Print to Printer

Two ways to reach a printer: from the browser (the user's own print dialog and printer) or from the server with the Java Print Service - no dialog, the server picks the printer, copies and duplex. Server printing uses the printers installed on this PC.

Server print job

Document Page setup preset Printer

Copies

Two-sided

Print to file (no paper) - recommended while studying

With "print to file" the printer driver writes its output to data/printed. For Microsoft Print to PDF that file is a PDF you can open below.

Browser print

The PDF on the right is shown by the browser's PDF viewer. Its print button opens your own print dialog - the server is not involved.

Printers on this PC

PrintServiceLookup.lookupPrintServices()

Name	Type	Status	Queued jobs
Microsoft Print to PDF default	Virtual (file / app)	Accepting jobs	0

Document

How it works

PrintServiceLookup.lookupPrintServices(null, null) lists the installed printers (Windows spooler).
PDFBox PDFPageable renders each PDF page; PrinterJob.print(attributes) prints without a dialog.
Attributes: Copies, Sides.TWO_SIDED_LONG_EDGE (duplex), JobName and Destination(file URI) for print-to-file.
Server printing only reaches printers of the machine running Spring Boot. Users far away print from their browser.

try (PDDocument pdf = Loader.loadPDF(bytes)) {
    PrinterJob job = PrinterJob.getPrinterJob();
    job.setPrintService(service);
    job.setPageable(new PDFPageable(pdf));
    PrintRequestAttributeSet attrs = new HashPrintRequestAttributeSet();
    attrs.add(new Copies(2));
    attrs.add(Sides.TWO_SIDED_LONG_EDGE);
    job.print(attrs);
}

Files: service/PrinterService.java, web/PrinterController.java.