yitonglei
3 years ago
parent
b10504aed5
commit
fa83300dea
12 changed files with 542 additions and 20 deletions
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package org.springblade.lims.utils.qrcode; |
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import com.google.zxing.LuminanceSource; |
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import java.awt.*; |
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import java.awt.geom.AffineTransform; |
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import java.awt.image.BufferedImage; |
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/** |
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* <pre> |
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* Created by Binary Wang on 2017-01-05. |
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* @author <a href="https://github.com/binarywang">binarywang(Binary Wang)</a> |
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* </pre> |
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*/ |
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public final class BufferedImageLuminanceSource extends LuminanceSource { |
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private final BufferedImage image; |
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private final int left; |
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private final int top; |
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public BufferedImageLuminanceSource(BufferedImage image) { |
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this(image, 0, 0, image.getWidth(), image.getHeight()); |
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} |
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public BufferedImageLuminanceSource(BufferedImage image, int left, int top, |
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int width, int height) { |
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super(width, height); |
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int sourceWidth = image.getWidth(); |
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int sourceHeight = image.getHeight(); |
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if (left + width > sourceWidth || top + height > sourceHeight) { |
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throw new IllegalArgumentException("Crop rectangle does not fit within image data."); |
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} |
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for (int y = top; y < top + height; y++) { |
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for (int x = left; x < left + width; x++) { |
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if ((image.getRGB(x, y) & 0xFF000000) == 0) { |
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image.setRGB(x, y, 0xFFFFFFFF);// = white
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} |
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} |
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} |
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this.image = new BufferedImage(sourceWidth, sourceHeight, |
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BufferedImage.TYPE_BYTE_GRAY); |
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this.image.getGraphics().drawImage(image, 0, 0, null); |
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this.left = left; |
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this.top = top; |
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} |
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@Override |
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public byte[] getRow(int y, byte[] row) { |
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if (y < 0 || y >= getHeight()) { |
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throw new IllegalArgumentException( |
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"Requested row is outside the image: " + y); |
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} |
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int width = getWidth(); |
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if (row == null || row.length < width) { |
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row = new byte[width]; |
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} |
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this.image.getRaster().getDataElements(this.left, this.top + y, width, |
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1, row); |
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return row; |
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} |
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@Override |
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public byte[] getMatrix() { |
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int width = getWidth(); |
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int height = getHeight(); |
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int area = width * height; |
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byte[] matrix = new byte[area]; |
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this.image.getRaster().getDataElements(this.left, this.top, width, |
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height, matrix); |
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return matrix; |
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} |
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@Override |
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public boolean isCropSupported() { |
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return true; |
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} |
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@Override |
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public LuminanceSource crop(int left, int top, int width, int height) { |
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return new com.github.binarywang.utils.qrcode.BufferedImageLuminanceSource(this.image, this.left + left, |
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this.top + top, width, height); |
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} |
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@Override |
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public boolean isRotateSupported() { |
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return true; |
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} |
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@Override |
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public LuminanceSource rotateCounterClockwise() { |
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int sourceWidth = this.image.getWidth(); |
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int sourceHeight = this.image.getHeight(); |
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AffineTransform transform = new AffineTransform(0.0, -1.0, 1.0, 0.0, |
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0.0, sourceWidth); |
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BufferedImage rotatedImage = new BufferedImage(sourceHeight, |
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sourceWidth, BufferedImage.TYPE_BYTE_GRAY); |
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Graphics2D g = rotatedImage.createGraphics(); |
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g.drawImage(this.image, transform, null); |
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g.dispose(); |
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int width = getWidth(); |
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return new com.github.binarywang.utils.qrcode.BufferedImageLuminanceSource(rotatedImage, this.top, |
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sourceWidth - (this.left + width), getHeight(), width); |
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} |
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} |
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@ -0,0 +1,55 @@ |
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package org.springblade.lims.utils.qrcode; |
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import com.google.zxing.common.BitMatrix; |
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import javax.imageio.ImageIO; |
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import java.awt.image.BufferedImage; |
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import java.io.File; |
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import java.io.IOException; |
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import java.io.OutputStream; |
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/** |
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* <pre> |
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* Created by Binary Wang on 2017-01-05. |
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* @author <a href="https://github.com/binarywang">binarywang(Binary Wang)</a> |
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* </pre> |
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*/ |
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public final class MatrixToImageWriter { |
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private static final int BLACK = 0xFF000000; |
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private static final int WHITE = 0xFFFFFFFF; |
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private MatrixToImageWriter() { |
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} |
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public static BufferedImage toBufferedImage(BitMatrix matrix) { |
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int width = matrix.getWidth(); |
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int height = matrix.getHeight(); |
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BufferedImage image = new BufferedImage(width, height, |
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BufferedImage.TYPE_INT_RGB); |
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for (int x = 0; x < width; x++) { |
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for (int y = 0; y < height; y++) { |
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image.setRGB(x, y, matrix.get(x, y) ? BLACK : WHITE); |
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} |
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} |
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return image; |
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} |
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public static void writeToFile(BitMatrix matrix, String format, File file) |
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throws IOException { |
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BufferedImage image = toBufferedImage(matrix); |
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if (!ImageIO.write(image, format, file)) { |
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throw new IOException("Could not write an image of format " + format + " to " + file); |
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} |
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} |
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public static void writeToStream(BitMatrix matrix, String format, OutputStream stream) |
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throws IOException { |
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BufferedImage image = toBufferedImage(matrix); |
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if (!ImageIO.write(image, format, stream)) { |
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throw new IOException("Could not write an image of format " + format); |
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} |
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} |
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} |
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@ -0,0 +1,56 @@ |
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package org.springblade.lims.utils.qrcode; |
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import java.awt.*; |
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/** |
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* <pre> |
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* Created by Binary Wang on 2017-01-05. |
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* @author <a href="https://github.com/binarywang">binarywang(Binary Wang)</a> |
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* </pre> |
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*/ |
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public class MatrixToLogoImageConfig { |
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/** |
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* logo默认边框颜色 |
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*/ |
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public static final Color DEFAULT_BORDERCOLOR = Color.WHITE; |
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/** |
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* logo默认边框宽度 |
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*/ |
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public static final int DEFAULT_BORDER = 5; |
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/** |
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* logo大小默认为照片的1/5 |
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*/ |
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public static final int DEFAULT_LOGOPART = 5; |
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private final int border; |
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private final Color borderColor; |
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private final int logoPart; |
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public MatrixToLogoImageConfig() { |
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this(DEFAULT_BORDERCOLOR, DEFAULT_LOGOPART); |
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} |
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public MatrixToLogoImageConfig(Color borderColor, int logoPart) { |
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this(borderColor, logoPart, DEFAULT_BORDER); |
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} |
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public MatrixToLogoImageConfig(Color borderColor, int logoPart, int border) { |
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this.borderColor = borderColor; |
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this.logoPart = logoPart; |
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this.border = border; |
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} |
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public Color getBorderColor() { |
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return this.borderColor; |
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} |
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public int getBorder() { |
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return this.border; |
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} |
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public int getLogoPart() { |
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return this.logoPart; |
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} |
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} |
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@ -0,0 +1,243 @@ |
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package org.springblade.lims.utils.qrcode; |
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import com.github.binarywang.utils.qrcode.BufferedImageLuminanceSource; |
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import com.github.binarywang.utils.qrcode.MatrixToImageWriter; |
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import com.github.binarywang.utils.qrcode.MatrixToLogoImageConfig; |
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import com.google.common.collect.Maps; |
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import com.google.zxing.*; |
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import com.google.zxing.common.BitMatrix; |
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import com.google.zxing.common.HybridBinarizer; |
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import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel; |
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import lombok.experimental.UtilityClass; |
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import lombok.extern.slf4j.Slf4j; |
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import javax.imageio.ImageIO; |
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import java.awt.*; |
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import java.awt.geom.RoundRectangle2D; |
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import java.awt.image.BufferedImage; |
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import java.io.*; |
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import java.nio.charset.StandardCharsets; |
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import java.nio.file.Files; |
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import java.util.Map; |
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/** |
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* <pre> |
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* Created by Binary Wang on 2017-01-05. |
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* @author <a href="https://github.com/binarywang">binarywang(Binary Wang)</a> |
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* </pre> |
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*/ |
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@Slf4j |
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@UtilityClass |
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public class QrcodeUtils { |
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/** |
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* 生成二维码的默认边长，因为是正方形的，所以高度和宽度一致 |
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*/ |
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private static final int DEFAULT_LENGTH = 400; |
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/** |
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* 生成二维码的格式 |
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*/ |
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private static final String FORMAT = "jpg"; |
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/** |
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* 根据内容生成二维码数据 |
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* |
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* @param content 二维码文字内容[为了信息安全性，一般都要先进行数据加密] |
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* @param length 二维码图片宽度和高度 |
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*/ |
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public static BitMatrix createQrcodeMatrix(String content, int length) { |
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return createQrcodeMatrix(content, length, ErrorCorrectionLevel.H); |
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} |
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public static BitMatrix createQrcodeMatrix(String content, int length, ErrorCorrectionLevel level) { |
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Map<EncodeHintType, Object> hints = Maps.newEnumMap(EncodeHintType.class); |
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// 设置字符编码
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hints.put(EncodeHintType.CHARACTER_SET, StandardCharsets.UTF_8.name()); |
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// 指定纠错等级
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hints.put(EncodeHintType.ERROR_CORRECTION, level); |
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try { |
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return new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, length, length, hints); |
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} catch (WriterException e) { |
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throw new RuntimeException("内容为：【" + content + "】的二维码生成失败！", e); |
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} |
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} |
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/** |
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* 根据指定边长创建生成的二维码，允许配置logo属性 |
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* |
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* @param content 二维码内容 |
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* @param length 二维码的高度和宽度 |
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* @param logoFile logo 文件对象，可以为空 |
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* @param logoConfig logo配置，可设置logo展示长宽，边框颜色 |
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* @return 二维码图片的字节数组 |
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*/ |
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public static byte[] createQrcode(String content, int length, File logoFile, MatrixToLogoImageConfig logoConfig) |
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throws Exception { |
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if (logoFile != null && !logoFile.exists()) { |
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throw new IllegalArgumentException("请提供正确的logo文件！"); |
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} |
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try (InputStream logo = logoFile == null ? null : new FileInputStream(logoFile)) { |
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return createQrcode(content, length, logo, logoConfig); |
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} |
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} |
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public static byte[] createQrcode(String content, int length, InputStream logo, MatrixToLogoImageConfig logoConfig) throws Exception { |
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BufferedImage img = generateQRCodeImage(content, length, logo, logoConfig); |
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ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
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ImageIO.write(img, FORMAT, baos); |
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return baos.toByteArray(); |
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} |
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/** |
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* 根据指定边长创建生成的二维码 |
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* |
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* @param content 二维码内容 |
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* @param length 二维码的高度和宽度 |
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* @param logoFile logo 文件对象，可以为空 |
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* @return 二维码图片的字节数组 |
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*/ |
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public static byte[] createQrcode(String content, int length, File logoFile) throws Exception { |
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return createQrcode(content, length, logoFile, new MatrixToLogoImageConfig()); |
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} |
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/** |
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* 创建生成默认高度(400)的二维码图片 |
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* 可以指定是否贷logo |
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* |
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* @param content 二维码内容 |
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* @param logoFile logo 文件对象，可以为空 |
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* @return 二维码图片的字节数组 |
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*/ |
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public static byte[] createQrcode(String content, File logoFile) throws Exception { |
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return createQrcode(content, DEFAULT_LENGTH, logoFile); |
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} |
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public static BufferedImage generateQRCodeImage(String content, int length, InputStream logo, MatrixToLogoImageConfig logoConfig) throws Exception { |
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// 生成二维码图像
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BitMatrix qrCodeMatrix = createQrcodeMatrix(content, length); |
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BufferedImage img = MatrixToImageWriter.toBufferedImage(qrCodeMatrix); |
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try { |
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if (logo != null) { |
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overlapImage(img, FORMAT, logo, logoConfig); |
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} |
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} catch (Exception e) { |
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throw new RuntimeException("为二维码添加LOGO时失败！", e); |
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} |
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return img; |
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} |
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public static BufferedImage generateQRCodeImage(String content, int length, File logoFile, MatrixToLogoImageConfig logoConfig) throws Exception { |
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if (logoFile != null && !logoFile.exists()) { |
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throw new IllegalArgumentException("请提供正确的logo文件！"); |
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} |
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try (InputStream logo = Files.newInputStream(logoFile.toPath())) { |
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return generateQRCodeImage(content, length, logo, logoConfig); |
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} |
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} |
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public static BufferedImage generateQRCodeImage(String content, int length, InputStream logo) throws Exception { |
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return generateQRCodeImage(content, length, logo, new MatrixToLogoImageConfig()); |
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} |
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public static BufferedImage generateQRCodeImage(String content, int length, File logoFile) throws Exception { |
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return generateQRCodeImage(content, length, logoFile, new MatrixToLogoImageConfig()); |
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} |
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public static BufferedImage generateQRCodeImage(String content, InputStream logo) throws Exception { |
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return generateQRCodeImage(content, DEFAULT_LENGTH, logo); |
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} |
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public static BufferedImage generateQRCodeImage(String content, File logoFile) throws Exception { |
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return generateQRCodeImage(content, DEFAULT_LENGTH, logoFile); |
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} |
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/** |
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* 将logo添加到二维码中间 |
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* |
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* @param image 生成的二维码图片对象 |
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* @param logo logo文件对象 |
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* @param ignoredFormat 图片格式 |
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*/ |
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private static void overlapImage(final BufferedImage image, String ignoredFormat, final InputStream logo, |
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MatrixToLogoImageConfig logoConfig) throws IOException { |
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BufferedImage logoImg = ImageIO.read(logo); |
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logoImg = clipRound(logoImg); |
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Graphics2D g = logoImg.createGraphics(); |
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// 考虑到logo图片贴到二维码中，建议大小不要超过二维码的1/5;
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int width = image.getWidth() / logoConfig.getLogoPart(); |
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int height = image.getHeight() / logoConfig.getLogoPart(); |
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int radius = width / 10; |
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// logo起始位置，此目的是为logo居中显示
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int x = (image.getWidth() - width) / 2; |
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int y = (image.getHeight() - height) / 2; |
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// 创建一个支持有透明度的图像缓冲区
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BufferedImage buffer = g.getDeviceConfiguration().createCompatibleImage(image.getWidth(), image.getHeight(), Transparency.TRANSLUCENT); |
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g.dispose(); |
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// 绘制阴影
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g = buffer.createGraphics(); |
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g.setComposite(AlphaComposite.getInstance(AlphaComposite.XOR, 0.1f)); |
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g.setColor(Color.BLACK); |
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g.fillRoundRect(x + 10, y + 10, width - 20, height, radius, radius); |
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g.dispose(); |
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// 绘制LOGO到缓冲区
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g = buffer.createGraphics(); |
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g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC, 1)); |
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g.drawImage(logoImg, x, y, width, height, null); |
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// 给logo画边框
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// 构造一个具有指定线条宽度以及 cap 和 join 风格的默认值的实心 BasicStroke
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g.setStroke(new BasicStroke(logoConfig.getBorder())); |
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g.setColor(logoConfig.getBorderColor()); |
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g.drawRoundRect(x, y, width, height, radius, radius); |
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g.setStroke(new BasicStroke(1)); |
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g.setColor(Color.GRAY); |
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g.drawRoundRect(x + logoConfig.getBorder() / 2, y + logoConfig.getBorder() / 2, width - logoConfig.getBorder(), |
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height - logoConfig.getBorder(), radius, radius); |
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g.dispose(); |
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// 将带阴影的图像绘制到二维码上
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g = image.createGraphics(); |
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g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, 1.0f)); |
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g.drawImage(buffer, 0, 0, image.getWidth(), image.getHeight(), null); |
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g.dispose(); |
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} |
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/** |
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* 为LOGO剪出圆角 |
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* |
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* @param srcImage LOGO图像 |
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*/ |
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private static BufferedImage clipRound(BufferedImage srcImage) { |
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int width = srcImage.getWidth(); |
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int height = srcImage.getHeight(); |
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int radius = width / 10; |
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BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); |
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Graphics2D g = image.createGraphics(); |
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g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); |
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g.setClip(new RoundRectangle2D.Double(0, 0, width, height, radius, radius)); |
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g.drawImage(srcImage, 0, 0, null); |
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g.dispose(); |
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return image; |
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} |
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/** |
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* 解析二维码 |
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* |
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* @param file 二维码文件内容 |
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* @return 二维码的内容 |
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*/ |
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public static String decodeQrcode(File file) throws IOException, NotFoundException { |
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BufferedImage image = ImageIO.read(file); |
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LuminanceSource source = new BufferedImageLuminanceSource(image); |
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Binarizer binarizer = new HybridBinarizer(source); |
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BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer); |
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Map<DecodeHintType, Object> hints = Maps.newEnumMap(DecodeHintType.class); |
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hints.put(DecodeHintType.CHARACTER_SET, StandardCharsets.UTF_8.name()); |
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return new MultiFormatReader().decode(binaryBitmap, hints).getText(); |
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} |
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} |
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