Category: Java

<dependencies>
  <!-- ZXing for QR-Code Generation -->
  <!-- https://mvnrepository.com/artifact/com.google.zxing/core -->
  <dependency>
    <groupId>com.google.zxing</groupId>
    <artifactId>core</artifactId>
    <version>3.5.1</version>
  </dependency>
  <!-- https://mvnrepository.com/artifact/com.google.zxing/javase -->
  <dependency>
    <groupId>com.google.zxing</groupId>
    <artifactId>javase</artifactId>
    <version>3.5.1</version>
  </dependency>
</dependencies>

package deringo;

import java.awt.Desktop;
import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.HashMap;
import java.util.Map;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.NotFoundException;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

public class TestMain {

    public static void main(String args[]) throws WriterException, IOException, NotFoundException {
        String data = "Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam";
        Path path = Paths.get("./test.png");
        // Encoding charset to be used
        String charset = "UTF-8";
        Map<EncodeHintType, ErrorCorrectionLevel> hashMap = new HashMap<EncodeHintType, ErrorCorrectionLevel>();
        // generates QR code with Low level(L) error correction capability
        hashMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
        // invoking the user-defined method that creates the QR code
        generateQRcode(data, path, charset, hashMap, 200, 200);// increase or decrease height and width accodingly

        System.out.println("QR Code created successfully.");
        Desktop.getDesktop().open(path.toFile());
    }

    public static void generateQRcode(String data, Path path, String charset, Map<EncodeHintType, ErrorCorrectionLevel> map, int h, int w)
            throws WriterException, IOException {
        BitMatrix matrix = new MultiFormatWriter().encode(new String(data.getBytes(charset), charset),
                BarcodeFormat.QR_CODE, w, h);
        MatrixToImageWriter.writeToPath(matrix, getExtension(path), path);
    }
    
    /**
     * Own function until we have this in JDK<br>
     * Finally, there is a new method Path#getExtension available right in the JDK as of Java 21:<br>
     * https://stackoverflow.com/questions/3571223/how-do-i-get-the-file-extension-of-a-file-in-java/74315488#74315488
     */
    public static String getExtension(Path path) {
        String extension = path.getFileName().toString().substring(path.getFileName().toString().lastIndexOf('.') + 1);
        return extension;
    }
}

package deringo;

import java.awt.Desktop;
import java.io.File;
import java.nio.file.Files;

import org.docx4j.dml.wordprocessingDrawing.Inline;
import org.docx4j.openpackaging.packages.WordprocessingMLPackage;
import org.docx4j.openpackaging.parts.WordprocessingML.BinaryPartAbstractImage;
import org.docx4j.openpackaging.parts.WordprocessingML.MainDocumentPart;
import org.docx4j.wml.Drawing;
import org.docx4j.wml.Jc;
import org.docx4j.wml.JcEnumeration;
import org.docx4j.wml.ObjectFactory;
import org.docx4j.wml.P;
import org.docx4j.wml.PPr;
import org.docx4j.wml.R;

public class TestMain {

    public static void main(String[] args) throws Exception {
        WordprocessingMLPackage wordPackage = WordprocessingMLPackage.createPackage();
        MainDocumentPart mainDocumentPart = wordPackage.getMainDocumentPart();
        mainDocumentPart.addStyledParagraphOfText("Title", "Welcome to my QR Code");
        mainDocumentPart.addParagraphOfText("Welcome to my QR Code");
        
        File image = new File("test.png" );
        byte[] fileContent = Files.readAllBytes(image.toPath());
        BinaryPartAbstractImage imagePart = BinaryPartAbstractImage
          .createImagePart(wordPackage, fileContent);
        Inline inline = imagePart.createImageInline(
          "QR Code Image (filename hint)", "Alt Text", 1, 2, false);
        P Imageparagraph = addImageToParagraph(inline);
        mainDocumentPart.getContent().add(Imageparagraph);
        
        File exportFile = new File("welcome.docx");
        wordPackage.save(exportFile);
        
        Desktop.getDesktop().open(exportFile);
    }
    
    private static P addImageToParagraph(Inline inline) {
        ObjectFactory factory = new ObjectFactory();
        P p = factory.createP();
        R r = factory.createR();
        p.getContent().add(r);
        Drawing drawing = factory.createDrawing();
        r.getContent().add(drawing);
        drawing.getAnchorOrInline().add(inline);
        // center image
        PPr paragraphProperties = factory.createPPr();
        Jc justification = factory.createJc();
        justification.setVal(JcEnumeration.CENTER);
        paragraphProperties.setJc(justification);
        p.setPPr(paragraphProperties);
        
        return p;
    }
}

package deringo;

import java.awt.Desktop;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.util.HashMap;
import java.util.Map;

import javax.imageio.ImageIO;

import org.docx4j.dml.wordprocessingDrawing.Inline;
import org.docx4j.openpackaging.packages.WordprocessingMLPackage;
import org.docx4j.openpackaging.parts.WordprocessingML.BinaryPartAbstractImage;
import org.docx4j.openpackaging.parts.WordprocessingML.MainDocumentPart;
import org.docx4j.wml.Drawing;
import org.docx4j.wml.Jc;
import org.docx4j.wml.JcEnumeration;
import org.docx4j.wml.ObjectFactory;
import org.docx4j.wml.P;
import org.docx4j.wml.PPr;
import org.docx4j.wml.R;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

public class TestMain {

    public static void main(String[] args) throws Exception {
        WordprocessingMLPackage wordPackage = WordprocessingMLPackage.createPackage();
        MainDocumentPart mainDocumentPart = wordPackage.getMainDocumentPart();
        mainDocumentPart.addStyledParagraphOfText("Title", "Welcome to my QR Code");
        mainDocumentPart.addParagraphOfText("Welcome to my QR Code");
        
        BinaryPartAbstractImage imagePart = BinaryPartAbstractImage
                .createImagePart(wordPackage, getQRCode());
        
        Inline inline = imagePart.createImageInline(
          "QR Code Image (filename hint)", "Alt Text", 1, 2, false);
        P Imageparagraph = addImageToParagraph(inline);
        mainDocumentPart.getContent().add(Imageparagraph);
        
        File exportFile = new File("welcome.docx");
        wordPackage.save(exportFile);
        
        Desktop.getDesktop().open(exportFile);
    }
    
    private static P addImageToParagraph(Inline inline) {
        ObjectFactory factory = new ObjectFactory();
        P p = factory.createP();
        R r = factory.createR();
        p.getContent().add(r);
        Drawing drawing = factory.createDrawing();
        r.getContent().add(drawing);
        drawing.getAnchorOrInline().add(inline);
        // center image
        PPr paragraphProperties = factory.createPPr();
        Jc justification = factory.createJc();
        justification.setVal(JcEnumeration.CENTER);
        paragraphProperties.setJc(justification);
        p.setPPr(paragraphProperties);
        
        return p;
    }
    
    public static byte[] getQRCode() throws Exception {
        String data = "Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam";
        // Encoding charset to be used
        String charset = "UTF-8";
        Map<EncodeHintType, ErrorCorrectionLevel> hashMap = new HashMap<EncodeHintType, ErrorCorrectionLevel>();
        // generates QR code with Low level(L) error correction capability
        hashMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
     
        BitMatrix matrix = new MultiFormatWriter().encode(new String(data.getBytes(charset), charset),
                BarcodeFormat.QR_CODE, 200, 200);
        BufferedImage bi = MatrixToImageWriter.toBufferedImage(matrix);
        
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ImageIO.write(bi, "png", baos);
        byte[] bytes = baos.toByteArray();
        return bytes;
    }
}