java如何驱动条形码打印机并能实现WEB打印?

参考javax.print.*大致过程是这样的：写一个servlet，专门实现打印服务这个servlet内是这样处理的：1.获取打印机对象printer通过枚举PrintServiceprintservices[]=PrintServiceLookup.lookupPrintServices(...)2.生成DocPrintJobjob=PrintService.createPrintJob();3.生成文档Docdoc=newSimpleDoc(...);需要3个参数第一个是打印的数据，可以根据条码，生成一幅图像，然把图像作为输入流，作为第一个参数第二个参数用一个DocFlavor.INPUT_STREAM对象DocFlavor类有相应的静态变量，你根据图像的mime类型选择第三个参数是一个DocAttributeSet对象4.打印job.print(doc,pras);这是我以前写的练习：-----------------------------------------------------------------------packageprinttest;importjava.io.*;importjavax.print.*;importjava.awt.*;importjava.awt.image.*;importjavax.imageio.*;publicclassApplication1{publicstaticvoidtest(Stringcode){try{DocFlavorflavor=DocFlavor.INPUT_STREAM.JPEG;//getaprinterPrintService[]printers=PrintServiceLookup.lookupPrintServices(flavor,null);for(inti=0;i<printers.length;i++)System.out.println(printers[i].getName());PrintServiceprinter=printers[0];//jobDocPrintJobjob=printer.createPrintJob();//documentBufferedImageimg=newBufferedImage(400,300,BufferedImage.TYPE_USHORT_555_RGB);Graphicsg=img.getGraphics();g.drawString(code,100,100);ByteArrayOutputStreamoutstream=newByteArrayOutputStream();ImageIO.write(img,"jpg",outstream);byte[]buf=outstream.toByteArray();InputStreamstream=newByteArrayInputStream(buf);Docdoc=newSimpleDoc(stream,flavor,null);//printjob.print(doc,null);}catch(Exceptione){e.printStackTrace();}}//Mainmethodpublicstaticvoidmain(String[]args){test("12345");}}