package t1;import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;import javax.imageio.ImageIO;import com.google.zxing.common.BitMatrix;/** * 二维码的生成需要借助MatrixToImageWriter类，该类是由Google提供的，可以将该类直接拷贝到源码中使用，当然你也可以自己写个 * 生产条形码的基类 */
public class MatrixToImageWriter {  private static final int BLACK = 0xFF000000;//用于设置图案的颜色  private static final int WHITE = 0xFFFFFFFF; //用于背景色  private MatrixToImageWriter() {  }  public static BufferedImage toBufferedImage(BitMatrix matrix) {  int width = matrix.getWidth();  int height = matrix.getHeight();  BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);  for (int x = 0; x < width; x++) {  for (int y = 0; y < height; y++) {  image.setRGB(x, y,  (matrix.get(x, y) ? BLACK : WHITE));
//              image.setRGB(x, y,  (matrix.get(x, y) ? Color.YELLOW.getRGB() : Color.CYAN.getRGB()));
            }  }  return image;  }  public static void writeToFile(BitMatrix matrix, String format, File file) throws IOException {  BufferedImage image = toBufferedImage(matrix);  //设置logo图标  LogoConfig logoConfig = new LogoConfig();  image = logoConfig.LogoMatrix(image);  if (!ImageIO.write(image, format, file)) {  throw new IOException("Could not write an image of format " + format + " to " + file);  }else{  System.out.println("图片生成成功！");  }  }  public static void writeToStream(BitMatrix matrix, String format, OutputStream stream) throws IOException {  BufferedImage image = toBufferedImage(matrix);  //设置logo图标  LogoConfig logoConfig = new LogoConfig();  image = logoConfig.LogoMatrix(image);  if (!ImageIO.write(image, format, stream)) {  throw new IOException("Could not write an image of format " + format);  }  }
}  

package t1;import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
/** * 二维码 添加 logo图标 处理的方法, * 模仿微信自动生成二维码效果，有圆角边框，logo和二维码间有空白区，logo带有灰色边框 * @author Administrator sangwenhao * */
public class LogoConfig {  /** * 设置 logo  * @param matrixImage 源二维码图片 * @return 返回带有logo的二维码图片 * @throws IOException * @author Administrator sangwenhao */  public BufferedImage LogoMatrix(BufferedImage matrixImage) throws IOException{  /** * 读取二维码图片，并构建绘图对象 */  Graphics2D g2 = matrixImage.createGraphics();  int matrixWidth = matrixImage.getWidth();  int matrixHeigh = matrixImage.getHeight();  /** * 读取Logo图片 */  BufferedImage logo = ImageIO.read(new File("E:\\heack.jpg"));  //开始绘制图片  g2.drawImage(logo,matrixWidth/5*2,matrixHeigh/5*2, matrixWidth/5, matrixHeigh/5, null);//绘制       BasicStroke stroke = new BasicStroke(5,BasicStroke.CAP_ROUND,BasicStroke.JOIN_ROUND);   g2.setStroke(stroke);// 设置笔画对象  //指定弧度的圆角矩形  RoundRectangle2D.Float round = new RoundRectangle2D.Float(matrixWidth/5*2, matrixHeigh/5*2, matrixWidth/5, matrixHeigh/5,20,20);  g2.setColor(Color.white);  g2.draw(round);// 绘制圆弧矩形  //设置logo 有一道灰色边框  BasicStroke stroke2 = new BasicStroke(1,BasicStroke.CAP_ROUND,BasicStroke.JOIN_ROUND);   g2.setStroke(stroke2);// 设置笔画对象  RoundRectangle2D.Float round2 = new RoundRectangle2D.Float(matrixWidth/5*2+2, matrixHeigh/5*2+2, matrixWidth/5-4, matrixHeigh/5-4,20,20);  g2.setColor(new Color(128,128,128));  g2.draw(round2);// 绘制圆弧矩形
           g2.dispose();  matrixImage.flush() ;  return matrixImage ;  }  }  

package t1;import java.io.File;
import java.io.IOException;
import java.util.Hashtable;import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;public class EncodeTest {  public static void Encode_QR_CODE() throws IOException, WriterException{  String contents = "ZXing 二维码内容1234!"; // 二维码内容  int width = 430; // 二维码图片宽度 300   int height = 430; // 二维码图片高度300
          String format = "gif";// 二维码的图片格式 gif
          Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();  // 指定纠错等级,纠错级别（L 7%、M 15%、Q 25%、H 30%）
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);  // 内容所使用字符集编码  hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
//      hints.put(EncodeHintType.MAX_SIZE, 350);//设置图片的最大值
//      hints.put(EncodeHintType.MIN_SIZE, 100);//设置图片的最小值  hints.put(EncodeHintType.MARGIN, 1);//设置二维码边的空度，非负数
          BitMatrix bitMatrix = new MultiFormatWriter().encode(contents,//要编码的内容  //编码类型，目前zxing支持：Aztec 2D,CODABAR 1D format,Code 39 1D,Code 93 1D ,Code 128 1D,  //Data Matrix 2D , EAN-8 1D,EAN-13 1D,ITF (Interleaved Two of Five) 1D,  //MaxiCode 2D barcode,PDF417,QR Code 2D,RSS 14,RSS EXPANDED,UPC-A 1D,UPC-E 1D,UPC/EAN extension,UPC_EAN_EXTENSION
                BarcodeFormat.QR_CODE,  width, //条形码的宽度  height, //条形码的高度  hints);//生成条形码时的一些配置,此项可选  // 生成二维码  File outputFile = new File("e:" + File.separator + "new-1.gif");//指定输出路径
          MatrixToImageWriter.writeToFile(bitMatrix, format, outputFile);  }  public static void main(String[] args) throws Exception {  try {  Encode_QR_CODE();  } catch (Exception e) {  // TODO: handle exception
            e.printStackTrace();  }  }  }