import com.google.zxing.*;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import org.apache.commons.io.FileUtils;
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.OutputStream;
import java.util.Hashtable;
/**
* 二维码操作类
* Created by Nemo on 2017/5/19.
*/
public class QRCodeUtil {
private static final String CHARSET = "utf-8";
private static final String FORMAT_NAME = "PNG";
// 二维码尺寸
private static final int QRCODE_SIZE = 200;
// LOGO宽度
private static final int WIDTH = 60;
// LOGO高度
private static final int HEIGHT = 60;
private static BufferedImage createImage(String content, String imgPath,
boolean needCompress) throws Exception {
return createImage(content, imgPath,
needCompress,QRCODE_SIZE);
}
private static BufferedImage createImage(String content, String imgPath,
boolean needCompress,int qrcodeSize) throws Exception {
Hashtable hints = new Hashtable();
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
hints.put(EncodeHintType.CHARACTER_SET, CHARSET);
hints.put(EncodeHintType.MARGIN, 1);
BitMatrix bitMatrix = new MultiFormatWriter().encode(content,
BarcodeFormat.QR_CODE, qrcodeSize, qrcodeSize, hints);
int width = bitMatrix.getWidth();
int height = bitMatrix.getHeight();
BufferedImage image = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
for (int x = 0; x < width; x++) {
for (int y = 0; y < height; y++) {
image.setRGB(x, y, bitMatrix.get(x, y) ? 0xFF000000
: 0xFFFFFFFF);
}
}
if (imgPath == null || "".equals(imgPath)) {
return image;
}
// 插入图片
QRCodeUtil.insertImage(image, imgPath, needCompress,qrcodeSize);
return image;
}
/**
* 插入LOGO
*
* @param source
* 二维码图片
* @param imgPath
* LOGO图片地址
* @param needCompress
* 是否压缩
* @throws Exception
*/
private static void insertImage(BufferedImage source, String imgPath,
boolean needCompress,int qrcodeSize) throws Exception {
File file = new File(imgPath);
if (!file.exists()) {
return;
}
Image src = ImageIO.read(new File(imgPath));
int width = src.getWidth(null);
int height = src.getHeight(null);
if (needCompress) { // 压缩LOGO
if (width > qrcodeSize/QRCODE_SIZE*WIDTH) {
width = qrcodeSize/QRCODE_SIZE*WIDTH;
}
if (height > qrcodeSize/QRCODE_SIZE*HEIGHT) {
height = qrcodeSize/QRCODE_SIZE*HEIGHT;
}
Image image = src.getScaledInstance(width, height,
Image.SCALE_SMOOTH);
BufferedImage tag = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
Graphics g = tag.getGraphics();
g.drawImage(image, 0, 0, null); // 绘制缩小后的图
g.dispose();
src = image;
}
// 插入LOGO
Graphics2D graph = source.createGraphics();
int x = (qrcodeSize - width) / 2;
int y = (qrcodeSize - height) / 2;
graph.drawImage(src, x, y, width, height, null);
Shape shape = new RoundRectangle2D.Float(x, y, width, width, 6, 6);
graph.setStroke(new BasicStroke(3f));
graph.draw(shape);
graph.dispose();
}
/**
* 生成二维码(内嵌LOGO)
*
* @param content
* 内容
* @param imgPath
* LOGO地址
* @param destPath
* 存储地址
* @param needCompress
* 是否压缩LOGO
* @throws Exception
*/
public static void encode(String content, String imgPath, String destPath,
boolean needCompress) throws Exception {
BufferedImage image = QRCodeUtil.createImage(content, imgPath,
needCompress);
// FileUtils.mkdirs(destPath);
//FileUtils.mkdir(destPath, false);
FileUtils.forceMkdir(new File(destPath));
ImageIO.write(image, FORMAT_NAME, new File(destPath));
}
/**
*
* @author eason
* @param content 内容
* @param imgPath LOGO地址
* @param destPath 存储地址
* @param needCompress 是否压缩LOGO
* @param qrcodeSize 二维码大小 宽高
* @throws Exception
*/
public static void encode(String content, String imgPath, String destPath,
boolean needCompress,int qrcodeSize) throws Exception {
BufferedImage image = QRCodeUtil.createImage(content, imgPath,
needCompress,qrcodeSize);
//FileUtils.mkdir(destPath, false);
FileUtils.forceMkdir(new File(destPath));
ImageIO.write(image, FORMAT_NAME, new File(destPath));
}
/**
* 得到默认二维码文件流
* @return
*/
public static BufferedImage getEncodeBuffImg(String content) throws Exception {
BufferedImage image = QRCodeUtil.createImage(content, "",false,400);
return image;
}
/**
* 生成二维码(内嵌LOGO)
*
* @param content
* 内容
* @param imgPath
* LOGO地址
* @param destPath
* 存储地址
* @throws Exception
*/
public static void encode(String content, String imgPath, String destPath)
throws Exception {
QRCodeUtil.encode(content, imgPath, destPath, false);
}
public static void encode(String content, String imgPath, String destPath,int qrcodeSize)
throws Exception {
QRCodeUtil.encode(content, imgPath, destPath, false);
}
/**
* 生成二维码
*
* @param content
* 内容
* @param destPath
* 存储地址
* @param needCompress
* 是否压缩LOGO
* @throws Exception
*/
public static void encode(String content, String destPath,
boolean needCompress) throws Exception {
QRCodeUtil.encode(content, null, destPath, needCompress);
}
/**
* 生成二维码
*
* @param content
* 内容
* @param destPath
* 存储地址
* @throws Exception
*/
public static void encode(String content, String destPath) throws Exception {
QRCodeUtil.encode(content, null, destPath, false);
}
/**
* 生成二维码(内嵌LOGO)
*
* @param content
* 内容
* @param imgPath
* LOGO地址
* @param output
* 输出流
* @param needCompress
* 是否压缩LOGO
* @throws Exception
*/
public static void encode(String content, String imgPath,
OutputStream output, boolean needCompress) throws Exception {
BufferedImage image = QRCodeUtil.createImage(content, imgPath,
needCompress);
ImageIO.write(image, FORMAT_NAME, output);
}
/**
*
* @author eason
* @param content 内容
* @param imgPath LOGO地址
* @param output 输出流
* @param needCompress 是否压缩LOGO
* @param qrcodeSize
* @throws Exception
*/
public static void encode(String content, String imgPath,
OutputStream output, boolean needCompress,int qrcodeSize) throws Exception {
BufferedImage image = QRCodeUtil.createImage(content, imgPath,
needCompress,qrcodeSize);
ImageIO.write(image, FORMAT_NAME, output);
}
public static void encode(String content, OutputStream output,int qrcodeSize)
throws Exception {
QRCodeUtil.encode(content, null, output, false,qrcodeSize);
}
/**
* 生成二维码
*
* @param content
* 内容
* @param output
* 输出流
* @throws Exception
*/
public static void encode(String content, OutputStream output)
throws Exception {
QRCodeUtil.encode(content, null, output, false);
}
/**
* 解析二维码
*
* @param file
* 二维码图片
* @return
* @throws Exception
*/
public static String decode(File file) throws Exception {
BufferedImage image;
image = ImageIO.read(file);
if (image == null) {
return null;
}
BufferedImageLuminanceSource source = new BufferedImageLuminanceSource(
image);
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
Result result;
Hashtable hints = new Hashtable();
hints.put(DecodeHintType.CHARACTER_SET, CHARSET);
result = new MultiFormatReader().decode(bitmap, hints);
String resultStr = result.getText();
return resultStr;
}
/**
* 解析二维码
*
* @param path
* 二维码图片地址
* @return
* @throws Exception
*/
public static String decode(String path) throws Exception {
return QRCodeUtil.decode(new File(path));
}
public static void main(String[] args) throws Exception {
String text = "http://www.link-nemo.com";
QRCodeUtil.encode(text, "", "F:/logo3.png", false,600);
}
}
需要的依赖：
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>javase</artifactId>
<version>3.0.0</version>
</dependency>
