• pdf 转 zpl


    package com.icil.elsa.label.common.utils;
    
    import java.awt.*;
    import java.awt.image.BufferedImage;
    import java.io.BufferedWriter;
    import java.io.File;
    import java.io.FileWriter;
    import java.io.IOException;
    import java.util.HashMap;
    import java.util.Map;
    import java.util.concurrent.ExecutorService;
    
    import org.apache.pdfbox.pdmodel.PDDocument;
    import org.apache.pdfbox.rendering.ImageType;
    import org.apache.pdfbox.rendering.PDFRenderer;
    
    import com.icil.elsa.label.service.client.UpLoadS3Thread;
    
    import lombok.extern.slf4j.Slf4j;
    
    /***********************************************************************
     *<PRE>
     *
     *  File Name       : 
     *
     *  Creation Date   : 19-9-4
     *
     *  Author          : 
     *
     *  Purpose         : 
     *
     *  History         : 
     *
     *</PRE>
     ***************************************************************************/
    @Slf4j
    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();
    
        }
    
        /**
         * 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("
    ");
            }
            return sb.toString();
        }
    
        /**
         * @param binaryStr
         * @return
         */
        private String fourByteBinary(String binaryStr) {
            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) == '
    ') {
                    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) == '
    ') {
                    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();
        }
        
        
        public static String convertPDFToZPL(String pdfPath, boolean isRotate) {
    		File sourceFile = new File(pdfPath);
    		// File destinationFile = new File(destinationDir);
    		PDDocument document = null;
    		FileWriter fw = null;
    		BufferedWriter bw = null;
    		try {
    			if (sourceFile.exists()) {
    				// System.out.println("Images copied to Folder Location: "+
    				// destinationFile.getAbsolutePath());
    				document = PDDocument.load(sourceFile);
    				// PDPage page = document.getDocumentCatalog().getPages().get(0);
    				/*
    				 * PDPageContentStream cs = new PDPageContentStream(document, page,
    				 * PDPageContentStream.AppendMode.PREPEND, false, false); PDRectangle cropBox =
    				 * page.getCropBox(); float tx = (cropBox.getLowerLeftX() +
    				 * cropBox.getUpperRightX()) / 2; float ty = (cropBox.getLowerLeftY() +
    				 * cropBox.getUpperRightY()) / 2; cs.transform(Matrix.getTranslateInstance(tx,
    				 * ty)); cs.transform(Matrix.getRotateInstance(Math.toRadians(90), 0, 0));
    				 * cs.transform(Matrix.getTranslateInstance(-tx, -ty)); cs.close(); File file =
    				 * new File(JasperService.class.getResource("/").getPath()+ "file/",
    				 * "IRJET_Copy_Right_form-rotated-center-scale.pdf"); if(!file.exists()) {
    				 * //file.createNewFile(); } document.save(new File(
    				 * "/home/peterwong/svn/Microservices/labelService/trunk/main_body/src_codes/src/elsa-label-service/target/classes/files",
    				 * "IRJET_Copy_Right_form-rotated-center-scale.pdf"));
    				 */
    				PDFRenderer pdfRenderer = new PDFRenderer(document);
    
    				int numberOfPages = document.getNumberOfPages();
    				//log.info("Total files to be converting -> " + numberOfPages);
    
    				String fileName = sourceFile.getName();
    				/*
    				 * 600 dpi give good image clarity but size of each image is 2x times of 300
    				 * dpi. Ex: 1. For 300dpi 04-Request-Headers_2.png expected size is 797 KB 2.
    				 * For 600dpi 04-Request-Headers_2.png expected size is 2.42 MB
    				 */
    				int dpi = 203;// use less dpi for to save more space in harddisk. For professional usage you
    								// can use more than 300dpi
    
    				// for (int i = 0; i < numberOfPages; ++i) {
    				
    				File imageFile = new File( pdfPath.replace("pdf", "png"));
    				 
    				//
    				BufferedImage bImage = pdfRenderer.renderImageWithDPI(0, dpi, ImageType.RGB);
    				if (isRotate) {
    					// 旋转图片90度
    					bImage = RotateImage.Rotate(bImage, 90);
    				}
    				// ImageIO.write(des1, fileExtension, imageFile);
    				ZPLConveterUtils zplConveterUtils = new ZPLConveterUtils();
    				String zplStr = zplConveterUtils.convertfromImg(bImage);
    				zplStr = zplStr.replace("
    ", "");
    				log.info("zpl is {}",zplStr);
    				String zplFilePath = pdfPath.replace("pdf", "txt");
    				FileUtils.writeToFile(zplStr, zplFilePath);
    
    				
    
    				// }
    				// System.out.println("convertfromiMg "+ convertfromImg);
    				//是否将数据发送到打印机,ULHKG_LP4X1 是label 打印机
    				//ServerPrintService.print("ULHKG_LP4X1", zplStr, null,null);
    				// ImageIO.write(bImage, fileExtension, outPutFile);
    
    
    				/*
    				 * Base64 base64 = new Base64();
    				 * 
    				 * // Decode encoded ZPL to a normal format String convertedZPL = new
    				 * String(base64.decode(zpl.getBytes()));
    				 */
    				// System.out.println(convertedZPL);
    				return zplStr;
    			} else {
    				log.error("generate pdf failed");
    			}
    			
    		} catch (Exception e) {
    			log.error("e is {}", e);
    		} finally {
    			try {
    				if (document != null) {
    					document.close();
    				}
    			} catch (IOException e) {
    				log.error("close stram failed,the exception is {}", e);
    			}
    		}
    		
    		return "";
    	}
    
    }
    
    
    
    //test
    import org.junit.Test;
    
    import com.icil.elsa.label.common.utils.FileUtils;
    import com.icil.elsa.label.common.utils.ZPLConveterUtils;
    
    public class ZPLUtils {
    	
    	
    	@Test
    	public void test() {
    		String pdfPath = "/home/zhangsan/Pictures/API_test_label.pdf";
    		String fileDataString = ZPLConveterUtils.convertPDFToZPL(pdfPath, false);
    		FileUtils.writeToFile(fileDataString, "/home/zhangsan/Pictures/API_test_label.txt");
    		
    	}
    
    }
    
    
    
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  • 原文地址:https://www.cnblogs.com/wanthune/p/13346341.html
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