Java zxing生成条形码和二维吗代码实例

  com.google.zxingcore3.3.3 com.google.zxingjavase3.3.3

 package code; import com.google.zxing.*; import com.google.zxing.common.BitMatrix; import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel; import org.apache.commons.codec.binary.Base64; import org.apache.commons.codec.binary.Base64OutputStream; import javax.imageio.ImageIO; import java.awt.*; import java.awt.image.BufferedImage; import java.io.*; import java.util.HashMap; import java.util.Map; public class QRCodeKit { public static final String QRCODE_DEFAULT_CHARSET = "UTF-8"; public static final int QRCODE_DEFAULT_HEIGHT = 300; public static final int QRCODE_DEFAULT_WIDTH = 300; private static final int BLACK = 0xFF000000; private static final int WHITE = 0xFFFFFFFF; public static void main(String[] args) throws IOException, NotFoundException { String data = "https://www.jianshu.com/p/748aa03cc1e8?ddd=dsdsdsdsddsdsdsdsdsdsdsdsd"; File logoFile = new File("C:/1.png-600"); BufferedImage image = QRCodeKit.createQRCodeWithLogo(data, logoFile); ImageIO.write(image, "png", new File("D:/result7.png-600")); System.out.println("done"); } /** * Create qrcode with default settings * * @param data * @return * @author stefli */ public static BufferedImage createQRCode(String data) { return createQRCode(data, QRCODE_DEFAULT_WIDTH, QRCODE_DEFAULT_HEIGHT); } /** * Create qrcode with default charset * * @param data * @param width * @param height * @return * @author stefli */ public static BufferedImage createQRCode(String data, int width, int height) { return createQRCode(data, QRCODE_DEFAULT_CHARSET, width, height); } /** * Create qrcode with specified charset * * @param data * @param charset * @param width * @param height * @return * @author stefli */ public static BufferedImage createQRCode(String data, String charset, int width, int height) { Map hint = new HashMap(); hint.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H); hint.put(EncodeHintType.CHARACTER_SET, charset); return createQRCode(data, charset, hint, width, height); } /** * Create qrcode with specified hint * * @param data * @param charset * @param hint * @param width * @param height * @return * @author stefli */ public static BufferedImage createQRCode(String data, String charset, Map hint, int width, int height) { BitMatrix matrix; try { matrix = new MultiFormatWriter().encode(new String(data.getBytes(charset), charset), BarcodeFormat.QR_CODE, width, height, hint); return toBufferedImage(matrix); } catch (WriterException e) { throw new RuntimeException(e.getMessage(), e); } catch (Exception e) { throw new RuntimeException(e.getMessage(), e); } } /** * toBufferedImage * * @param matrix * @return */ public static BufferedImage toBufferedImage(BitMatrix matrix) { int width = matrix.getWidth(); int height = matrix.getHeight(); BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); for (int x = 0; x  hint, int width, int height, File logoFile) { try { BufferedImage qrcode = createQRCode(data, charset, hint, width, height); BufferedImage logo = ImageIO.read(logoFile); BufferedImage combined = new BufferedImage(height, width, BufferedImage.TYPE_INT_ARGB); Graphics2D g = (Graphics2D) combined.getGraphics(); //设置二维码大小，太大，会覆盖二维码，此处20% int logoWidth = logo.getWidth() > qrcode.getWidth() * 2 / 10 ? (qrcode.getWidth() * 2 / 10) : logo.getWidth(); int logoHeight = logo.getHeight() > qrcode.getHeight() * 2 / 10 ? (qrcode.getHeight() * 2 / 10) : logo.getHeight(); //设置logo图片放置位置--中心 int x = Math.round((qrcode.getWidth() - logoWidth) / 2); int y = Math.round((qrcode.getHeight() - logoHeight) / 2); g.drawImage(qrcode, 0, 0, null); g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 1f)); //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(3)); //logo边框颜色 g.setColor(Color.white); g.drawRoundRect(x, y, logoWidth, logoHeight, 15, 15); g.dispose(); logo.flush(); qrcode.flush(); return combined; } catch (IOException e) { throw new RuntimeException(e.getMessage(), e); } catch (Exception e) { throw new RuntimeException(e.getMessage(), e); } } /** * Return base64 for image * * @param image * @return * @author stefli */ public static String getImageBase64String(BufferedImage image) { String result = null; try { ByteArrayOutputStream os = new ByteArrayOutputStream(); OutputStream b64 = new Base64OutputStream(os); ImageIO.write(image, "png", b64); result = os.toString("UTF-8"); } catch (UnsupportedEncodingException e) { throw new RuntimeException(e.getMessage(), e); } catch (IOException e) { throw new RuntimeException(e.getMessage(), e); } return result; } /** * Decode the base64Image data to image * * @param base64ImageString * @param file * @author stefli */ public static void convertBase64StringToImage(String base64ImageString, File file) { FileOutputStream os; try { Base64 d = new Base64(); byte[] bs = d.decode(base64ImageString); os = new FileOutputStream(file.getAbsolutePath()); os.write(bs); os.close(); } catch (FileNotFoundException e) { throw new RuntimeException(e.getMessage(), e); } catch (IOException e) { throw new RuntimeException(e.getMessage(), e); } catch (Exception e) { throw new RuntimeException(e.getMessage(), e); } } }

 import java.awt.Color; import java.awt.Font; import java.awt.Graphics2D; import java.awt.image.BufferedImage; import java.io.ByteArrayOutputStream; import java.io.File; import java.util.Arrays; import java.util.Date; import java.util.HashMap; import java.util.Map; import javax.imageio.ImageIO; import org.apache.commons.codec.binary.Base64; import org.apache.commons.io.IOUtils; import org.apache.commons.lang.StringUtils; 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.Result; import com.google.zxing.WriterException; import com.google.zxing.client.j2se.BufferedImageLuminanceSource; import com.google.zxing.client.j2se.MatrixToImageConfig; import com.google.zxing.common.BitMatrix; import com.google.zxing.common.HybridBinarizer; import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel; /** * ZXing二维码生成/解码 */ public class ZXingCode { public static void main(String[] args) throws WriterException { try { String logoPath = "F:/logo.jpg-600"; String logo_savePath = "F:/" + new Date().getTime() + ".png-600"; String str = toQRCode("http://blog.csdn.net/phil_jing", logoPath, logo_savePath, "CSDN博客"); System.out.println("finished zxing QRcode encode."); System.out.println(Arrays.toString(Base64.decodeBase64(str))); } catch (Exception e) { e.printStackTrace(); } } /** * 生成二维码图片 * @param content * @param logoPath * @param savePath * @param remark * @return */ public static String toQRCode(String content, String logoPath, String savePath, String remark) { int width = 400, height = 400; try { BufferedImage bim = toBufferedImage(content, BarcodeFormat.QR_CODE, width, height, toDecodeHintType()); return encode(bim, logoPath, savePath, new LogoConfig(), remark); } catch (Exception e) { e.printStackTrace(); } return null; } /** * 是否需要给二维码图片添加Logo * @param bim * @param logoPath * @param savePath * @param logoConfig * @param remark * @return */ private static String encode(BufferedImage bim, String logoPath, String savePath, LogoConfig logoConfig, String remark) { ByteArrayOutputStream baos = null; try { /** * 读取二维码图片 */ BufferedImage image = bim; if(StringUtils.isBlank(logoPath)){ //不需要添加logo baos = new ByteArrayOutputStream(); baos.flush(); ImageIO.write(image, "png", baos);//流输出 //ImageIO.write(bim, "png", new File(savePath));//直接写入某路径，本地测试加上 return Base64.encodeBase64URLSafeString(baos.toByteArray());//Encodes binary data using a URL-safe variation of the base64 algorithm } /** * 构建绘图对象 */ Graphics2D g = image.createGraphics(); /** * 读取Logo图片 */ BufferedImage logo = ImageIO.read(new File(logoPath)); /** * 设置logo的大小,设置为二维码图片的20%,因为过大会盖掉二维码 */ 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; /** * logo放在右下角 int x = (image.getWidth() - widthLogo); int y = (image.getHeight() - heightLogo); */ // 开始绘制图片 g.drawImage(logo, x, y, widthLogo, heightLogo, null); // g.drawRoundRect(x, y, widthLogo, heightLogo, 15, 15); // g.setStroke(new BasicStroke(logoConfig.getBorder())); // g.setColor(logoConfig.getBorderColor()); // g.drawRect(x, y, widthLogo, heightLogo); g.dispose(); // 把备注添加上去，备注不要太长超过两行会自动截取 if ( StringUtils.isNotBlank(remark)){ // 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); outg.setFont(new Font("微软雅黑", Font.BOLD, 30)); // 字体、字型、字号 int strWidth = outg.getFontMetrics().stringWidth(remark); if (strWidth > 399) { // //长度过长就截取前面部分 // outg.drawString(productName, 0, image.getHeight() + // (outImage.getHeight() - image.getHeight())/2 + 5 ); //画文字 String productName1 = remark.substring(0, remark.length() / 2); String productName2 = remark.substring(remark.length() / 2, remark.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); outg2.setFont(new Font("微软雅黑", Font.BOLD, 30)); // 字体、字型、字号 outg2.drawString(productName2, 200 - strWidth2 / 2, outImage.getHeight() + (outImage2.getHeight() - outImage.getHeight()) / 2 + 5); outg2.dispose(); outImage2.flush(); outImage = outImage2; } else { outg.drawString(remark, 200 - strWidth / 2, image.getHeight() + (outImage.getHeight() - image.getHeight()) / 2 + 12); // 画文字 } outg.dispose(); outImage.flush(); image = outImage; } logo.flush(); image.flush(); baos = new ByteArrayOutputStream(); baos.flush(); ImageIO.write(image, "png", baos); //不用MatrixToImageWriter //ImageIO.write(image, "png", new File(savePath));//直接写入某路径 return Base64.encodeBase64URLSafeString(baos.toByteArray()); } catch (Exception e) { e.printStackTrace(); } finally { IOUtils.closeQuietly(baos); } return null; } /** * 生成二维码bufferedImage图片 * @param content 编码内容 * @param barcodeFormat 编码类型 * @param width 图片宽度 * @param height 图片高度 * @param hints 设置参数 * @return */ private static BufferedImage toBufferedImage(String content, BarcodeFormat barcodeFormat, int width, int height, Map hints) { MultiFormatWriter multiFormatWriter = null; BitMatrix bitMatrix = null; BufferedImage image = null; 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 bitMatrix = multiFormatWriter.encode(content, barcodeFormat, width, height, hints); int w = bitMatrix.getWidth(); int h = bitMatrix.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  toDecodeHintType() { // 用于设置QR二维码参数 Map hints = new HashMap(); // 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);//Only applicable to Data Matrix now //hints.put(EncodeHintType.MIN_SIZE, 100);//Only applicable to Data Matrix now return hints; } /** * 二维码解码 * * @param imgPath * @return */ public static String decode(String imgPath) { BufferedImage image = null; Result result = null; try { File file = new File(imgPath); image = ImageIO.read(file); if (image == null) { System.out.println("the decode image may be not exit."); } LuminanceSource source = new BufferedImageLuminanceSource(image); BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source)); Map hints = new HashMap(); hints.put(DecodeHintType.CHARACTER_SET, "UTF-8"); result = new MultiFormatReader().decode(bitmap, hints); return result.getText(); } catch (Exception e) { e.printStackTrace(); } return null; } } /** * Logo图片配置 */ class LogoConfig { // logo默认边框颜色 public static final Color DEFAULT_BORDERCOLOR = Color.WHITE; // logo默认边框宽度 public static final int DEFAULT_BORDER = 2; // logo大小默认为照片的1/5 public static final int DEFAULT_LOGOPART = 5; private final int border = DEFAULT_BORDER; private final Color borderColor; private final int logoPart; /** * Creates a default config with on color {@link #BLACK} and off color * {@link #WHITE}, generating normal black-on-white barcodes. */ public LogoConfig() { this(DEFAULT_BORDERCOLOR, DEFAULT_LOGOPART); } public LogoConfig(Color borderColor, int logoPart) { this.borderColor = borderColor; this.logoPart = logoPart; } public Color getBorderColor() { return borderColor; } public int getBorder() { return border; } public int getLogoPart() { return logoPart; } }

 import java.awt.image.BufferedImage; import java.io.File; import javax.imageio.ImageIO; import com.google.zxing.BarcodeFormat; import com.google.zxing.BinaryBitmap; import com.google.zxing.LuminanceSource; import com.google.zxing.MultiFormatReader; import com.google.zxing.MultiFormatWriter; import com.google.zxing.Result; 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; /** * ZXing条形码编码/解码 */ public class ZxingCode { /** * 条形码编码 * * @param contents * @param width * @param height * @param imgPath */ public static void encode(String contents, int width, int height, String imgPath) { int codeWidth = 3 + // start guard (7 * 6) + // left bars + // middle guard (7 * 6) + // right bars 3; // end guard codeWidth = Math.max(codeWidth, width); try { BitMatrix bitMatrix = new MultiFormatWriter().encode(contents,BarcodeFormat.EAN_13, codeWidth, height, null); MatrixToImageWriter.writeToFile(bitMatrix, "png", new File(imgPath)); } catch (Exception e) { e.printStackTrace(); } } /** * 条形码解码 * * @param imgPath * @return String */ public static String decode(String imgPath) { BufferedImage image = null; Result result = null; try { image = ImageIO.read(new File(imgPath)); if (image == null) { System.out.println("the decode image may be not exit."); } LuminanceSource source = new BufferedImageLuminanceSource(image); BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source)); result = new MultiFormatReader().decode(bitmap, null); return result.getText(); } catch (Exception e) { e.printStackTrace(); } return null; } /** * @param args */ public static void main(String[] args) { String imgPath = "F:/zxing_EAN-13.png-600"; String contents = "6926557300360"; int width = 105, height = 50; encode(contents, width, height, imgPath); System.out.println("finished zxing EAN-13 encode."); String decodeContent = decode(imgPath); System.out.println("解码内容如下：" + decodeContent); System.out.println("finished zxing EAN-13 decode."); } }