Java利用Zxing生成二維碼(Domino也適用)

1、Zxing是Google提供的關(guān)于條碼（一維碼、二維碼）的解析工具，提供了二維碼的生成與解析的方法，現(xiàn)在我簡(jiǎn)單介紹一下使用Java利用Zxing生成與解析二維碼Jar包下載：/question/tag/zxing1、二維碼的生成1.1 將Zxing-core.jar 包加入到classpath下（如果是Domino平臺(tái)，請(qǐng)參考本人的文庫(kù)：/view/e09bd825b7?fr=prin）。1.2 二維碼的生成需要借助MatrixToImageWriter類，該類是由Google提供的，可以將該類拷貝到源碼中，這

2、里我將該類的源碼貼上，可以直接使用。import mon.BitMatrix; import javax.imageio.ImageIO; import java.io.File; import java.io.OutputStream; import java.io.IOException; import java.awt.image.BufferedImage; public final class MatrixToImageWriter private static final int BLACK = 0xFF; private static fi

3、nal int WHITE = 0xFFFFFFFF; private MatrixToImageWriter() public static BufferedImage toBufferedImage(BitMatrix matrix) int width = matrix.getWidth(); int height = matrix.getHeight(); BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); for (int x = 0; x width; x+) for

4、 (int y = 0; y sourceWidth | top + height sourceHeight) throw new IllegalArgumentException(Crop rectangle does not fit within image data.); for (int y = top; y top + height; y+) for (int x = left; x left + width; x+) if (image.getRGB(x, y) & 0xFF) = 0) image.setRGB(x, y, 0xFFFFFFFF); / = white this.

5、image = new BufferedImage(sourceWidth, sourceHeight, BufferedImage.TYPE_BYTE_GRAY); this.image.getGraphics().drawImage(image, 0, 0, null); this.left = left; this.top = top; Override public byte getRow(int y, byte row) if (y = getHeight() throw new IllegalArgumentException(Requested row is outside th

6、e image: + y); int width = getWidth(); if (row = null | row.length width) row = new bytewidth; image.getRaster().getDataElements(left, top + y, width, 1, row); return row; Override public byte getMatrix() int width = getWidth(); int height = getHeight(); int area = width * height; byte matrix = new

7、bytearea; image.getRaster().getDataElements(left, top, width, height, matrix); return matrix; Override public boolean isCropSupported() return true; Override public LuminanceSource crop(int left, int top, int width, int height) return new BufferedImageLuminanceSource(image, this.left + left, this.to

8、p + top, width, height); Override public boolean isRotateSupported() return true; Override public LuminanceSource rotateCounterClockwise() int sourceWidth = image.getWidth(); int sourceHeight = image.getHeight(); AffineTransform transform = new AffineTransform(0.0, -1.0, 1.0, 0.0, 0.0, sourceWidth);

9、 BufferedImage rotatedImage = new BufferedImage(sourceHeight, sourceWidth, BufferedImage.TYPE_BYTE_GRAY); Graphics2D g = rotatedImage.createGraphics(); g.drawImage(image, transform, null); g.dispose(); int width = getWidth(); return new BufferedImageLuminanceSource(rotatedImage, top, sourceWidth - (

10、left + width), getHeight(), width); 2.3 編寫(xiě)解析二維碼的實(shí)現(xiàn)代碼try MultiFormatReader formatReader = new MultiFormatReader(); String filePath = C:/Users/Administrator/Desktop/testImage/test.jpg; File file = new File(filePath); BufferedImage image = ImageIO.read(file); LuminanceSource source = new BufferedImageL

11、uminanceSource(image); Binarizer binarizer = new HybridBinarizer(source); BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer); Map hints = new HashMap(); hints.put(EncodeHintType.CHARACTER_SET, UTF-8); Result result = formatReader.decode(binaryBitmap,hints); System.out.println(result = + result.toString(); System.out.println(resultFormat = + result.getBarcodeFormat(); System.out.println(resultText = + result.getText(); catch (Exception e) e.pri