Google ZXing生成二维码工具

柔情只为你懂 2022-02-26 10:40 422阅读 0赞

maven 依赖JAR

<dependency>
       <groupId>com.google.zxing</groupId>
       <artifactId>core</artifactId>
       <version>3.1.0</version>
    </dependency>
    <dependency>
       <groupId>com.google.zxing</groupId>
       <artifactId>javase</artifactId>
       <version>3.1.0</version>
    </dependency>

生成二维码

import com.google.zxing.BarcodeFormat;
    import com.google.zxing.EncodeHintType;
    import com.google.zxing.MultiFormatWriter;
    import com.google.zxing.client.j2se.MatrixToImageWriter;
    import com.google.zxing.common.BitMatrix;
    import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
    import java.io.File;
    import java.nio.file.Path;
    import java.util.HashMap;
    
    public class ZXing {
        public static void main(String[] args) {
            final int width = 400;
            final int height = 400;
            final String format = "png";
            final String content = "http://www.baidu.com";
    
            //定义二维码的参数
            HashMap hints = new HashMap();
            hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
            hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
            hints.put(EncodeHintType.MARGIN, 2);
            //生成二维码
            try {
                //OutputStream stream = new OutputStreamWriter();
                BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height, hints);
                Path file = new File("C:\\abc\\img.png").toPath();
                MatrixToImageWriter.writeToPath(bitMatrix, format, file);
                //MatrixToImageWriter.writeToStream(bitMatrix, format, stream);
            } catch (Exception e) {
                e.printStackTrace();
            }
    
        }
    }

解析二维码

import com.google.zxing.BinaryBitmap;
    import com.google.zxing.EncodeHintType;
    import com.google.zxing.MultiFormatReader;
    import com.google.zxing.Result;
    import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
    import com.google.zxing.common.HybridBinarizer;
    import javax.imageio.ImageIO;
    import java.awt.image.BufferedImage;
    import java.io.File;
    import java.util.HashMap;
    
    public class ReadZXing {
        public static void main(String[] args) throws Exception {
            MultiFormatReader formatReader = new MultiFormatReader();
            File file = new File("C:\\abc\\img.png");
            BufferedImage image = ImageIO.read(file);
            BinaryBitmap binaryBitmap = new BinaryBitmap
                    (new HybridBinarizer(new BufferedImageLuminanceSource(image)));
            //定义二维码的参数
            HashMap hints = new HashMap();
            hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
            Result result = formatReader.decode(binaryBitmap, hints);
            System.out.println("二维码解析结果：" + result.toString());
            System.out.println("二维码的格式：" + result.getBarcodeFormat());
            System.out.println("二维码的文本内容：" + result.getText());
        }
    }