上一篇介绍了普通的二位码的生成与解析，本篇来介绍两种工具类生成带Logo的二维码的实例
下载jar包地址：http://download.youkuaiyun.com/detail/gao36951/8161861
首先介绍Zxing生成带logo的二维码
工具类
package com.util;
import com.google.zxing.LuminanceSource;
import java.awt.Graphics2D;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
public final class BufferedImageLuminanceSource extends LuminanceSource {
private final BufferedImage image;
private final int left;
private final int top;
public BufferedImageLuminanceSource(BufferedImage image) {
this(image, 0, 0, image.getWidth(), image.getHeight());
}
public BufferedImageLuminanceSource(BufferedImage image, int left, int top, int width, int height) {
super(width, height);
int sourceWidth = image.getWidth();
int sourceHeight = image.getHeight();
if (left + width > sourceWidth || top + height > sourceHeight) {
throw new IllegalArgumentException("Crop rectangle does not fit within image data.");
}
for (int y = top; y < top + height; y++) {
for (int x = left; x < left + width; x++) {
if ((image.getRGB(x, y) & 0xFF000000) == 0) {
image.setRGB(x, y, 0xFFFFFFFF); // = white
}
}
}
this.image = new BufferedImage(sourceWidth, sourceHeight, BufferedImage.TYPE_BYTE_GRAY);
this.image.getGraphics().drawImage(image, 0, 0, null);
this.left = left;
this.top = top;
}
@Override
public byte[] getRow(int y, byte[] row) {
if (y < 0 || y >= getHeight()) {
throw new IllegalArgumentException("Requested row is outside the image: " + y);
}
int width = getWidth();
if (row == null || row.length < width) {
row = new byte[width];
}
image.getRaster().getDataElements(left, top + y, width, 1, row);
return row;
}
@Override
public byte[] getMatrix() {
int width = getWidth();
int height = getHeight();
int area = width * height;
byte[] matrix = new byte[area];
image.getRaster().getDataElements(left, top, width, height, matrix);
return matrix;
}
@Override
public boolean isCropSupported() {
return true;
}
@Override
public LuminanceSource crop(int left, int top, int width, int height) {
return new BufferedImageLuminanceSource(image, this.left + left, this.top + top, width, height);
}
@Override
public boolean isRotateSupported() {
return true;
}
@Override
public LuminanceSource rotateCounterClockwise() {
int sourceWidth = image.getWidth();
int sourceHeight = image.getHeight();
AffineTransform transform = new AffineTransform(0.0, -1.0, 1.0, 0.0, 0.0, sourceWidth);
BufferedImage rotatedImage = new BufferedImage(sourceHeight, sourceWidth, BufferedImage.TYPE_BYTE_GRAY);
Graphics2D g = rotatedImage.createGraphics();
g.drawImage(image, transform, null);
g.dispose();
int width = getWidth();
return new BufferedImageLuminanceSource(rotatedImage, top, sourceWidth - (left + width), getHeight(), width);
}
}生成二维码类
package com.zxing.create;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Component;
import java.awt.Graphics2D;
import java.awt.MediaTracker;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.OutputStream;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import javax.imageio.ImageIO;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.Binarizer;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.EncodeHintType;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.Result;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import com.util.BufferedImageLuminanceSource;
/**
* @Description: (二维码)
* @author：yqgao
* @date：2014-11-7 下午05:27:13
*/
public class ZXingCode
{
public static void main(String[] args) throws WriterException
{
String content = "http://blog.youkuaiyun.com/gao36951";
String filePath = "D:/二维码生成/weixin.jpg";
try
{
File file = new File(filePath);
ZXingCode zp = new ZXingCode();
BufferedImage bim = zp.getQR_CODEBufferedImage(content, BarcodeFormat.QR_CODE, 300, 300, zp.getDecodeHintType());
ImageIO.write(bim, "jpeg", file);
zp.addLogo_QRCode(file, new File("D:/logo/logo3.jpg"), new LogoConfig());
// Thread.sleep(5000);
// zp.parseQR_CODEImage(new File("D:/二维码生成/TDC-test.png"));
}
catch (Exception e)
{
e.printStackTrace();
}
}
/**
* 给二维码图片添加Logo
*
* @param qrPic
* @param logoPic
*/
public void addLogo_QRCode(File qrPic, File logoPic, LogoConfig logoConfig)
{
try
{
if (!qrPic.isFile() || !logoPic.isFile())
{
System.out.print("file not find !");
System.exit(0);
}
/**
* 读取二维码图片，并构建绘图对象
*/
BufferedImage image = ImageIO.read(qrPic);
Graphics2D g = image.createGraphics();
/**
* 读取Logo图片
*/
BufferedImage logo = ImageIO.read(logoPic);
/**
* 设置logo的大小,本人设置为二维码图片的20%,因为过大会盖掉二维码
*/
int widthLogo = logo.getWidth(null)>image.getWidth()*2/10?(image.getWidth()*2/10):logo.getWidth(null),
heightLogo = logo.getHeight(null)>image.getHeight()*2/10?(image.getHeight()*2/10):logo.getHeight(null);
// 计算图片放置位置
/**
* logo放在中心
*/
/* int x = (image.getWidth() - widthLogo) / 2;
int y = (image.getHeight() - heightLogo) / 2;*/
/**
* logo放在右下角
*/
int x = (image.getWidth() - widthLogo);
int y = (image.getHeight() - heightLogo);
//开始绘制图片
g.drawImage(logo, x, y, widthLogo, heightLogo, null);
g.drawRoundRect(x, y, widthLogo, heightLogo, 15, 15);
g.setStroke(new BasicStroke(logoConfig.getBorder()));
g.setColor(logoConfig.getBorderColor());
g.drawRect(x, y, widthLogo, heightLogo);
g.dispose();
logo.flush();
image.flush();
ImageIO.write(image, "png", new File("D:/二维码生成/TDC-"/*+new Date().getTime()*/+"test.png"));
}
catch (Exception e)
{
e.printStackTrace();
}
}
/**
* 二维码的解析
*
* @param file
*/
public void parseQR_CODEImage(File file)
{
try
{
MultiFormatReader formatReader = new MultiFormatReader();
// File file = new File(filePath);
if (!file.exists())
{
return;
}
BufferedImage image = ImageIO.read(file);
LuminanceSource source = new BufferedImageLuminanceSource(image);
Binarizer binarizer = new HybridBinarizer(source);
BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);
Map hints = new HashMap();
hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
Result result = formatReader.decode(binaryBitmap, hints);
System.out.println("result = " + result.toString());
System.out.println("resultFormat = " + result.getBarcodeFormat());
System.out.println("resultText = " + result.getText());
}
catch (Exception e)
{
e.printStackTrace();
}
}
/**
* 将二维码生成为文件
*
* @param bm
* @param imageFormat
* @param file
*/
public void decodeQR_CODE2ImageFile(BitMatrix bm, String imageFormat, File file)
{
try
{
if (null == file || file.getName().trim().isEmpty())
{
throw new IllegalArgumentException("文件异常，或扩展名有问题！");
}
BufferedImage bi = fileToBufferedImage(bm);
ImageIO.write(bi, "apng", file);
}
catch (Exception e)
{
e.printStackTrace();
}
}
/**
* 构建初始化二维码
*
* @param bm
* @return
*/
public BufferedImage fileToBufferedImage(BitMatrix bm)
{
BufferedImage image = null;
try
{
int w = bm.getWidth(), h = bm.getHeight();
image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
for (int x = 0; x < w; x++)
{
for (int y = 0; y < h; y++)
{
image.setRGB(x, y, bm.get(x, y) ? 0xFF000000 : 0xFFCCDDEE);
}
}
}
catch (Exception e)
{
e.printStackTrace();
}
return image;
}
/**
* 生成二维码bufferedImage图片
*
* @param content
* 编码内容
* @param barcodeFormat
* 编码类型
* @param width
* 图片宽度
* @param height
* 图片高度
* @param hints
* 设置参数
* @return
*/
public BufferedImage getQR_CODEBufferedImage(String content, BarcodeFormat barcodeFormat, int width, int height, Map<EncodeHintType, ?> hints)
{
MultiFormatWriter multiFormatWriter = null;
BitMatrix bm = null;
BufferedImage image = null;
try
{
multiFormatWriter = new MultiFormatWriter();
// 参数顺序分别为：编码内容，编码类型，生成图片宽度，生成图片高度，设置参数
bm = multiFormatWriter.encode(content, barcodeFormat, width, height, hints);
int w = bm.getWidth();
int h = bm.getHeight();
image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
// 开始利用二维码数据创建Bitmap图片，分别设为白（0xFFFFFFFF）黑（0xFF000000）两色
for (int x = 0; x < w; x++)
{
for (int y = 0; y < h; y++)
{
image.setRGB(x, y, bm.get(x, y) ? 0xFF000000 : 0xFFCCDDEE);
}
}
}
catch (WriterException e)
{
e.printStackTrace();
}
return image;
}
/**
* 设置二维码的格式参数
*
* @return
*/
public Map<EncodeHintType, Object> getDecodeHintType()
{
// 用于设置QR二维码参数
Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();
// 设置QR二维码的纠错级别（H为最高级别）具体级别信息
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
// 设置编码方式
hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
hints.put(EncodeHintType.MARGIN, 0);
hints.put(EncodeHintType.MAX_SIZE, 350);
hints.put(EncodeHintType.MIN_SIZE, 100);
return hints;
}
}
class LogoConfig
{
// logo默认边框颜色
public static final Color DEFAULT_BORDERCOLOR = Color.WHITE;
// logo默认边框宽度
public static final int DEFAULT_BORDER = 2;
// logo大小默认为照片的1/5
public static final int DEFAULT_LOGOPART = 5;
private final int border = DEFAULT_BORDER;
private final Color borderColor;
private final int logoPart;
/**
* Creates a default config with on color {@link #BLACK} and off color
* {@link #WHITE}, generating normal black-on-white barcodes.
*/
public LogoConfig()
{
this(DEFAULT_BORDERCOLOR, DEFAULT_LOGOPART);
}
public LogoConfig(Color borderColor, int logoPart)
{
this.borderColor = borderColor;
this.logoPart = logoPart;
}
public Color getBorderColor()
{
return borderColor;
}
public int getBorder()
{
return border;
}
public int getLogoPart()
{
return logoPart;
}
}生成的带logo的二维码如下图
下面介绍QR CODE 生成带Logo的二维码的实例
package com.qrcode.create;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;
import com.swetake.util.Qrcode;
/**
* @作者 Relieved
* @创建日期 2014年11月8日
* @描述 （带logo二维码）
* @版本 V 1.0
*/
public class Logo_Two_Code {
/**
* 生成二维码(QRCode)图片
* @param content 二维码图片的内容
* @param imgPath 生成二维码图片完整的路径
* @param ccbpath 二维码图片中间的logo路径
*/
public static int createQRCode(String content, String imgPath,String ccbPath,int version) {
try {
Qrcode qrcodeHandler = new Qrcode();
//设置二维码排错率，可选L(7%)、M(15%)、Q(25%)、H(30%)，排错率越高可存储的信息越少，但对二维码清晰度的要求越小
qrcodeHandler.setQrcodeErrorCorrect('M');
//N代表数字,A代表字符a-Z,B代表其他字符
qrcodeHandler.setQrcodeEncodeMode('B');
// 设置设置二维码版本，取值范围1-40，值越大尺寸越大，可存储的信息越大
qrcodeHandler.setQrcodeVersion(version);
// 图片尺寸
int imgSize =67 + 12 * (version - 1) ;
byte[] contentBytes = content.getBytes("gb2312");
BufferedImage image = new BufferedImage(imgSize, imgSize, BufferedImage.TYPE_INT_RGB);
Graphics2D gs = image.createGraphics();
gs.setBackground(Color.WHITE);
gs.clearRect(0, 0, imgSize, imgSize);
// 设定图像颜色 > BLACK
gs.setColor(Color.BLUE);
// 设置偏移量 不设置可能导致解析出错
int pixoff = 2;
// 输出内容 > 二维码
if (contentBytes.length > 0 && contentBytes.length < 130) {
boolean[][] codeOut = qrcodeHandler.calQrcode(contentBytes);
for (int i = 0; i < codeOut.length; i++) {
for (int j = 0; j < codeOut.length; j++) {
if (codeOut[j][i]) {
gs.fillRect(j * 3 + pixoff, i * 3 + pixoff, 3, 3);
}
}
}
} else {
System.err.println("QRCode content bytes length = "
+ contentBytes.length + " not in [ 0,125]. ");
return -1;
}
Image logo = ImageIO.read(new File(ccbPath));//实例化一个Image对象。
int widthLogo = logo.getWidth(null)>image.getWidth()*2/10?(image.getWidth()*2/10):logo.getWidth(null),
heightLogo = logo.getHeight(null)>image.getHeight()*2/10?(image.getHeight()*2/10):logo.getWidth(null);
/**
* logo放在中心
*/
int x = (image.getWidth() - widthLogo) / 2;
int y = (image.getHeight() - heightLogo) / 2;
gs.drawImage(logo, x, y, widthLogo, heightLogo, null);
gs.dispose();
image.flush();
// 生成二维码QRCode图片
File imgFile = new File(imgPath);
ImageIO.write(image, "png", imgFile);
} catch (Exception e)
{
e.printStackTrace();
return -100;
}
return 0;
}
public static void main(String[] args) {
String imgPath = "D:/二维码生成/logo_QRCode.png";
String logoPath = "D:/logo/logo3.jpg";
String encoderContent = "http://blog.youkuaiyun.com/gao36951";
Logo_Two_Code logo_Two_Code = new Logo_Two_Code();
logo_Two_Code.createQRCode(encoderContent, imgPath, logoPath,8);
}
}生成带Logo的二维码如下图：
注意：
引用12楼
有一个问题是二维码的黑白颜色弄反了，导致扫一下无法识别，希望大家别犯这个错儿了……
扫一扫
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