package com.stylefeng.guns.core.qr;
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import com.google.zxing.BarcodeFormat;
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import com.google.zxing.EncodeHintType;
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import com.google.zxing.MultiFormatWriter;
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import com.google.zxing.WriterException;
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import com.google.zxing.common.BitMatrix;
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import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import javax.imageio.ImageIO;
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import java.awt.*;
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import java.awt.geom.AffineTransform;
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import java.awt.image.AffineTransformOp;
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import java.awt.image.BufferedImage;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* 内嵌图片的二维码生成器
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*
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* @author lichunxi
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*/
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public class ImgQrTool {
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private static Logger log = LoggerFactory.getLogger(ImgQrTool.class);
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// 镶嵌的图片宽度的一般
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private static final int IMAGE_WIDTH = 80;
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private static final int IMAGE_HEIGHT = 80;
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private static final int IMAGE_HALF_WIDTH = IMAGE_WIDTH / 2;
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private static final int FRAME_WIDTH = 2;
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// 二维码写码器
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private static MultiFormatWriter mutiWriter = new MultiFormatWriter();
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/**
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* 生成带图片的二维码
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*
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* @param content 二维码的内容
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* @param width 宽度
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* @param height 高度
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* @param srcImagePath 被镶嵌的图片的地址
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* @param destImagePath 生成二维码图片的地址
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* @author fengshuonan
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* @since 2.3.0
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*/
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public static void encode(String content, int width, int height, String srcImagePath, String destImagePath) {
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try {
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ImageIO.write(genBarcode(content, width, height, srcImagePath), "jpg", new File(destImagePath));
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} catch (IOException e) {
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e.printStackTrace();
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} catch (WriterException e) {
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e.printStackTrace();
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}
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}
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/**
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* 生成带图片的二维码
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*
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* @param content 二维码的内容
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* @param width 宽度
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* @param height 高度
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* @param srcImagePath 被镶嵌的图片的地址
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* @author fengshuonan
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* @since 2.3.0
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*/
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public static void encode(String content, int width, int height, String srcImagePath, OutputStream outputStream) {
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try {
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ImageIO.write(genBarcode(content, width, height, srcImagePath), "jpg", outputStream);
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} catch (IOException e) {
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e.printStackTrace();
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} catch (WriterException e) {
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e.printStackTrace();
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}
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}
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/**
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* 创建不带参数的二维码
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*
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* @author fengshuonan
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* @since 2.3.0
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*/
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public static void createSimpleQr(String content, int width, int height, String destImagePath) {
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FileOutputStream output = null;
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try {
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String format = "jpg";// 图像类型
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Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();
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hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
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BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height, hints);// 生成矩阵
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File dest = new File(destImagePath);
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output = new FileOutputStream(dest);
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MatrixToImageWriter.writeToStream(bitMatrix, format, output);// 输出图像
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} catch (Exception e) {
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log.error("生成二维码出错！ImgQrTool：createSimpleQr()", e);
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} finally {
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try {
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output.close();
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} catch (IOException e) {
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log.error("生成二维码出错！ImgQrTool：createSimpleQr()", e);
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}
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}
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}
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private static BufferedImage genBarcode(String content, int width, int height, String srcImagePath)
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throws WriterException, IOException {
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// 读取源图像
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BufferedImage scaleImage = scale(srcImagePath, IMAGE_WIDTH, IMAGE_HEIGHT, true);
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int[][] srcPixels = new int[IMAGE_WIDTH][IMAGE_HEIGHT];
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for (int i = 0; i < scaleImage.getWidth(); i++) {
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for (int j = 0; j < scaleImage.getHeight(); j++) {
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srcPixels[i][j] = scaleImage.getRGB(i, j);
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}
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}
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Map<EncodeHintType, Object> hint = new HashMap<EncodeHintType, Object>();
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hint.put(EncodeHintType.CHARACTER_SET, "utf-8");
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hint.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
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hint.put(EncodeHintType.MARGIN, 1);// 二维码整体白框
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// 生成二维码
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BitMatrix matrix = mutiWriter.encode(content, BarcodeFormat.QR_CODE, width, height, hint);
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// 二维矩阵转为一维像素数组
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int halfW = matrix.getWidth() / 2;
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int halfH = matrix.getHeight() / 2;
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int[] pixels = new int[width * height];
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for (int y = 0; y < matrix.getHeight(); y++) {
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for (int x = 0; x < matrix.getWidth(); x++) {
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// 读取图片
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if (x > halfW - IMAGE_HALF_WIDTH && x < halfW + IMAGE_HALF_WIDTH && y > halfH - IMAGE_HALF_WIDTH
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&& y < halfH + IMAGE_HALF_WIDTH) {
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pixels[y * width + x] = srcPixels[x - halfW + IMAGE_HALF_WIDTH][y - halfH + IMAGE_HALF_WIDTH];
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}
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// 在图片四周形成边框
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else if ((x > halfW - IMAGE_HALF_WIDTH - FRAME_WIDTH && x < halfW - IMAGE_HALF_WIDTH + FRAME_WIDTH
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&& y > halfH - IMAGE_HALF_WIDTH - FRAME_WIDTH && y < halfH + IMAGE_HALF_WIDTH + FRAME_WIDTH)
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|| (x > halfW + IMAGE_HALF_WIDTH - FRAME_WIDTH && x < halfW + IMAGE_HALF_WIDTH + FRAME_WIDTH
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&& y > halfH - IMAGE_HALF_WIDTH - FRAME_WIDTH
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&& y < halfH + IMAGE_HALF_WIDTH + FRAME_WIDTH)
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|| (x > halfW - IMAGE_HALF_WIDTH - FRAME_WIDTH && x < halfW + IMAGE_HALF_WIDTH + FRAME_WIDTH
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&& y > halfH - IMAGE_HALF_WIDTH - FRAME_WIDTH
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&& y < halfH - IMAGE_HALF_WIDTH + FRAME_WIDTH)
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|| (x > halfW - IMAGE_HALF_WIDTH - FRAME_WIDTH && x < halfW + IMAGE_HALF_WIDTH + FRAME_WIDTH
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&& y > halfH + IMAGE_HALF_WIDTH - FRAME_WIDTH
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&& y < halfH + IMAGE_HALF_WIDTH + FRAME_WIDTH)) {
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pixels[y * width + x] = 0xfffffff;
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} else {
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// 此处可以修改二维码的颜色，可以分别制定二维码和背景的颜色；
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pixels[y * width + x] = matrix.get(x, y) ? 0xff000000 : 0xfffffff;
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}
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}
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}
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BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
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image.getRaster().setDataElements(0, 0, width, height, pixels);
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return image;
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}
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/**
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* 把传入的原始图像按高度和宽度进行缩放，生成符合要求的图标
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*
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* @param srcImageFile 源文件地址
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* @param height 目标高度
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* @param width 目标宽度
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* @param hasFiller 比例不对时是否需要补白：true为补白; false为不补白;
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* @throws IOException
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*/
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private static BufferedImage scale(String srcImageFile, int height, int width, boolean hasFiller)
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throws IOException {
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double ratio = 0.0; // 缩放比例
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File file = new File(srcImageFile);
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BufferedImage srcImage = ImageIO.read(file);
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Image destImage = srcImage.getScaledInstance(width, height, BufferedImage.SCALE_SMOOTH);
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// 计算比例
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if ((srcImage.getHeight() > height) || (srcImage.getWidth() > width)) {
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if (srcImage.getHeight() > srcImage.getWidth()) {
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ratio = (new Integer(height)).doubleValue() / srcImage.getHeight();
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} else {
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ratio = (new Integer(width)).doubleValue() / srcImage.getWidth();
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}
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AffineTransformOp op = new AffineTransformOp(AffineTransform.getScaleInstance(ratio, ratio), null);
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destImage = op.filter(srcImage, null);
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}
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if (hasFiller) {// 补白
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BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
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Graphics2D graphic = image.createGraphics();
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graphic.setColor(Color.white);
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graphic.fillRect(0, 0, width, height);
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if (width == destImage.getWidth(null))
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graphic.drawImage(destImage, 0, (height - destImage.getHeight(null)) / 2, destImage.getWidth(null),
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destImage.getHeight(null), Color.white, null);
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else
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graphic.drawImage(destImage, (width - destImage.getWidth(null)) / 2, 0, destImage.getWidth(null),
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destImage.getHeight(null), Color.white, null);
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graphic.dispose();
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destImage = image;
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}
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return (BufferedImage) destImage;
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}
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/**
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* 生成上方带文字的二维码
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*/
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public static void createQrWithFontsAbove(QrImage para) {
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try {
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// 首先生成二维码图片
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BufferedImage qrImage = genBarcode(para.getQrContent(), para.getQrWidth(), para.getQrHeight(), para.getQrIconFilePath());
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int qrImageWidth = qrImage.getWidth();
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int qrImageHeight = qrImage.getHeight();
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String[] splitStrLines = null;
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splitStrLines = splitStrLines(para.getWordContent(), qrImageWidth / para.getWordSize());
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int fontsImageHeight = splitStrLines.length * para.getWordSize() + 10; //防止文字遮挡
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//创建顶部文字的图片
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BufferedImage imageWithFonts = new BufferedImage(qrImageWidth, fontsImageHeight, BufferedImage.TYPE_4BYTE_ABGR);
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Graphics fontsImageGraphics = imageWithFonts.getGraphics();
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fontsImageGraphics.fillRect(0, 0, qrImageWidth, fontsImageHeight);
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fontsImageGraphics.setColor(Color.black);
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fontsImageGraphics.setFont(new Font("宋体", Font.PLAIN, para.getWordSize()));
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//文字长度大于一行的长度，进行分行
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if (para.getWordContent().length() > qrImageWidth / para.getWordSize()) {//每行限制的文字个数
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for (int i = 0; i < splitStrLines.length; i++) {
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fontsImageGraphics.drawString(splitStrLines[i], 0, para.getWordSize() * (i + 1));
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}
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} else {
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fontsImageGraphics.drawString(
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para.getWordContent(),
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((qrImageWidth / para.getWordSize() - para.getWordContent().length()) / 2) * para.getWordSize() + 20, //总长度减去字长度除以2为向右偏移长度
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para.getWordSize());
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}
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// 从图片中读取RGB
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int[] ImageArrayFonts = new int[qrImageWidth * fontsImageHeight];
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ImageArrayFonts = imageWithFonts.getRGB(0, 0, qrImageWidth, fontsImageHeight, ImageArrayFonts, 0, qrImageWidth);
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int[] ImageArrayQr = new int[qrImageWidth * qrImageHeight];
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ImageArrayQr = qrImage.getRGB(0, 0, qrImageWidth, qrImageHeight, ImageArrayQr, 0, qrImageWidth);
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// 生成新图片
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BufferedImage ImageNew = new BufferedImage(qrImageWidth, qrImageHeight + fontsImageHeight, BufferedImage.TYPE_INT_RGB);
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ImageNew.setRGB(0, 0, qrImageWidth, fontsImageHeight, ImageArrayFonts, 0, qrImageWidth);// 设置上半部分的RGB
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ImageNew.setRGB(0, fontsImageHeight, qrImageWidth, qrImageHeight, ImageArrayQr, 0, qrImageWidth);// 设置下半部分的RGB
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File outFile = new File(para.getFileOutputPath());
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ImageIO.write(ImageNew, "jpg", outFile);
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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/**
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* 一行字符串拆分成多行
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*/
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private static String[] splitStrLines(String str, int len) {
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int blocks = str.length() / len + 1;
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String[] strs = new String[blocks];
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for (int i = 0; i < blocks; i++) {
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if ((i + 1) * len > str.length()) {
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strs[i] = str.substring(i * len);
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} else {
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strs[i] = str.substring(i * len, (i + 1) * len);
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}
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}
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return strs;
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}
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public static void main(String[] args) throws IOException {
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for (int i = 1; i <= 1; i++) {
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QrImage para = new QrImage.Builder()
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.setFileOutputPath("D:\\二维码\\test\\" + i + ".jpg")
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.setQrContent("http://www.baidu.com?a=" + "123")
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.setQrHeight(300)
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.setQrWidth(300)
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.setQrIconFilePath("D:\\二维码\\中间图标\\1.png")
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.setTopWrodHeight(100)
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.setWordContent("test" + 1)
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.setWordSize(18).build();
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ImgQrTool.createQrWithFontsAbove(para);
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}
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}
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}
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