解决方案：

pom引入

<dependency>
  <groupId>com.google.zxing</groupId>
  <artifactId>core</artifactId>
  <version>3.4.1</version>
</dependency>

<dependency>
  <groupId>com.google.zxing</groupId>
  <artifactId>javase</artifactId>
  <version>3.4.1</version>
</dependency>

1. 生成二维码

    @Test
    void test() {
        int width = 300;
        int hight = 300;
        String format = "png";
        String content = "测试Demo";
        // 定义二维码参数
        HashMap<EncodeHintType, Object> map = new HashMap<>();
        map.put(EncodeHintType.CHARACTER_SET, "utf-8");
        map.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
        map.put(EncodeHintType.MARGIN, 2);
        try {
            BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, hight, map);
            Path file = new File("D:\\image.png").toPath();
            MatrixToImageWriter.writeToPath(bitMatrix, format, file);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

2. 读取二维码

@Test
    void test() {
        MultiFormatReader multiFormatReader = new MultiFormatReader();
        File file = new File("D:\\image.png");
        try {
            BufferedImage image = ImageIO.read(file);
            LuminanceSource luminanceSource = new BufferedImageLuminanceSource(image);
            Binarizer binarizer = new HybridBinarizer(luminanceSource);
            BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);
            // 定义二维码参数
            Map<DecodeHintType, Object> hints = new HashMap<>();
            hints.put(DecodeHintType.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());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }