微信支付二维码上添加logo

我就是我 2022-11-22 02:49 360阅读 0赞

工具类的使用，分享给大家。先看效果：

无logo时：

![20201103151053454.png][]

有logo时：

![20201103145710726.png][]

import java.awt.image.BufferedImage;
    import java.io.File;
    import java.io.IOException;
    import java.io.OutputStream;
    import java.util.Hashtable;
    
    import javax.imageio.ImageIO;
    
    import com.google.zxing.BarcodeFormat;
    import com.google.zxing.EncodeHintType;
    import com.google.zxing.MultiFormatWriter;
    import com.google.zxing.common.BitMatrix;
    
    /**
     * @Date 创建时间： 2020-11-03 09:54
     * @Author 作者姓名: Liux
     * @Version 1.0
     * @Copyright Copyright by
     * @Direction 类说明 二维码写入到本地文件、或者二维码写入到流、以及二维码加入logo的操作
     */
    public class QRCodeUtil {
    
    	private static final int BLACK = 0xFF000000;
    	private static final int WHITE = 0xFFFFFFFF;
    
    	private QRCodeUtil() {
    	}
    
    	private 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;
    	}
    
    	/***
    	 * 文件方式生成
    	 * @param matrix
    	 * @param format
    	 * @param file
    	 * @throws IOException
    	 */
    	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);
    		}
    	}
    
    
    	/***
    	 * 文件方式生成
    	 * @param matrix
    	 * @param format
    	 * @param file
    	 * @throws IOException
    	 */
    	public static void writeLogoToFile(BitMatrix matrix, String format, File file) throws IOException {
    		BufferedImage image = toBufferedImage(matrix);
    		//设置logo图标
    		image = QRLogoConfig.LogoMatrix( image );
    		if (!ImageIO.write(image, format, file)) {
    			throw new IOException("Could not write an image of format " + format + " to " + file);
    		}
    	}
    
    	/***
    	 * 流方式生成 - 普通版本
    	 * @param matrix
    	 * @param format
    	 * @param stream
    	 * @throws IOException
    	 */
    	public static void writeToStream(BitMatrix matrix, String format, OutputStream stream) throws IOException {
    		BufferedImage image = toBufferedImage(matrix);
    		if (!ImageIO.write(image, format, stream)) {
    			throw new IOException("Could not write an image of format " + format);
    		}
    	}
    	
    	/***
    	 * 流方式生成 - 待logo版本
    	 * @param matrix
    	 * @param format
    	 * @param stream
    	 * @throws IOException
    	 */
    	public static void writeLogoToStream(BitMatrix matrix, String format, OutputStream stream) throws IOException {
    		BufferedImage image = toBufferedImage(matrix);
    		//设置logo图标
    		BufferedImage logoImage = QRLogoConfig.LogoMatrix( image );
    		File outputFile = new File("D:" + File.separator + "new.gif");
    		ImageIO.write(image, format, outputFile ) ;
    		if ( !ImageIO.write( logoImage , format, stream ) ) {
    			throw new IOException("Could not write an image of format " + format);
    		}
    	}
    
    	public static void main(String[] args) throws Exception {
    		String text = "http://www.baidu.com";
    		int width = 300;
    		int height = 300;
    		// 二维码的图片格式
    		String format = "gif";
    		Hashtable hints = new Hashtable();
    		// 内容所使用编码
    		hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
    		BitMatrix bitMatrix = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height, hints);
    		// 生成二维码
    		File outputFile = new File("D:" + File.separator + "new.gif");
    		QRCodeUtil.writeToFile(bitMatrix, format, outputFile);
    		QRCodeUtil.writeLogoToFile(bitMatrix, format, outputFile);
    	}
    
    }

import org.springframework.core.io.ClassPathResource;
    
    import javax.imageio.ImageIO;
    import java.awt.image.BufferedImage;
    import java.io.IOException;
    import java.io.InputStream;
    
    /**
     * @Date 创建时间： 2020-11-03 10:09
     * @Author 作者姓名: Liux
     * @Version 1.0
     * @Copyright Copyright by
     * @Direction 类说明
     * 二维码 添加 logo图标 处理的方法,
     * 模仿微信自动生成二维码效果，有圆角边框，logo和二维码间有空白区，logo带有灰色边框
     */
    public class QRLogoConfig {
    
        /***
         * 微信支付时使用的logo最好不要超过 45 * 45，否则有概率扫一扫识别不成功
         */
        private static int logo_width = 45 ;
        private static int logo_height = 45 ;
    
        /**
         * 设置 logo
         * @param matrixImage 源二维码图片
         * @return 返回带有logo的二维码图片
         * @throws IOException
         * @author
         */
        public static BufferedImage LogoMatrix(BufferedImage matrixImage) throws IOException{
            //读取Logo图片 - springboot resource下面的文件夹下读取配置
            ClassPathResource classPathResource = new ClassPathResource("static/common/img/logo.png");
            InputStream inputStream = classPathResource.getInputStream();
            BufferedImage logoImage = ImageIO.read( inputStream );
            return mergeImage( matrixImage , logoImage , null ) ;
        }
    
        /**
         * 待合并的两张图必须满足这样的前提，如果水平方向合并，则高度必须相等；如果是垂直方向合并，宽度必须相等。
         * mergeImage方法不做判断，自己判断。
         *
         * @param logoImage
         *            待合并的第一张图
         * @param targetImage
         *            带合并的第二张图
         * @param isHorizontal
         *            为true时表示水平方向合并，为false时表示垂直方向合并
         * @return 返回合并后的BufferedImage对象
         * @throws IOException
         */
        public static BufferedImage mergeImage( BufferedImage targetImage, BufferedImage logoImage, String isHorizontal) throws IOException {
            int w1 = targetImage.getWidth();
            int h1 = targetImage.getHeight();
            int w2 = logoImage.getWidth();
            int h2 = logoImage.getHeight();
            logo_width = w2 ;
            logo_height = h2 ;
    
            // 从图片中读取RGB
            int[] ImageArrayOne = new int[w1 * h1];
            ImageArrayOne = targetImage.getRGB(0, 0, w1, h1, ImageArrayOne, 0, w1); // 逐行扫描图像中各个像素的RGB到数组中
            int[] ImageArrayTwo = new int[w2 * h2];
            ImageArrayTwo = logoImage.getRGB(0, 0, w2, h2, ImageArrayTwo, 0, w2);
    
            // 生成新图片
            BufferedImage DestImage = null;
            if(isHorizontal==null){
                if(true){
                    DestImage = new BufferedImage(w1, h1, BufferedImage.TYPE_INT_RGB);
                    //第一步-画出底图的信息
                    DestImage.setRGB(0, 0, w1, h1, ImageArrayOne, 0, w1); // 设置上半部分或左半部分的RGB
                    //第二步-画出logo图片的信息，开始的坐标，长宽设置
                    int startX = ( w1 / 2 ) - (logo_width / 2) ;
                    int starty = ( h1 / 2 ) - (logo_height / 2) ;
                    DestImage.setRGB( startX,starty, logo_width ,logo_height , ImageArrayTwo, 0, logo_width );
                }
            }else  if (isHorizontal.equals("1")) { // 水平方向合并
                DestImage = new BufferedImage(w1+w2, h1, BufferedImage.TYPE_INT_RGB);
                DestImage.setRGB(0, 0, w1, h1, ImageArrayOne, 0, w1); // 设置上半部分或左半部分的RGB
                DestImage.setRGB(w1, 20, w2, h2, ImageArrayTwo, 0, w2);
            } else if(isHorizontal.equals("2")) { // 垂直方向合并
                DestImage = new BufferedImage(w1, h1 + h2,
                        BufferedImage.TYPE_INT_RGB);
                DestImage.setRGB(0, 0, w1, h1, ImageArrayOne, 0, w1); // 设置上半部分或左半部分的RGB
                DestImage.setRGB(0, h1, w2, h2, ImageArrayTwo, 0, w2); // 设置下半部分的RGB
            }
    
            return DestImage;
        }
    
    }

依赖的Maven包：
    
    <dependency>
    	<groupId>com.google.zxing</groupId>
    	<artifactId>core</artifactId>
    	<version>3.1.0</version>
    </dependency>

微信二维码支付时调用：
    
    //二维码宽高
    int width=300,height=300 ;
    //微信统一下单后，返回的二维码内容字符
    String text = "" ;
    //二维码的图片格式
    String format = "gif";
    Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();
    //内容所使用编码
    hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
    BitMatrix bitMatrix = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height, hints);
    //生成简单二维码
    //QRCodeUtil.writeToStream(bitMatrix, format, response.getOutputStream());
    //生成二维码带logo
    QRCodeUtil.writeLogoToStream(bitMatrix, format, response.getOutputStream());

[20201103151053454.png]: /images/20221120/594c616cf07f47d1ad42750ca7a549ff.png
[20201103145710726.png]: /images/20221120/6abce7df224c488d8d4315b38df61f97.png