zxing 生成二维码

来源：互联网发布：godaddy域名转出万网编辑：程序博客网时间：2024/06/17 03:09

一、zxing介绍

　　zxing是google提供生成、解析一维码、二维码的开源库。

二、使用

2.1 maven pom 配置

    <dependency>        <groupId>com.google.zxing</groupId>        <artifactId>core</artifactId>        <version>3.0.0</version>    </dependency>    <dependency>        <groupId>com.google.zxing</groupId>        <artifactId>javase</artifactId>        <version>3.0.0</version>    </dependency>

2.2 二维码生成

      /**     * 编码     *      * @param contents     * @param width     * @param height     * @param imgPath     */    public static void encode(String contents, int width, int height, String imgPath) {        try {            BitMatrix bitMatrix = new MultiFormatWriter().encode(contents, BarcodeFormat.QR_CODE, width, height);            MatrixToImageWriter.writeToFile(bitMatrix, "png", new File(imgPath));        } catch (Exception e) {            e.printStackTrace();        }    }

    /**      * @param args      */      public static void main(String[] args) {          String imgPath = "/Users/xupengwei/tool/yuanmeng/zxing.png";          String contents = "http://taobao.com";          int width = 300, height = 300;          QrCode.encode(contents, width, height, imgPath);      }

结果

2.3 二维码解码

    /**     * @param imgPath     * @return String     */    public static String decode(String imgPath) {        BufferedImage image = null;        Result result = null;        try {            image = ImageIO.read(new File(imgPath));            LuminanceSource source = new BufferedImageLuminanceSource(image);            BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));            result = new MultiFormatReader().decode(bitmap);            return result.getText();        } catch (Exception e) {            e.printStackTrace();        }        return null;    }

    public static void main(String[] args) {                String imgPath = "/Users/xupengwei/tool/yuanmeng/zxing.png";          String decodeContent = QrCode.decode(imgPath);          System.out.println(decodeContent);      }

结果：

http://taobao.com

三、参考文献

1、https://github.com/zxing/zxing

2、API 文档： https://zxing.github.io/zxing/apidocs/

0 0