关于java的二维码的生成与解析

时间:2021-08-04 08:24:38

本文说的是通过zxing实现二维码的生成与解析,看着很简单,直接上代码

import java.io.File;
import java.io.IOException;
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.WriterException;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel; public class TestZXing {
public static void main(String[] args) {
int width=300;
int height=300;
String format="png";
String contents="www.baidu.com";
HashMap map=new HashMap();
map.put(EncodeHintType.CHARACTER_SET, "utf-8");
map.put(EncodeHintType.ERROR_CORRECTION,ErrorCorrectionLevel.M);
map.put(EncodeHintType.MARGIN, 0);
try {
BitMatrix bm = new MultiFormatWriter().encode(contents, BarcodeFormat.QR_CODE, width, height);
Path file=new File("D:/img.png").toPath();
MatrixToImageWriter.writeToPath(bm, format, file);
} catch (WriterException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}

通过上面的代码则会生成一个内容链接为www.baidu.com的二维码

关于java的二维码的生成与解析

对这个二维码的解析的代码如下

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.HashMap; import javax.imageio.ImageIO; import com.google.zxing.BinaryBitmap;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.NotFoundException;
import com.google.zxing.Result;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.HybridBinarizer; public class TestRead {
public static void main(String[] args) {
try {
MultiFormatReader reader=new MultiFormatReader();//需要详细了解MultiFormatReader的小伙伴可以点我一下官方去看文档
File f=new File("D:/img.png");
BufferedImage image=ImageIO.read(f);
BinaryBitmap bb=new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(image)));
HashMap map =new HashMap();
map.put(EncodeHintType.CHARACTER_SET, "utf-8");
Result result = reader.decode(bb,map);
System.out.println("解析结果:"+result.toString());
System.out.println("二维码格式类型:"+result.getBarcodeFormat());
System.out.println("二维码文本内容:"+result.getText());
} catch (NotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} }
}

执行的结果如下

解析结果:www.baidu.com
二维码格式类型:QR_CODE
二维码文本内容:www.baidu.com

具体的jar包小伙伴可以自行下载

链接:http://pan.baidu.com/s/1dFxQWKx 密码:kcjx