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 <= 0) {
			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=0;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,1,false);
		in.close();
	}
}