content: package jnpf.util;
  
  import com.google.zxing.BarcodeFormat;
  import com.google.zxing.EncodeHintType;
  import com.google.zxing.MultiFormatWriter;
  import com.google.zxing.common.BitMatrix;
  import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
  
  import javax.imageio.ImageIO;
  import java.awt.*;
  import java.awt.image.BufferedImage;
  import java.io.File;
  import java.util.HashMap;
  import java.util.Hashtable;
  import java.util.Map;
  
  /**
   *
   * @author JNPF开发平台组
   * @version V3.1.0
   * @copyright 引迈信息技术有限公司
   * @date 2021/3/16 10:58
   */
  public class ZxingCodeUtil {
  
      //-----------------------------------条形码-----------------------------------
      /**
       * 条形码的颜色
       */
      private static final int BLACK = 0xff000000;
      /**
       * 背景色
       */
      private static final int WHITE = 0xFFFFFFFF;
  
      /**
       * 生成一维码（128）
       *
       * @param message  内容
       * @param width  宽度
       * @param height  高度
       * @return
       */
      public static BufferedImage getBarcode(String message, int width, int height) {
          try {
              Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();
              hints.put(EncodeHintType.CHARACTER_SET, "code");
              BitMatrix bitMatrix = new MultiFormatWriter().encode(message,BarcodeFormat.CODE_128, width, height, hints);
              return toBufferedImage(bitMatrix);
          } catch (Exception e) {
              e.printStackTrace();
          }
          return null;
      }
  
      /**
       * 转换成图片
       *
       * @param matrix
       * @return
       */
      private static BufferedImage toBufferedImage(BitMatrix matrix) {
          int width = matrix.getWidth();
          int height = matrix.getHeight();
          BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
          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;
      }
  
      //--------------------------二维码-----------------------------------
      /**
       * 二维码颜色
       */
      private static final int QRCOLOR = 0xFF000000;
      /**
       * 背景色
       */
      private static final int BGCOLOR = 0xFFFFFFFF;
  
      /**
       * 生成普通的二维码
       * @param message 二维码内容
       * @param width 宽度
       * @param height 高度
       * @return
       */
      public static BufferedImage createCode(String message, int width, int height) {
          MultiFormatWriter multiFormatWriter = null;
          BitMatrix bm = null;
          BufferedImage image = null;
          Map<EncodeHintType, Object> hints = getDecodeHintType();
          try {
              multiFormatWriter = new MultiFormatWriter();
              // 参数顺序分别为：编码内容，编码类型，生成图片宽度，生成图片高度，设置参数
              bm = multiFormatWriter.encode(message, BarcodeFormat.QR_CODE, width, height, hints);
              int w = bm.getWidth();
              int h = bm.getHeight();
              image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
              // 开始利用二维码数据创建Bitmap图片，分别设为黑（0xFFFFFFFF）白（0xFF000000）两色
              for (int x = 0; x < w; x++) {
                  for (int y = 0; y < h; y++) {
                      image.setRGB(x, y, bm.get(x, y) ?  QRCOLOR : BGCOLOR);
                  }
              }
          } catch (Exception e) {
              e.printStackTrace();
          }
          return image;
      }
  
      /**
       * 生成带logo的二维码
       * @param message 二维码内容
       * @param logoPath log路径
       * @param width 宽度
       * @param height 高度
       * @return
       */
      public static BufferedImage createCodeWithLogo(String message, String logoPath, int width, int height) {
          BufferedImage bim = createCode(message,width,height);
          try {
              // 读取二维码图片，并构建绘图对象
              BufferedImage image = bim;
              Graphics2D g = image.createGraphics();
              // 读取Logo图片
              BufferedImage logo = ImageIO.read(new File(logoPath));
              //设置logo的大小,这里设置为二维码图片的20%,过大会盖掉二维码
              int widthLogo = logo.getWidth(null) > image.getWidth() * 3 / 10 ? (image.getWidth() * 3 / 10) : logo.getWidth(null),
              heightLogo = logo.getHeight(null) > image.getHeight() * 3 / 10 ? (image.getHeight() * 3 / 10) : logo.getWidth(null);
              // logo放在中心
              int x = (image.getWidth() - widthLogo) / 2;
              int y = (image.getHeight() - heightLogo) / 2;
              //开始绘制图片
              g.drawImage(logo, x, y, widthLogo, heightLogo, null);
              g.dispose();
              logo.flush();
              image.flush();
              return image;
          } catch (Exception e) {
              e.printStackTrace();
          }
          return null;
      }
  
      /**
       * 生成带logo和文字的二维码
       * @param message 二维码内容
       * @param logoPath log路径
       * @param text 文字
       * @param width 宽度
       * @param height 高度
       * @return
       */
      public static BufferedImage createCodeWithLogoAndText(String message, String logoPath, String text, int width, int height) {
          BufferedImage image = createCodeWithLogo(message, logoPath,width,height);
          try {
              if (text != null && !"".equals(text)) {
                  //新的图片，把带logo的二维码下面加上文字
                  BufferedImage outImage = new BufferedImage(400, 445, BufferedImage.TYPE_4BYTE_ABGR);
                  Graphics2D outg = outImage.createGraphics();
                  //画二维码到新的面板
                  outg.drawImage(image, 0, 0, image.getWidth(), image.getHeight(), null);
                  //画文字到新的面板
                  outg.setColor(Color.BLACK);
                  //字体、字型、字号
                  outg.setFont(new Font("宋体", Font.BOLD, 30));
                  int strWidth = outg.getFontMetrics().stringWidth(text);
                  if (strWidth > 399) {
                      String productName1 = text.substring(0, text.length() / 2);
                      String productName2 = text.substring(text.length() / 2, text.length());
                      int strWidth1 = outg.getFontMetrics().stringWidth(productName1);
                      int strWidth2 = outg.getFontMetrics().stringWidth(productName2);
                      outg.drawString(productName1, 200 - strWidth1 / 2, image.getHeight() + (outImage.getHeight() - image.getHeight()) / 2 + 12);
                      BufferedImage outImage2 = new BufferedImage(400, 485, BufferedImage.TYPE_4BYTE_ABGR);
                      Graphics2D outg2 = outImage2.createGraphics();
                      outg2.drawImage(outImage, 0, 0, outImage.getWidth(), outImage.getHeight(), null);
                      outg2.setColor(Color.BLACK);
                      //字体、字型、字号
                      outg2.setFont(new Font("宋体", Font.BOLD, 30));
                      outg2.drawString(productName2, 200 - strWidth2 / 2, outImage.getHeight() + (outImage2.getHeight() - outImage.getHeight()) / 2 + 5);
                      outg2.dispose();
                      outImage2.flush();
                      outImage = outImage2;
                  } else {
                      //画文字
                      outg.drawString(text, 200 - strWidth / 2, image.getHeight() + (outImage.getHeight() - image.getHeight()) / 2 + 12);
                  }
                  outg.dispose();
                  outImage.flush();
                  image = outImage;
                  image.flush();
              }
          } catch (Exception e) {
              e.printStackTrace();
          }
          return image;
      }
  
      /**
       * 设置二维码的格式参数
       * @return
       */
      private static Map<EncodeHintType, Object> getDecodeHintType() {
          Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>(16);
          hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
          hints.put(EncodeHintType.CHARACTER_SET, Constants.UTF8);
          hints.put(EncodeHintType.MARGIN, 0);
          hints.put(EncodeHintType.MAX_SIZE, 350);
          hints.put(EncodeHintType.MIN_SIZE, 100);
          return hints;
      }
  }
  
  