QRCodeUtil工具类优化

joying-common/src/main/java/com/fzm/common/utils/QRCodeUtil.java

 package com.fzm.common.utils;
 
-import com.fzm.common.model.BufferedImageLuminanceSource;
-import com.google.zxing.*;
+import com.google.zxing.BarcodeFormat;
+import com.google.zxing.EncodeHintType;
+import com.google.zxing.MultiFormatWriter;
 import com.google.zxing.common.BitMatrix;
-import com.google.zxing.common.HybridBinarizer;
 import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
 
 import javax.imageio.ImageIO;
-import java.awt.*;
-import java.awt.geom.RoundRectangle2D;
 import java.awt.image.BufferedImage;
 import java.io.ByteArrayOutputStream;
-import java.io.File;
-import java.io.IOException;
-import java.io.OutputStream;
+import java.nio.charset.StandardCharsets;
 import java.util.Base64;
-import java.util.Hashtable;
+import java.util.HashMap;
+import java.util.Map;
 
 public class QRCodeUtil {
-    private static final String CHARSET = "utf-8";
-    private static final String FORMAT_NAME = "JPG";
-    // 二维码尺寸
     private static final int QRCODE_SIZE = 300;
-    // LOGO宽度
-    private static final int WIDTH = 60;
-    // LOGO高度
-    private static final int HEIGHT = 60;
 
-    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, 1);
-        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;
-        }
-        // 插入图片
-        QRCodeUtil.insertImage(image, imgPath, needCompress);
-        return image;
-    }
+    private static final Map<EncodeHintType, Object> hints = new HashMap<>();
 
-    private static void insertImage(BufferedImage source, String imgPath, boolean needCompress) throws Exception {
-        File file = new File(imgPath);
-        if (!file.exists()) {
-            System.err.println("" + imgPath + "   该文件不存在！");
-            return;
-        }
-        Image src = ImageIO.read(new File(imgPath));
-        int width = src.getWidth(null);
-        int height = src.getHeight(null);
-        if (needCompress) { // 压缩LOGO
-            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); // 绘制缩小后的图
-            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();
+    static {
+        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
+        hints.put(EncodeHintType.CHARACTER_SET, StandardCharsets.UTF_8);
+        hints.put(EncodeHintType.MARGIN, 2);
     }
 
     /**
      * @param content 二维码内容
-     * @param imgPath      嵌入二维码的图片路径
-     * @param needCompress 是否压缩
      * @return
-     * @throws Exception
      */
-    public static String encode(String content, String imgPath, boolean needCompress) throws Exception {
-        BufferedImage image = QRCodeUtil.createImage(content, imgPath, needCompress);
-        ByteArrayOutputStream baos = new ByteArrayOutputStream();//io流
-        try {
-            ImageIO.write(image, "png", baos);//写入流中
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-        byte[] bytes = baos.toByteArray();//转换成字节
-
-        String png_base64 = Base64.getEncoder().encodeToString(bytes);//转换成base64串
+    public static String encode(String content) {
+        try (ByteArrayOutputStream out = new ByteArrayOutputStream()) {
+            BufferedImage image = QRCodeUtil.createImage(content);
+            ImageIO.write(image, "png", out);
+            byte[] bytes = out.toByteArray();
+            String png_base64 = Base64.getEncoder().encodeToString(bytes);
 
             return "data:image/jpg;base64," + png_base64;
-
-    }
-
-    // 被注释的方法
-    /*
-     * public static void encode(String content, String destPath, boolean
-     * needCompress) throws Exception { QRCodeUtil.encode(content, null, destPath,
-     * needCompress); }
-     */
-
-    public static void encode(String content) throws Exception {
-        QRCodeUtil.encode(content, null, false);
-    }
-
-    public static void encode(String content, String imgPath, OutputStream output, boolean needCompress)
-            throws Exception {
-        BufferedImage image = QRCodeUtil.createImage(content, imgPath, needCompress);
-        ImageIO.write(image, FORMAT_NAME, output);
+        } catch (Exception e) {
+            return null;
         }
-
-    public static void encode(String content, OutputStream output) throws Exception {
-        QRCodeUtil.encode(content, null, output, false);
     }
 
-    public static String decode(File file) throws Exception {
-        BufferedImage image;
-        image = ImageIO.read(file);
-        if (image == null) {
-            return null;
+    private static BufferedImage createImage(String content) throws Exception {
+        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);
             }
-        BufferedImageLuminanceSource source = new BufferedImageLuminanceSource(image);
-        BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
-        Result result;
-        Hashtable hints = new Hashtable();
-        hints.put(DecodeHintType.CHARACTER_SET, CHARSET);
-        result = new MultiFormatReader().decode(bitmap, hints);
-        String resultStr = result.getText();
-        return resultStr;
         }
-
-    public static String decode(String path) throws Exception {
-        return QRCodeUtil.decode(new File(path));
+        return image;
     }
-
 }
\ No newline at end of file

joying-portal/src/main/java/com/fzm/portal/controller/NftController.java

@@ -104,7 +104,7 @@ public class NftController {
         qrCodeMap.put("nickname", user.getNickname());
         qrCodeMap.put("avatar", user.getAvatar());
         qrCodeMap.put("wallet", user.getWallet());
-        String qrCode = QRCodeUtil.encode(JsonUtil.toJson(qrCodeMap), null, false);
+        String qrCode = QRCodeUtil.encode(JsonUtil.toJson(qrCodeMap));
         HashMap<String, Object> result = new HashMap<>(8);
         result.put("list", list);
         result.put("size", list.size());