Java生成中间logo的二维码

最近在做商家的模块，需要生成二维码。本来开始想着直接生成二维码就行 ，经过和产品等沟通，需要二维码带上logo等

于是自己写了一个工具类,可以直接使用。有些路径和文件名生成规则需要自己改下，注释已经写的很详细了。希望对大家有所帮助

package com.allk.utils;import java.awt.BasicStroke;import java.awt.Color;import java.awt.Graphics2D;import java.awt.image.BufferedImage;import java.io.File;import java.io.IOException;import java.io.InputStream;import java.util.Arrays;import java.util.HashMap;import java.util.Hashtable;import java.util.Locale;import java.util.Map;import java.util.UUID;import javax.imageio.ImageIO;import javax.imageio.ImageWriteParam;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.NotFoundException;import com.google.zxing.Result;import com.google.zxing.WriterException;import com.google.zxing.client.j2se.BufferedImageLuminanceSource;import com.google.zxing.client.j2se.MatrixToImageWriter;import com.google.zxing.common.BitMatrix;import com.google.zxing.common.HybridBinarizer;import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;/** * @Author Darren * @Time 2017年9月5日 上午10:57:14 * @Description:二维码生成/解析 */public class QRCodeUtils {/** 图片格式 */public static final String QRCODE_PNG = "png";public static final String QRCODE_JPG = "jpg";public static final String QRCODE_GIF = "gif";public static final String QRCODE_BMP = "bmp";public static final String QRCODE_JPEG = "jpeg";public static final String QRCODE_PNM = "pnm";private static final Integer QRCode$width = 200;private static final Integer QRCode$height = 200;private static final int QRCOLOR = 0xFF000000; // 默认是黑色private static final int BGWHITE = 0xFFFFFFFF; // 背景颜色/** 二维码图片存储服务器路径 */public static final String QRCode$imgSrc = "/images/qrcode";/** 二维码logo图片，默认使用logo图片 */public static final String QRCode$logoImg = "/images/public/pinklogo.jpg";/** * 不带logo的二维码 *  * @param text 二维码附带的信息 * @param path 要存放二维码图片的路径 * @param format 图片格式 /jpg,png,gif.......... * @param file 需要显示在二维码中心位置的小图标(图片) * @throws Exception * @throws WriterException * @throws IOException */public static final String[] createQRCode(String text, String path, String format)throws WriterException, IOException {BitMatrix bitMatrix = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, QRCode$width, QRCode$height,getDecodeHintType());String filePath = path + QRCode$imgSrc + "/" + createServerImgName();File outputFile = new File(filePath);MatrixToImageWriter.writeToFile(bitMatrix, format, outputFile);// 生成不带中心位置图标的二维码图片String[] img = new String[3];img[0] = QRCode$imgSrc + "/" + createServerImgName();img[1] = String.valueOf(QRCode$width);img[2] = String.valueOf(QRCode$height);return img;}/** * 带logo的二维码 *  * @param text 二维码附带的信息 * @param path 要存放二维码图片的路径 * @param format 图片格式 /jpg,png,gif.......... * @param file 需要显示在二维码中心位置的小图标(图片) * @throws Exception * @throws WriterException * @throws IOException */public static final String[] createLogoQRCode(String text, String path, String format, File file)throws WriterException, IOException {BitMatrix bitMatrix = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, QRCode$width, QRCode$height,getDecodeHintType());int w = bitMatrix.getWidth();int h = bitMatrix.getHeight();BufferedImage image = new BufferedImage(w, h, 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 < w; x++) {for (int y = 0; y < h; y++) {image.setRGB(x, y, bitMatrix.get(x, y) ? QRCOLOR : BGWHITE);}}BufferedImage bufferedImage = null;if (file != null) {bufferedImage = encodeImgLogo(image, file);// 绘制二维码自定义中心位置图片,注意实际格式，更改图片后缀名为满足的格式无效} else {// logo图片String logoPath = path + QRCode$logoImg;bufferedImage = encodeImgLogo(image, new File(logoPath));// 绘制二维码中心位置logo图片}if (bufferedImage == null) {return null;}// 重新生成带logo的二维码图片String imgName = createServerImgName();String QRClogCode = path + QRCode$imgSrc + "/" + imgName;ImageIO.write(bufferedImage, format, new File(QRClogCode));// 生成带中心位置图标的二维码图片String[] img = new String[3];img[0] = QRCode$imgSrc + "/" + imgName;img[1] = String.valueOf(QRCode$width);img[2] = String.valueOf(QRCode$height);return img;}/** * 解析二维码，需要javase包。 文件方式解码 *  * @param file * @return */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);return unifiedDecode(image);} catch (Exception e) {e.printStackTrace();}return null;}/** * 解析二维码 流方式解码 *  * @param input * @return */public static String decode(InputStream input) {BufferedImage image;try {if (input == null) {throw new Exception(" input is null");}image = ImageIO.read(input);return unifiedDecode(image);} catch (Exception e) {e.printStackTrace();}return null;}private static String unifiedDecode(BufferedImage image) throws NotFoundException {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, "utf-8");result = new MultiFormatReader().decode(bitmap, hints);return result.getText();}/** * 生成文件名 * @return */public static final String createServerImgName() {UUID serverImgUuid = UUID.randomUUID();return DateFormatterUtils.getDateTime() + serverImgUuid.toString();// 文件名}/** * 设置二维码的格式参数 *  * @return */public static Map<EncodeHintType, Object> getDecodeHintType() {// 用于设置QR二维码参数Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();// 设置QR二维码的纠错级别（H为最高级别）具体级别信息hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);// 设置编码方式hints.put(EncodeHintType.CHARACTER_SET, "utf-8");hints.put(EncodeHintType.MARGIN, 0);hints.put(EncodeHintType.MAX_SIZE, 350);hints.put(EncodeHintType.MIN_SIZE, 100);return hints;}/** * 二维码绘制logo *  * @param image * @param logoImg *            logo图片文件 格式：JPG, jpg, tiff, pcx, PCX, bmp, BMP, gif, GIF, *            WBMP, png, PNG, raw, RAW, JPEG, pnm, PNM, tif, TIF, TIFF, *            wbmp, jpeg * @throws IOException */public static BufferedImage encodeImgLogo(BufferedImage image, File logoImg) throws IOException {// String[] names = ImageIO.getReaderFormatNames();// System.out.println(Arrays.toString(names));// 能读取的图片格式：JPG, jpg, tiff, pcx, PCX, bmp, BMP, gif, GIF, WBMP, png, PNG, raw, RAW, JPEG, pnm, PNM, tif, TIF, TIFF, wbmp, jpeg// 读取二维码图片// 获取画笔Graphics2D g = image.createGraphics();// 读取logo图片BufferedImage logo = ImageIO.read(logoImg);// 设置二维码大小，太大，会覆盖二维码，此处20%int logoWidth = logo.getWidth(null) > image.getWidth() * 2 / 10 ? (image.getWidth() * 2 / 10): logo.getWidth(null);int logoHeight = logo.getHeight(null) > image.getHeight() * 2 / 10 ? (image.getHeight() * 2 / 10): logo.getHeight(null);// 设置logo图片放置位置// 中心int x = (image.getWidth() - logoWidth) / 2;int y = (image.getHeight() - logoHeight) / 2;// 右下角，15为调整值// int x = twodimensioncode.getWidth() - logoWidth-15;// int y = twodimensioncode.getHeight() - logoHeight-15;// 开始合并绘制图片g.drawImage(logo, x, y, logoWidth, logoHeight, null);g.drawRoundRect(x, y, logoWidth, logoHeight, 15, 15);// logo边框大小g.setStroke(new BasicStroke(2));// logo边框颜色g.setColor(Color.WHITE);g.drawRect(x, y, logoWidth, logoHeight);g.dispose();logo.flush();image.flush();return image;}}

pom.xml

<!-- google ZXing Core工具包，生成二维码 --><dependency><groupId>com.google.zxing</groupId><artifactId>core</artifactId><version>3.3.0</version></dependency><dependency><groupId>com.google.zxing</groupId><artifactId>javase</artifactId><version>3.3.0</version></dependency>

二维码