java - 条码 png 打印在 40 毫米 x 15 毫米大小的标签上的图像在打印时缩小为 20 毫米 x10 毫米且未扫描

Question

我正面临这个问题，我正在使用 code128 生成条形码并将其保存在 PNG 文件中。将相同的 PNG 文件提供给具有所需文档属性的打印机作业以在所需尺寸的标签上打印时，尺寸会减小并且不会被扫描。

提供的实际打印尺寸 - 40 毫米 x 15 毫米。标签上印制的尺寸 - 20mm x 10mm

我将此属性添加到 PrintRequestAttributeSet - pras.add(MediaSize.findMedia(40, 15, Size2DSyntax.MM));

但效果并不准确，我尝试在那里玩弄 x 和 y 参数值，但打印的尺寸仍然在 25mm x 10mm 以内。

任何用于打印所需尺寸条码的输入都将受到高度赞赏。我在下面给出了完整的代码细节。

（PS：我正在使用“Honeywell PC42t Plus”热敏打印机打印，目前我的标签尺寸为 700mm x 280mm，我正在等待收到 40mm x 15mm 尺寸的实际标签。所以这是为了测试，我可以收到实际标签后，利用整个标签空间打印实际的 40 毫米 x 15 毫米条形码）

public class One_TestMyBarcode {

    private static final String MIME_TYPE = "image/x-png";
    private static final String DELIMTER = "-";
    static String image_name = "NewBarcode_One.png";

    public static void main(String[] args) {

        FileInputStream textStream = null;
        int lastSeqNo = 001;
        String roCode= "ERO";

        AtomicInteger seqNo = new AtomicInteger(lastSeqNo);
        Code128Bean code128 = new Code128Bean();
        code128.setHeight(15f);
        //code128.setBarHeight(40f);
        //code128.setModuleWidth(0.3);
        code128.setModuleWidth(0.2);
        code128.setQuietZone(10);
        code128.doQuietZone(true);

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        BitmapCanvasProvider canvas = new BitmapCanvasProvider(baos, MIME_TYPE, 300, BufferedImage.TYPE_BYTE_BINARY,
                false, 0);

        StringBuffer codeData = new StringBuffer();
        codeData.append(roCode);
        codeData.append(DELIMTER);

        int currentSeqNo = seqNo.getAndIncrement();
        String seq = String.format("%07d", currentSeqNo);
        codeData.append(seq);
        codeData.append(DELIMTER);
        Calendar current = Calendar.getInstance();
        String year = Integer.toString(current.get(Calendar.YEAR)).substring(2);
        codeData.append(year);

        //logger.debug("barcode dimension is ");
        code128.calcDimensions(codeData.toString());
        code128.generateBarcode(canvas, codeData.toString());

        try {
            canvas.finish();
        } catch (IOException e) {
            throw new RuntimeException(e);

        }

        FileOutputStream fos = null;
        try {
            //fos = new FileOutputStream("C:\\Users\\Vinayak\\Desktop\\barcode\\" +image_name);
            fos = new FileOutputStream(image_name);
            fos.write(baos.toByteArray());
            fos.flush();
            fos.close();
            //textStream = new FileInputStream("C:\\Users\\Vinayak\\Desktop\\barcode\\" +image_name);
            textStream = new FileInputStream(image_name);
        } catch (FileNotFoundException e1) {
            e1.printStackTrace();
        } catch (IOException e1) {
            e1.printStackTrace();
        }

        DocFlavor flavor = DocFlavor.INPUT_STREAM.PNG;

        // Position the default print service
        PrintService printService = PrintServiceLookup.lookupDefaultPrintService();

        // Create a print job
        DocPrintJob job = printService.createPrintJob();

        // Set the print properties
        PrintRequestAttributeSet pras = new HashPrintRequestAttributeSet();

        //printed a very small size (20mm x 10mm) and does not scan
        pras.add(MediaSize.findMedia(40, 15, Size2DSyntax.MM));


        //DOESN'T Scan Either
        //pras.add(OrientationRequested.LANDSCAPE);
        //pras.add(OrientationRequested.PORTRAIT);
        //pras.add(MediaSizeName.ISO_A10);  

        //Doesn't print at all
        //pras.add(new MediaPrintableArea(0, 0, 40, 15, MediaPrintableArea.MM));


        pras.add(new Copies(1));
        DocAttributeSet das = new HashDocAttributeSet();

        // Specify print content
        Doc doc = new SimpleDoc(textStream, flavor, das);

        // Do not display the print dialog, print directly
        try {
               System.err.println("Loop - print");
               job.print(doc, pras); // Make specific print operations for each page

        } catch (PrintException pe) {
            pe.printStackTrace();
        }

    }

}

标签： javaapithermal-printerbarcode-printingcode128

Answer 1

谢谢@Erich。我已经使用了您给定的代码并更新了 ZPL 和 DP 语言的 printCommand。您更新的代码 (^LH) 能够打印条形码，但没有被扫描（不确定，我尝试了一些变体但没有帮助），所以我在那里尝试了 DPL 命令，如代码所示，它能够打印条形码并成功扫描。非常感谢您的帮助和指导。

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package BARCODE;

import javax.print.*;
import javax.print.PrintService;

public class PrintUsingZPL1 {
  public static void main(String[] args) {
    StringBuilder codeData = new StringBuilder();
    //codeData.append("Stackoverflow"); // example
    codeData.append("CRO-0000100-20"); // example
    String printData = codeData.toString();
    System.out.println("Data for Barcode " +printData);

    /*String printCommand = "^XA^LH0,0^FO50,50^BCN,100,Y,N,N^FD"+
                          codeData.toString()+
                          "^FS^XZ";*/

   /* String printCommand = "PP65,107:AN7\r\n" + 
            "BARSET \"CODE128B\",2,1,1,71\r\n" + 
            "PB \"CRO-0000001-20\"\r\n" + 
            "PP79,37:NASC 8\r\n" + 
            "FT \"CG Triumvirate Condensed Bold\",8,0,98\r\n" + 
            "PT \"CRO-0000001-20\"\r\n" + 
            "LAYOUT RUN \"\"\r\n" + 
            "PF"; */
  String printCommand = "PP35,90:AN7\r\n" + 
    "BARSET \"CODE39A\",3,1,1,67\r\n" + 
    "PB " +codeData.toString()+ "\r\n" + 
    "PP65,23:NASC 9\r\n" + 
    "FT \"Andale Mono Bold\",8,0\r\n" + 
    "PT " +codeData.toString()+ "\r\n" + 
    "LAYOUT RUN \"\"\r\n" + 
    "PF";

    /*String printCommand = "PP65,107:AN7\r\n" + 
            "BARSET \"CODE128B\",2,1,1,71\r\n" + 
            "PB "+printData+"\r\n" + 
            "PP79,37:NASC 8\r\n" + 
            "FT \"CG Triumvirate Condensed Bold\",8,0,98\r\n" + 
            "PT "+printData+"\r\n" + 
            "LAYOUT RUN \"\"\r\n" + 
            "PF";*/

    PrintService printService = PrintServiceLookup.lookupDefaultPrintService();
    try {
      DocPrintJob job = printService.createPrintJob();
      Doc doc = new SimpleDoc(printCommand.getBytes(), DocFlavor.BYTE_ARRAY.AUTOSENSE, null);
      job.print(doc, null);
    }
    catch(PrintException e) { /* error handling goes here */ }
  }
}

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