可以根据需求是否实现下载到压缩文件中
参考地址：https://blog.csdn.net/Alian_1223/article/details/117332164
代码实现：
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>core</artifactId>
<version>3.4.1</version>
</dependency>
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.datamatrix.encoder.SymbolShapeHint; import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel; import org.apache.commons.lang3.StringUtils; import javax.imageio.ImageIO; import java.awt.*; import java.awt.image.BufferedImage; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.util.HashMap; import java.util.Map; import java.util.zip.ZipEntry; import java.util.zip.ZipOutputStream; import static java.util.Objects.nonNull; public class QrCodeUtils { //黑色 private static final int BLACK = 0xFF000000; //白色 private static final int WHITE = 0xFFFFFFFF; //编码集 private static final String CHARSET = "UTF-8"; /** * @param content:二维码的内容 * @param width：要生成的二维码的宽度 * @param height：要生成的二维码的高度 * @param fileName：文件的名称 * @param imageType：文件的类型 * @param filePath：文件的地址 */ public static String createImage(String logoFile,String content, int width, int height, String fileName, String imageType, String filePath) { MultiFormatWriter multiFormatWriter = new MultiFormatWriter(); Map<EncodeHintType, Object> hints = new HashMap<>(); hints.put(EncodeHintType.CHARACTER_SET, CHARSET);//编码集 hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);//容错率 hints.put(EncodeHintType.DATA_MATRIX_SHAPE, SymbolShapeHint.FORCE_SQUARE);//生成的数据矩阵的形状 try { BitMatrix bitMatrix = multiFormatWriter.encode(content, BarcodeFormat.QR_CODE, width, height, hints); File file = new File(filePath, fileName + "." + imageType); bitMatrix = deleteWhite(bitMatrix); writeToFile(logoFile,bitMatrix, imageType, file); return filePath + File.separator + fileName + "." + imageType; } catch (Exception e) { e.printStackTrace(); } return ""; } /** * 清除白边 * * @param matrix * @return */ public static BitMatrix deleteWhite(BitMatrix matrix) { int[] rec = matrix.getEnclosingRectangle(); int resWidth = rec[2]; int resHeight = rec[3]; BitMatrix resMatrix = new BitMatrix(resWidth, resHeight); resMatrix.clear(); for (int i = 0; i < resWidth; i++) { for (int j = 0; j < resHeight; j++) { if (matrix.get(i + rec[0], j + rec[1])) resMatrix.set(i, j); } } return resMatrix; } /** * 写入二维码文件 * @param matrix * @param format * @param file * @throws IOException */ public static void writeToFile(String logoFileUrl,BitMatrix matrix, String format, File file) throws Exception { 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); } } if(StringUtils.isNotBlank(logoFileUrl)){ File logoFile = new File(logoFileUrl); if (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(); if (!ImageIO.write(image, format, file)) { throw new IOException("Could not write an image of format " + format + " to " + file); } } public static void main(String[] args) throws Exception{ FileOutputStream fos = new FileOutputStream("D:\\sxh\\imageFolder.zip"); ZipOutputStream zos = new ZipOutputStream(fos); for(int i=0;i<3;i++){ String qrCodeContent = "https://www.baidu.com"; //二维码要生成的路径 String qrCodeImagePath = "D:\\sxh"; String logoPath = "C:\\Users\\86181\\Desktop\\2.png"; //生成Alian.png的二维码图片(去除白边) String qrCodeUrl = createImage(logoPath,qrCodeContent, 240, 240, "qrCode_Alian", "png", qrCodeImagePath); //本地背景图片地址 String backGroundUrl = "C:\\Users\\86181\\Desktop\\4.png"; //最终合成图片的地址 String imageName = "D:\\sxh\\"+i+".png"; //图片上的标签绘制 String title = i+"YJ-320581-02-004298"; //合成图片 String merge = ImageUtil.merge(backGroundUrl, qrCodeUrl, imageName, title); ZipEntry zipEntry = new ZipEntry(merge); zos.putNextEntry(zipEntry); FileInputStream fis = new FileInputStream(new File(merge)); byte[] buffer = new byte[1024]; int length; while ((length = fis.read(buffer)) > 0) { zos.write(buffer, 0, length); } fis.close(); // Delete the original file new File(merge).delete(); } zos.closeEntry(); zos.close(); } }
import javax.imageio.ImageIO; import java.awt.*; import java.awt.image.BufferedImage; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.util.zip.ZipEntry; import java.util.zip.ZipOutputStream; /** * @program: CSDN * @description: 图片合成工具 * @author: Alian * @create: 2021-05-29 11:11:11 **/ public class ImageUtil { /** * 一些写死的参数，一般是不会变的，各自根据自己的模板进行调整即可 * @param backGroundImageUrl * @param qrCodeUrl * @param imageName * @param title * @return */ public static String merge(String backGroundImageUrl, String qrCodeUrl, String imageName, String title) { // 添加字体的属性设置 Font font = new Font("黑体", Font.BOLD, 20); try { //加载背景图片(也就是模板图) BufferedImage backGroundImage = ImageIO.read(new File(backGroundImageUrl)); //加载二维码图片(也就是需要合成到模板图上的图片) BufferedImage imageCode = ImageIO.read(new File(qrCodeUrl)); //把背景图片当做为模板 Graphics2D graphics = backGroundImage.createGraphics(); //在模板上绘制图象(需要绘图的图片,左边距,上边距,图片宽度,图片高度,图像观察者)同一个模板一般是不会变的 graphics.drawImage(imageCode, 65, 182, 240, 240, null); //设置字体 graphics.setFont(font); //设置颜色 graphics.setColor(Color.BLACK); //获取字体度量(字体度量是指对于指定字号的某种字体，在度量方面的各种属性) FontMetrics fontMetrics = graphics.getFontMetrics(font); //获取字体度量的宽度 int textWidth = fontMetrics.stringWidth(title); //左边距=(模板图宽度-文字宽度)/2 int widthX = (backGroundImage.getWidth() - textWidth) / 2; //g.drawString(title, 820, 2850); //绘制文字(内容，左边距,上边距)，同一个模板上边距一般也是不变的 graphics.drawString(title, widthX, 460); //完成模板修改 graphics.dispose(); //获取新文件的地址 File outPutFile = new File(imageName); //生成新的合成过的用户二维码并写入新图片,指定类型为png ImageIO.write(backGroundImage, "png", outPutFile); //zip(outPutFile); } catch (Exception e) { e.printStackTrace(); } // 返回给页面的图片地址(因为绝对路径无法访问) return imageName; } public static void zip(File file) { try { // File outputFile = new File("output.png"); // ImageIO.write(image, "png", outputFile); FileOutputStream fos = new FileOutputStream("D:\\sxh\\imageFolder.zip"); ZipOutputStream zos = new ZipOutputStream(fos); ZipEntry zipEntry = new ZipEntry(file.getName()); zos.putNextEntry(zipEntry); FileInputStream fis = new FileInputStream(file); byte[] buffer = new byte[1024]; int length; while ((length = fis.read(buffer)) > 0) { zos.write(buffer, 0, length); } fis.close(); zos.closeEntry(); zos.close(); // Delete the original file file.delete(); } catch (IOException e) { e.printStackTrace(); } } }
