用zxing生成、解析二維碼

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();
}
//------------------------------------------------------------------------------編碼-------------------------------------------------
/**
在編碼時需要將com.google.zxing.qrcode.encoder.Encoder.java中的
static final String DEFAULT_BYTE_MODE_ENCODING = "ISO8859-1";修改為UTF-8，否則中文編譯后解析不了
*/
public void encode(){
try {
String str = "姓名：張三，性別：男，年齡：25，籍貫：中國北京，";// 二維碼內容
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;
}
//-------------------------------------------------------------------解碼----------------------------------------------------
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");
//解碼設置編碼方式為：utf-8，
result = new MultiFormatReader().decode(bitmap,hints);
String resultStr = result.getText();
System.out.println("解析后內容："+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());
}
}
}</pre>