Downloading files

The fileDownload component can be used to stream binary contents such as files to requesting browsers, by wrapping the components with any JSF command component such as a button or link.

How to do it...

The value of the fileDownload component should be an instance of org.primefaces.model.StreamedContent. The concrete class org.primefaces.model.DefaultStreamedContent could be used for simple purposes. The following is the backing bean implementation for the file download example along with the component definition.

public class FileController implements Serializable {
    private StreamedContent file;
    public FileController() {
        InputStream stream = this.getClass().
        getResourceAsStream("/chapter7/PFSamplePDF.pdf");
        file = new DefaultStreamedContent(stream, 
        "application/pdf", "PFSample.pdf");
    }

    public StreamedContent getFile() {
        return file;
    }

    public StreamedContent getDownloadFile() {
        return downloadFile...