【Java】zxing生成二维码

最新推荐文章于 2025-06-29 12:59:42 发布

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#二维码 #zxing #Java

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本文介绍了如何在Java项目中集成zxing库来生成二维码。首先，通过maven添加必要的依赖。接着，展示了生成二维码的具体代码实现。最后，分享了运行后的成功结果。

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1、maven依赖

        <!-- zxing QrCode -->
        <dependency>
            <groupId>com.google.zxing</groupId>
            <artifactId>core</artifactId>
            <version>3.2.1</version>
        </dependency>
        <dependency>
            <groupId>com.google.zxing</groupId>
            <artifactId>javase</artifactId>
            <version>3.2.1</version>
        </dependency>

2、代码如下

package com.yealink.version.util;

import com.google.zxing.*;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.nio.file.Path;
import java.util.HashMap;
import java.util.Map;

/**
 * Created by yl1794 on 2018/6/4.
 */
public class QrCodeUtil {

    public static void CreateQrCode(String content, String path){
        int width = 300;
        int height = 300;
        String format = "png";
        //定义二维码的参数
        HashMap map = new HashMap();
        //设置编码
        map.put(EncodeHintType.CHARACTER_SET, "utf-8");
        //设置纠错等级
        map.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
        map.put(EncodeHintType.MARGIN, 2);

        try {
            //生成二维码
            BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height);
            Path file = new File(path).toPath();
            MatrixToImageWriter.writeToPath(bitMatrix, format, file);
        } catch (WriterException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void ReadQrCode(String path){
        try {
            MultiFormatReader multiFormatReader = new MultiFormatReader();
            File file = new File(path);
            BufferedImage image = ImageIO.read(file);
            //定义二维码参数
            Map hints = new HashMap();
            hints.put(EncodeHintType.CHARACTER_SET,"utf-8");

            //获取读取二维码结果
            BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(image)));
            Result result = multiFormatReader.decode(binaryBitmap, hints);

            System.out.println("读取二维码： " + result.toString());
            System.out.println("二维码格式： " + result.getBarcodeFormat());
            System.out.println("二维码内容： " + result.getText());
        } catch (NotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

    public static void main(String[] args){
        CreateQrCode("http://127.0.0.1:8890/api/v1/version/get/3a345d5144da45d79d9f195f1e07d364","E:\\QrCode\\test.png");
        ReadQrCode("E:\\QrCode\\test.png");
    }
}

3、运行结果