记一次图片转换ZPL格式(ZPL格式是用于斑马打印机)

由于公司一个地方需要用到图片转换ZPL格式去打印;这里的ZPL格式是打印斑马打印机,这里面有一些小的地方是需要注意的.

由于斑马打印机的型号不一样，设置不一样,外加自身的图片格式(.jpg,.png的不一样),图片的高度和宽度也不一样，就会直接导致打印出来的东西和你理想中的效果不一样，所以这里就需要设置图片的参数和斑马打印机自身的参数等设置。

然后下面贴出来图片转换为ZPL格式的代码,也可以当一个工具类来进行使用。

public class ZPLConveterUtils {private int blackLimit = 380;private int total;private int widthBytes;private boolean compressHex = false;private static Map<Integer, String> mapCode = new HashMap<Integer, String>();{mapCode.put(1, "G");mapCode.put(2, "H");mapCode.put(3, "I");mapCode.put(4, "J");mapCode.put(5, "K");mapCode.put(6, "L");mapCode.put(7, "M");mapCode.put(8, "N");mapCode.put(9, "O");mapCode.put(10, "P");mapCode.put(11, "Q");mapCode.put(12, "R");mapCode.put(13, "S");mapCode.put(14, "T");mapCode.put(15, "U");mapCode.put(16, "V");mapCode.put(17, "W");mapCode.put(18, "X");mapCode.put(19, "Y");mapCode.put(20, "g");mapCode.put(40, "h");mapCode.put(60, "i");mapCode.put(80, "j");mapCode.put(100, "k");mapCode.put(120, "l");mapCode.put(140, "m");mapCode.put(160, "n");mapCode.put(180, "o");mapCode.put(200, "p");mapCode.put(220, "q");mapCode.put(240, "r");mapCode.put(260, "s");mapCode.put(280, "t");mapCode.put(300, "u");mapCode.put(320, "v");mapCode.put(340, "w");mapCode.put(360, "x");mapCode.put(380, "y");mapCode.put(400, "z");}public void setCompressHex(boolean compressHex) {this.compressHex = compressHex;}public void setBlacknessLimitPercentage(int percentage) {this.blackLimit = (percentage * 768 / 100);}private String headDoc() {String str = "^XA " + "^FO0,0^GFA," + total + "," + total + "," + widthBytes + ", ";return str;}private String footDoc() {String str = "^FS" + "^XZ";return str;}/*** Image to zpi string data.** @param image* @return* @throws IOException*/public String convertfromImg(BufferedImage image) throws IOException {String cuerpo = createBody(image);if (compressHex) {cuerpo = encodeHexAscii(cuerpo,20);}return headDoc() + cuerpo + footDoc();}/*    public static void main(String[] args) throws Exception {resizeImage("image/gavin2019GY-HCK-21099224.jpg","image/cc.png",810,1220);File file = new File("image/cc.png");BufferedImage orginalImage = ImageIO.read(file);ZPLConveterUtils zpl = new ZPLConveterUtils();zpl.setCompressHex(true);zpl.setBlacknessLimitPercentage(50);String content = zpl.convertfromImg(orginalImage);JSONObject jsonObject = new JSONObject();jsonObject.put("str", content);System.out.println(jsonObject);}public static void resizeImage(String srcImgPath, String distImgPath,int width, int height) throws IOException {File srcFile = new File(srcImgPath);Image srcImg = ImageIO.read(srcFile);BufferedImage buffImg = null;buffImg = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);buffImg.getGraphics().drawImage(srcImg.getScaledInstance(width, height, Image.SCALE_SMOOTH), 0,0, null);ImageIO.write(buffImg, "JPG", new File(distImgPath));}*//*** the BufferedImage to String** @param orginalImage* @return* @throws IOException*/private String createBody(BufferedImage orginalImage) throws IOException {StringBuffer sb = new StringBuffer();Graphics2D graphics = orginalImage.createGraphics();graphics.drawImage(orginalImage, 0, 0, null);int height = orginalImage.getHeight();int width = orginalImage.getWidth();// int newWidth = width + 200;int rgb, red, green, blue, index = 0;char auxBinaryChar[] = {'0', '0', '0', '0', '0', '0', '0', '0'};// widthBytes = width / 16 ;// widthBytes = width % 8 > 0 ? (((int) (width / 8)) + 1) : width / 8;widthBytes = width % 8 > 0 ? (((int) (width / 8)) + 1) : width / 8;this.total = widthBytes * height;for (int h = 0; h < height; h++) {for (int w = 0; w < width; w++) {rgb = orginalImage.getRGB(w, h);red = (rgb >> 16) & 0x000000FF;green = (rgb >> 8) & 0x000000FF;blue = (rgb) & 0x000000FF;char auxChar = '1';int totalColor = red + green + blue;if (totalColor > blackLimit) {auxChar = '0';}auxBinaryChar[index] = auxChar;index++;if (index == 8 || w == (width - 1)) {sb.append(fourByteBinary(new String(auxBinaryChar)));auxBinaryChar = new char[]{'0', '0', '0', '0', '0', '0', '0', '0'};index = 0;}}sb.append("\n");}return sb.toString();}/*** @param binaryStr* @return*/private String fourByteBinary(String binaryStr) {// int decimal = Integer.parseInt(binaryStr, 2);int decimal = Integer.parseInt(binaryStr, 2);return decimal > 15 ? Integer.toString(decimal, 16).toUpperCase() : "0" + Integer.toString(decimal, 16).toUpperCase();}/*** @param code* @return*/private String encodeHexAscii(String code) {int maxlinea = widthBytes * 2;StringBuffer sbCode = new StringBuffer();StringBuffer sbLinea = new StringBuffer();String previousLine = null;int counter = 1;char aux = code.charAt(0);boolean firstChar = false;for (int i = 1; i < code.length(); i++) {if (firstChar) {aux = code.charAt(i);firstChar = false;continue;}if (code.charAt(i) == '\n') {if (counter >= maxlinea && aux == '0') {sbLinea.append(",");} else if (counter >= maxlinea && aux == 'F') {sbLinea.append("!");} else if (counter > 20) {int multi20 = (counter / 20) * 20;int resto20 = (counter % 20);sbLinea.append(mapCode.get(multi20));if (resto20 != 0) {sbLinea.append(mapCode.get(resto20) + aux);} else {sbLinea.append(aux);}} else {sbLinea.append(mapCode.get(counter) + aux);if (mapCode.get(counter) == null) {}}counter = 1;firstChar = true;if (sbLinea.toString().equals(previousLine)) {sbCode.append(":");} else {sbCode.append(sbLinea.toString());}previousLine = sbLinea.toString();sbLinea.setLength(0);continue;}if (aux == code.charAt(i)) {counter++;} else {if (counter > 20) {int multi20 = (counter / 20) * 20;int resto20 = (counter % 20);sbLinea.append(mapCode.get(multi20));if (resto20 != 0) {sbLinea.append(mapCode.get(resto20) + aux);} else {sbLinea.append(aux);}} else {sbLinea.append(mapCode.get(counter) + aux);}counter = 1;aux = code.charAt(i);}}return sbCode.toString();}private String encodeHexAscii(String code,int number) {int maxlinea = widthBytes * 2;StringBuffer sbCode = new StringBuffer();StringBuffer sbLinea = new StringBuffer();String previousLine = null;int counter = 1;char aux = code.charAt(0);boolean firstChar = false;for (int i = 1; i < code.length(); i++) {if (firstChar) {aux = code.charAt(i);firstChar = false;continue;}if (code.charAt(i) == '\n') {if (counter >= maxlinea && aux == '0') {sbLinea.append(",");} else if (counter >= maxlinea && aux == 'F') {sbLinea.append("!");} else if (counter > number) {int multi20 = (counter / number) * number;int resto20 = (counter % number);sbLinea.append(mapCode.get(multi20));if (resto20 != 0) {sbLinea.append(mapCode.get(resto20) + aux);} else {sbLinea.append(aux);}} else {sbLinea.append(mapCode.get(counter) + aux);if (mapCode.get(counter) == null) {}}counter = 1;firstChar = true;if (sbLinea.toString().equals(previousLine)) {sbCode.append(":");} else {sbCode.append(sbLinea.toString());}previousLine = sbLinea.toString();sbLinea.setLength(0);continue;}if (aux == code.charAt(i)) {counter++;} else {if (counter > number) {int multi20 = (counter / number) * number;int resto20 = (counter % number);sbLinea.append(mapCode.get(multi20));if (resto20 != 0) {sbLinea.append(mapCode.get(resto20) + aux);} else {sbLinea.append(aux);}} else {sbLinea.append(mapCode.get(counter) + aux);}counter = 1;aux = code.charAt(i);}}return sbCode.toString();}

注意这里再重复下打印出来的效果不一样；导致的原因有可能:

　1 :　斑马打印机型号问题

　2 : 　斑马打印机的参数设置问题

　 3 : 　图片自身的类型和图片的高度宽度等参数信息的设置

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记一次图片转换ZPL格式(ZPL格式是用于斑马打印机)

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