[Java]代码    

import com.google.zxing.*;  import com.google.zxing.Reader;  import com.google.zxing.client.j2se.BufferedImageLuminanceSource;  import com.google.zxing.client.j2se.MatrixToImageWriter;  import com.google.zxing.common.BitMatrix;  import com.google.zxing.common.HybridBinarizer;  import com.google.zxing.multi.GenericMultipleBarcodeReader;  import com.google.zxing.multi.MultipleBarcodeReader;    import javax.imageio.ImageIO;  import java.io.*;  import java.nio.file.FileSystems;  import java.nio.file.Path;  import java.util.*;    /**   * 二维码生成工具类   *   * @author KisChang   * @version 1.0   * @date 2015年12月03日   * @since 1.0   */  public class ZXingUtils {        public static enum ImageType {          JPEG("jpeg"),PNG("png"),GIF("gif");          private String value;            ImageType(String value) {              this.value = value;          }            public String getValue() {              return value;          }      }        /**编码*/      public static class Encode {            private static Map<EncodeHintType, Object> HINTS;          static {              HINTS = new EnumMap<EncodeHintType,Object>(EncodeHintType.class);              HINTS.put(EncodeHintType.CHARACTER_SET, "UTF-8");          }          /**           * 生成二维码           * @param widthAndHeight    高宽           * @param content           二维码内容           * @param os                输出流           */          public static void buildQRCode(int widthAndHeight, String content, OutputStream os, ImageType imageType) throws WriterException, IOException {              BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, widthAndHeight, widthAndHeight, HINTS);// 生成矩阵              MatrixToImageWriter.writeToStream(bitMatrix, imageType.getValue(), os);          }            public static void buildQRCode(String content, OutputStream os, ImageType imageType) throws WriterException, IOException {              buildQRCode(200, content, os, imageType);          }            /**           * 生成二维码           * @param widthAndHeight    高宽           * @param content           二维码内容           * @param filePath          输出目录           * @param fileName          输出文件名           * @param imageType         输出文件类型           */          public static void buildQRCode(int widthAndHeight, String content, String filePath, String fileName, ImageType imageType) throws WriterException, IOException {              BitMatrix bitMatrix = new MultiFormatWriter().encode(content,                      BarcodeFormat.QR_CODE, widthAndHeight, widthAndHeight, HINTS);              Path path = FileSystems.getDefault().getPath(filePath, fileName);              MatrixToImageWriter.writeToPath(bitMatrix, imageType.getValue(), path);// 输出图像          }            public static void buildQRCode(String content, String filePath, String fileName, ImageType imageType) throws WriterException, IOException {              buildQRCode(200, content,filePath,fileName,imageType);          }      }          /**解码*/      public static class Decode {            private static final Map<DecodeHintType,Object> HINTS;          private static final Map<DecodeHintType,Object> HINTS_PURE;          static {              HINTS = new EnumMap<DecodeHintType,Object>(DecodeHintType.class);              HINTS.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);              HINTS.put(DecodeHintType.POSSIBLE_FORMATS, EnumSet.allOf(BarcodeFormat.class));              HINTS_PURE = new EnumMap<DecodeHintType,Object>(HINTS);              HINTS_PURE.put(DecodeHintType.PURE_BARCODE, Boolean.TRUE);          }            /**           * 解析二维码           */          public static Collection<Result> readQRCode(File qrCode) throws ReaderException, IOException {              FileInputStream inputStream = new FileInputStream(qrCode);              return readQRCode(inputStream);          }            public static Collection<Result> readQRCode(InputStream inputStream) throws ReaderException, IOException {              LuminanceSource source = new BufferedImageLuminanceSource(ImageIO.read(inputStream));              BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(source));                Collection<Result> results = new ArrayList<Result>(1);              ReaderException savedException = null;              Reader reader = new MultiFormatReader();              try {                  //寻找多个条码                  MultipleBarcodeReader multiReader = new GenericMultipleBarcodeReader(reader);                  Result[] theResults = multiReader.decodeMultiple(binaryBitmap, HINTS);                  if (theResults != null) {                      results.addAll(Arrays.asList(theResults));                  }              } catch (ReaderException re) {                  savedException = re;              }                if (results.isEmpty()) {                  try {                      //寻找纯条码                      Result theResult = reader.decode(binaryBitmap, HINTS_PURE);                      if (theResult != null) {                          results.add(theResult);                      }                  } catch (ReaderException re) {                      savedException = re;                  }              }                if (results.isEmpty()) {                  try {                      //寻找图片中的正常条码                      Result theResult = reader.decode(binaryBitmap, HINTS);                      if (theResult != null) {                          results.add(theResult);                      }                  } catch (ReaderException re) {                      savedException = re;                  }              }                if (results.isEmpty()) {                  try {                      //再次尝试其他特殊处理                      BinaryBitmap hybridBitmap = new BinaryBitmap(new HybridBinarizer(source));                      Result theResult = reader.decode(hybridBitmap, HINTS);                      if (theResult != null) {                          results.add(theResult);                      }                  } catch (ReaderException re) {                      savedException = re;                  }              }              if (results.isEmpty()){                  throw savedException;              }else {                  return results;              }          }              public static Result readQRCodeResult(File qrCode) throws ReaderException, IOException {              FileInputStream inputStream = new FileInputStream(qrCode);              return readQRCodeResult(inputStream);          }          public static Result readQRCodeResult(InputStream inputStream) throws ReaderException, IOException {              Collection<Result> results = readQRCode(inputStream);              if (!results.isEmpty()){                  //寻找结果集中非空的结果                  for (Result result : results){                      if (result != null){                          return result;                      }                  }              }              throw NotFoundException.getNotFoundInstance();          }      }  }