ars.util.Barcodes Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of ars-core Show documentation
Ars framework core
The newest version!
package ars.util;

import java.util.Map;
import java.util.HashMap;
import java.io.IOException;
import java.awt.image.BufferedImage;

import com.google.zxing.BinaryBitmap;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.DecodeHintType;
import com.google.zxing.EncodeHintType;
import com.google.zxing.ReaderException;
import com.google.zxing.WriterException;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;

/**
 * 条码工具类
 *
 * @author wuyongqiang
 */
public final class Barcodes {
    private Barcodes() {

    }

    /**
     * 将内容编码
     *
     * @param content 图片内容
     * @return 图片对象
     * @throws IOException IO操作异常
     */
    public static BufferedImage encode(String content) throws IOException {
        return encode(content, BarcodeFormat.QR_CODE, 200, 200);
    }

    /**
     * 将内容编码
     *
     * @param content 图片内容
     * @param format  图片格式
     * @param width   图片宽度
     * @param height  图片高度
     * @return 图片对象
     */
    public static BufferedImage encode(String content, BarcodeFormat format, int width, int height) {
        if (content == null) {
            throw new IllegalArgumentException("Content must not be null");
        }
        if (format == null) {
            throw new IllegalArgumentException("BarcodeFormat must not be null");
        }
        if (width < 1) {
            throw new IllegalArgumentException("Width must not be null");
        }
        if (height < 1) {
            throw new IllegalArgumentException("Height must not be null");
        }
        Map hints = new HashMap(1, 1);
        hints.put(EncodeHintType.CHARACTER_SET, Strings.UTF8);
        try {
            BitMatrix matrix = new MultiFormatWriter().encode(content, format, width, height, hints);
            return MatrixToImageWriter.toBufferedImage(matrix);
        } catch (WriterException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 内容解码
     *
     * @param image 图片对象
     * @return 图形内容
     */
    public static String decode(BufferedImage image) {
        if (image == null) {
            throw new IllegalArgumentException("BufferedImage must not be null");
        }
        Map hints = new HashMap(1, 1);
        hints.put(DecodeHintType.CHARACTER_SET, Strings.UTF8);
        BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(image)));
        try {
            return new MultiFormatReader().decode(bitmap, hints).getText();
        } catch (ReaderException e) {
            throw new RuntimeException(e);
        }
    }

}