package QRCode; import java.awt.Color; import java.awt.Graphics2D; import java.awt.Image; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.util.Hashtable; import javax.imageio.ImageIO; import com.google.zxing.BarcodeFormat; import com.google.zxing.Binarizer; import com.google.zxing.BinaryBitmap; import com.google.zxing.DecodeHintType; 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.common.BitMatrix; import com.google.zxing.common.HybridBinarizer; import com.swetake.util.Qrcode; public class QRCodeUtil { // 二维码颜色 private static final int BLACK = 0xFF000000; // 二维码颜色 private static final int WHITE = 0xFFFFFFFF; /** * <span style="font-size:18px;font-weight:blod;">ZXing 方式生成二维码</span> * * @param text * <a href="javascript:void();">二维码内容</a> * @param width * 二维码宽 * @param height * 二维码高 * @param outPutPath * 二维码生成保存路径 * @param imageType * 二维码生成格式 */ public static void zxingCodeCreate(String text, int width, int height, String outPutPath, String imageType) { try { // 1、生成二维码 BitMatrix encode = new MultiFormatWriter().encode( new String(text.getBytes("GBK"), "ISO-8859-1"), BarcodeFormat.QR_CODE, width, height); // 2、获取二维码宽高 int codeWidth = encode.getWidth(); int codeHeight = encode.getHeight(); // 3、将二维码放入缓冲流 BufferedImage 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, encode.get(i, j) ? BLACK : WHITE); } } File outPutImage = new File(outPutPath); // 如果图片不存在创建图片 if (!outPutImage.exists()) outPutImage.createNewFile(); // 5、将二维码写入图片 ImageIO.write(image, imageType, outPutImage); System.out.println("OK"); } catch (WriterException e) { e.printStackTrace(); System.out.println("二维码生成失败"); } catch (IOException e) { e.printStackTrace(); System.out.println("生成二维码图片失败"); } } /** * <span style="font-size:18px;font-weight:blod;">二维码解析</span> * * @param analyzePath * 二维码路径 * @return * @throws IOException */ @SuppressWarnings({ "rawtypes", "unchecked" }) public static Result zxingCodeAnalyze(String analyzePath) throws Exception { MultiFormatReader formatReader = new MultiFormatReader(); Result result = null; try { File file = new File(analyzePath); if (!file.exists()) { return null; } BufferedImage image = ImageIO.read(file); LuminanceSource source = new LuminanceSourceUtil(image); // LuminanceSource source = new BufferedImageLuminanceSource(image); Binarizer binarizer = new HybridBinarizer(source); BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer); Hashtable hints = new Hashtable(); hints.put(DecodeHintType.CHARACTER_SET, "gb2312"); result = formatReader.decode(binaryBitmap, hints); String resultStr = result.getText(); System.out.println("解码内容：" + resultStr); } catch (NotFoundException e) { e.printStackTrace(); } return result; } /** * <span style="font-size:18px;font-weight:blod;">QRCode 方式生成二维码</span> * * @param content * 二维码内容 * @param imgPath * 二维码生成路径 * @param version * 二维码版本 * @param isFlag * 是否生成Logo图片 为NULL不生成 */ public static void QRCodeCreate(String content, String imgPath, int version, String logoPath) { try { Qrcode qrcodeHandler = new Qrcode(); // 设置二维码排错率，可选L(7%) M(15%) Q(25%) H(30%)，排错率越高可存储的信息越少，但对二维码清晰度的要求越小 qrcodeHandler.setQrcodeErrorCorrect('M'); // N代表数字,A代表字符a-Z,B代表其他字符 qrcodeHandler.setQrcodeEncodeMode('B'); // 版本1为21*21矩阵，版本每增1，二维码的两个边长都增4；所以版本7为45*45的矩阵；最高版本为是40，是177*177的矩阵 qrcodeHandler.setQrcodeVersion(version); // 根据版本计算尺寸 int imgSize = 67 + 12 * (version - 1); byte[] contentBytes = content.getBytes("gb2312"); BufferedImage bufImg = new BufferedImage(imgSize, imgSize, BufferedImage.TYPE_INT_RGB); Graphics2D gs = bufImg.createGraphics(); gs.setBackground(Color.WHITE); gs.clearRect(0, 0, imgSize, imgSize); // 设定图像颜色 > BLACK gs.setColor(Color.BLACK); // 设置偏移量 不设置可能导致解析出错 int pixoff = 2; // 输出内容 > 二维码 if (contentBytes.length > 0 && contentBytes.length < 130) { boolean[][] codeOut = qrcodeHandler.calQrcode(contentBytes); for (int i = 0; i < codeOut.length; i++) { for (int j = 0; j < codeOut.length; j++) { if (codeOut[j][i]) { gs.fillRect(j * 3 + pixoff, i * 3 + pixoff, 3, 3); } } } } else { System.err.println("QRCode content bytes length = " + contentBytes.length + " not in [ 0,130 ]. "); } // 判断是否需要添加logo图片 if (logoPath != null) { File icon = new File(logoPath); if (icon.exists()) { int width_4 = imgSize / 4; int width_8 = width_4 / 2; int height_4 = imgSize / 4; int height_8 = height_4 / 2; Image img = ImageIO.read(icon); gs.drawImage(img, width_4 + width_8, height_4 + height_8, width_4, height_4, null); gs.dispose(); bufImg.flush(); } else { System.out.println("Error: login图片不存在！"); } } gs.dispose(); bufImg.flush(); // 创建二维码文件 File imgFile = new File(imgPath); if (!imgFile.exists()) imgFile.createNewFile(); // 根据生成图片获取图片 String imgType = imgPath.substring(imgPath.lastIndexOf(".") + 1, imgPath.length()); // 生成二维码QRCode图片 ImageIO.write(bufImg, imgType, imgFile); } catch (Exception e) { e.printStackTrace(); } } }
引用jar分享包地址：https://pan.baidu.com/s/14A4PiAvuFqvnQc3qarSxJw