at 10:33

Community

1
1

answered Jul 21 '14 at 06:33

André Schild

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hmm...Probably I need conversio inn other side. I have (fos) FileOutpuTStream, the first method in method commitToGit() looks: private byte[] readStreamToByteArray(InputStream stream) - so I need inputStrea, not OutputStream... – user3328186 Jul 21 '14 at 06:39

Improvements in uploading of files, vaadin

1 Answers1