文章轉(zhuǎn)載自:http://blog.csdn.net/lcx46/article/details/13626841
- /**
- *
- */
- package barcode;
-
- 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;
-
- /**
- * @author lichunxi
- *
- */
- public class BarcodeFactory {
- // 圖片寬度的一般
- private static final int IMAGE_WIDTH = 80;
- private static final int IMAGE_HEIGHT = 80;
- private static final int IMAGE_HALF_WIDTH = IMAGE_WIDTH / 2;
- private static final int FRAME_WIDTH = 2;
-
- // 二維碼寫碼器
- 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 {
- // 讀取源圖像
- 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);
- // 生成二維碼
- BitMatrix matrix = mutiWriter.encode(content, BarcodeFormat.QR_CODE,
- width, height, hint);
-
- // 二維矩陣轉(zhuǎn)為一維像素?cái)?shù)組
- 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++) {
- // 讀取圖片
- 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];
- }
- // 在圖片四周形成邊框
- 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 {
- // 此處可以修改二維碼的顏色,,可以分別制定二維碼和背景的顏色;
- 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;
- }
-
- /**
- * 把傳入的原始圖像按高度和寬度進(jìn)行縮放,生成符合要求的圖標(biāo)
- *
- * @param srcImageFile
- * 源文件地址
- * @param height
- * 目標(biāo)高度
- * @param width
- * 目標(biāo)寬度
- * @param hasFiller
- * 比例不對(duì)時(shí)是否需要補(bǔ)白:true為補(bǔ)白; false為不補(bǔ)白;
- * @throws IOException
- */
- private static BufferedImage scale(String srcImageFile, int height,
- int width, boolean hasFiller) throws IOException {
- double ratio = 0.0; // 縮放比例
- File file = new File(srcImageFile);
- BufferedImage srcImage = ImageIO.read(file);
- Image destImage = srcImage.getScaledInstance(width, height,
- BufferedImage.SCALE_SMOOTH);
- // 計(jì)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) {// 補(bǔ)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;
- }
- /**
* 需要導(dǎo)入的jar包:core.jar * 1.jpg為要嵌入到二維碼中的小圖片 * 111.jpg為生成的二維碼圖片 * @param args */ - public static void main(String[] args) {
- BarcodeFactory
- .encode("http://www.baidu.com",
- 300, 300, "D:\\1.jpg", "D:\\111.jpg");
- }
- }
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