Java 利用google.zxing类生成的BitMatrix二维码添加logo图标

网上生成Java生成二维码的教程千千万，这里记录一下现在用的留用备忘，利用google.zxing类生成带logo图标的二维码

导入google.zxing包

在pom.xml 中添加

      <!-- https://mvnrepository.com/artifact/com.google.zxing/core -->        <dependency>            <groupId>com.google.zxing</groupId>            <artifactId>core</artifactId>            <version>3.3.0</version>        </dependency>

实现编码

package com.bluedream.crowdfunding.util.QRCode;import com.google.zxing.BarcodeFormat;import com.google.zxing.EncodeHintType;import com.google.zxing.MultiFormatWriter;import com.google.zxing.WriterException;import com.google.zxing.common.BitMatrix;import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;import javax.imageio.ImageIO;import java.awt.*;import java.awt.geom.AffineTransform;import java.awt.image.AffineTransformOp;import java.awt.image.BufferedImage;import java.io.File;import java.io.IOException;import java.io.UnsupportedEncodingException;import java.util.HashMap;import java.util.Map;/** * @Description *                  利用google.zxing类生成的BitMatrix二维码添加logo图标 * @name MatrixToImageWriterWithLogo * @Date 2017/6/23 10:17 */public class MatrixToImageWriterWithLogo {    private static final int IMAGE_WIDTH = 100;    private static final int IMAGE_HEIGHT = 100;    private static final int IMAGE_HALF_WIDTH = IMAGE_WIDTH / 2;    private static final int FRAME_WIDTH = 2;    private static MultiFormatWriter mutiWriter = new MultiFormatWriter();    public static void encode(String content, int width, int height,                              String srcImagePath, String destImagePath) {        try {            ImageIO.write(genBarcode(content, width, height, srcImagePath), "jpg", new File(destImagePath));        } catch (IOException e) {            e.printStackTrace();        } catch (WriterException e) {            e.printStackTrace();        }    }    public static BufferedImage genBarcode(String content, int width,                                            int height, String srcImagePath) throws WriterException,            IOException {        BufferedImage scaleImage = scale(srcImagePath, IMAGE_WIDTH,                IMAGE_HEIGHT, true);        int[][] srcPixels = new int[IMAGE_WIDTH][IMAGE_HEIGHT];        for (int i = 0; i < scaleImage.getWidth(); i++) {            for (int j = 0; j < scaleImage.getHeight(); j++) {                srcPixels[i][j] = scaleImage.getRGB(i, j);            }        }        Map<EncodeHintType, Object> hint = new HashMap<>();        hint.put(EncodeHintType.CHARACTER_SET, "utf-8");        hint.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);        // 生成二维码        BitMatrix matrix = mutiWriter.encode(content, BarcodeFormat.QR_CODE,                width, height, hint);        // 二维矩阵转为一维像素数组        int halfW = matrix.getWidth() / 2;        int halfH = matrix.getHeight() / 2;        int[] pixels = new int[width * height];        for (int y = 0; y < matrix.getHeight(); y++) {            for (int x = 0; x < matrix.getWidth(); x++) {                // 左上角颜色,根据自己需要调整颜色范围和颜色                if (x > 0 && x < 130 && y > 0 && y < 130) {                    Color color = new Color(231, 144, 56);                    int colorInt = color.getRGB();                    pixels[y * width + x] = matrix.get(x, y) ? colorInt                            : 16777215;                }                // 读取图片                else if (x > halfW - IMAGE_HALF_WIDTH                        && x < halfW + IMAGE_HALF_WIDTH                        && y > halfH - IMAGE_HALF_WIDTH                        && y < halfH + IMAGE_HALF_WIDTH) {                    pixels[y * width + x] = srcPixels[x - halfW                            + IMAGE_HALF_WIDTH][y - halfH + IMAGE_HALF_WIDTH];                } else if ((x > halfW - IMAGE_HALF_WIDTH - FRAME_WIDTH                        && x < halfW - IMAGE_HALF_WIDTH + FRAME_WIDTH                        && y > halfH - IMAGE_HALF_WIDTH - FRAME_WIDTH && y < halfH                        + IMAGE_HALF_WIDTH + FRAME_WIDTH)                        || (x > halfW + IMAGE_HALF_WIDTH - FRAME_WIDTH                        && x < halfW + IMAGE_HALF_WIDTH + FRAME_WIDTH                        && y > halfW - IMAGE_HALF_WIDTH - FRAME_WIDTH && y < halfH                        + IMAGE_HALF_WIDTH + FRAME_WIDTH)                        || (x > halfW - IMAGE_HALF_WIDTH - FRAME_WIDTH                        && x < halfW + IMAGE_HALF_WIDTH + FRAME_WIDTH                        && y > halfH - IMAGE_HALF_WIDTH - FRAME_WIDTH && y < halfH                        - IMAGE_HALF_WIDTH + FRAME_WIDTH)                        || (x > halfW - IMAGE_HALF_WIDTH - FRAME_WIDTH                        && x < halfW + IMAGE_HALF_WIDTH + FRAME_WIDTH                        && y > halfH + IMAGE_HALF_WIDTH - FRAME_WIDTH && y < halfH                        + IMAGE_HALF_WIDTH + FRAME_WIDTH)) {                    pixels[y * width + x] = 0xfffffff;                    // 在图片四周形成边框                } else {                    // 二维码颜色                    int num1 = (int) (50 - (50.0 - 13.0) / matrix.getHeight()                            * (y + 1));                    int num2 = (int) (165 - (165.0 - 72.0) / matrix.getHeight()                            * (y + 1));                    int num3 = (int) (162 - (162.0 - 107.0)                            / matrix.getHeight() * (y + 1));                    Color color = new Color(num1, num2, num3);                    int colorInt = color.getRGB();                    // 此处可以修改二维码的颜色，可以分别制定二维码和背景的颜色；                    pixels[y * width + x] = matrix.get(x, y) ? colorInt                            : 16777215;                    // 0x000000:0xffffff                }            }        }        BufferedImage image = new BufferedImage(width, height,                BufferedImage.TYPE_INT_RGB);        image.getRaster().setDataElements(0, 0, width, height, pixels);        return image;    }    private static BufferedImage scale(String srcImageFile, int height,                                       int width, boolean hasFiller) throws IOException {        double ratio = 0.0; // 缩放比例        File file = new File(srcImageFile);        BufferedImage srcImage = ImageIO.read(file);        Image destImage = srcImage.getScaledInstance(width, height,                BufferedImage.SCALE_SMOOTH);        // 计算比例        if ((srcImage.getHeight() > height) || (srcImage.getWidth() > width)) {            if (srcImage.getHeight() > srcImage.getWidth()) {                ratio = (new Integer(height)).doubleValue()                        / srcImage.getHeight();            } else {                ratio = (new Integer(width)).doubleValue()                        / srcImage.getWidth();            }            AffineTransformOp op = new AffineTransformOp(                    AffineTransform.getScaleInstance(ratio, ratio), null);            destImage = op.filter(srcImage, null);        }        if (hasFiller) {            // 补白            BufferedImage image = new BufferedImage(width, height,                    BufferedImage.TYPE_INT_RGB);            Graphics2D graphic = image.createGraphics();            graphic.setColor(Color.white);            graphic.fillRect(0, 0, width, height);            if (width == destImage.getWidth(null))                graphic.drawImage(destImage, 0,                        (height - destImage.getHeight(null)) / 2,                        destImage.getWidth(null), destImage.getHeight(null),                        Color.white, null);            else                graphic.drawImage(destImage,                        (width - destImage.getWidth(null)) / 2, 0,                        destImage.getWidth(null), destImage.getHeight(null),                        Color.white, null);            graphic.dispose();            destImage = image;        }        return (BufferedImage) destImage;    }     /* 测试 */    public static void main(String[] args) throws UnsupportedEncodingException {        // 依次为内容(不支持中文),宽,长,中间图标路径,储存路径        MatrixToImageWriterWithLogo.encode("[e-mail]",                512, 512,                "C:\\Users\\Administrator\\Desktop\\coffee_icon_03.png",                "C:\\Users\\Administrator\\Desktop\\2013-01.jpg");    }}

调用方法，生成二维码

调用MatrixToImageWriterWithLogo类的genBarcode静态方法，传入必要参数，将返回的BufferedImage输出到Response流中

String icon = WXPayController.class.getClassLoader().getResource("coffee_icon.png").getPath();BufferedImage bufferedImage = MatrixToImageWriterWithLogo.genBarcode(urlCode, 512, 512, icon); // 二维码的内容，宽，高，二维码中心的图片地址ImageIO.write(bufferedImage, "jpg", response.getOutputStream());