package com.hx.util; import java.awt.*; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.*; import java.util.List; import javax.imageio.ImageIO; import com.google.zxing.*; import com.google.zxing.client.j2se.BufferedImageLuminanceSource; import com.google.zxing.common.BitMatrix; import com.google.zxing.common.HybridBinarizer; import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel; public class QRCodeUtil { // 二维码颜色==黑色 private static final int BLACK = 0xFF000000; // 二维码颜色==白色 private static final int WHITE = 0xFFFFFFFF; // 二维码图片格式==jpg和png两种 private static final List IMAGE_TYPE = new ArrayList<>(); static { IMAGE_TYPE.add("jpg"); IMAGE_TYPE.add("png"); } /** * zxing方式生成二维码 * 注意： * 1,文本生成二维码的方法独立出来,返回image流的形式,可以输出到页面 * 2,设置容错率为最高,一般容错率越高,图片越不清晰, 但是只有将容错率设置高一点才能兼容logo图片 * 3,logo图片默认占二维码图片的20%,设置太大会导致无法解析 * * @param content 二维码包含的内容，文本或网址 * @param path 生成的二维码图片存放位置 * @param size 生成的二维码图片尺寸 可以自定义或者默认（250） * @param logoPath logo的存放位置 * @param autoDateFolder 在存放链接上生成日期文件夹，格式是yyyyMM */ public static String QRCodeCreate(String content, String path, Integer size, String logoPath,Boolean autoDateFolder) { try { Date newDate = new Date(); if(autoDateFolder){ if(autoDateFolder){ if(path.endsWith("/")){ path = path+dateFormat(newDate,"yyyyMM")+"/"; }else{ path = path+"/"+dateFormat(newDate,"yyyyMM")+"/"; } } } path = path+newDate.getTime()+".jpg"; //图片类型 String imageType = "jpg"; //获取二维码流的形式，写入到目录文件中 BufferedImage image = getBufferedImage(content, size, logoPath); //获得随机数 Random random = new Random(); //生成二维码存放文件 File file = new File(path); if (!file.exists()) { file.mkdirs(); } ImageIO.write(image, imageType, file); } catch (IOException e) { e.printStackTrace(); } return path; } /** * 二维码流的形式，包含文本内容 * * @param content 二维码文本内容 * @param size 二维码尺寸 * @param logoPath logo的存放位置 * @return */ public static BufferedImage getBufferedImage(String content, Integer size, String logoPath) { if (size == null || size <= 0) { size = 250; } BufferedImage image = null; try { // 设置编码字符集 Map hints = new HashMap<>(); //设置编码 hints.put(EncodeHintType.CHARACTER_SET, "UTF-8"); //设置容错率最高 hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H); hints.put(EncodeHintType.MARGIN, 1); // 1、生成二维码 MultiFormatWriter multiFormatWriter = new MultiFormatWriter(); BitMatrix bitMatrix = multiFormatWriter.encode(content, BarcodeFormat.QR_CODE, size, size, hints); // 2、获取二维码宽高 int codeWidth = bitMatrix.getWidth(); int codeHeight = bitMatrix.getHeight(); // 3、将二维码放入缓冲流 image = new BufferedImage(codeWidth, codeHeight, BufferedImage.TYPE_INT_RGB); for (int i = 0; i < codeWidth; i++) { for (int j = 0; j < codeHeight; j++) { // 4、循环将二维码内容定入图片 image.setRGB(i, j, bitMatrix.get(i, j) ? BLACK : WHITE); } } //判断是否写入logo图片 if (logoPath != null && !"".equals(logoPath)) { File logoPic = new File(logoPath); if (logoPic.exists()) { Graphics2D g = image.createGraphics(); BufferedImage logo = ImageIO.read(logoPic); int widthLogo = logo.getWidth(null) > image.getWidth() * 2 / 10 ? (image.getWidth() * 2 / 10) : logo.getWidth(null); int heightLogo = logo.getHeight(null) > image.getHeight() * 2 / 10 ? (image.getHeight() * 2 / 10) : logo.getHeight(null); 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.drawRoundRect(x, y, widthLogo, heightLogo, 15, 15); //边框宽度 g.setStroke(new BasicStroke(2)); //边框颜色 g.setColor(Color.WHITE); g.drawRect(x, y, widthLogo, heightLogo); g.dispose(); logo.flush(); image.flush(); } } } catch (WriterException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return image; } /** * 给二维码图片添加Logo * * @param qrPic 二维码图片 * @param logoPic logo图片 * @param path 合成后的图片存储目录 */ public static boolean zxingCodeCreate(File qrPic, File logoPic, String path) { try { String imageType = path.substring(path.lastIndexOf(".") + 1).toLowerCase(); if (!IMAGE_TYPE.contains(imageType)) { return false; } if (!qrPic.isFile() && !logoPic.isFile()) { return false; } //读取二维码图片，并构建绘图对象 BufferedImage image = ImageIO.read(qrPic); Graphics2D g = image.createGraphics(); //读取Logo图片 BufferedImage logo = ImageIO.read(logoPic); //设置logo的大小,最多20%0 int widthLogo = logo.getWidth(null) > image.getWidth() * 2 / 10 ? (image.getWidth() * 2 / 10) : logo.getWidth(null); int heightLogo = logo.getHeight(null) > image.getHeight() * 2 / 10 ? (image.getHeight() * 2 / 10) : logo.getHeight(null); // 计算图片放置位置，默认在中间 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.drawRoundRect(x, y, widthLogo, heightLogo, 15, 15); //边框宽度 g.setStroke(new BasicStroke(2)); //边框颜色 g.setColor(Color.WHITE); g.drawRect(x, y, widthLogo, heightLogo); g.dispose(); logo.flush(); image.flush(); File newFile = new File(path); if (!newFile.exists()) { newFile.mkdirs(); } ImageIO.write(image, imageType, newFile); return true; } catch (Exception e) { e.printStackTrace(); return false; } } /** * 二维码的解析方法 * * @param path 二维码图片目录 * @return */ public static Result zxingCodeAnalyze(String path) { try { MultiFormatReader formatReader = new MultiFormatReader(); File file = new File(path); if (file.exists()) { BufferedImage image = ImageIO.read(file); LuminanceSource source = new BufferedImageLuminanceSource(image); Binarizer binarizer = new HybridBinarizer(source); BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer); Map hints = new HashMap(); hints.put(EncodeHintType.CHARACTER_SET, "UTF-8"); Result result = formatReader.decode(binaryBitmap, hints); return result; } } catch (IOException e) { e.printStackTrace(); } catch (NotFoundException e) { e.printStackTrace(); } return null; } /** * * @param date 时间 * @param format 时间格式 * @return 返回的时间格式字符串 */ public static String dateFormat(Date date,String format) { SimpleDateFormat df = new SimpleDateFormat(format);//设置日期格式 return df.format(date); } }