Zxing和QR CODE 生成与解析二维码实例（带logo篇）

首先介绍Zxing生成带logo的二维码

package com.util;

import com.google.zxing.LuminanceSource;

import java.awt.Graphics2D;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;

public final class BufferedImageLuminanceSource extends LuminanceSource {

  private final BufferedImage image;
  private final int left;
  private final int top;

  public BufferedImageLuminanceSource(BufferedImage image) {
    this(image, 0, 0, image.getWidth(), image.getHeight());
  }

  public BufferedImageLuminanceSource(BufferedImage image, int left, int top, int width, int height) {
    super(width, height);

    int sourceWidth = image.getWidth();
    int sourceHeight = image.getHeight();
    if (left + width > sourceWidth || top + height > sourceHeight) {
      throw new IllegalArgumentException("Crop rectangle does not fit within image data.");
    }

    for (int y = top; y < top + height; y++) {
      for (int x = left; x < left + width; x++) {
        if ((image.getRGB(x, y) & 0xFF000000) == 0) {
          image.setRGB(x, y, 0xFFFFFFFF); // = white
        }
      }
    }

    this.image = new BufferedImage(sourceWidth, sourceHeight, BufferedImage.TYPE_BYTE_GRAY);
    this.image.getGraphics().drawImage(image, 0, 0, null);
    this.left = left;
    this.top = top;
  }

  @Override
  public byte[] getRow(int y, byte[] row) {
    if (y < 0 || y >= getHeight()) {
      throw new IllegalArgumentException("Requested row is outside the image: " + y);
    }
    int width = getWidth();
    if (row == null || row.length < width) {
      row = new byte[width];
    }
    image.getRaster().getDataElements(left, top + y, width, 1, row);
    return row;
  }

  @Override
  public byte[] getMatrix() {
    int width = getWidth();
    int height = getHeight();
    int area = width * height;
    byte[] matrix = new byte[area];
    image.getRaster().getDataElements(left, top, width, height, matrix);
    return matrix;
  }

  @Override
  public boolean isCropSupported() {
    return true;
  }

  @Override
  public LuminanceSource crop(int left, int top, int width, int height) {
    return new BufferedImageLuminanceSource(image, this.left + left, this.top + top, width, height);
  }

  @Override
  public boolean isRotateSupported() {
    return true;
  }

  @Override
  public LuminanceSource rotateCounterClockwise() {

      int sourceWidth = image.getWidth();
    int sourceHeight = image.getHeight();

    AffineTransform transform = new AffineTransform(0.0, -1.0, 1.0, 0.0, 0.0, sourceWidth);

    BufferedImage rotatedImage = new BufferedImage(sourceHeight, sourceWidth, BufferedImage.TYPE_BYTE_GRAY);

    Graphics2D g = rotatedImage.createGraphics();
    g.drawImage(image, transform, null);
    g.dispose();

    int width = getWidth();
    return new BufferedImageLuminanceSource(rotatedImage, top, sourceWidth - (left + width), getHeight(), width);
  }

}

package com.zxing.create;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics2D;
import java.awt.MediaTracker;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.OutputStream;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import javax.imageio.ImageIO;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.Binarizer;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.EncodeHintType;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.Result;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import com.util.BufferedImageLuminanceSource;

/**  
 * @Description: (二维码)     
 * @author：yqgao  
 * @date：2014-11-7 下午05:27:13     
 */
public class ZXingCode
{
    public static void main(String[] args) throws WriterException
    {
        String content = "http://blog.csdn.net/gao36951";
        String filePath = "D:/二维码生成/weixin.jpg";
        try
        {
            File file = new File(filePath);
 
            ZXingCode zp = new ZXingCode();
 
            BufferedImage bim = zp.getQR_CODEBufferedImage(content, BarcodeFormat.QR_CODE, 300, 300, zp.getDecodeHintType());
 
            ImageIO.write(bim, "jpeg", file);
 
            zp.addLogo_QRCode(file, new File("D:/logo/logo3.jpg"), new LogoConfig());
             
//            Thread.sleep(5000);
//            zp.parseQR_CODEImage(new File("D:/二维码生成/TDC-test.png"));
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }
 
    /**
     * 给二维码图片添加Logo
     *
     * @param qrPic
     * @param logoPic
     */
    public void addLogo_QRCode(File qrPic, File logoPic, LogoConfig logoConfig)
    {
        try
        {
            if (!qrPic.isFile() || !logoPic.isFile())
            {
                System.out.print("file not find !");
                System.exit(0);
            }
 
            /**
             * 读取二维码图片，并构建绘图对象
             */
            BufferedImage image = ImageIO.read(qrPic);
            Graphics2D g = image.createGraphics();
 
            /**
             * 读取Logo图片
             */
            BufferedImage logo = ImageIO.read(logoPic);
            /**
             * 设置logo的大小,本人设置为二维码图片的20%,因为过大会盖掉二维码
             */
            int widthLogo = logo.getWidth(null)>image.getWidth()*2/10?(image.getWidth()*2/10):logo.getWidth(null), 
       		    heightLogo = logo.getHeight(null)>image.getHeight()*2/10?(image.getHeight()*2/10):logo.getWidth(null);
             
            // 计算图片放置位置
   		    /**
   		     * logo放在中心
   		     */
            /* int x = (image.getWidth() - widthLogo) / 2;
               int y = (image.getHeight() - heightLogo) / 2;*/
       		 /**
   		     * logo放在右下角
   		     */
   		    int x = (image.getWidth() - widthLogo);
            int y = (image.getHeight() - heightLogo);
            //开始绘制图片
            g.drawImage(logo, x, y, widthLogo, heightLogo, null);
            g.drawRoundRect(x, y, widthLogo, heightLogo, 15, 15);
            g.setStroke(new BasicStroke(logoConfig.getBorder()));
            g.setColor(logoConfig.getBorderColor());
            g.drawRect(x, y, widthLogo, heightLogo);
             
            g.dispose();
            logo.flush();
            image.flush();
             
            ImageIO.write(image, "png", new File("D:/二维码生成/TDC-"/*+new Date().getTime()*/+"test.png"));
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }
 
    /**
     * 二维码的解析
     *
     * @param file
     */
    public void parseQR_CODEImage(File file)
    {
        try
        {
            MultiFormatReader formatReader = new MultiFormatReader();
 
            // File file = new File(filePath);
            if (!file.exists())
            {
                return;
            }
 
            BufferedImage image = ImageIO.read(file);
 
            LuminanceSource source = new BufferedImageLuminanceSource(image);
            Binarizer binarizer = new HybridBinarizer(source);
            BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);
 
            Map hints = new HashMap();
            hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
 
            Result result = formatReader.decode(binaryBitmap, hints);
 
            System.out.println("result = " + result.toString());
            System.out.println("resultFormat = " + result.getBarcodeFormat());
            System.out.println("resultText = " + result.getText());
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }
 
    /**
     * 将二维码生成为文件
     *
     * @param bm
     * @param imageFormat
     * @param file
     */
    public void decodeQR_CODE2ImageFile(BitMatrix bm, String imageFormat, File file)
    {
        try
        {
            if (null == file || file.getName().trim().isEmpty())
            {
                throw new IllegalArgumentException("文件异常，或扩展名有问题！");
            }
 
            BufferedImage bi = fileToBufferedImage(bm);
            ImageIO.write(bi, "apng", file);
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }
 
 
    /**
     * 构建初始化二维码
     *
     * @param bm
     * @return
     */
    public BufferedImage fileToBufferedImage(BitMatrix bm)
    {
        BufferedImage image = null;
        try
        {
            int w = bm.getWidth(), h = bm.getHeight();
            image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
 
            for (int x = 0; x < w; x++)
            {
                for (int y = 0; y < h; y++)
                {
                    image.setRGB(x, y, bm.get(x, y) ? 0xFF000000 : 0xFFCCDDEE);
                }
            }
 
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
        return image;
    }
 
    /**
     * 生成二维码bufferedImage图片
     *
     * @param content
     *            编码内容
     * @param barcodeFormat
     *            编码类型
     * @param width
     *            图片宽度
     * @param height
     *            图片高度
     * @param hints
     *            设置参数
     * @return
     */
    public BufferedImage getQR_CODEBufferedImage(String content, BarcodeFormat barcodeFormat, int width, int height, Map<EncodeHintType, ?> hints)
    {
        MultiFormatWriter multiFormatWriter = null;
        BitMatrix bm = null;
        BufferedImage image = null;
        try
        {
            multiFormatWriter = new MultiFormatWriter();
 
            // 参数顺序分别为：编码内容，编码类型，生成图片宽度，生成图片高度，设置参数
            bm = multiFormatWriter.encode(content, barcodeFormat, width, height, hints);
 
            int w = bm.getWidth();
            int h = bm.getHeight();
            image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
 
            // 开始利用二维码数据创建Bitmap图片，分别设为黑（0xFFFFFFFF）白（0xFF000000）两色
            for (int x = 0; x < w; x++)
            {
                for (int y = 0; y < h; y++)
                {
                    image.setRGB(x, y, bm.get(x, y) ? 0xFF000000 : 0xFFCCDDEE);
                }
            }
        }
        catch (WriterException e)
        {
            e.printStackTrace();
        }
        return image;
    }
 
    /**
     * 设置二维码的格式参数
     *
     * @return
     */
    public Map<EncodeHintType, Object> getDecodeHintType()
    {
        // 用于设置QR二维码参数
        Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();
        // 设置QR二维码的纠错级别（H为最高级别）具体级别信息
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
        // 设置编码方式
        hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
        hints.put(EncodeHintType.MARGIN, 0);
        hints.put(EncodeHintType.MAX_SIZE, 350);
        hints.put(EncodeHintType.MIN_SIZE, 100);
 
        return hints;
    }
}
 
class LogoConfig
{
    // logo默认边框颜色
    public static final Color DEFAULT_BORDERCOLOR = Color.WHITE;
    // logo默认边框宽度
    public static final int DEFAULT_BORDER = 2;
    // logo大小默认为照片的1/5
    public static final int DEFAULT_LOGOPART = 5;
 
    private final int border = DEFAULT_BORDER;
    private final Color borderColor;
    private final int logoPart;
 
    /**
     * Creates a default config with on color {@link #BLACK} and off color
     * {@link #WHITE}, generating normal black-on-white barcodes.
     */
    public LogoConfig()
    {
        this(DEFAULT_BORDERCOLOR, DEFAULT_LOGOPART);
    }
 
    public LogoConfig(Color borderColor, int logoPart)
    {
        this.borderColor = borderColor;
        this.logoPart = logoPart;
    }
 
    public Color getBorderColor()
    {
        return borderColor;
    }
 
    public int getBorder()
    {
        return border;
    }
 
    public int getLogoPart()
    {
        return logoPart;
    }
}

生成的带logo的二维码如下图

下面介绍QR CODE 生成带Logo的二维码的实例

package com.qrcode.create;

import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;

import javax.imageio.ImageIO;

import com.swetake.util.Qrcode;

/** 
 * @作者  Relieved
 * @创建日期   2014年11月8日
 * @描述  （带logo二维码） 
 * @版本 V 1.0
 */
public class Logo_Two_Code {
/** 
     * 生成二维码(QRCode)图片 
     * @param content 二维码图片的内容
     * @param imgPath 生成二维码图片完整的路径
     * @param ccbpath  二维码图片中间的logo路径
     */  
    public static int createQRCode(String content, String imgPath,String ccbPath,int version) {  
        try {  
        	Qrcode qrcodeHandler = new Qrcode();  
            //设置二维码排错率，可选L(7%)、M(15%)、Q(25%)、H(30%)，排错率越高可存储的信息越少，但对二维码清晰度的要求越小  
            qrcodeHandler.setQrcodeErrorCorrect('M');  
            //N代表数字,A代表字符a-Z,B代表其他字符
            qrcodeHandler.setQrcodeEncodeMode('B'); 
            // 设置设置二维码版本，取值范围1-40，值越大尺寸越大，可存储的信息越大  
            qrcodeHandler.setQrcodeVersion(version); 
            // 图片尺寸  
            int imgSize =67 + 12 * (version - 1) ;
  
            byte[] contentBytes = content.getBytes("gb2312");  
            BufferedImage image = new BufferedImage(imgSize, imgSize, BufferedImage.TYPE_INT_RGB);  
            Graphics2D gs = image.createGraphics();  
  
            gs.setBackground(Color.WHITE);  
            gs.clearRect(0, 0, imgSize, imgSize);  
  
            // 设定图像颜色 > BLACK  
            gs.setColor(Color.BLUE);  
  
            // 设置偏移量 不设置可能导致解析出错  
            int pixoff = 2;  
            // 输出内容 > 二维码  
            if (contentBytes.length > 0 && contentBytes.length < 130) {
                boolean[][] codeOut = qrcodeHandler.calQrcode(contentBytes);
                for (int i = 0; i < codeOut.length; i++) {
                    for (int j = 0; j < codeOut.length; j++) {
                        if (codeOut[j][i]) {
                            gs.fillRect(j * 3 + pixoff, i * 3 + pixoff, 3, 3);
                        }
                    }
                }
            } else {  
                System.err.println("QRCode content bytes length = "  
                        + contentBytes.length + " not in [ 0,125]. ");  
                return -1;
            }  
            Image logo = ImageIO.read(new File(ccbPath));//实例化一个Image对象。
            int widthLogo = logo.getWidth(null)>image.getWidth()*2/10?(image.getWidth()*2/10):logo.getWidth(null), 
           		heightLogo = logo.getHeight(null)>image.getHeight()*2/10?(image.getHeight()*2/10):logo.getWidth(null);
           
       		 /**
   		       * logo放在中心
	          */
            int x = (image.getWidth() - widthLogo) / 2;
            int y = (image.getHeight() - heightLogo) / 2;
            gs.drawImage(logo, x, y, widthLogo, heightLogo, null);
            gs.dispose();  
            image.flush();  
  
            // 生成二维码QRCode图片  
            File imgFile = new File(imgPath);  
            ImageIO.write(image, "png", imgFile);  
  
        } catch (Exception e) 
        {  
            e.printStackTrace();  
            return -100;
        }  
        
        return 0;
    }  

    public static void main(String[] args) {
    String imgPath = "D:/二维码生成/logo_QRCode.png"; 
    String logoPath = "D:/logo/logo3.jpg";
    String encoderContent = "http://blog.csdn.net/gao36951";
    Logo_Two_Code logo_Two_Code = new Logo_Two_Code();
    logo_Two_Code.createQRCode(encoderContent, imgPath, logoPath,8);
}
}

生成带Logo的二维码如下图：