JAva zxing QRコード

package com.aldx.emp.datacenter.common.utils;
import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.util.HashMap; import java.util.Map;
import javax.imageio.ImageIO;
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;
/**

画像ライタ

を構成する.

@author 18316

*/public class MatrixToImageWriter { private static final int BLACK = 0xFF000000; private static final int WHITE = 0xFFFFFFFF;

private MatrixToImageWriter() {
}

public 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;
}

public 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);
	}
}
public static void qrCode(String path,String content) {
	try {
		String imageType = "jpg";//     
		MultiFormatWriter multiFormatWriter = new MultiFormatWriter();
		Map hints = new HashMap();
		hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
		BitMatrix bitMatrix = multiFormatWriter.encode(content, BarcodeFormat.QR_CODE, 100, 100, hints);
		File file1 = new File(path);
		MatrixToImageWriter.writeToFile(bitMatrix, imageType, file1);
	} catch (WriterException e) {
		e.printStackTrace();
	} catch (IOException e) {
		e.printStackTrace();
	}
}

}