1.循环生成多张二维码

for (int i = 1; i <= 1000; i++) {
      String code = UUID.randomUUID().toString().toUpperCase().replaceAll("-", "");     BottleSn bottleSn = new BottleSn();     bottleSn.setCode(code);     bottleSnRepository.save(bottleSn);     QRCodeUtil.generateQRImage("http://pangtun.silver-fortune.com.cn/h5/trackbottle/" + code, "D:/Pic/logo-pangtun.png", "D:/Pic/Picture/", i + ".png", "png"); } 2.工具类

package com.sfec.snmgr.track.utils; import java.awt.Color; import java.awt.Graphics2D; import java.awt.Image; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.util.Hashtable; import javax.imageio.ImageIO; import com.google.zxing.BarcodeFormat; import com.google.zxing.EncodeHintType; import com.google.zxing.MultiFormatWriter; import com.google.zxing.client.j2se.MatrixToImageConfig; import com.google.zxing.client.j2se.MatrixToImageWriter; import com.google.zxing.common.BitMatrix; import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel; import com.sfec.snmgr.track.vo.QRCodeParams; public class QRCodeUtil {
      private static int width = 120;              //二维码宽度     private static int height = 120;             //二维码高度     private static int onColor = 0xFF000000;     //前景色     private static int offColor = 0xFFFFFFFF;    //背景色     private static int margin = 1;               //白边大小，取值范围0~4     private static ErrorCorrectionLevel level = ErrorCorrectionLevel.L;  //二维码容错率     /**      * 生成二维码      * @param params      * QRCodeParams属性：txt、fileName、filePath不得为空；      */     public static void generateQRImage(QRCodeParams params)throws Exception{
          if(params == null                 || params.getFileName() == null                 || params.getFilePath() == null                 || params.getTxt() == null){
              throw new Exception("参数错误");         }         try{
              initData(params);             String imgPath = params.getFilePath();             String imgName = params.getFileName();             String txt = params.getTxt();             if(params.getLogoPath() != null && !"".equals(params.getLogoPath().trim())){
                  generateQRImage(txt, params.getLogoPath(), imgPath, imgName, params.getSuffixName());             }else{
                  generateQRImage(txt, imgPath, imgName, params.getSuffixName());             }         }catch(Exception e){
              e.printStackTrace();         }     }     /**      * 生成二维码      * @param txt          //二维码内容      * @param imgPath      //二维码保存物理路径      * @param imgName      //二维码文件名称      * @param suffix       //图片后缀名      */     public static void generateQRImage(String txt, String imgPath, String imgName, String suffix){
          File filePath = new File(imgPath);         if(!filePath.exists()){
              filePath.mkdirs();         }         File imageFile = new File(imgPath,imgName);         Hashtable
    
      hints = new Hashtable
     
      ();         // 指定纠错等级         hints.put(EncodeHintType.ERROR_CORRECTION, level);         // 指定编码格式         hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");         hints.put(EncodeHintType.MARGIN, margin);   //设置白边         try {
              MatrixToImageConfig config = new MatrixToImageConfig(onColor, offColor);             BitMatrix bitMatrix = new MultiFormatWriter().encode(txt,BarcodeFormat.QR_CODE, width, height, hints); //         bitMatrix = deleteWhite(bitMatrix);             MatrixToImageWriter.writeToPath(bitMatrix, suffix, imageFile.toPath(), config);         } catch (Exception e) {
              e.printStackTrace();         }     }     /**      * 生成带logo的二维码图片      * @param txt          //二维码内容      * @param logoPath     //logo绝对物理路径      * @param imgPath      //二维码保存绝对物理路径      * @param imgName      //二维码文件名称      * @param suffix       //图片后缀名      * @throws Exception      */     public static void generateQRImage(String txt, String logoPath, String imgPath, String imgName, String suffix) throws Exception{
          File filePath = new File(imgPath);         if(!filePath.exists()){
              filePath.mkdirs();         }         if(imgPath.endsWith("/")){
              imgPath += imgName;         }else{
              imgPath += "/"+imgName;         }         Hashtable
      
        hints = new Hashtable
       
        ();         hints.put(EncodeHintType.CHARACTER_SET, "utf-8");         hints.put(EncodeHintType.ERROR_CORRECTION, level);         hints.put(EncodeHintType.MARGIN, margin);  //设置白边         BitMatrix bitMatrix = new MultiFormatWriter().encode(txt, BarcodeFormat.QR_CODE, width, height, hints);         File qrcodeFile = new File(imgPath);         writeToFile(bitMatrix, suffix, qrcodeFile, logoPath);     }     /**      *      * @param matrix 二维码矩阵相关      * @param format 二维码图片格式      * @param file 二维码图片文件      * @param logoPath logo路径      * @throws IOException      */     public static void writeToFile(BitMatrix matrix,String format,File file,String logoPath) throws IOException {
          BufferedImage image = toBufferedImage(matrix);         Graphics2D gs = image.createGraphics();         int ratioWidth = image.getWidth()*2/10;         int ratioHeight = image.getHeight()*2/10;         //载入logo         Image img = ImageIO.read(new File(logoPath));         int logoWidth = img.getWidth(null)>ratioWidth?ratioWidth:img.getWidth(null);         int logoHeight = img.getHeight(null)>ratioHeight?ratioHeight:img.getHeight(null);         int x = (image.getWidth() - logoWidth) / 2;         int y = (image.getHeight() - logoHeight) / 2;         gs.drawImage(img, x, y, logoWidth, logoHeight, null);         gs.setColor(Color.black);         gs.setBackground(Color.WHITE);         gs.dispose();         img.flush();         if(!ImageIO.write(image, format, file)){
              throw new IOException("Could not write an image of format " + format + " to " + file);         }     }     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
        
          hints = new Hashtable
         
          (); hints.put(EncodeHintType.CHARACTER_SET, "utf-8"); hints.put(EncodeHintType.ERROR_CORRECTION, level); hints.put(EncodeHintType.MARGIN, margin); //设置白边 BitMatrix bitMatrix = new MultiFormatWriter().encode(txt, BarcodeFormat.QR_CODE, width, height, hints); BufferedImage image = toBufferedImage(bitMatrix); Graphics2D gs = image.createGraphics(); int ratioWidth = image.getWidth()*2/10; int ratioHeight = image.getHeight()*2/10; //载入logo Image img = ImageIO.read(new File(logoPath)); int logoWidth = img.getWidth(null)>ratioWidth?ratioWidth:img.getWidth(null); int logoHeight = img.getHeight(null)>ratioHeight?ratioHeight:img.getHeight(null); int x = (image.getWidth() - logoWidth) / 2; int y = (image.getHeight() - logoHeight) / 2; gs.drawImage(img, x, y, logoWidth, logoHeight, null); gs.setColor(Color.black); gs.setBackground(Color.WHITE); gs.dispose(); return image; } }