用zxing生成、解析二维码

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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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