（转载）java zxing 生成带图片的二维码

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.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;import com.sun.org.apache.xalan.internal.xsltc.runtime.Hashtable;/** * 参考 http://blog.csdn.net/lcx46/article/details/13626841 *  * @author 曹飞龙 *  */public class cfltest {// 图片宽度的一般private static final int IMAGE_WIDTH = 15;private static final int IMAGE_HEIGHT = 15;private static final int IMAGE_HALF_WIDTH = IMAGE_WIDTH / 2;private static final int FRAME_WIDTH = 2;// 二维码写码器private static MultiFormatWriter mutiWriter = new MultiFormatWriter();/** *  * @param content *            二维码显示的文本 * @param width *            二维码的宽度 * @param height *            二维码的高度 * @param srcImagePath *            中间嵌套的图片 * @param destImagePath *            二维码生成的地址 */public static void encode(String content, int width, int height,String srcImagePath, String destImagePath) {try {// ImageIO.write 参数 1、BufferedImage 2、输出的格式 3、输出的文件ImageIO.write(genBarcode(content, width, height, srcImagePath),"jpg", new File(destImagePath));} catch (IOException e) {e.printStackTrace();} catch (WriterException e) {e.printStackTrace();}}/** * 得到BufferedImage *  * @param content *            二维码显示的文本 * @param width *            二维码的宽度 * @param height *            二维码的高度 * @param srcImagePath *            中间嵌套的图片 * @return * @throws WriterException * @throws IOException */private static BufferedImage genBarcode(String content, int width,int height, String srcImagePath) throws WriterException,IOException {// 读取源图像BufferedImage scaleImage = scale(srcImagePath, IMAGE_WIDTH,IMAGE_HEIGHT, false);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);}}java.util.Hashtable hint = new java.util.Hashtable();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];// System.out.println(matrix.getHeight());for (int y = 0; y < matrix.getHeight(); y++) {for (int x = 0; x < matrix.getWidth(); x++) {// 读取图片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];}// 在图片四周形成边框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 > 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)|| (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;} else {// 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) ? 0xff000000: 0xfffffff;}}}BufferedImage image = new BufferedImage(width, height,BufferedImage.TYPE_INT_RGB);image.getRaster().setDataElements(0, 0, width, height, pixels);return image;}/** * 把传入的原始图像按高度和宽度进行缩放，生成符合要求的图标 *  * @param srcImageFile *            源文件地址 * @param height *            目标高度 * @param width *            目标宽度 * @param hasFiller *            比例不对时是否需要补白：true为补白; false为不补白; * @throws IOException */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);elsegraphic.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) {cfltest.encode("caofodfasod么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么么",85, 85, "D:\\ToolKitImage.jpg", "D:\\2013-01.jpg");}}