Java 制作二维码

最近刷题遇到了java制作二维码的功能

pom文件

    <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>

Java代码

  public static void main(String[] args) {
        String binaryString = "111111101010001111111\n" +
                "100000100111001000001\n" +
                "101110100010001011101\n" +
                "101110100111101011101\n" +
                "101110100100101011101\n" +
                "100000100011001000001\n" +
                "111111101010101111111\n" +
                "000000001001000000000\n" +
                "110110100111101000001\n" +
                "010001010111011011110\n" +
                "100100101010000000010\n" +
                "100101001110101100000\n" +
                "111101101010111010111\n" +
                "000000001111001111111\n" +
                "111111100000111001000\n" +
                "100000100001001111100\n" +
                "101110101010111000100\n" +
                "101110101110010110110\n" +
                "101110100111010100011\n" +
                "100000101010000010100\n" +
                "111111101101111010100";

        // 去除换行符并分割成二维数组
        String[] lines = binaryString.split("\n");
        int width = lines[0].length();
        int height = lines.length;

        // 创建BufferedImage
        BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);

        // 填充图像
        for (int y = 0; y < height; y++) {
            for (int x = 0; x < width; x++) {
                char c = lines[y].charAt(x);
                if (c == '1') {
                    image.setRGB(x, y, Color.BLACK.getRGB());
                } else if (c == '0') {
                    image.setRGB(x, y, Color.WHITE.getRGB());
                }
            }
        }

        // 保存图像
        try {
            File output = new File("C:\\Users\\Administrator\\Desktop\\QRCode.png");
            ImageIO.write(image, "png", output);
            System.out.println("图像已生成并保存为 binary_image.png");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }