用zxing生成、解析二维码

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.BinaryBitmap;  import com.google.zxing.DecodeHintType;  import com.google.zxing.LuminanceSource;  import com.google.zxing.MultiFormatReader;  import com.google.zxing.MultiFormatWriter;  import com.google.zxing.Reader;  import com.google.zxing.ReaderException;  import com.google.zxing.Result;  import com.google.zxing.client.j2se.BufferedImageLuminanceSource;  import com.google.zxing.common.ByteMatrix;  import com.google.zxing.common.HybridBinarizer;  public class Test {     private static final int BLACK = 0xff000000;     private static final int WHITE = 0xFFFFFFFF;   /**    * @param args    */   public static void main(String[] args) {    Test test=new Test();    test.encode();   test.decode();   }   //------------------------------------------------------------------------------编码-------------------------------------------------   /**    * 在编码时需要将com.google.zxing.qrcode.encoder.Encoder.java中的    *  static final String DEFAULT_BYTE_MODE_ENCODING = "ISO8859-1";修改为UTF-8，否则中文编译后解析不了    */   public void encode(){    try {     String str = "姓名：张三，性别：男，年龄：25，籍贯：中国北京，";// 二维码内容     String path = "D://test.png";     ByteMatrix byteMatrix;     byteMatrix= new MultiFormatWriter().encode(str, BarcodeFormat.QR_CODE, 200, 200);     File file = new File(path);        writeToFile(byteMatrix, "png", file);    } catch (Exception e) {     e.printStackTrace();    }   }   public static void writeToFile(ByteMatrix matrix, String format, File file)   throws IOException {  BufferedImage image = toBufferedImage(matrix);  ImageIO.write(image, format, file);  }   public static BufferedImage toBufferedImage(ByteMatrix 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) == 0 ? BLACK:WHITE);         }       }       return image;     }   //-------------------------------------------------------------------解码----------------------------------------------------   public void decode(){    try{     Reader reader = new MultiFormatReader();     String imgPath = "D://test.png";     File file = new File(imgPath);     BufferedImage image;     try {      image = ImageIO.read(file);      if (image == null) {      System.out.println("Could not decode image");      }      LuminanceSource source = new BufferedImageLuminanceSource(image);      BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));      Result result;      Hashtable hints= new Hashtable();      hints.put(DecodeHintType.CHARACTER_SET, "utf-8");      //解码设置编码方式为：utf-8，      result = new MultiFormatReader().decode(bitmap,hints);      String resultStr = result.getText();      System.out.println("解析后内容："+resultStr);     } catch (IOException ioe) {      System.out.println(ioe.toString());     } catch (ReaderException re) {      System.out.println(re.toString());     }    }catch(Exception ex){     System.out.println(ex.toString());    }   }  }
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用zxing生成、解析二维码
