使用zxing生成和读取QRCode二维码_zixing 用法

1.maven依赖

<!-- https://mvnrepository.com/artifact/com.google.zxing/core -->
		<dependency>
			<groupId>com.google.zxing</groupId>
			<artifactId>core</artifactId>
			<version>3.3.0</version>
		</dependency>
 
		<!-- https://mvnrepository.com/artifact/com.google.zxing/javase -->
		<dependency>
			<groupId>com.google.zxing</groupId>
			<artifactId>javase</artifactId>
			<version>3.3.0</version>
		</dependency>

public static void main(String[] args) throws WriterException, IOException {
        int width = 300;
        int height = 300;
        String format = "png";
        String contents = "http://www.baidu.com" ;
 
        //定义二维码参数
        Map<EncodeHintType, Object> hints = new HashMap<>();
        hints.put(EncodeHintType.CHARACTER_SET,"UTF-8");
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
        hints.put(EncodeHintType.MARGIN,2);
 
        BitMatrix bitMatrix = new MultiFormatWriter().encode(contents, BarcodeFormat.QR_CODE,width,height,hints);
        Path file = new File("D:/imooc.png").toPath();
        MatrixToImageWriter.writeToPath(bitMatrix,format,file);
    }

public static void main(String[] args) throws IOException, NotFoundException {
        MultiFormatReader multiFormatReader = new MultiFormatReader();
 
        File file = new File("E:/alipay1.png");
        BufferedImage bufferedImage = ImageIO.read(file);
        BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(bufferedImage)));
        Map hints = new HashMap<>();
        hints.put(EncodeHintType.CHARACTER_SET,"UTF-8");
        Result result = multiFormatReader.decode(binaryBitmap,hints);
        System.out.println(result.toString());
        System.out.println(result.getBarcodeFormat());
        System.out.println(result.getText());
    }