java zxing生成二维码

package zxing.test;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.commons.codec.binary.Base64;

/**
 * @作者 yan
 * @创建日期
 * @版本 V1.0
 * @描述
 */
public class QrCodeUtil {

    /**
     * 生成二维码，返回二维码Base64编码
     * @param content
     * @param size
     * @param imgFormt
     * @return
     */
    public static String createQrCodeBase64(String content, int size, String imgFormt){
        ByteArrayOutputStream baos = new ByteArrayOutputStream(); 

        try {
            Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();
            hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
            hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
            BitMatrix bitMatrix = new MultiFormatWriter().encode(content,BarcodeFormat.QR_CODE, size, size, hints);
            MatrixToImageWriter.writeToStream(bitMatrix, imgFormt, baos);

        } catch (WriterException ex) {
            Logger.getLogger(QrCodeUtil.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IOException ex) {
            Logger.getLogger(QrCodeUtil.class.getName()).log(Level.SEVERE, null, ex);
        }

        byte result [] = baos.toByteArray();

        return Base64.encodeBase64String(result);
    }

    /**
     * 生成二维码，保存到output
     * @param output
     * @param content
     * @param size
     * @param imgFormt
     * @return
     */
    public static boolean createQrCode(OutputStream output, String content, int size, String imgFormt){

        try {
            Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();
            hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
            hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
            BitMatrix bitMatrix = new MultiFormatWriter().encode(content,BarcodeFormat.QR_CODE, size, size, hints);
            MatrixToImageWriter.writeToStream(bitMatrix, imgFormt, output);

            return true;
        } catch (WriterException ex) {
            Logger.getLogger(QrCodeUtil.class.getName()).log(Level.SEVERE, null, ex);
        } catch (IOException ex) {
            Logger.getLogger(QrCodeUtil.class.getName()).log(Level.SEVERE, null, ex);
        }

        return false;
    }
}

jar:

zxing-core-3.2.0.jar

zxing-javase-3.2.0.jar