import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.Hashtable;
import javax.imageio.ImageIO;
import org.apache.log4j.Logger;
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;
public final class MatrixCodeUtil{
private static Logger logger = Logger.getLogger(MatrixCodeUtil.class);
private static final int BLACK = 0xFF000000;
private static final int WHITE = 0xFFFFFFFF;
public static BitMatrix createQRCode(String content, int width, int height){
Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
//设置字符编码
hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
// 指定纠错等级
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
BitMatrix matrix = null;
try {
matrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height, hints);
} catch (WriterException e) {
logger.error(e);
e.printStackTrace();
}
return matrix;
}
public static void writeToFile(BitMatrix matrix, String format, File file)
throws IOException {
int width = matrix.getWidth();
int height = matrix.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, matrix.get(x, y) ? BLACK : WHITE);
}
}
ImageIO.write(image, format, file);
}
public static void addLogoWriteToFile(BitMatrix matrix, String targetPath, String logoPath, int logoPart){
int width = matrix.getWidth();
int height = matrix.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, matrix.get(x, y) ? BLACK : WHITE);
}
}
BufferedImage logo = null;
try {
logo = ImageIO.read(new File(logoPath));
} catch (IOException e) {
e.printStackTrace();
}
Graphics2D g = image.createGraphics();
//考虑到logo照片贴到二维码中,建议大小不要超过二维码的1/5;
int logoWidth = width / logoPart;
int logoHeight = height / logoPart;
//logo起始位置,此目的是为logo居中显示
int x = (height - logoWidth) / 2;
int y = (height - logoHeight) / 2;
//绘制图
g.drawImage(logo, x, y, logoWidth, logoHeight, null);
g.setStroke(new BasicStroke(2));
g.setColor(Color.GRAY);
g.drawRect(x, y, logoWidth, logoHeight);
g.dispose();
try {
ImageIO.write(image, "jpg", new File(targetPath));
} catch (IOException e) {
logger.error(e);
e.printStackTrace();
}
}
public static void main(String [] arr){
try {
String content = "['name':'test','company':'11111']";
String targetPath = "e:/Desktop/test.jpg";
String logoPath = "e:/Desktop/logo_comp.jpg";
int width = 400;
int height = 400;
int logoPart = 6;
BitMatrix matrix = MatrixCodeUtil.createQRCode(content, width, height);
MatrixCodeUtil.addLogoWriteToFile(matrix, targetPath, logoPath, logoPart);
} catch (Exception e) {
e.printStackTrace();
}
}
}