zxing解析生成一维码二维码

Posted 2020-11-24 yanan7890

@web界面实现扫一扫

二维码工具类

package util;

import java.awt.BasicStroke;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Shape;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URL;
import java.util.HashMap;
import java.util.Hashtable;

import javax.imageio.ImageIO;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.NotFoundException;
import com.google.zxing.Result;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

import net.sf.json.JSONObject;

/**
 * @todo 二维码工具
 * @author zhangyanan
 * @date 2018年8月6日
 */
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 = 200;
    // LOGO宽度
    private static final int WIDTH = 40;
    // LOGO高度
    private static final int HEIGHT = 40;

    public static void main(String[] args) throws Exception {
        create();
        // System.out.println(decoderQRCode("D:/8.jpg"));
        // System.out.println(decodeBarCode("D:/8.jpg"));
    }

    private static void create() throws Exception, FileNotFoundException {
        String dir = "E:/QR.jpg";
        String content = "微信提醒您：您的账户已被盗";// ConfigUtil.getProperty("project.url")
        String logoImgPath = "file:///taobao.jpg";// "http://192.168.100.2/cut.jpg";
        File file = new File(dir);
        QRCodeUtil.encode(content, logoImgPath, new FileOutputStream(file), true);
        System.out.println("生成二维码成功");
    }

    /**
     * @todo
     * @author zhangyanan
     * @date 2018年8月6日
     * @param content
     *            二维码内容
     * @param logoImgPath
     *            Logo
     * @param needCompress
     *            是否压缩Logo
     * @return 返回二维码图片
     * @throws WriterException
     * @throws IOException
     *             BufferedImage TODO 创建二维码图片
     */
    private static BufferedImage createImage(String content, String logoImgPath, boolean needCompress)
            throws WriterException, IOException {
        Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
        hints.put(EncodeHintType.CHARACTER_SET, CHARSET);
        hints.put(EncodeHintType.MARGIN, 0);
        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 (logoImgPath == null || "".equals(logoImgPath)) {
            return image;
        }

        // 插入图片
        QRCodeUtil.insertImage(image, logoImgPath, needCompress);
        return image;
    }

    /**
     * @todo
     * @author zhangyanan
     * @date 2018年8月6日
     * @param source
     *            二维码图片
     * @param logoImgPath
     *            Logo
     * @param needCompress
     *            是否压缩Logo
     * @throws IOException
     *             void TODO 添加Logo
     */
    private static void insertImage(BufferedImage source, String logoImgPath, boolean needCompress) throws IOException {
        /*
         * File file = new File(logoImgPath); if (!file.exists()) { return; }
         */
        URL url = new URL(logoImgPath);
        Image src;
        try {
            src = ImageIO.read(url.openStream());
        } catch (Exception e) {
            // TODO Auto-generated catch block
            // e.printStackTrace();
            return;
        }
        // Image src = ImageIO.read(new File(logoImgPath));
        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();
    }

    /**
     * @todo
     * @author zhangyanan
     * @date 2018年8月6日
     * @param content
     *            二维码内容
     * @param logoImgPath
     *            Logo
     * @param destPath
     *            二维码输出路径
     * @param needCompress
     *            是否压缩Logo
     * @throws Exception
     *             void TODO 生成带Logo的二维码
     */
    public static void encode(String content, String logoImgPath, String destPath, boolean needCompress)
            throws Exception {
        BufferedImage image = QRCodeUtil.createImage(content, logoImgPath, needCompress);
        FileUtils.mkdirs(destPath);
        ImageIO.write(image, FORMAT_NAME, new File(destPath));
    }

    /**
     * @todo
     * @author zhangyanan
     * @date 2018年8月6日
     * @param content
     *            二维码内容
     * @param destPath
     *            二维码输出路径
     * @throws Exception
     *             void TODO 生成不带Logo的二维码
     */
    public static void encode(String content, String destPath) throws Exception {
        QRCodeUtil.encode(content, null, destPath, false);
    }

    /**
     * @todo
     * @author zhangyanan
     * @date 2018年8月6日
     * @param content
     *            二维码内容
     * @param logoImgPath
     *            Logo
     * @param output
     *            输出流
     * @param needCompress
     *            是否压缩Logo
     * @throws Exception
     *             void TODO 生成带Logo的二维码，并输出到指定的输出流
     */
    public static void encode(String content, String logoImgPath, OutputStream output, boolean needCompress)
            throws Exception {
        BufferedImage image = QRCodeUtil.createImage(content, logoImgPath, needCompress);
        ImageIO.write(image, FORMAT_NAME, output);
    }

    /**
     * @todo
     * @author zhangyanan
     * @date 2018年8月6日
     * @param content
     *            二维码内容
     * @param output
     *            输出流
     * @throws Exception
     *             void TODO 生成不带Logo的二维码，并输出到指定的输出流
     */
    public static void encode(String content, OutputStream output) throws Exception {
        QRCodeUtil.encode(content, null, output, false);
    }

    /**
     * @todo 解析二维码
     * @author zhangyanan
     * @date 2018年8月6日
     */
    @SuppressWarnings("unchecked")
    public static JSONObject decoderQRCode(String imgPath) {
        JSONObject json = new JSONObject();
        try {
            MultiFormatReader formatReader = new MultiFormatReader(); // 二维码图片位置
            File file = new File(imgPath);
            BufferedImage image = ImageIO.read(file);
            BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(image)));
            // 定义二维码的参数
            @SuppressWarnings("rawtypes")
            HashMap hints = new HashMap(); // 设置编码字符集
            hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
            // 处理读取结果
            Result result = formatReader.decode(binaryBitmap, hints);
            // System.out.println("解析结果：" + result.toString());
            // System.out.println("二维码格式类型：" + result.getBarcodeFormat());
            // System.out.println("二维码文本内容：" + result.getText());
            json.put("result", true);
            // json.put("qrcode",result.getBarcodeFormat());
            json.put("qrtext", result.getText());
            json.put("msg", "解析成功");
        } catch (NotFoundException e) {
            e.printStackTrace();
            json.put("result", false);
            json.put("msg", "解析失败，请保证图片清晰重试");
        } catch (IOException e) {
            e.printStackTrace();
            json.put("result", false);
            json.put("msg", "解析失败，请保证图片清晰重试");
        }
        return json;

    }

}

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一维码工具类，一维码@参考文章

package util;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.Hashtable;

import javax.imageio.ImageIO;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.DecodeHintType;
import com.google.zxing.EncodeHintType;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.Result;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;

import net.sf.json.JSONObject;

/**
 * TODO 条形码工具类 2019年12月6日
 * 
 * @author zhangyanan
 */
public class BarCodeUtil {

    private static final int BLACK = 0xFF000000;
    private static final int WHITE = 0xFFFFFFFF;
    private static final String CHARSET = "UTF-8";

    public static void main(String[] args) throws Exception {
        String text = "9999000026";
        String result;
        String format = "png";
        File outputFile = new File("d:" + File.separator + "rqcode.png");
        outputFile = new File("d:" + File.separator + "barcode.png");
        BarCodeUtil.writeToFile(BarCodeUtil.toBarCodeMatrix(text, null, null), format, outputFile);
        result = BarCodeUtil.decode(outputFile);
        System.out.println(result);
    }

    /**
     * TODO 将字符串编成一维条码的矩阵 2019年12月6日
     * 
     * @author zhangyanan
     */
    public static BitMatrix toBarCodeMatrix(String str, Integer width, Integer height) {

        if (width == null || width < 200) {
            width = 200;
        }

        if (height == null || height < 50) {
            height = 50;
        }

        try {
            // 文字编码
            Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();
            hints.put(EncodeHintType.CHARACTER_SET, CHARSET);

            BitMatrix bitMatrix = new MultiFormatWriter().encode(str, BarcodeFormat.CODE_128, width, height, hints);

            return bitMatrix;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * TODO 根据矩阵、图片格式，生成文件。 2019年12月6日
     * 
     * @author zhangyanan
     */
    public static void writeToFile(BitMatrix matrix, String format, File file) throws IOException {
        BufferedImage image = toBufferedImage(matrix);
        if (!ImageIO.write(image, format, file)) {
            throw new IOException("Could not write an image of format " + format + " to " + file);
        }
    }

    /**
     * TODO 解码，需要javase包。 2019年12月6日
     * 
     * @author zhangyanan
     */
    public static String decode(File file) {

        BufferedImage image;
        try {
            if (file == null || file.exists() == false) {
                throw new Exception(" File not found:" + file.getPath());
            }

            image = ImageIO.read(file);

            LuminanceSource source = new BufferedImageLuminanceSource(image);
            BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));

            Result result;

            // 解码设置编码方式为：utf-8，
            Hashtable<DecodeHintType, String> hints = new Hashtable<DecodeHintType, String>();
            hints.put(DecodeHintType.CHARACTER_SET, CHARSET);

            result = new MultiFormatReader().decode(bitmap, hints);

            return result.getText();

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

        return null;
    }

    /**
     * TODO 根据点矩阵生成黑白图。 2019年12月6日
     * 
     * @author zhangyanan
     */
    public static BufferedImage toBufferedImage(BitMatrix matrix) {
        int width = matrix.getWidth();
        int height = matrix.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, matrix.get(x, y) ? BLACK : WHITE);
            }
        }
        return image;
    }

    /**
     * TODO 解析条形码 2019年12月6日
     * 
     * @author zhangyanan
     */
    public static JSONObject decodeBarCode(String imgPath) {
        JSONObject json = new JSONObject();
        BufferedImage image = null;
        Result result = null;
        try {
            image = ImageIO.read(new File(imgPath));
            if (image == null) {
                System.out.println("the decode image may be not exit.");
            }
            LuminanceSource source = new BufferedImageLuminanceSource(image);
            BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
            /*
             * Map<DecodeHintType, Object> hints = new Hashtable<>();
             * hints.put(DecodeHintType.PURE_BARCODE, Boolean.TRUE);
             * hints.put(DecodeHintType.CHARACTER_SET, "utf-8"); result = new
             * MultiFormatReader().decode(bitmap, hints);
             */
            result = new MultiFormatReader().decode(bitmap, null);
            json.put("result", true);
            json.put("msg", "解析条形码成功");
            // json.put("qrcode",result.getBarcodeFormat());
            json.put("qrtext", result.getText());
            System.out.println("解析结果：" + result.toString());
            System.out.println("条形码格式类型：" + result.getBarcodeFormat());
            System.out.println("条形码文本内容：" + result.getText());
        } catch (Exception e) {
            e.printStackTrace();
            json.put("result", false);
            json.put("msg", "解析失败，请保证图片清晰重试");
        }
        return json;
    }

}

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