JAVA-使用zxing jar包生成二维码和解析二维码

内容出处https://study.163.com/course/courseMain.htm?courseId=1209288803

GitHub网址https://github.com/zxing/zxing

jar包下载地址https://github.com/zxing/zxing/wiki/Getting-Started-Developing

第一个jar包

 

 

 第二个jar包

 

 总共下载两个jar包

 将两个jar包添加到项目中

生成二维码，源代码

package my;

import java.io.File;
import java.nio.file.Path;
import java.util.HashMap;

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;

public class test
{

    public static void main(String[] args)
    {
        // TODO Auto-generated method stub

        int width = 300;
        int height = 300;
        String content = "https://cn.bing.com/";
        
        //二维码的参数设置
        HashMap<EncodeHintType, Object> hints = new HashMap();
        hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");//字符集
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);//纠错级别
        hints.put(EncodeHintType.MARGIN, 2);//空白
        //hints.put(EncodeHintType.QR_VERSION, 5);//版本1-40,内部会自动适应,不用设置
        
        try
        {
            MultiFormatWriter writer = new MultiFormatWriter();
            BitMatrix bitMatrix = writer.encode(content, BarcodeFormat.QR_CODE, width, height, hints);
            
            Path file = new File("D:\1\2\二维码.png").toPath();
            MatrixToImageWriter.writeToPath(bitMatrix, "png", file);
            
            
        }catch(Exception e)
        {
            e.printStackTrace();        
        }
        
        
    }

}

演示

解析二维码，源代码

package my;

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

import javax.imageio.ImageIO;
import javax.naming.spi.DirStateFactory.Result;

import com.google.zxing.BinaryBitmap;
import com.google.zxing.DecodeHintType;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.NotFoundException;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.HybridBinarizer;

public class test
{

    public static void main(String[] args) throws NotFoundException, IOException
    {
        // TODO Auto-generated method stub

        File file = new File("D:\1\2\二维码.png");
        BufferedImage image = ImageIO.read(file);
        
        //读取图片
        MultiFormatReader formatReader = new MultiFormatReader();
        BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(image)));
        
        //解码参数
        HashMap<DecodeHintType, Object> hints = new HashMap<>();
        hints.put(DecodeHintType.CHARACTER_SET, "UTF-8");
        com.google.zxing.Result result = formatReader.decode(binaryBitmap, hints);
        
        System.out.println("类型：" + result.getBarcodeFormat());
        System.out.println("内容:" + result.getText());
        
        System.out.println("exit");
    }

}

演示

程序员阿飞

2021年5月21日