Question

我的打印与ESC / POS命令兼容时出现问题，我成功打印了文本和行。

这是我的模型： https://www.inputservice.com.br/leopardo-a8

以及文档中的打印支持：

Códigosde Barras（条形码翻译）：EAN8，EAN13，CODE39，ITF，CODEBAR，CODE128，CODE93，UPC-A，UPC-E，PDF417 * e QR代码。 Emulação（仿真）：ESC / POS

我不明白，如果要打印条形码，是否需要在图像中转换条形码？还是不？

我找到了打印大图像的教程，这是链接： http://new-grumpy-mentat.blogspot.com/2014/06/java-escpos-image-printing.html

我按照教程进行操作，但是Qrcode或Barcode中的图像并不总是很好，请参见图片：

现在查看我的代码：

PrintCommands.java

包com.bravos.automap.Util.Print;

public class PrinterCommands {

    public static final byte HT = 0x9;
    public static final byte LF = 0x0A;
    public static final byte CR = 0x0D;
    public static final byte ESC = 0x1B;
    public static final byte DLE = 0x10;
    public static final byte GS = 0x1D;
    public static final byte FS = 0x1C;
    public static final byte STX = 0x02;
    public static final byte US = 0x1F;
    public static final byte CAN = 0x18;
    public static final byte CLR = 0x0C;
    public static final byte EOT = 0x04;

    public final static char ESC_CHAR = 0x1B;
    public final static byte[] LINE_FEED = new byte[]{0x0A};
    public final static byte[] CUT_PAPER = new byte[]{GS, 0x56, 0x00};
    public final static byte[] INIT_PRINTER = new byte[]{ESC_CHAR, 0x40};
    public final static byte[] SET_LINE_SPACE_24 = new byte[]{ESC_CHAR, 0x33, 24};
    public final static byte[] SET_LINE_SPACE_30 = new byte[]{ESC_CHAR, 0x33, 30};

    public static final byte[] INIT = {27, 64};

    public static byte[] FEED_LINE = {10};

    public static byte[] SELECT_FONT_A = {27, 33, 0};

    public static byte[] HEADER_FONT = {27, 33, 32};


    public static byte[] FONT_3X = {0x1D, 0x21, 0x21};
    public static byte[] FONT_2X = {0x1D, 0x21, 0x11};
    public static byte[] FONT_1X = {0x1D, 0x21, 0x00};

    // Bold
    public static byte FONT_BOLD = ((byte)(0x8 | SELECT_FONT_A[2]));

    // Height
    public static byte FONT_HEIGHT = ((byte)(0x10 | SELECT_FONT_A[2]));

    // Width
    public static byte FONT_WIDTH = ((byte) (0x20 | SELECT_FONT_A[2]));

    // Underline
    public static byte FONT_UNDER = ((byte)(0x80 | SELECT_FONT_A[2]));

    // Small
    public static byte FONT_SMALL = ((byte)(0x1 | SELECT_FONT_A[2]));


    public static byte[] SET_BAR_CODE_HEIGHT = {29, 104, 100};
    public static byte[] PRINT_BAR_CODE_1 = {29, 107, 2};
    public static byte[] SEND_NULL_BYTE = {0x00};

    public static byte[] SELECT_PRINT_SHEET = {0x1B, 0x63, 0x30, 0x02};
    public static byte[] FEED_PAPER_AND_CUT = {0x1D, 0x56, 66, 0x00};

    public static byte[] SELECT_CYRILLIC_CHARACTER_CODE_TABLE = {0x1B, 0x74, 0x11};

    public static byte[] SELECT_BIT_IMAGE_MODE = {0x1B, 0x2A, 33, (byte) 255, 3};

    public static byte[] SELECT_BIT_IMAGE_MODE_OFI = {ESC_CHAR, 0x2A, 33};;

    public static byte[] SELECT_BIT_IMAGE_MODE_V3 = {0x1B, 0x2A, 33, -128, 0};

    public static byte[] SELECT_BIT_IMAGE_MODE_V4 = {0x1B, 0x2A, 33, 127, 0};

    public static byte[] SELECT_BIT_IMAGE_MODE_V2 = {0x1B, 0x2A, 33};

    public static byte[] SELECT_BIT_IMAGE_MODE_V5 = {0x1B, 0x2A, 33, 124, 1};

    public static byte[] SET_LINE_SPACING_24 = {0x1B, 0x33, 24};
    public static byte[] SET_LINE_SPACING_30 = {0x1B, 0x33, 30};

    public static byte[] TRANSMIT_DLE_PRINTER_STATUS = {0x10, 0x04, 0x01};
    public static byte[] TRANSMIT_DLE_OFFLINE_PRINTER_STATUS = {0x10, 0x04, 0x02};
    public static byte[] TRANSMIT_DLE_ERROR_STATUS = {0x10, 0x04, 0x03};
    public static byte[] TRANSMIT_DLE_ROLL_PAPER_SENSOR_STATUS = {0x10, 0x04, 0x04};

    public static final byte[] ESC_FONT_COLOR_DEFAULT = new byte[] { 0x1B, 'r',0x00 };
    public static final byte[] FS_FONT_ALIGN = new byte[] { 0x1C, 0x21, 1, 0x1B,
            0x21, 1 };
    public static final byte[] ESC_ALIGN_LEFT = new byte[] { 0x1b, 'a', 0x00 };
    public static final byte[] ESC_ALIGN_RIGHT = new byte[] { 0x1b, 'a', 0x02 };
    public static final byte[] ESC_ALIGN_CENTER = new byte[] { 0x1b, 'a', 0x01 };
    public static final byte[] ESC_CANCEL_BOLD = new byte[] { 0x1B, 0x45, 0 };


    /*********************************************/
    public static final byte[] ESC_HORIZONTAL_CENTERS = new byte[] { 0x1B, 0x44, 20, 28, 00};
    public static final byte[] ESC_CANCLE_HORIZONTAL_CENTERS = new byte[] { 0x1B, 0x44, 00 };
    /*********************************************/

    public static final byte[] ESC_ENTER = new byte[] { 0x1B, 0x4A, 0x40 };
    public static final byte[] PRINTE_TEST = new byte[] { 0x1D, 0x28, 0x41 };



}

SendPrint.java（此示例来自我的EAN_13代码，但还是一样，只需更改为QRCODE

printerConstants = new PrinterConstants(mmOutputStream);


                mmOutputStream.write(PrinterCommands.INIT);
                mmOutputStream.write(PrinterCommands.ESC_ALIGN_CENTER);

                printerConstants.printString("TESTANDO A FUNÇÃO");

                mmOutputStream.write(PrinterCommands.FEED_LINE);
                mmOutputStream.write(PrinterCommands.FEED_LINE);

                printerConstants.setBold(true);
                printerConstants.printString("TESTANDO A FUNÇÃO");

                mmOutputStream.write(PrinterCommands.FEED_LINE);
                printerConstants.resetToDefault();

                String code = "7800000017106";
                MultiFormatWriter multiFormatWriter = new MultiFormatWriter();
                try {

                    BitMatrix bitMatrix = multiFormatWriter.encode(code, BarcodeFormat.EAN_13,200,80);
                    BarcodeEncoder barcodeEncoder = new BarcodeEncoder();
                    Bitmap bitmap = barcodeEncoder.createBitmap(bitMatrix);
                    int[][] pixels = getPixelsSlow(bitmap);
                    printImage(pixels);
                   // printPhoto(bitmap);

                } catch (WriterException e) {
                    e.printStackTrace();
                }

我的代码有什么问题？我无法打印条形码或Qrcode

0 个答案: