本文共 7339 字，大约阅读时间需要 24 分钟。

package cn.sigangjun.frame.util;import java.awt.Color;import java.awt.Font;import java.awt.Graphics;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;/*** 
Title: QRUtil
* 
Description:生成二维码 
* @author sigangjun* @date 2016-2-14 下午2:41:38*/public class QRUtil {	// 二维码中间的LOGO图片设置	private static final int IMAGE_WIDTH = 80; // 宽度	private static final int IMAGE_HEIGHT = 80; // 高度	private static final int IMAGE_HALF_WIDTH = IMAGE_WIDTH / 2;	private static final int FRAME_WIDTH = 6; // 距离二维码	// 二维码写码器	private static MultiFormatWriter mutiWriter = new MultiFormatWriter();	/**	 * 添加在指定位置追加图片水印	 * 	 * @param waterImage	 *            --水印文件地址	 * @param img	 *            -- 目标	 * @param x	 *            --x坐标	 * @param y	 *            --y坐标	 */	public final static BufferedImage addWaterImage(String waterImage, BufferedImage img, int x, int y) {		try {			// 目标文件			int width = img.getWidth(null);			int height = img.getHeight(null);			File _filebiao = new File(waterImage);			BufferedImage image = ImageIO.read(_filebiao);			Graphics g = image.createGraphics();			g.drawImage(img, x, y, width, height, null);			g.dispose();			return image;		} catch (Exception e) {			e.printStackTrace();			return null;		}	}	/**	 * 添加在指定位置追加文字水印	 * 	 * @param text	 *            --要添加的文字	 * @param img	 *            --目标	 * @param fontName	 *            --字体	 * @param fontStyle	 *            --样式	 * @param color	 *            --字体颜色	 * @param fontSize	 *            --字体大小	 * @param x	 *            --x坐标	 * @param y	 *            --y坐标	 * @return	 */	public static BufferedImage addWaterText(String text, BufferedImage img, String fontName, int fontStyle, Color color, int fontSize, int x, int y) {		try {			// 目标文件			int width = img.getWidth(null);			int height = img.getHeight(null);			Graphics g = img.createGraphics();			g.drawImage(img, 0, 0, width, height, null);			g.setColor(color);			g.setFont(new Font(fontName, fontStyle, fontSize));			g.drawString(text, x, y + fontSize);			g.dispose();			return img;		} catch (Exception e) {			System.out.println(e);			return null;		}	}	/**	 * 	 * 生成对应的二维码	 * 	 * @param text	 *            --二维码内容	 * @param width	 *            --二维码图片宽度	 * @param height	 *            --二维码图片高度	 * @param srcImagePath	 *            -- logo图片地址	 * @return	 * @throws WriterException	 * @throws IOException	 */	public static BufferedImage createQR(String text, int width, int height, String srcImagePath) throws WriterException, IOException {		// 读取源图像		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
   
     hint = new HashMap
    
     ();		hint.put(EncodeHintType.CHARACTER_SET, "utf-8");		hint.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);		hint.put(EncodeHintType.MARGIN, 0);		// 生成二维码		BitMatrix matrix = mutiWriter.encode(text, 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++) {				// 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);			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 WriterException, IOException {		// 生成二维码		BufferedImage img = QRUtil.createQR("http://sigangjun.cn/", 310, 310, "T:\\tmp\\erweima\\logo.png");		// 追加二维码模板		img = QRUtil.addWaterImage("T:\\tmp\\erweima\\template.jpg", img, 147, 200);		// 追加文字		img = QRUtil.addWaterText("北美海棠新品种", img, "微软雅黑", 0, Color.BLACK, 25, 597, 446);		img = QRUtil.addWaterText("PBMM00000018", img, "微软雅黑", 0, Color.red, 25, 597, 500);		ImageIO.write(img, "jpg", new File("T:\\tmp\\erweima\\generator.png"));	}}