1、此爲二維碼中不內嵌圖片 import com.google.zxing.*; import com.google.zxing.common.BitMatrix; import com.google.zxing.common.HybridBinarizer; import com.zhaogang.util.threadsafe.ThreadSafeDateUtil; import org.apache.commons.lang3.StringUtils; import javax.imageio.ImageIO; import java.awt.image.BufferedImage; import java.io.File; import java.io.FileInputStream; import java.io.OutputStream; import java.util.Date; import java.util.HashMap; /** * 生成二維碼圖片不內嵌圖片 * Created by S.Han on 2016-11-22. */ public class QrCodeNoImageUtil { //二維碼圖片寬 private static final int QRCODE_WIDTH = 300; //二維碼圖片高 private static final int QRCODE_HEIGHT = 300; /** * 生成二維碼保存在指定路徑 * * @param _text 二維碼內容 * @param qrcodeFormat 生成的二維碼圖片格式 * @param saveFilePath 生成的二維碼圖片保存路徑 例如:F:/23/ * @return */ public static File createQrcode(String _text, String qrcodeFormat, String saveFilePath) { try { BitMatrix bitMatrix = getBitMatrix(_text); String date = ThreadSafeDateUtil.format(new Date(), "yyyyMMddHHmmss"); File qrCodeFile = new File(saveFilePath + "S_Han_" + date + "." + qrcodeFormat); if (StringUtils.isNotBlank(saveFilePath)) { if (!qrCodeFile.getParentFile().exists()) { qrCodeFile.mkdirs(); } } BufferedImage image = MatrixToImageWriter.toBufferedImage(bitMatrix); //將二維碼圖片做爲文件輸出 ImageIO.write(image, qrcodeFormat, qrCodeFile); return qrCodeFile; } catch (Exception e) { e.printStackTrace(); return null; } } /** * 建立二維碼圖片並做爲輸出流中輸入 * * @param _text 二維碼內容 * @param qrcodeFormat 二維碼圖片格式 * @param output 輸出流 */ public static void createQrCodeToOutStream(String _text, String qrcodeFormat, OutputStream output) { try { BitMatrix bitMatrix = getBitMatrix(_text); //向輸出流中輸出 MatrixToImageWriter.writeToStream(bitMatrix, qrcodeFormat, output); } catch (Exception e) { e.printStackTrace(); } } private static BitMatrix getBitMatrix(String _text) throws WriterException { HashMap<EncodeHintType, String> hints = new HashMap<>(); hints.put(EncodeHintType.CHARACTER_SET, "UTF-8"); return new MultiFormatWriter().encode(_text, BarcodeFormat.QR_CODE, QRCODE_WIDTH, QRCODE_HEIGHT, hints); } /** * 給定指定的二維碼文件解析出二維碼裏內容 * * @param filePath 二維碼文件存放路徑 * @return */ public static String decodeQr(String filePath) { String retStr = ""; if ("".equalsIgnoreCase(filePath) && filePath.length() == 0) { return "二維碼圖片路徑爲空!"; } try { BufferedImage bufferedImage = ImageIO.read(new FileInputStream(filePath)); LuminanceSource source = new BufferedImageLuminanceSource(bufferedImage); Binarizer binarizer = new HybridBinarizer(source); BinaryBitmap bitmap = new BinaryBitmap(binarizer); HashMap<DecodeHintType, Object> hintTypeObjectHashMap = new HashMap<>(); hintTypeObjectHashMap.put(DecodeHintType.CHARACTER_SET, "UTF-8"); Result result = new MultiFormatReader().decode(bitmap, hintTypeObjectHashMap); retStr = result.getText(); } catch (Exception e) { e.printStackTrace(); } return retStr; } public static void main(String[] args) { File qrCodeFile = createQrcode("我喜歡你!!!", "jpg", "F:/test/qrCode/"); System.err.println("二維碼文件名稱:" + qrCodeFile.getName()); System.err.println("二維碼文件保存路徑:" + qrCodeFile.getAbsoluteFile()); } }
2、二維碼中內嵌圖片java
package com.zhaogang.util.marketing; import com.google.zxing.BarcodeFormat; import com.google.zxing.EncodeHintType; import com.google.zxing.MultiFormatWriter; import com.google.zxing.WriterException; import com.google.zxing.common.BitMatrix; import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel; import javax.imageio.ImageIO; import java.awt.*; import java.awt.geom.AffineTransform; import java.awt.image.AffineTransformOp; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; /** * 生成內嵌圖片二維碼圖片 * Created by S.Han on 2016-11-22 */ public class QrCodeWithImageUtil { // 圖片寬度的通常 private static final int IMAGE_WIDTH = 15; private static final int IMAGE_HEIGHT = 15; private static final int IMAGE_HALF_WIDTH = IMAGE_WIDTH / 2; private static final int FRAME_WIDTH = 2; // 二維碼寫碼器 private static MultiFormatWriter mutiWriter = new MultiFormatWriter(); /** * @param content 二維碼顯示的文本 * @param width 二維碼的寬度 * @param height 二維碼的高度 * @param srcImagePath 中間嵌套的圖片 * @param destImagePath 二維碼生成的地址 */ public static void encode(String content, int width, int height, String srcImagePath, String destImagePath) { try { // ImageIO.write 參數 一、BufferedImage 二、輸出的格式 三、輸出的文件 ImageIO.write(genBarcode(content, width, height, srcImagePath), "jpg", new File(destImagePath)); } catch (IOException e) { e.printStackTrace(); } catch (WriterException e) { e.printStackTrace(); } } /** * 獲得BufferedImage * * @param content 二維碼顯示的文本 * @param width 二維碼的寬度 * @param height 二維碼的高度 * @param srcImagePath 中間嵌套的圖片 * @return * @throws WriterException * @throws IOException */ private static BufferedImage genBarcode(String content, int width, int height, String srcImagePath) throws WriterException, IOException { // 讀取源圖像 BufferedImage scaleImage = scale(srcImagePath, IMAGE_WIDTH, IMAGE_HEIGHT, false); int[][] srcPixels = new int[IMAGE_WIDTH][IMAGE_HEIGHT]; for (int i = 0; i < scaleImage.getWidth(); i++) { for (int j = 0; j < scaleImage.getHeight(); j++) { srcPixels[i][j] = scaleImage.getRGB(i, j); } } java.util.Hashtable hint = new java.util.Hashtable(); hint.put(EncodeHintType.CHARACTER_SET, "utf-8"); hint.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H); // 生成二維碼 BitMatrix matrix = mutiWriter.encode(content, BarcodeFormat.QR_CODE, width, height, hint); // 二維矩陣轉爲一維像素數組 int halfW = matrix.getWidth() / 2; int halfH = matrix.getHeight() / 2; int[] pixels = new int[width * height]; // System.out.println(matrix.getHeight()); for (int y = 0; y < matrix.getHeight(); y++) { for (int x = 0; x < matrix.getWidth(); x++) { // 讀取圖片 if (x > halfW - IMAGE_HALF_WIDTH && x < halfW + IMAGE_HALF_WIDTH && y > halfH - IMAGE_HALF_WIDTH && y < halfH + IMAGE_HALF_WIDTH) { pixels[y * width + x] = srcPixels[x - halfW + IMAGE_HALF_WIDTH][y - halfH + IMAGE_HALF_WIDTH]; } // 在圖片四周造成邊框 else if ((x > halfW - IMAGE_HALF_WIDTH - FRAME_WIDTH && x < halfW - IMAGE_HALF_WIDTH + FRAME_WIDTH && y > halfH - IMAGE_HALF_WIDTH - FRAME_WIDTH && y < halfH + IMAGE_HALF_WIDTH + FRAME_WIDTH) || (x > halfW + IMAGE_HALF_WIDTH - FRAME_WIDTH && x < halfW + IMAGE_HALF_WIDTH + FRAME_WIDTH && y > halfH - IMAGE_HALF_WIDTH - FRAME_WIDTH && y < halfH + IMAGE_HALF_WIDTH + FRAME_WIDTH) || (x > halfW - IMAGE_HALF_WIDTH - FRAME_WIDTH && x < halfW + IMAGE_HALF_WIDTH + FRAME_WIDTH && y > halfH - IMAGE_HALF_WIDTH - FRAME_WIDTH && y < halfH - IMAGE_HALF_WIDTH + FRAME_WIDTH) || (x > halfW - IMAGE_HALF_WIDTH - FRAME_WIDTH && x < halfW + IMAGE_HALF_WIDTH + FRAME_WIDTH && y > halfH + IMAGE_HALF_WIDTH - FRAME_WIDTH && y < halfH + IMAGE_HALF_WIDTH + FRAME_WIDTH)) { pixels[y * width + x] = 0xfffffff; } else { // 此處能夠修改二維碼的顏色,能夠分別制定二維碼和背景的顏色; pixels[y * width + x] = matrix.get(x, y) ? 0xff000000 : 0xfffffff; } } } BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); image.getRaster().setDataElements(0, 0, width, height, pixels); return image; } /** * 把傳入的原始圖像按高度和寬度進行縮放,生成符合要求的圖標 * * @param srcImageFile 源文件地址 * @param height 目標高度 * @param width 目標寬度 * @param hasFiller 比例不對時是否須要補白:true爲補白; false爲不補白; * @throws IOException */ private static BufferedImage scale(String srcImageFile, int height, int width, boolean hasFiller) throws IOException { double ratio = 0.0; // 縮放比例 File file = new File(srcImageFile); BufferedImage srcImage = ImageIO.read(file); Image destImage = srcImage.getScaledInstance(width, height, BufferedImage.SCALE_SMOOTH); // 計算比例 if ((srcImage.getHeight() > height) || (srcImage.getWidth() > width)) { if (srcImage.getHeight() > srcImage.getWidth()) { ratio = (new Integer(height)).doubleValue() / srcImage.getHeight(); } else { ratio = (new Integer(width)).doubleValue() / srcImage.getWidth(); } AffineTransformOp op = new AffineTransformOp(AffineTransform.getScaleInstance(ratio, ratio), null); destImage = op.filter(srcImage, null); } if (hasFiller) {// 補白 BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); Graphics2D graphic = image.createGraphics(); graphic.setColor(Color.white); graphic.fillRect(0, 0, width, height); if (width == destImage.getWidth(null)) { graphic.drawImage(destImage, 0, (height - destImage.getHeight(null)) / 2, destImage.getWidth(null), destImage.getHeight(null), Color.white, null); } else { graphic.drawImage(destImage, (width - destImage.getWidth(null)) / 2, 0, destImage.getWidth(null), destImage.getHeight(null), Color.white, null); } graphic.dispose(); destImage = image; } return (BufferedImage) destImage; } public static void main(String[] args) { encode("你好", 85, 85, "D:\\ToolKitImage.jpg", "D:\\2013-01.jpg"); }
備註1:MatrixToImageWriter 爲Google提供,現源碼以下apache
import com.google.zxing.common.BitMatrix; import javax.imageio.ImageIO; import java.io.File; import java.io.OutputStream; import java.io.IOException; import java.awt.image.BufferedImage; /** * Created by S.Han on 2016-11-22. */ public final class MatrixToImageWriter { private static final int BLACK = 0xFF000000; private static final int WHITE = 0xFFFFFFFF; private MatrixToImageWriter() { } 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 < width; x++) { for (int y = 0; y < height; y++) { image.setRGB(x, y, matrix.get(x, y) ? BLACK : WHITE); } } return image; } public static void writeToFile(BitMatrix matrix, String format, File file) throws IOException { BufferedImage image = toBufferedImage(matrix); if (!ImageIO.write(image, format, file)) { throw new IOException("Could not write an image of format " + format + " to " + file); } } public static void writeToStream(BitMatrix matrix, String format, OutputStream stream) throws IOException { BufferedImage image = toBufferedImage(matrix); if (!ImageIO.write(image, format, stream)) { throw new IOException("Could not write an image of format " + format); } } }
備註2:BufferedImageLuminanceSource 由Google提供.源碼以下數組
import com.google.zxing.LuminanceSource; import java.awt.Graphics2D; import java.awt.geom.AffineTransform; import java.awt.image.BufferedImage; /** * Created by S.Han on 2016-11-22. */ public final class BufferedImageLuminanceSource extends LuminanceSource { private final BufferedImage image; private final int left; private final int top; public BufferedImageLuminanceSource(BufferedImage image) { this(image, 0, 0, image.getWidth(), image.getHeight()); } public BufferedImageLuminanceSource(BufferedImage image, int left, int top, int width, int height) { super(width, height); int sourceWidth = image.getWidth(); int sourceHeight = image.getHeight(); if (left + width > sourceWidth || top + height > sourceHeight) { throw new IllegalArgumentException("Crop rectangle does not fit within image data."); } for (int y = top; y < top + height; y++) { for (int x = left; x < left + width; x++) { if ((image.getRGB(x, y) & 0xFF000000) == 0) { image.setRGB(x, y, 0xFFFFFFFF); // = white } } } this.image = new BufferedImage(sourceWidth, sourceHeight, BufferedImage.TYPE_BYTE_GRAY); this.image.getGraphics().drawImage(image, 0, 0, null); this.left = left; this.top = top; } @Override public byte[] getRow(int y, byte[] row) { if (y < 0 || y >= getHeight()) { throw new IllegalArgumentException("Requested row is outside the image: " + y); } int width = getWidth(); if (row == null || row.length < width) { row = new byte[width]; } image.getRaster().getDataElements(left, top + y, width, 1, row); return row; } @Override public byte[] getMatrix() { int width = getWidth(); int height = getHeight(); int area = width * height; byte[] matrix = new byte[area]; image.getRaster().getDataElements(left, top, width, height, matrix); return matrix; } @Override public boolean isCropSupported() { return true; } @Override public LuminanceSource crop(int left, int top, int width, int height) { return new BufferedImageLuminanceSource(image, this.left + left, this.top + top, width, height); } @Override public boolean isRotateSupported() { return true; } @Override public LuminanceSource rotateCounterClockwise() { int sourceWidth = image.getWidth(); int sourceHeight = image.getHeight(); AffineTransform transform = new AffineTransform(0.0, -1.0, 1.0, 0.0, 0.0, sourceWidth); BufferedImage rotatedImage = new BufferedImage(sourceHeight, sourceWidth, BufferedImage.TYPE_BYTE_GRAY); Graphics2D g = rotatedImage.createGraphics(); g.drawImage(image, transform, null); g.dispose(); int width = getWidth(); return new BufferedImageLuminanceSource(rotatedImage, top, sourceWidth - (left + width), getHeight(), width); } }