生成二维码 及 添加外边框和中间logo

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;

/*** <p>Title: QRUtil</p>
* <p>Description:生成二维码 </p>
* @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<EncodeHintType, Object> hint = new HashMap<EncodeHintType, Object>();
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"));
}

}