iTextとzxingによるpdf 417 QRコードの生成と読み取り

package test;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

import javax.imageio.ImageIO;

import org.apache.commons.lang.StringUtils;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.Result;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.HybridBinarizer;
import com.itextpdf.text.pdf.BarcodePDF417;

/**
 *   ： 1、           2、             3、               
 */
public class TwoDimBarCodeService {

	/**
	 *   ：     
	 * @param strInfo		       
	 * @param encode		    ，  ：GBK，UTF-8
	 * @param imgFileExt	       
	 * @return	byte[]		    byte  		
	 * @throws Exception
	 */
	public byte[] generatePdf417Image(String strInfo, String encode,
			String imgFileExt) throws Exception {
		if (StringUtils.isBlank(strInfo)) {
			throw new Exception("               ！");
		}
		if (StringUtils.isBlank(encode)) {
			encode = "UTF-8";
		}

		BarcodePDF417 barcodePDF417 = new BarcodePDF417();

		barcodePDF417.setText(strInfo.getBytes(encode));

		Image pdfImg = barcodePDF417.createAwtImage(Color.black, Color.white);

		BufferedImage img = new BufferedImage((int) pdfImg.getWidth(null),
				(int) pdfImg.getHeight(null), BufferedImage.TYPE_INT_RGB);
		Graphics g = img.getGraphics();

		g.drawImage(pdfImg, 0, 0, Color.white, null);

		ByteArrayOutputStream os = new ByteArrayOutputStream();

		ImageIO.write(img, imgFileExt, os);

		byte[] buffs = os.toByteArray();

		os.close();

		return buffs;
	}

	/**
	 *   ：    byte       
	 * @param imgBuff			       byte[]
	 * @param encode			    ，  ：GBK，UTF-8
	 * @return
	 * @throws Exception
	 */
	public String readInfoFromPdf417Image(byte[] imgBuff, String encode)
			throws Exception {
		if (imgBuff == null || imgBuff.length < 1) {
			throw new Exception("             ！");
		}

		InputStream is = new ByteArrayInputStream(imgBuff);

		BufferedImage image = ImageIO.read(is);

		LuminanceSource source = new BufferedImageLuminanceSource(image);

		BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));

		Result decodedValue = new MultiFormatReader().decode(bitmap);

		if (decodedValue == null) {
			return "";
		}

		String resultText = decodedValue.getText();
		resultText = StringUtils.trimToEmpty(resultText);
		byte[] b = resultText.getBytes("ISO-8859-1");
		return new String(b, encode);
	}

	public static void main(String[] args) throws Exception {
		TwoDimBarCodeService service = new TwoDimBarCodeService();

		String strInfo = "GB0626-2005^JH-201403050005^XX  ^  ^[2014]0005^^            ^  5^  ^20140305^^^20140305^^";
		byte[] buff = service.generatePdf417Image(strInfo, "GBK", "jpg");
		OutputStream os = new FileOutputStream(new File("d:/test.jpg"));
		os.write(buff);
		os.flush();
		os.close();

		System.err.println("    ："
				+ service.readInfoFromPdf417Image(buff, "GBK"));
	}
}