java生成带logo的二维码并且可以嵌套背景图片

2024-06-28 10:42| 来源: 网络整理| 查看: 265

一、效果图在这里插入图片描述二、代码

使用的是zxing所以需要2个依赖,下面是pom.xml的配置:

3.3.1 3.1.0 com.google.zxing core ${zxing.version} com.google.zxing javase ${zxing.javase.version}

完整代码ZXingBackGroundUtils.java:

package com.zzq.test.zxing; 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.image.BufferedImage; import java.io.File; import java.io.IOException; import java.net.URL; import java.util.HashMap; import java.util.Map; import java.util.Objects; /** * @author * @Title: ${file_name} * @Package ${package_name} * @Description: 合成图片 ---- 生成二维码和嵌套背景图片 * @date 2020/12/10 14:44 */ public class ZXingBackGroundUtils { private static final int QRCOLOR = 0xFF000000; // 默认是黑色 private static final int BGWHITE = 0xFFFFFFFF; // 背景颜色 private static final int WIDTH = 200; // 二维码宽 private static final int HEIGHT = 200; // 二维码高 // 用于设置QR二维码参数 private static Map hints = new HashMap() { private static final long serialVersionUID = 1L; { put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);// 设置QR二维码的纠错级别（H为最高级别）具体级别信息 put(EncodeHintType.CHARACTER_SET, "utf-8");// 设置编码方式 put(EncodeHintType.MARGIN, 0); } }; // 生成带logo的二维码图片 /*** *@param logoFile logo图地址 * @param codeFile 二维码生成地址 * @param qrUrl 扫描二维码方位地址 * */ public static void drawLogoQRCode(File logoFile, File codeFile, String qrUrl) { try { MultiFormatWriter multiFormatWriter = new MultiFormatWriter(); // 参数顺序分别为：编码内容，编码类型，生成图片宽度，生成图片高度，设置参数 BitMatrix bm = multiFormatWriter.encode(qrUrl, BarcodeFormat.QR_CODE, WIDTH, HEIGHT, hints); BufferedImage image = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_RGB); // 开始利用二维码数据创建Bitmap图片，分别设为黑（0xFFFFFFFF）白（0xFF000000）两色 for (int x = 0; x image.setRGB(x, y, bm.get(x, y) ? QRCOLOR : BGWHITE); } } int width = image.getWidth(); int height = image.getHeight(); if (Objects.nonNull(logoFile) && logoFile.exists()) { // 构建绘图对象 Graphics2D g = image.createGraphics(); // 读取Logo图片 BufferedImage logo = ImageIO.read(logoFile); // 开始绘制logo图片 g.drawImage(logo, width * 2 / 5, height * 2 / 5, width * 2 / 10, height * 2 / 10, null); g.dispose(); logo.flush(); } image.flush(); ImageIO.write(image, "png", codeFile); // TODO } catch (Exception e) { e.printStackTrace(); } } public static void main(String[] args) throws Exception { //头像logo File logoFile = new File("C://Users//Administrator//Desktop//2.jpg"); //生成二维码地址 File QrCodeFile = new File("C://Users//Administrator//Desktop//test.jpg"); String url = "https://www.baidu.com/"; drawLogoQRCode(logoFile, QrCodeFile, url); mergeImage("C://Users//Administrator//Desktop//1.jpg", "C://Users//Administrator//Desktop//test.jpg", "C://Users//Administrator//Desktop//test2.jpg","63", "163"); } /*** * 二维码嵌套背景图的方法 *@param bigPath 背景图 - 可传网络地址 *@param smallPath 二维码地址 - 可传网络地址 *@param newFilePath 生成新图片的地址 * @param x 二维码x坐标 * @param y 二维码y坐标 * */ public static void mergeImage(String bigPath, String smallPath, String newFilePath,String x, String y) throws IOException { try { BufferedImage small; BufferedImage big; if (bigPath.contains("http://") || bigPath.contains("https://")) { URL url = new URL(bigPath); big = ImageIO.read(url); } else { big = ImageIO.read(new File(bigPath)); } if (smallPath.contains("http://") || smallPath.contains("https://")) { URL url = new URL(smallPath); small = ImageIO.read(url); } else { small = ImageIO.read(new File(smallPath)); } Graphics2D g = big.createGraphics(); float fx = Float.parseFloat(x); float fy = Float.parseFloat(y); int x_i = (int) fx; int y_i = (int) fy; g.drawImage(small, x_i, y_i, small.getWidth(), small.getHeight(), null); g.dispose(); ImageIO.write(big, "png", new File(newFilePath)); } catch (Exception e) { e.printStackTrace(); } } }

主要2个方法: 1、drawLogoQRCode生成二维码 2、mergeImage给二维码嵌套背景合并图片

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