/*
* create QR code with overlay
*/
public static void createQRCode(
String qrCodeData,
String outputFilePath,
String overlayFilePath,
String charset,
Map<EncodeHintType, ErrorCorrectionLevel> hintMap,
int qrCodeheight,
int qrCodewidth)
throws WriterException, IOException {
// create QR code <BufferedImage>
QRCodeWriter qrWriter = new QRCodeWriter();
BitMatrix matrix =
qrWriter.encode(qrCodeData, BarcodeFormat.QR_CODE, qrCodewidth, qrCodeheight, hintMap);
BufferedImage image = MatrixToImageWriter.toBufferedImage(matrix);
// read overlay image
BufferedImage overlay = ImageIO.read(new File(overlayFilePath));
// Draw the new image
int deltaHeight = image.getHeight() - overlay.getHeight();
int deltaWidth = image.getWidth() - overlay.getWidth();
BufferedImage combined =
new BufferedImage(qrCodeheight, qrCodewidth, BufferedImage.TYPE_INT_ARGB);
Graphics2D g = (Graphics2D) combined.getGraphics();
g.drawImage(image, 0, 0, null);
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 1f));
g.drawImage(overlay, (int) Math.round(deltaWidth / 2), (int) Math.round(deltaHeight / 2), null);
ImageIO.write(combined, "PNG", new File(outputFilePath));
}
private List<BufferedImage> exportSplitCompress(String s) throws IOException, WriterException {
final QRCodeWriter writer = new QRCodeWriter();
final int multiple = 1;
final Hashtable hints = new Hashtable();
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
final Compression comp = new CompressionZlib();
final byte data[] = comp.compress(s.getBytes("UTF-8"));
final List<BufferedImage> result = new ArrayList<BufferedImage>();
final List<byte[]> blocs = new ArrayList<byte[]>();
for (int i = 0; i < 4; i++) {
blocs.add(getSplited(data, i, 4));
}
blocs.add(xor(blocs));
for (byte d[] : blocs) {
// Encoder.DEFAULT_BYTE_MODE_ENCODING
final BitMatrix bit =
writer.encode(new String(d, "ISO-8859-1"), BarcodeFormat.QR_CODE, multiple);
result.add(MatrixToImageWriter.toBufferedImage(bit));
}
return Collections.unmodifiableList(result);
}
/**
* 写入二维码、以及将照片logo写入二维码中
*
* @param matrix 要写入的二维码
* @param format 二维码照片格式
* @param imagePath 二维码照片保存路径
* @param logoPath logo路径
* @throws IOException
*/
@SuppressWarnings({"deprecation"})
public static void writeToFile(BitMatrix matrix, String format, String imagePath, String logoPath)
throws IOException {
MatrixToImageWriter.writeToFile(matrix, format, new File(imagePath), new MatrixToImageConfig());
// 添加logo图片, 此处一定需要重新进行读取，而不能直接使用二维码的BufferedImage 对象
BufferedImage img = ImageIO.read(new File(imagePath));
MatrixToImageWriterEx.overlapImage(img, format, imagePath, logoPath, DEFAULT_CONFIG);
}
public static BufferedImage toImage(String content, int width, int height) {
try {
BitMatrix bitMatrix =
new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height);
return MatrixToImageWriter.toBufferedImage(bitMatrix);
} catch (WriterException e) {
throw new RuntimeException(e);
}
}
private List<BufferedImage> exportFlashcodeSimple(String s) throws IOException, WriterException {
final QRCodeWriter writer = new QRCodeWriter();
final int multiple = 1;
final Hashtable hints = new Hashtable();
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
final BitMatrix bit = writer.encode(s, BarcodeFormat.QR_CODE, multiple);
final BufferedImage im = MatrixToImageWriter.toBufferedImage(bit);
return Arrays.asList(im);
}
/**
* 生成二维码
*
* @param content 条码文本内容
* @param width 条码宽度
* @param height 条码高度
* @param fileType 文件类型，如png
* @param savePath 保存路径
*/
@SuppressWarnings({"rawtypes", "unchecked", "deprecation"})
public static void encode(
String content, int width, int height, String fileType, String savePath) {
try {
content = new String(content.getBytes(ToolString.encoding), ToolString.encoding); // 二维码内容
Hashtable hints = new Hashtable();
hints.put(EncodeHintType.CHARACTER_SET, ToolString.encoding);
BitMatrix bitMatrix =
new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height, hints);
File file = new File(savePath);
MatrixToImageWriter.writeToFile(bitMatrix, fileType, file);
} catch (Exception e) {
e.printStackTrace();
}
}
private List<BufferedImage> exportFlashcodeCompress(String s)
throws IOException, WriterException {
final QRCodeWriter writer = new QRCodeWriter();
final int multiple = 1;
final Hashtable hints = new Hashtable();
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
final Compression comp = new CompressionZlib();
final byte data[] = comp.compress(s.getBytes("UTF-8"));
// Encoder.DEFAULT_BYTE_MODE_ENCODING
final BitMatrix bit =
writer.encode(new String(data, "ISO-8859-1"), BarcodeFormat.QR_CODE, multiple);
final BufferedImage im = MatrixToImageWriter.toBufferedImage(bit);
return Arrays.asList(im);
}
public static BufferedImage toSingleQrCodeBufferedImage(
String s, ErrorCorrectionLevel ec, int scaleFactor) throws WriterException {
QRCode qrCode = new QRCode();
Encoder.encode(s, ec, qrCode);
BufferedImage bufferedImage = MatrixToImageWriter.toBufferedImage(qrCode.getMatrix());
if (scaleFactor != 1) {
int newWidth = bufferedImage.getWidth() * scaleFactor;
int newHeight = bufferedImage.getHeight() * scaleFactor;
Image image = bufferedImage.getScaledInstance(newWidth, newHeight, Image.SCALE_FAST);
bufferedImage = ImageIoUtils.toBufferedImage(image);
}
return (bufferedImage);
}
/**
* 二维码编码
*
* @param contents
* @param width
* @param height
* @param imgPath
*/
public static void encode2(String contents, int width, int height, String imgPath) {
Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
// 指定纠错等级
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
// 指定编码格式
hints.put(EncodeHintType.CHARACTER_SET, "GBK");
try {
BitMatrix bitMatrix =
new MultiFormatWriter().encode(contents, BarcodeFormat.QR_CODE, width, height, hints);
MatrixToImageWriter.writeToFile(bitMatrix, "png", new File(imgPath));
} catch (Exception e) {
e.printStackTrace();
}
}
public static void setCode() throws Exception {
String filePath = "/home/static/images/";
String fileName = "dcn.png";
JSONObject json = new JSONObject();
json.put("dcn", "http://kf.d.cn");
// String content = json.toJSONString();
String content = "http://kf.d.cn";
int width = 200;
int height = 200;
String format = "png";
Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();
hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
BitMatrix bitMatrix =
new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height, hints);
Path path = FileSystems.getDefault().getPath(filePath, fileName);
MatrixToImageWriter.writeToPath(bitMatrix, format, path);
}
/*
* create simple QR code
*/
public static void createQRCode(
String qrCodeData,
String filePath,
String charset,
int qrCodeheight,
int qrCodewidth,
Map<EncodeHintType, ?> hintEncodeMap)
throws WriterException, IOException {
BitMatrix matrix =
new MultiFormatWriter()
.encode(
new String(qrCodeData.getBytes(charset), charset),
BarcodeFormat.QR_CODE,
qrCodewidth,
qrCodeheight,
hintEncodeMap);
ImageIO.write(MatrixToImageWriter.toBufferedImage(matrix), "PNG", new File(filePath));
}
/**
* 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
5 + // 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();
}
}
/** @param args */
public static void main(String[] args) {
Charset charset = Charset.forName("UTF-8");
CharsetEncoder encoder = charset.newEncoder();
byte[] b = null;
try {
// Convert a string to UTF-8 bytes in a ByteBuffer
ByteBuffer bbuf = encoder.encode(CharBuffer.wrap("http://www.google.co.in/"));
b = bbuf.array();
} catch (CharacterCodingException e) {
System.out.println(e.getMessage());
}
String data;
try {
data = new String(b, "UTF-8");
// get a byte matrix for the data
BitMatrix matrix = null;
ByteMatrix byteMatrix = null;
int h = 100;
int w = 100;
com.google.zxing.Writer writer = new MultiFormatWriter();
try {
Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>(2);
hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
matrix = writer.encode(data, com.google.zxing.BarcodeFormat.QR_CODE, w, h, hints);
} catch (com.google.zxing.WriterException e) {
System.out.println(e.getMessage());
}
// change this path to match yours (this is my mac home folder, you can use: c:\\qr_png.png if
// you are on windows)
String filePath = "D:\\CreateQR.JPG";
File file = new File(filePath);
try {
MatrixToImageWriter.writeToFile(matrix, "JPG", file);
System.out.println("printing to " + file.getAbsolutePath());
} catch (IOException e) {
System.out.println(e.getMessage());
}
} catch (UnsupportedEncodingException e) {
System.out.println(e.getMessage());
}
}
/**
* Generate a QR code with the payment information of a given size, optionally, with branding
*
* @param size A size of the QR code (without the branding) in pixels
* @param paymentString A SPAYD string with payment information
* @param hasBranging A flag that can be used to turn on/off branding
* @return An image with the payment QR code
* @throws IOException
*/
public static BufferedImage getQRCode(Integer size, String paymentString, boolean hasBranging)
throws IOException {
if (size == null) {
size = SpaydConstants.defQRSize;
} else if (size < SpaydConstants.minQRSize) {
size = SpaydConstants.minQRSize;
} else if (size > SpaydConstants.maxQRSize) {
size = SpaydConstants.maxQRSize;
}
BitMatrix matrix = null;
int h = size;
int w = size;
int barsize = -1;
Writer writer = new MultiFormatWriter();
try {
Map<EncodeHintType, Object> hints = new EnumMap<EncodeHintType, Object>(EncodeHintType.class);
hints.put(EncodeHintType.CHARACTER_SET, "ISO-8859-1");
QRCode code = Encoder.encode(paymentString, ErrorCorrectionLevel.M, hints);
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
barsize = size / (code.getMatrix().getWidth() + 8);
matrix = writer.encode(paymentString, com.google.zxing.BarcodeFormat.QR_CODE, w, h, hints);
} catch (com.google.zxing.WriterException e) {
System.out.println(e.getMessage());
}
if (matrix == null || barsize < 0) {
throw new InvalidFormatException();
}
BufferedImage image = MatrixToImageWriter.toBufferedImage(matrix);
if (hasBranging) {
Graphics2D g = (Graphics2D) image.getGraphics();
BasicStroke bs = new BasicStroke(2);
g.setStroke(bs);
g.setColor(Color.BLACK);
g.drawLine(0, 0, w, 0);
g.drawLine(0, 0, 0, h);
g.drawLine(w, 0, w, h);
g.drawLine(0, h, w, h);
String str = "QR Platba";
int fontSize = size / 12;
g.setFont(new Font("Verdana", Font.BOLD, fontSize));
FontMetrics fm = g.getFontMetrics();
Rectangle2D rect = fm.getStringBounds(str, g);
g.setColor(Color.WHITE);
g.fillRect(
2 * barsize,
h - fm.getAscent(),
(int) rect.getWidth() + 4 * barsize,
(int) rect.getHeight());
int padding = 4 * barsize;
BufferedImage paddedImage =
new BufferedImage(w + 2 * padding, h + padding + (int) rect.getHeight(), image.getType());
Graphics2D g2 = paddedImage.createGraphics();
g2.setRenderingHint(
RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_GASP);
g2.setFont(new Font("Verdana", Font.BOLD, fontSize));
g2.setPaint(Color.WHITE);
g2.fillRect(0, 0, paddedImage.getWidth(), paddedImage.getHeight());
g2.drawImage(image, padding, padding, Color.WHITE, null);
g2.setColor(Color.BLACK);
g2.drawString(str, padding + 4 * barsize, (int) (padding + h + rect.getHeight() - barsize));
image = paddedImage;
}
return image;
}
