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Thread: QR Code qzestion

  1. #1
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    Default QR Code qzestion

    hello
    ¸im writing program for read and write QR code in netBeans 8.2 . I use library zxing core-3.3.0.jar and zxing javase-3.3.0.jar
    how I make that write Č,Š Ž (ISO-8859-2) charset in QR Code

    // My imports:
    import javax.imageio.ImageIO;
    import com.google.zxing.BarcodeFormat;
    import com.google.zxing.EncodeHintType;
    import com.google.zxing.MultiFormatWriter;
    import com.google.zxing.WriterException;
    import com.google.zxing.client.j2se.MatrixToImageWriter;
    import com.google.zxing.common.BitMatrix;
    import com.google.zxing.qrcode.QRCodeWriter;
    import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
    import java.util.HashMap;
    import java.util.Map;
    import java.io.File;
    import java.util.HashMap;
    import java.util.Map;
    import com.google.zxing.EncodeHintType;
    import com.google.zxing.BarcodeFormat;
    import com.google.zxing.BinaryBitmap;
    import com.google.zxing.LuminanceSource;
    import com.google.zxing.MultiFormatReader;
    import com.google.zxing.MultiFormatWriter;
    import com.google.zxing.NotFoundException;
    import com.google.zxing.Result;
    import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
    import com.google.zxing.client.j2se.MatrixToImageWriter;
    import com.google.zxing.common.BitMatrix;
    import com.google.zxing.common.HybridBinarizer;
    import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
    import com.google.zxing.EncodeHintType;
    import java.nio.file.FileSystems;
    import java.nio.file.Path;
     
    //my code for writing QR code;
    public void pisi(){
             try{
                String qrCodeData = "česnja na trorti" ;
                String filePath = beseda2;
               String charset = "ISO-8859-2"; // or "ISO-8859-1"
                Map < EncodeHintType, ErrorCorrectionLevel > hintMap = new HashMap < EncodeHintType, ErrorCorrectionLevel > ();
                hintMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
                BitMatrix matrix = new MultiFormatWriter().encode(
                    new String(qrCodeData.getBytes(charset), charset),
                    BarcodeFormat.QR_CODE, 400, 400, hintMap);
                MatrixToImageWriter.writeToFile(matrix, filePath.substring(filePath
                    .lastIndexOf('.') + 1), new File(filePath));
                //System.out.println("QR koda je ustvarjena!");
            } catch (Exception e) {
               // System.err.println(e);
            }
         }

  2. #2
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    Default Re: QR Code qzestion

    Hello
    I find answer for my problem here
    https://stackoverflow.com/questions/...ng-using-zxing

  3. #3
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    Default Re: QR Code qzestion

    Hi, below is an alternative solution based on Free Spire.Barcode for Java. Hope it helps.

    import com.spire.barcode.BarCodeGenerator;
    import com.spire.barcode.BarCodeType;
    import com.spire.barcode.BarcodeSettings;
    import com.spire.barcode.QRCodeECL;
     
    import javax.imageio.ImageIO;
    import java.awt.image.BufferedImage;
    import java.io.File;
    import java.io.IOException;
     
    public class QRCode {
     
        public static void main(String[] args) throws IOException {
     
            //create an instance of BarcodeSettings
            BarcodeSettings settings = new BarcodeSettings();
            //set barcode type
            settings.setType(BarCodeType.QR_CODE);
            //set barcode data
            settings.setData("Č,Š Ž (ISO-8859-2)");
            //set dispaly text
            settings.setData2D("Č,Š Ž (ISO-8859-2)");
            //show text on bottom
            settings.setShowTextOnBottom(true);
            //set the border invisible
            settings.hasBorder(false);
            //set width of the barcode module
            settings.setX(2);
            //set the error correction level
            settings.setQRCodeECL(QRCodeECL.M);
            //create BarCodeGenerator object based on settings
            BarCodeGenerator barCodeGenerator = new BarCodeGenerator(settings);
            //generate image data and store in BufferedImage instance
            BufferedImage bufferedImage = barCodeGenerator.generateImage();
            //save to image
            ImageIO.write(bufferedImage,"png",new File("QR_CODE.png"));
            System.out.println("Complete!");
        }
    }

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