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cn.net.wanmo.common.zxing.QRCodeGenerate Maven / Gradle / Ivy
package cn.net.wanmo.common.zxing;
import com.google.zxing.*;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
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.HashMap;
import java.util.Hashtable;
import java.util.Map;
public class QRCodeGenerate {
private static Logger logger = LoggerFactory.getLogger(QRCodeGenerate.class);
/**
* 默认编码
*/
private String charset = "UTF-8";
/**
* 图片格式
*/
private String formatName = "png";
/**
* 二维码尺寸
*/
private int qrcodeSize = 300;
/**
* 二维码文件
*/
private File qrcodeFile;
/**
* 二维码数据流
*/
private OutputStream qrcodeOut;
/**
* LOGO尺寸
*/
private int logoSize = 60;
/**
* LOGO文件
*/
private File logoFile;
/**
* 是否压缩 logo
*/
private boolean logoCompress = false;
public QRCodeGenerate() {
try {
this.qrcodeFile = File.createTempFile("qrcode_", "." + this.formatName);
} catch (Exception e) {
}
}
/**
* 默认编码
*/
public QRCodeGenerate charset(String charset) {
this.charset = charset;
return this;
}
/**
* 图片格式
*/
public QRCodeGenerate formatName(String formatName) {
this.formatName = formatName;
return this;
}
/**
* 图片格式
*/
public QRCodeGenerate qrcodeSize(int qrcodeSize) {
this.qrcodeSize = qrcodeSize;
return this;
}
/**
* 二维码文件
*/
public QRCodeGenerate qrcodeFile(File qrcodeFile) {
this.qrcodeFile = qrcodeFile;
return this;
}
/**
* 二维码数据流
*/
public QRCodeGenerate qrcodeOut(OutputStream qrcodeOut) {
this.qrcodeOut = qrcodeOut;
return this;
}
/**
* LOGO图片格式
*/
public QRCodeGenerate logoSize(int logoSize) {
this.logoSize = logoSize;
return this;
}
/**
* LOGO文件
*/
public QRCodeGenerate logoFile(File logoFile) {
this.logoFile = logoFile;
return this;
}
/**
* 是否压缩 LOGO
*/
public QRCodeGenerate logoCompress(boolean logoCompress) {
this.logoCompress = logoCompress;
return this;
}
public static QRCodeGenerate build() {
return new QRCodeGenerate();
}
/**
* 生成二维码
*/
public File generateOut(String data) {
return generateOut2(data);
}
/**
* 生成二维码
*/
public File generateOut1(String data) {
try {
BitMatrix bitMatrix = generateBitMatrix(data);
MatrixToImageWriter.writeToStream(bitMatrix, this.formatName, this.qrcodeOut);
logger.info("二维码已生成并保存到: {}", qrcodeFile.getAbsolutePath());
} catch (Exception e) {
logger.error("二维码生成异常: " + e.getMessage(), e);
}
return qrcodeFile;
}
/**
* 生成二维码
*/
public File generateOut2(String data) {
try {
BufferedImage image = generateBufferedImage(data);
ImageIO.write(image, this.formatName, this.qrcodeOut);
logger.info("二维码已生成并保存到: {}", qrcodeFile.getAbsolutePath());
} catch (Exception e) {
logger.error("二维码生成异常: " + e.getMessage(), e);
}
return qrcodeFile;
}
/**
* 生成二维码
*/
public File generateFile(String data) {
return generateFile2(data);
}
/**
* 生成二维码
*/
public File generateFile1(String data) {
try {
BitMatrix bitMatrix = generateBitMatrix(data);
MatrixToImageWriter.writeToPath(bitMatrix, this.formatName, qrcodeFile.toPath());
logger.info("二维码已生成并保存到: {}", qrcodeFile.getAbsolutePath());
} catch (Exception e) {
logger.error("二维码生成异常: " + e.getMessage(), e);
}
return qrcodeFile;
}
/**
* 生成二维码
*/
public File generateFile2(String data) {
try {
BufferedImage image = generateBufferedImage(data);
ImageIO.write(image, this.formatName, this.qrcodeFile);
logger.info("二维码已生成并保存到: {}", qrcodeFile.getAbsolutePath());
} catch (Exception e) {
logger.error("二维码生成异常: " + e.getMessage(), e);
}
return qrcodeFile;
}
/**
* 二维码位图对象
*
* @param data 数据
* @return 对象
* @throws WriterException
*/
public BitMatrix generateBitMatrix(String data) throws WriterException {
Map hints = new HashMap<>();
hints.put(EncodeHintType.CHARACTER_SET, this.charset); // 设置字符编码
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H); // 错误纠正级别
hints.put(EncodeHintType.MARGIN, 1); // 二维码边距
MultiFormatWriter writer = new MultiFormatWriter();
BitMatrix bitMatrix = writer.encode(data, BarcodeFormat.QR_CODE, this.qrcodeSize, this.qrcodeSize, hints);
return bitMatrix;
}
/**
* 二维码位图对象
*
* @param data 数据
* @return 对象
* @throws WriterException
*/
public BufferedImage generateBufferedImage(String data) throws WriterException {
BitMatrix bitMatrix = generateBitMatrix(data);
BufferedImage bufferedImage = toBufferedImage(bitMatrix);
{ // 添加 Logo
addLogo(bufferedImage);
}
return bufferedImage;
}
/**
* 获取 二维码中的内容
*
* @return 内容
* @throws Exception
*/
public String parse() {
try {
if (this.qrcodeFile == null || this.qrcodeFile.exists() == false) {
return null;
}
BufferedImage image = ImageIO.read(this.qrcodeFile);
BufferedImageLuminanceSource source = new BufferedImageLuminanceSource(image);
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
Hashtable hints = new Hashtable();
hints.put(DecodeHintType.CHARACTER_SET, this.charset);
Result result = new MultiFormatReader().decode(bitmap, hints);
return result.getText();
} catch (Exception e) {
logger.error("二维码解析异常: " + e.getMessage(), e);
return null;
}
}
/**
* 添加 Logo
*
* @param source 二维码源图
*/
private void addLogo(BufferedImage source) {
try {
if (this.logoFile == null || this.logoFile.exists() == false) {
return;
}
Image logoImage = ImageIO.read(this.logoFile);
int width = logoImage.getWidth(null);
int height = logoImage.getHeight(null);
if (this.logoCompress) { // 压缩LOGO
if (width > this.logoSize) {
width = this.logoSize;
}
if (height > this.logoSize) {
height = this.logoSize;
}
Image tempImage = logoImage.getScaledInstance(width, height, Image.SCALE_SMOOTH);
BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics g = tag.getGraphics();
g.drawImage(tempImage, 0, 0, null); // 绘制缩小后的图
g.dispose();
logoImage = tempImage;
}
{ // 插入LOGO
Graphics2D graph = source.createGraphics();
int x = (this.qrcodeSize - width) / 2;
int y = (this.qrcodeSize - height) / 2;
graph.drawImage(logoImage, 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();
}
} catch (Exception e) {
logger.error("二维码添加logo异常: " + e.getMessage(), e);
}
}
/**
* BitMatrix 转为 BufferedImage
*/
private BufferedImage toBufferedImage(BitMatrix bitMatrix) {
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) ? Color.BLACK.getRGB() : Color.WHITE.getRGB());
}
}
return image;
}
}
