Generate QR code and QR code generator

Generate QR code and QR code generator

1. Use the zxing provided by google to generate a QR code without a logo

Public static void main (String [] args) {try {// String contet = "http://izhongwei.github.io/blog/index.html"; // QR code generation path String path = "E :"; multiFormatWriter multiFormatWriter = new MultiFormatWriter (); Map hints = new HashMap (); hints. put (EncodeHintType. CHARACTER_SET, "UTF-8"); BitMatrix bitMatrix = multiFormatWriter. encode (contet, BarcodeFormat. QR_CODE, 400,400, hints); // generate the QR code size File = new file (path, "test.jpg"); // generate the image path and name ImageWrite after the QR code is generated. writeToFile (bitMatrix, "jpg", file); // you need the ImageWrite class to generate the image System. out. println ("the QR code has been generated");} catch (Exception e) {e. printStackTrace ();}}

After running the main method:

2. Use google's zxing to generate a QR code containing the logo

Introduction:

In the QEcodeUtil. java class:

Package com. able. barcode; import java. awt. basicStroke; import java. awt. graphics; import java. awt. graphics2D; import java. awt. image; import java. awt. shape; import java. awt. geom. roundRectangle2D; import java. awt. image. bufferedImage; import java. io. file; import java. io. outputStream; import java. util. hashtable; import java. util. random; import javax. imageio. imageIO; import com. google. zxing. barcodeFormat; import com. g Oogle. zxing. binaryBitmap; import com. google. zxing. decodeHintType; import com. google. zxing. encodeHintType; import com. google. zxing. multiFormatReader; import com. google. zxing. multiFormatWriter; import com. google. zxing. result; import com. google. zxing. common. bitMatrix; import com. google. zxing. common. hybridBinarizer; import com. google. zxing. qrcode. decoder. errorCorrectionLevel;/***** @ author Xia Zhongwei * QR code tool class */publ Ic class QRCodeUtil {private static final String CHARSET = "UTF-8"; private static final String FORMAT_NAME = "JPG"; // two-dimensional code size private static final int QRCODE_SIZE = 300; // logo width private static final int WIDTH = 80; // logo height private static final int HEIGHT = 80; private static BufferedImage createImage (String content, String imgPath, boolean needCompress) throws Exception {Hashtable <EncodeHintType, Objec T> hints = new Hashtable <EncodeHintType, Object> (); hints. put (EncodeHintType. ERROR_CORRECTION, ErrorCorrectionLevel. h); hints. put (EncodeHintType. CHARACTER_SET, CHARSET); hints. put (EncodeHintType. MARGIN, 1); BitMatrix bitMatrix = new MultiFormatWriter (). encode (content, BarcodeFormat. QR_CODE, QRCODE_SIZE, QRCODE_SIZE, hints); int width = bitMatrix. getWidth (); int height = bitMatrix. getHeight (); BufferedImag E image = new BufferedImage (width, height, BufferedImage. TYPE_INT_RGB); for (int x = 0; x <width; x ++) {for (int y = 0; y 
The QR code generated after running the main method:

3. Use Jquery. qrcode to generate a QR code
Download project usage:

Code download: https://github.com/izhongwei/two-dimemensionCode