package cn.edu.zafu;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;

import jp.sourceforge.qrcode.QRCodeDecoder;
import jp.sourceforge.qrcode.data.QRCodeImage;
import jp.sourceforge.qrcode.exception.DecodingFailedException;

public class Decode {
	public static class QRImage implements QRCodeImage {
		BufferedImage bufImg;

		public QRImage(BufferedImage bufImg) {
			this.bufImg = bufImg;
		}

		public int getWidth() {
			return bufImg.getWidth();
		}

		public int getHeight() {
			return bufImg.getHeight();
		}

		public int getPixel(int x, int y) {
			return bufImg.getRGB(x, y);
		}

	}

	public static String decoderQRCode(String imgPath) {
		// QRCode 二维码图片的文件
		File imageFile = new File(imgPath);

		BufferedImage bufImg = null;
		String decodedData = null;
		try {
			bufImg = ImageIO.read(imageFile);

			QRCodeDecoder decoder = new QRCodeDecoder();
			decodedData = new String(decoder.decode(new QRImage(bufImg)));

		} catch (IOException e) {
			System.out.println("Error: " + e.getMessage());
			e.printStackTrace();
		} catch (DecodingFailedException dfe) {
			System.out.println("Error: " + dfe.getMessage());
			dfe.printStackTrace();
		}
		return decodedData;

	}

	public static void main(String[] args) {
		System.out.println(decoderQRCode("1.png"));
	}
}