ロゴは、公共の恒久的な2次元コードの数を取得し、アリOSSにアップロード

思考

最初の永久マイクロチャネルの二次元コードを取得し、
ステップ2次元コード分析情報、
第三工程：新しい2次元コードの合成
ステップ4：二次元コードは、OSSサーバにアップロード

コード

 String result = HttpUtils.doPost("https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token="+matoken.getToken(),JSONObject.toJSONString(jsonObject));
 String ticket = JSONObject.parseObject(result).getString("ticket");   
 String qrContent = QrCodeUtils.decode("https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket="+ticket);  
 url=QrCodeUtils.encode(qrContent,userDto.getIconUrl(),true);      

デコード方法

public static String decode(String imgUrl)  {
        String resultStr="";
        try {
            URL url = new URL(imgUrl);
            BufferedImage image = ImageIO.read(url);
            if (image == null) {
                return null;
            }
            BufferedImageLuminanceSource source = new BufferedImageLuminanceSource(image);
            BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
            Result result;
            Hashtable hints = new Hashtable();
            hints.put(DecodeHintType.CHARACTER_SET, “UTF-8”);
            result = new MultiFormatReader().decode(bitmap, hints);
            resultStr = result.getText();
        }catch (Exception e){
            e.printStackTrace();
        }

        return resultStr;
    }

エンコード方法

  public static String encode(String content, String imgUrl,  boolean needCompress) {
        String url = "";
        try {
            BufferedImage image = QrCodeUtils.createImage(content, imgUrl,needCompress); 
            ByteArrayOutputStream out = new ByteArrayOutputStream();
            ImageIO.write(image,"png", out);
            url= Upload.upLoadOssByBytes(out.toByteArray(),"png");

        }catch (Exception e){
            e.printStackTrace();
        }
        return url;
    }

二次元コードの合成

private static BufferedImage createImage(String content, String imgPath,boolean needCompress) throws Exception {
        Hashtable hints = new Hashtable();
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
        hints.put(EncodeHintType.CHARACTER_SET, CHARSET);
        hints.put(EncodeHintType.MARGIN, 4);  
        BitMatrix bitMatrix = new MultiFormatWriter().encode(content,BarcodeFormat.QR_CODE, QRCODE_SIZE, QRCODE_SIZE, hints);
        int width = bitMatrix.getWidth();
        int height = bitMatrix.getHeight();
        BufferedImage image = new BufferedImage(width, height,BufferedImage.TYPE_INT_RGB);
        for (int x = 0; x < width; x++) {
            for (int y = 0; y < height; y++) {
                image.setRGB(x, y, bitMatrix.get(x, y) ? 0xFF000000: 0xFFFFFFFF);
            }
        }
        if (imgPath == null || "".equals(imgPath)) {
            return image; 
        } 
        URL url = new URL(imgUrl);
        Image src = ImageIO.read(url);
        int width = src.getWidth(null);
        int height = src.getHeight(null);
        if (needCompress) {  
            if (width > WIDTH) { 
                width = WIDTH;
            }
            if (height > HEIGHT) { 
                height = HEIGHT;
            }
            Image image = src.getScaledInstance(width, height,Image.SCALE_SMOOTH);
            BufferedImage tag = new BufferedImage(width, height,BufferedImage.TYPE_INT_RGB);
            Graphics g = tag.getGraphics();
            g.drawImage(image, 0, 0, null);  
            g.dispose();
            src = image;
        }
        // 插入LOGO
        Graphics2D graph = source.createGraphics();
        int x = (QRCODE_SIZE - width) / 2;
        int y = (QRCODE_SIZE - height) / 2;
        graph.drawImage(src, x, y, width, height, null);
        Shape shape = new RoundRectangle2D.Float(x, y, width, width, 6, 6);
        graph.setStroke(new BasicStroke(3f));
        graph.draw(shape);
        graph.dispose();
        return image;
    }

アップロードOSSサーバ

public static String upLoadOssByBytes(byte[] bytes,String suffixName){
        String name = UUID.randomUUID().toString();
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
        try { 
            ossClient.putObject("ssp-img", name+"."+suffixName, new ByteArrayInputStream(bytes));
            ossClient.shutdown();
        }catch (Exception e){
            ossClient.shutdown();
        }
        return ossUrl+"/"+name+"."+suffixName;

    }

終わり！！！！