java连接打印机打印PDF

核心代码：

public class PrintService {

    private static final Logger logger = LoggerFactory.getLogger(PrintService.class);

    /**
     * 打印
     * @param in 文件流
     * @param isDuplex 是否双页打印
     * @param copies 份数
     * @param isPortrait 是否竖打
     * @throws Exception
     */
    public void print(InputStream in,boolean isDuplex,int copies,boolean isPortrait) throws Exception {
        if(in == null) {
            throw new TXException("文件流为空");
        }
        if(copies <= ) {
            throw new TXException("打印份数不应小于0");
        }

        logger.info("打印文件: 是否双页打印: "+isDuplex+",份数: "+copies+"是否竖打"+isPortrait);

        try(PDDocument document = PDDocument.load(in);) {

            Book book =new PDFPageable(document);
            PrinterJob job = PrinterJob.getPrinterJob();
            job.setPageable(book);

            HashPrintRequestAttributeSet pars = new HashPrintRequestAttributeSet();
            pars.add(MediaName.ISO_A4_WHITE);

            // 是否双页打印
            if(isDuplex) {
                if(isPortrait){
                    // 正常的竖直双面打印
                    pars.add(Sides.DUPLEX);
                } else {
                    // 水平双面打印,双面长边反转打印
                    pars.add(Sides.TWO_SIDED_LONG_EDGE);
                }   
            }

            // 设置成横/竖打印
            if(isPortrait){
                pars.add(OrientationRequested.PORTRAIT);  
            } else {
                pars.add(OrientationRequested.LANDSCAPE);
            }

            // 打印范围,打印1-2页
            //pars.add(new PageRanges(1, 2));

            // 多份打印
            for(int i=;i<copies;i++) {
                job.print(pars);
            }
        } catch (Exception e) {
            throw e;
        }
    }

    public static void main(String[] args) throws Exception {
        InputStream in = new FileInputStream("D:/test.pdf");
        new PrintService().print(in, false,,false);
        in.close();
    }
}