package jnpf.util; import com.google.zxing.BarcodeFormat; import com.google.zxing.EncodeHintType; import com.google.zxing.MultiFormatWriter; 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.util.HashMap; import java.util.Hashtable; import java.util.Map; /** * * @author JNPF开发平台组 * @version V3.1.0 * @copyright 引迈信息技术有限公司 * @date 2021/3/16 10:58 */ public class ZxingCodeUtil { //-----------------------------------条形码----------------------------------- /** * 条形码的颜色 */ private static final int BLACK = 0xff000000; /** * 背景色 */ private static final int WHITE = 0xFFFFFFFF; /** * 生成一维码（128） * * @param message 内容 * @param width 宽度 * @param height 高度 * @return */ public static BufferedImage getBarcode(String message, int width, int height) { try { Hashtable hints = new Hashtable(); hints.put(EncodeHintType.CHARACTER_SET, "code"); BitMatrix bitMatrix = new MultiFormatWriter().encode(message,BarcodeFormat.CODE_128, width, height, hints); return toBufferedImage(bitMatrix); } catch (Exception e) { e.printStackTrace(); } return null; } /** * 转换成图片 * * @param matrix * @return */ private static BufferedImage toBufferedImage(BitMatrix matrix) { int width = matrix.getWidth(); int height = matrix.getHeight(); BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); 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; } //--------------------------二维码----------------------------------- /** * 二维码颜色 */ private static final int QRCOLOR = 0xFF000000; /** * 背景色 */ private static final int BGCOLOR = 0xFFFFFFFF; /** * 生成普通的二维码 * @param message 二维码内容 * @param width 宽度 * @param height 高度 * @return */ public static BufferedImage createCode(String message, int width, int height) { MultiFormatWriter multiFormatWriter = null; BitMatrix bm = null; BufferedImage image = null; Map hints = getDecodeHintType(); try { 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 bm = multiFormatWriter.encode(message, BarcodeFormat.QR_CODE, width, height, hints); int w = bm.getWidth(); int h = bm.getHeight(); 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, bm.get(x, y) ? QRCOLOR : BGCOLOR); } } } catch (Exception e) { e.printStackTrace(); } return image; } /** * 生成带logo的二维码 * @param message 二维码内容 * @param logoPath log路径 * @param width 宽度 * @param height 高度 * @return */ public static BufferedImage createCodeWithLogo(String message, String logoPath, int width, int height) { BufferedImage bim = createCode(message,width,height); try { // 读取二维码图片，并构建绘图对象 BufferedImage image = bim; Graphics2D g = image.createGraphics(); // 读取Logo图片 BufferedImage logo = ImageIO.read(new File(XSSEscape.escapePath(logoPath))); //设置logo的大小,这里设置为二维码图片的20%,过大会盖掉二维码 int widthLogo = logo.getWidth(null) > image.getWidth() * 3 / 10 ? (image.getWidth() * 3 / 10) : logo.getWidth(null), heightLogo = logo.getHeight(null) > image.getHeight() * 3 / 10 ? (image.getHeight() * 3 / 10) : logo.getWidth(null); // logo放在中心 int x = (image.getWidth() - widthLogo) / 2; int y = (image.getHeight() - heightLogo) / 2; //开始绘制图片 g.drawImage(logo, x, y, widthLogo, heightLogo, null); g.dispose(); logo.flush(); image.flush(); return image; } catch (Exception e) { e.printStackTrace(); } return null; } /** * 生成带logo和文字的二维码 * @param message 二维码内容 * @param logoPath log路径 * @param text 文字 * @param width 宽度 * @param height 高度 * @return */ public static BufferedImage createCodeWithLogoAndText(String message, String logoPath, String text, int width, int height) { BufferedImage image = createCodeWithLogo(message, logoPath,width,height); try { if (text != null && !"".equals(text)) { //新的图片，把带logo的二维码下面加上文字 BufferedImage outImage = new BufferedImage(400, 445, BufferedImage.TYPE_4BYTE_ABGR); Graphics2D outg = outImage.createGraphics(); //画二维码到新的面板 outg.drawImage(image, 0, 0, image.getWidth(), image.getHeight(), null); //画文字到新的面板 outg.setColor(Color.BLACK); //字体、字型、字号 outg.setFont(new Font("宋体", Font.BOLD, 30)); int strWidth = outg.getFontMetrics().stringWidth(text); if (strWidth > 399) { String productName1 = text.substring(0, text.length() / 2); String productName2 = text.substring(text.length() / 2, text.length()); int strWidth1 = outg.getFontMetrics().stringWidth(productName1); int strWidth2 = outg.getFontMetrics().stringWidth(productName2); outg.drawString(productName1, 200 - strWidth1 / 2, image.getHeight() + (outImage.getHeight() - image.getHeight()) / 2 + 12); BufferedImage outImage2 = new BufferedImage(400, 485, BufferedImage.TYPE_4BYTE_ABGR); Graphics2D outg2 = outImage2.createGraphics(); outg2.drawImage(outImage, 0, 0, outImage.getWidth(), outImage.getHeight(), null); outg2.setColor(Color.BLACK); //字体、字型、字号 outg2.setFont(new Font("宋体", Font.BOLD, 30)); outg2.drawString(productName2, 200 - strWidth2 / 2, outImage.getHeight() + (outImage2.getHeight() - outImage.getHeight()) / 2 + 5); outg2.dispose(); outImage2.flush(); outImage = outImage2; } else { //画文字 outg.drawString(text, 200 - strWidth / 2, image.getHeight() + (outImage.getHeight() - image.getHeight()) / 2 + 12); } outg.dispose(); outImage.flush(); image = outImage; image.flush(); } } catch (Exception e) { e.printStackTrace(); } return image; } /** * 设置二维码的格式参数 * @return */ private static Map getDecodeHintType() { Map hints = new HashMap(16); hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H); hints.put(EncodeHintType.CHARACTER_SET, Constants.UTF8); hints.put(EncodeHintType.MARGIN, 0); hints.put(EncodeHintType.MAX_SIZE, 350); hints.put(EncodeHintType.MIN_SIZE, 100); return hints; } }