java生成彩色附logo二维码

import java.awt.Color;import java.awt.Graphics2D;import java.awt.Image;import java.awt.geom.AffineTransform;import java.awt.image.AffineTransformOp;import java.awt.image.BufferedImage;import java.io.File;import java.io.IOException;import java.io.UnsupportedEncodingException;import java.util.HashMap;import java.util.Map; import javax.imageio.ImageIO; 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 MatrixToImageWriter { private static final int IMAGE_WIDTH = 100; private static final int IMAGE_HEIGHT = 100; private static final int IMAGE_HALF_WIDTH = IMAGE_WIDTH / 2; private static final int FRAME_WIDTH = 2; private static MultiFormatWriter mutiWriter = new MultiFormatWriter();  public static void encode(String content, int width, int height,   String srcImagePath, String destImagePath) {  try {   ImageIO.write(genBarcode(content, width, height, srcImagePath),     "jpg", new File(destImagePath));  } catch (IOException e) {   e.printStackTrace();  } catch (WriterException e) {   e.printStackTrace();  } }  private static BufferedImage genBarcode(String content, int width,   int height, String srcImagePath) throws WriterException,   IOException {  BufferedImage scaleImage = scale(srcImagePath, IMAGE_WIDTH,    IMAGE_HEIGHT, true);  int[][] srcPixels = new int[IMAGE_WIDTH][IMAGE_HEIGHT];  for (int i = 0; i < scaleImage.getWidth(); i++) {   for (int j = 0; j < scaleImage.getHeight(); j++) {    srcPixels[i][j] = scaleImage.getRGB(i, j);   }  }  Map<EncodeHintType, Object> hint = new HashMap<EncodeHintType, Object>();  hint.put(EncodeHintType.CHARACTER_SET, "utf-8");  hint.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);  // 生成二维码   BitMatrix matrix = mutiWriter.encode(content, BarcodeFormat.QR_CODE,    width, height, hint);  // 二维矩阵转为一维像素数组  int halfW = matrix.getWidth() / 2;  int halfH = matrix.getHeight() / 2;  int[] pixels = new int[width * height];  for (int y = 0; y < matrix.getHeight(); y++) {   for (int x = 0; x < matrix.getWidth(); x++) {    // 左上角颜色,根据自己需要调整颜色范围和颜色      if (x > 0 && x < 170 && y > 0 && y < 170) {     Color color = new Color(231, 144, 56);     int colorInt = color.getRGB();     pixels[y * width + x] = matrix.get(x, y) ? colorInt       : 16777215;    }    // 读取图片    else if (x > halfW - IMAGE_HALF_WIDTH      && x < halfW + IMAGE_HALF_WIDTH      && y > halfH - IMAGE_HALF_WIDTH      && y < halfH + IMAGE_HALF_WIDTH) {     pixels[y * width + x] = srcPixels[x - halfW       + IMAGE_HALF_WIDTH][y - halfH + IMAGE_HALF_WIDTH];    } else if ((x > halfW - IMAGE_HALF_WIDTH - FRAME_WIDTH      && x < halfW - IMAGE_HALF_WIDTH + FRAME_WIDTH      && y > halfH - IMAGE_HALF_WIDTH - FRAME_WIDTH && y < halfH      + IMAGE_HALF_WIDTH + FRAME_WIDTH)      || (x > halfW + IMAGE_HALF_WIDTH - FRAME_WIDTH        && x < halfW + IMAGE_HALF_WIDTH + FRAME_WIDTH        && y > halfW - IMAGE_HALF_WIDTH - FRAME_WIDTH && y < halfH        + IMAGE_HALF_WIDTH + FRAME_WIDTH)      || (x > halfW - IMAGE_HALF_WIDTH - FRAME_WIDTH        && x < halfW + IMAGE_HALF_WIDTH + FRAME_WIDTH        && y > halfH - IMAGE_HALF_WIDTH - FRAME_WIDTH && y < halfH        - IMAGE_HALF_WIDTH + FRAME_WIDTH)      || (x > halfW - IMAGE_HALF_WIDTH - FRAME_WIDTH        && x < halfW + IMAGE_HALF_WIDTH + FRAME_WIDTH        && y > halfH + IMAGE_HALF_WIDTH - FRAME_WIDTH && y < halfH        + IMAGE_HALF_WIDTH + FRAME_WIDTH)) {     pixels[y * width + x] = 0xfffffff;     // 在图片四周形成边框    } else {     // 二维码颜色     int num1 = (int) (50 - (50.0 - 13.0) / matrix.getHeight()       * (y + 1));     int num2 = (int) (165 - (165.0 - 72.0) / matrix.getHeight()       * (y + 1));     int num3 = (int) (162 - (162.0 - 107.0)       / matrix.getHeight() * (y + 1));     Color color = new Color(num1, num2, num3);     int colorInt = color.getRGB();     // 此处可以修改二维码的颜色，可以分别制定二维码和背景的颜色；      pixels[y * width + x] = matrix.get(x, y) ? colorInt       : 16777215;     // 0x000000:0xffffff      }   }  }  BufferedImage image = new BufferedImage(width, height,    BufferedImage.TYPE_INT_RGB);  image.getRaster().setDataElements(0, 0, width, height, pixels);  return image; }  private static BufferedImage scale(String srcImageFile, int height,   int width, boolean hasFiller) throws IOException {  double ratio = 0.0; // 缩放比例  File file = new File(srcImageFile);  BufferedImage srcImage = ImageIO.read(file);  Image destImage = srcImage.getScaledInstance(width, height,    BufferedImage.SCALE_SMOOTH);  // 计算比例   if ((srcImage.getHeight() > height) || (srcImage.getWidth() > width)) {   if (srcImage.getHeight() > srcImage.getWidth()) {    ratio = (new Integer(height)).doubleValue()      / srcImage.getHeight();   } else {    ratio = (new Integer(width)).doubleValue()      / srcImage.getWidth();   }   AffineTransformOp op = new AffineTransformOp(     AffineTransform.getScaleInstance(ratio, ratio), null);   destImage = op.filter(srcImage, null);  }  if (hasFiller) {   // 补白   BufferedImage image = new BufferedImage(width, height,     BufferedImage.TYPE_INT_RGB);   Graphics2D graphic = image.createGraphics();   graphic.setColor(Color.white);   graphic.fillRect(0, 0, width, height);   if (width == destImage.getWidth(null))    graphic.drawImage(destImage, 0,      (height - destImage.getHeight(null)) / 2,      destImage.getWidth(null), destImage.getHeight(null),      Color.white, null);   else    graphic.drawImage(destImage,      (width - destImage.getWidth(null)) / 2, 0,      destImage.getWidth(null), destImage.getHeight(null),      Color.white, null);   graphic.dispose();   destImage = image;  }  return (BufferedImage) destImage; }  public static void main(String[] args) throws UnsupportedEncodingException {  // 依次为内容(不支持中文),宽,长,中间图标路径,储存路径   MatrixToImageWriter.encode("http://www.baidu.com/", 512, 512,    "D://logo.png", "D://2013-01.jpg");  }}