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+package com.platform.yijia.utils;
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+
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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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+
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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.File;
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+import java.io.IOException;
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+import java.util.Hashtable;
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+
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+/**
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+ * <Title> QRcodeUtils </Title>
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+ * <description>二维码生成: 使用Google.ZXing工具包生成二维码图片</description>
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+ * @author JK
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+ * @date 2019年11月4日
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+ */
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+public class QRcodeUtils {
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+
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+ //防止中文乱码
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+ private static final String CHARSET = "utf-8";
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+ //格式
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+ private static final String FORMAT_NAME = "JPG";
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+ //设置二维码尺寸
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+ private static final int QRCODE_SIZE = 150;
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+ //设置logo宽度
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+ private static final int WIDTH = 40;
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+ //设置logo高度
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+ private static final int HEIGHT =40;
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+
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+ /****
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+ * 生成含有二维码的图片
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+ * @param file 底层图片
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+ * @param x 距离左上角的X偏移量
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+ * @param y 距离左上角的Y偏移量
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+ * @param alpha 透明度, 选择值从0.0~1.0: 完全透明~完全不透明
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+ * @param content 二维码内容
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+ * @param logoImgPath logo图片地址:不用logo可以为null
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+ * @param savePath 生成含有二维码的保存路径
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+ * @param needCompress logo图片数否需要压缩
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+ * @param id 活动id
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+ * @param inviteesId 邀请人id
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+ * @return
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+ * @throws IOException
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+ * @throws WriterException
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+ */
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+ public static String imgContainQRcode(File file, int x, int y, float alpha, String content, String logoImgPath, String savePath, boolean needCompress,Integer id,String inviteesId) throws IOException, WriterException {
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+ //读取底层图片
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+ BufferedImage bufferedImage = ImageIO.read(file);
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+ //获取二维码图片
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+ BufferedImage qrCodeImg = QRcodeUtils.createImage(content, logoImgPath, needCompress);
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+ //在底图上开始绘图
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+ Graphics2D graphics2D = bufferedImage.createGraphics();
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+ //获取二维码高宽度
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+ int height = qrCodeImg.getHeight();
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+ int width = qrCodeImg.getWidth();
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+ //实现俩张图片混合
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+ graphics2D.drawImage(qrCodeImg, x, y, height, width, null);
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+ graphics2D.dispose();
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+
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+ //判断保存路径文件夹是否存在
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+ File f = new File(savePath);
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+ if(!f.exists() && !f.isDirectory()){
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+ f.mkdir();
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+ }
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+ //使用时间戳命名新和成的图片
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+ //file.getName();
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+ //String strFile = System.currentTimeMillis() + ".jpg";
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+ String strFile = id+inviteesId + ".jpg";
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+
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+ ImageIO.write(bufferedImage, FORMAT_NAME, new File(savePath + "/" + strFile));
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+ return strFile;
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+ }
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+ /*****
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+ * 生成内嵌logo二维码到指定保存路径
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+ * 若生成无logo二维码则设置imgLogoPath为null即可
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+ * @param content 内容
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+ * @param imgLogoPath logo图片获取地址
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+ * @param savePath 生成有logo二维码图片存放地址
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+ * @param needCompress 是否压缩logo图片
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+ * @throws IOException
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+ * @throws WriterException
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+ */
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+ public static void encode(String content, String imgLogoPath, String savePath, boolean needCompress) throws IOException, WriterException {
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+
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+ QRcodeUtils.createImage(content, imgLogoPath, needCompress);
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+ File file = new File(savePath);
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+ //判断保存路径文件夹是否存在
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+ if(!file.exists() && !file.isDirectory()){
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+ file.mkdir();
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+ }
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+ //使用时间戳命名
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+ String strFile = System.currentTimeMillis() + ".jpg";
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+ ImageIO.write(QRcodeUtils.createImage(content, imgLogoPath, needCompress), FORMAT_NAME, new File(savePath + "/" + strFile));
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+ }
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+
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+
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+ /***
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+ * 生成含有logo二维码图片
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+ * @param content :内容
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+ * @param imgPath :logo地址
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+ * @param needCompress :是否压缩
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+ * @return
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+ * @throws WriterException
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+ * @throws IOException
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+ */
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+ private static BufferedImage createImage(String content, String imgPath, boolean needCompress) throws WriterException, IOException {
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+ Hashtable<EncodeHintType, Object> hint = new Hashtable<EncodeHintType, Object>();
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+ hint.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
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+ //设置编码
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+ hint.put(EncodeHintType.CHARACTER_SET, CHARSET);
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+ hint.put(EncodeHintType.MARGIN, 1);
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+ BitMatrix bitMatrix =
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+ new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, QRCODE_SIZE, QRCODE_SIZE, hint);
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+ //创建图片
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+ BufferedImage image =
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+ new BufferedImage(bitMatrix.getWidth(), bitMatrix.getHeight(), BufferedImage.TYPE_INT_RGB);
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+ for(int i=0; i< bitMatrix.getWidth(); i++){
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+ for (int j=0; j<bitMatrix.getHeight(); j++){
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+ image.setRGB(i, j, bitMatrix.get(i, j) ? 0xFF000000 : 0xFFFFFFFF);
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+ }
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+ }
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+ if(imgPath == null || imgPath.equals("")){
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+ return image;
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+ }
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+ //插入logo图片
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+ QRcodeUtils.insertLogoImage(image, imgPath, needCompress);
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+ return image;
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+ }
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+
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+ /****
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+ * 插入logo图片
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+ * @param bufferedImage :二维码图片
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+ * @param imageLogoPath :LOGO图片地址
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+ * @param needCompress :是否压缩
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+ * @throws IOException
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+ */
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+ public static void insertLogoImage(BufferedImage bufferedImage, String imageLogoPath, boolean needCompress) throws IOException {
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+ //创建File对象
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+ File file = new File(imageLogoPath);
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+ if(!file.exists()){
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+ System.err.println(imageLogoPath+" 该图片不存在!");
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+ return;
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+ }
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+ Image imageLogo = ImageIO.read(file);
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+ int width = imageLogo.getWidth(null);
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+ int height = imageLogo.getHeight(null);
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+ //压缩Logo
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+ if(needCompress){
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+ if(width > WIDTH){
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+ width =WIDTH;
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+ }
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+ if (height > HEIGHT){
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+ height = HEIGHT;
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+ }
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+ //开始绘制logo图片
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+ Image image = imageLogo.getScaledInstance(width, height, Image.SCALE_SMOOTH);
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+ BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
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+ Graphics graphics = bi.getGraphics();
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+ graphics.drawImage(image, 0, 0, null);
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+ graphics.dispose();
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+ imageLogo = image;
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+ }
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+ //插入logo
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+ Graphics2D graphics2D = bufferedImage.createGraphics();
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+ int x = (QRCODE_SIZE - width)/2;
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+ int y = (QRCODE_SIZE - height)/2;
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+ graphics2D.drawImage(imageLogo, x, y, width, height, null);
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+ Shape shape = new RoundRectangle2D.Float(x, y, width, height, 6, 6);
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+ graphics2D.setStroke(new BasicStroke(3f));
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+ graphics2D.draw(shape);
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+ graphics2D.dispose();
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+
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+ }
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+
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+}
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jk-GitHub-coder