[转]zxing二维码的生成和解码 j2se

package snippet;

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.EncodeHintType;
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.WriterException;
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;

public class TestEnDeCode {

/**
*
*/
public TestEnDeCode() {
// TODO Auto-generated constructor stub
}

/**
* @param args
*/
public static void main(String[] args) {
TestEnDeCode t=new TestEnDeCode();
t.encode();
t.decode();
}

// 编码
public void encode() {
try {
String str = "小猪";// 二维码内容
String path = "hwy.png";
BitMatrix byteMatrix;
Hashtable hints = new Hashtable();
hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
byteMatrix = new MultiFormatWriter().encode(str,
BarcodeFormat.QR_CODE, 200, 200,hints);
File file = new File(path);

MatrixToImageWriter.writeToFile(byteMatrix, "png", file);
} catch (Exception e) {
e.printStackTrace();
}
}

// 解码
public void decode() {
try {
Reader reader = new MultiFormatReader();
String imgPath = "hwy.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");
result = new MultiFormatReader().decode(bitmap, hints);
String resultStr = result.getText();
System.out.println(resultStr);

} catch (IOException ioe) {
System.out.println(ioe.toString());
} catch (ReaderException re) {
System.out.println(re.toString());
}

} catch (Exception ex) {

}
}

}