Print from Glassfish server

I have a Glassfish server where I generate and save a zpl file (for zebra printers) through a standard web application in the default path / var / tmp.

The saving process does it correctly, immediately after this I want to send it to print on the machine where they are using the web application, but for some reason it does not. I would like to know if you have some tips to be able to achieve this.

Here my code:

//Guardo el archivo
public void saveZplFile(String ID) {
    try {
        java.io.PrintWriter out = new java.io.PrintWriter(new java.io.FileWriter(new java.io.File(rutaServer)));
        out.print(this.zpl);
        out.close();
    } catch (Exception ex) {
        System.out.println("El archivo '" + ruta + "' no pudo se creado. Motivo:\n " + ex.toString());
    }
}

//Proceso de impresion
public int print (Graphics g, PageFormat f, int pageIndex)
{
    String almacena="";
    String rutaServer="/var/tmp/Zebra_1612017.zpl";


    if(pageIndex==0) {
        try {
            BufferedReader br = new BufferedReader(new FileReader(rutilla));
            String line;
            int valorIncrementa=100;
            while ((line = br.readLine()) != null) {
                  valorIncrementa = valorIncrementa+10;
                  g.drawString(line, 100,valorIncrementa);
                  System.out.println("imprimiendo> " + line);
            }
        } catch (Exception e) {
            System.out.println("ERROR DE IMPRESION " + e.toString());
        }
        return PAGE_EXISTS;
    } else
        return NO_SUCH_PAGE;
}

This process works in my premises, but when it passes to the test or production server, it does not work.