java解析二维码

java通过二维码图片解析出二维码中在数据

import com.google.zxing.*;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.HybridBinarizer;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

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 QrcodeUtil {

    private static Logger logger = LogManager.getLogger();

    public void encode() {
    }

    /**
     * 二维码解码
     * @param filePath
     * @return
     */
    public static String decode(String filePath) {
        return decode(new File(filePath));
    }

    /**
     * 二维码解码
     * @param file
     * @return
     */
    public static String decode(File file) {

        BufferedImage image;

        try {
            image = ImageIO.read(file);

            LuminanceSource source = new BufferedImageLuminanceSource(image);
            Binarizer binarizer = new HybridBinarizer(source);
            BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);
            Map<DecodeHintType, Object> hints = new HashMap<DecodeHintType, Object>();
            hints.put(DecodeHintType.CHARACTER_SET, "UTF-8");
            Result result = new MultiFormatReader().decode(binaryBitmap, hints);// 对图像进行解码
            return result.getText();
        } catch (IOException e) {
            e.printStackTrace();
            logger.error("QrcodeUtil decode IOException");
        } catch (NotFoundException e) {
            e.printStackTrace();
            logger.error("QrcodeUtil decode NotFoundException");
        }

        return null;
    }

}