59 lines
2.2 KiB
Java
59 lines
2.2 KiB
Java
package com.yutou.qqbot.utlis;
|
|
|
|
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 javax.imageio.ImageIO;
|
|
import java.awt.image.BufferedImage;
|
|
import java.io.File;
|
|
import java.io.IOException;
|
|
import java.util.HashMap;
|
|
import java.util.Map;
|
|
|
|
public class QRCodeUtils {
|
|
private static final int BLACK = 0xFF000000;
|
|
private static final int WHITE = 0xFFFFFFFF;
|
|
|
|
|
|
public static File createQRCode(String codeName,String value){
|
|
try {
|
|
String imageType = "jpg";// 图片类型
|
|
MultiFormatWriter multiFormatWriter = new MultiFormatWriter();
|
|
Map<EncodeHintType, String> hints = new HashMap<EncodeHintType, String>();
|
|
hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
|
|
BitMatrix bitMatrix = multiFormatWriter.encode(value, BarcodeFormat.QR_CODE, 400, 400, hints);
|
|
if(!new File("QRCode").exists()){
|
|
boolean mkdirs = new File(("QRCode")).mkdirs();
|
|
System.out.println("create QRCode dir is = "+mkdirs);
|
|
}
|
|
File file1 = new File("QRCode"+File.separator+ codeName + "." + imageType);
|
|
writeToFile(bitMatrix, imageType, file1);
|
|
return file1;
|
|
} catch (WriterException | IOException e) {
|
|
e.printStackTrace();
|
|
}
|
|
return null;
|
|
}
|
|
private static BufferedImage toBufferedImage(BitMatrix matrix) {
|
|
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);
|
|
}
|
|
}
|
|
return image;
|
|
}
|
|
|
|
private static void writeToFile(BitMatrix matrix, String format, File file) throws IOException {
|
|
BufferedImage image = toBufferedImage(matrix);
|
|
if (!ImageIO.write(image, format, file)) {
|
|
throw new IOException("Could not write an image of format " + format + " to " + file);
|
|
}
|
|
}
|
|
}
|