package com.project.common.utils.qrcode;
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import com.google.zxing.*;
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import com.google.zxing.client.j2se.MatrixToImageWriter;
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import com.google.zxing.common.BitMatrix;
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import com.google.zxing.common.HybridBinarizer;
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import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
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import javax.imageio.ImageIO;
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import java.awt.*;
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import java.awt.geom.RoundRectangle2D;
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import java.awt.image.BufferedImage;
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.util.HashMap;
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import java.util.Hashtable;
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import java.util.Map;
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public class QRCodeUtil {
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private static final String CHARSET = "utf-8";
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private static final String IMG_FORMAT_NAME = "PNG";
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private static final Integer QR_CODE_SIZE = 800;
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private static final Integer WIDTH = 200;
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private static final Integer HEIGHT = 200;
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private static BufferedImage createImage(String content, String imgPath, Boolean needCompress) throws WriterException, IOException {
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Hashtable<EncodeHintType, Object> ht = new Hashtable<EncodeHintType, Object>();
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ht.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
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ht.put(EncodeHintType.CHARACTER_SET, CHARSET);
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ht.put(EncodeHintType.MARGIN, 1);
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BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, QR_CODE_SIZE, QR_CODE_SIZE, ht);
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int height = bitMatrix.getHeight();
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int width = bitMatrix.getWidth();
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BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
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for (int i = 0; i < width; i++) {
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for (int j = 0; j < height; j++) {
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image.setRGB(i, j, bitMatrix.get(i,j) ? 0xFF000000 : 0xFFFFFFFF);
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}
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}
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if (imgPath == null || "".equals(imgPath)) {
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return image;
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}
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QRCodeUtil.insertImg(image, imgPath, needCompress);
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return image;
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}
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private static void insertImg(BufferedImage source, String imgPath, Boolean needCompress) throws IOException {
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File file = new File(imgPath);
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if (!file.exists()) {
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System.err.println("" + imgPath + " 该文件不存在！");
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throw new FileNotFoundException();
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}
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Image src = ImageIO.read(file);
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int width = src.getWidth(null);
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int height = src.getHeight(null);
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if (needCompress) {
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width = WIDTH;
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height = HEIGHT;
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Image image = src.getScaledInstance(width, height, Image.SCALE_SMOOTH);
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BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
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Graphics g = img.createGraphics();
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g.dispose();
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src = image;
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}
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Graphics2D graph = source.createGraphics();
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int x = (QR_CODE_SIZE - width) / 2;
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int y = (QR_CODE_SIZE - height) / 2;
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graph.drawImage(src, x, y, width, height, null);
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Shape shape = new RoundRectangle2D.Float(x, y, width, height, 6, 6);
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graph.setStroke(new BasicStroke(3f));
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graph.draw(shape);
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graph.dispose();
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}
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public static void encode(String content, String imgPath, String destPath, Boolean needCompress) throws IOException, WriterException, ClassNotFoundException {
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BufferedImage image = QRCodeUtil.createImage(content, imgPath, needCompress);
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mkdir(destPath);
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ImageIO.write(image, IMG_FORMAT_NAME, new File(destPath));
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}
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public static BufferedImage encode(String content, String imgPath, Boolean needCompress) throws IOException, WriterException, ClassNotFoundException {
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BufferedImage image = QRCodeUtil.createImage(content, imgPath, needCompress);
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return image;
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}
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public static void encode(String content, String imgPath, OutputStream outputStream, Boolean needCompress) throws IOException, WriterException, ClassNotFoundException {
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BufferedImage image = QRCodeUtil.createImage(content, imgPath, needCompress);
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ImageIO.write(image, IMG_FORMAT_NAME, outputStream);
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}
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public static void encode(String content, String destPath) throws ClassNotFoundException, IOException, WriterException {
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QRCodeUtil.encode(content, null, destPath, false);
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}
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public static void encode(String content, OutputStream outputStream) throws ClassNotFoundException, IOException, WriterException {
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QRCodeUtil.encode(content, null, outputStream, false);
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}
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public static String decode(File file) throws IOException, NotFoundException
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{
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BufferedImage image;
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image = ImageIO.read(file);
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if (image == null) {
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throw new IOException();
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}
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BufferedImageLuminanceSource source = new BufferedImageLuminanceSource(image);
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BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
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Result result;
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Hashtable<DecodeHintType, Object> ht = new Hashtable<DecodeHintType, Object>();
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ht.put(DecodeHintType.CHARACTER_SET, CHARSET);
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result = new MultiFormatReader().decode(bitmap, ht);
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return result.getText();
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}
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public static String decode(String path) throws IOException, NotFoundException {
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return QRCodeUtil.decode(new File(path));
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}
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private static void mkdir(String destPath) {
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File file = new File(destPath);
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if (!file.exists() && !file.isDirectory()) {
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file.mkdirs();
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}
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}
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//二维码图上带字
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public static void contextLoads2(String content, String name, String filePathStr)
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{
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int qrCodeWidth = 700;
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int qrCodeHeight = 700;
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int textPadding = 5; // 文本与二维码之间的间距
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int textSize = 30; // 文本字体大小
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int totalHeight = qrCodeHeight + 300;
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try {
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// 生成二维码的BitMatrix
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BitMatrix bitMatrix = generateQRCode(content, qrCodeWidth, qrCodeHeight);
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// 将BitMatrix转换为BufferedImage
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BufferedImage qrCodeImage = MatrixToImageWriter.toBufferedImage(bitMatrix);
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// 创建一个新的BufferedImage来容纳二维码和文本
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BufferedImage combinedImage = new BufferedImage(
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qrCodeWidth, 900, BufferedImage.TYPE_INT_RGB);
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// 绘制二维码到新的BufferedImage上
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Graphics2D g2d = combinedImage.createGraphics();
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g2d.setColor(Color.WHITE);
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g2d.fillRect(0, 0, qrCodeWidth, 900);
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g2d.drawImage(qrCodeImage, 0, 0, null);
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// 设置文本样式
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Font font = new Font("BLACK", Font.PLAIN, textSize);
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g2d.setFont(font);
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g2d.setColor(Color.BLACK); // 文本颜色
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// 绘制文本到图片下方
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FontMetrics metrics = g2d.getFontMetrics();
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int textX = (qrCodeWidth - metrics.stringWidth("沈丘惠企执法")) / 2;
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int textX1 = (qrCodeWidth - metrics.stringWidth(name)) / 2;
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int textY = qrCodeHeight + textPadding;
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g2d.drawString("沈丘惠企执法", textX, textY);
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g2d.drawString(name, textX1, textY+50);
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g2d.dispose();
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// 指定存储图片的路径
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Path filePath = Paths.get(filePathStr);
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// 确保文件路径的父目录存在
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filePath.getParent().toFile().mkdirs();
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// 保存图片到文件
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ImageIO.write(combinedImage, "PNG", filePath.toFile());
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System.out.println("QR Code with text has been generated: " + filePath.toAbsolutePath());
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} catch (WriterException | IOException e) {
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e.printStackTrace();
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}
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}
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private static BitMatrix generateQRCode(String text, int width, int height) throws WriterException
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{
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Map<EncodeHintType, Object> hints = new HashMap<>();
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hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
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return new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height, hints);
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}
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}
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