java生成中间带logo的二维码图片

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所需jar包:QRCode.jar

 

经过测试好用的一个生成二维码图片的方法:

 

/**

 

     *生成二维码(QRCode)图片

 

     *@paramcontent 二维码图片的内容

 

     *@paramimgPath生成二维码图片完整的路径

 

     *@paramccbpath  二维码图片中间的logo路径

 

     */ 

 

    publicstaticint createQRCode(String content, String imgPath,String ccbPath) { 

 

        try { 

 

            Qrcode qrcodeHandler = new Qrcode(); 

 

            qrcodeHandler.setQrcodeErrorCorrect('M'); 

 

            qrcodeHandler.setQrcodeEncodeMode('B'); 

 

            qrcodeHandler.setQrcodeVersion(7); 

 

 

 

            // System.out.println(content); 

 

            byte[] contentBytes = content.getBytes("gb2312"); 

 

            BufferedImage bufImg = new BufferedImage(140, 140, BufferedImage.TYPE_INT_RGB); 

 

            Graphics2D gs = bufImg.createGraphics(); 

 

 

 

            gs.setBackground(Color.WHITE); 

 

            gs.clearRect(0, 0, 140, 140); 

 

 

 

            // 设定图像颜色 > BLACK 

 

            gs.setColor(Color.BLACK); 

 

 

 

            // 设置偏移量 不设置可能导致解析出错 

 

            int pixoff = 2; 

 

            // 输出内容 > 二维码 

 

            if (contentBytes.length > 0 && contentBytes.length < 120) { 

 

                boolean[][] codeOut = qrcodeHandler.calQrcode(contentBytes); 

 

                for (int i = 0; i < codeOut.length; i++) { 

 

                    for (int j = 0; j < codeOut.length; j++) { 

 

                        if (codeOut[j][i]) { 

 

                            gs.fillRect(j * 3 + pixoff, i * 3 + pixoff, 3, 3); 

 

                        } 

 

                    } 

 

                } 

 

            } else { 

 

                System.err.println("QRCode content bytes length = " 

 

                        + contentBytes.length + " not in [ 0,120 ]. "); 

 

                return -1;

 

            } 

 

            Image img = ImageIO.read(new File(ccbPath));//实例化一个Image对象。

 

            gs.drawImage(img, 55, 55, null);

 

            gs.dispose(); 

 

            bufImg.flush(); 

 

 

 

            // 生成二维码QRCode图片 

 

            File imgFile = new File(imgPath); 

 

            ImageIO.write(bufImg, "png", imgFile); 

 

 

 

        } catch (Exception e)

 

        { 

 

            e.printStackTrace(); 

 

            return -100;

 

        } 

 

       

 

        return 0;

 

 

 

 

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