java生成二维码的三种

今天药忘吃喽~ 2022-06-17 06:39 96阅读 0赞

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 ZXingCreateQRCode {
    	public static void main(String[] args) {
    		int width=300;
    		int height =300;
    		String format="png";
    		String content="www.baidu.com";
    		
    		//定义二维码的参数
    		HashMap hints=new HashMap();
    		//设置编码
    		hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
    		//设置容错等级，等级越高，容量越小
    		hints.put(EncodeHintType.ERROR_CORRECTION,ErrorCorrectionLevel.M);
    		//设置边距
    		hints.put(EncodeHintType.MARGIN, 2);
    		
    		//生成二维码
    		
    		try {
    			BitMatrix bitMatrix = new MultiFormatWriter().encode(content,BarcodeFormat.QR_CODE, width, height);
    			//设置路径
    			 Path file = new File("E:/a.png").toPath();
    			 MatrixToImageWriter.writeToPath(bitMatrix, format, file);//输出图像
    		} catch ( Exception e) {
    			e.printStackTrace();
    		}
    	}
    
    }

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.Result;
    import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
    import com.google.zxing.common.HybridBinarizer;
    
    public class ZXingReadQRCode {
    
    	public static void main(String[] args) {
    		try {
    			MultiFormatReader formatReader = new MultiFormatReader();
    			File file = new File("E:/a.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();
    			// 设置编码
    			hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
    			Result result = formatReader.decode(binaryBitmap, hints);
    
    			System.out.println("解析结果：" + result.toString());
    			System.out.println("解析结果：" + result.getBarcodeFormat());
    			System.out.println("解析结果：" + result.getText());
    		} catch (Exception e) {
    			e.printStackTrace();
    		}
    	}
    
    }
    
    
    
    
     
     
     
     
     import java.awt.Color;
    import java.awt.Graphics2D;
    import java.awt.image.BufferedImage;
    import java.io.File;
    import java.io.UnsupportedEncodingException;
    
    import javax.imageio.ImageIO;
    
    import com.sun.prism.Image;
    import com.swetake.util.Qrcode;
    
    public class CreateQRCode {
    	public static void main(String[] args) throws Exception {
    		Qrcode x = new Qrcode();
    		x.setQrcodeErrorCorrect('M');// 纠错等级
    		x.setQrcodeEncodeMode('B');// N代表数字，A代表a-z，B代表其他字符
    		x.setQrcodeVersion(7);// 版本
    		String qrData = "www.baidu.com";
    		int width = 67 + 12 * (7 - 1);
    		int height = 67 + 12 * (7 - 1);
    
    		BufferedImage bufferedImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_BGR);
    		Graphics2D gs = bufferedImage.createGraphics();
    		gs.setColor(Color.BLACK);
    		gs.setBackground(Color.WHITE);
    		gs.clearRect(0, 0, width, height);
    		int pixoff = 1;// 偏移量
    		byte[] d = qrData.getBytes("gb2312");
    		if (d.length > 0 && d.length < 120) {
    			boolean[][] s = x.calQrcode(d);
    			for (int i = 0; i < s.length; i++) {
    				for (int j = 0; j < s.length; j++) {
    					if (s[j][i]) {
    						gs.fillRect(j * 3+ pixoff, i * 3 + pixoff, 3, 3);
    					}
    				}
    
    			}
    		}
    		gs.dispose();
    		bufferedImage.flush();
    		ImageIO.write(bufferedImage, "png", new File("E:/b.png"));
    	}
    }
     import java.awt.image.BufferedImage;
    import java.io.File;
    
    import javax.imageio.ImageIO;
    
    import jp.sourceforge.qrcode.QRCodeDecoder;
    
    public class ReadQRCode {
    	public static void main(String[] args) throws Exception {
    		File file = new File("E:/b.png");
    		BufferedImage bufferedImage = ImageIO.read(file);
    		QRCodeDecoder codeDecoder = new QRCodeDecoder();
    		String result = new String(codeDecoder.decode(new MYQRCodeImage(bufferedImage)), "gb2312");
    		System.out.println(result);
    	}
    }
    
    
    
    
     
     
    import java.awt.image.BufferedImage;
    
    
    
    
    
    import jp.sourceforge.qrcode.data.QRCodeImage;
    
    
    
    
    
    public class MYQRCodeImage implements QRCodeImage {
      
    
    BufferedImage bufferedImage;
    
    public MYQRCodeImage(BufferedImage bufferedImage) {
      
    
    this.bufferedImage=bufferedImage;
    
    }
    
    
    
    
    
    @Override
    
    public int getHeight() {
      
    
    return bufferedImage.getHeight();
    
    }
    
    
    
    
    
    @Override
    
    public int getPixel(int arg0, int arg1) {
      
    
    return bufferedImage.getRGB(arg0, arg1);
    
    }
    
    
    
    
    
    @Override
    
    public int getWidth() {
      
    
    return bufferedImage.getHeight();
    
    }
    
    
    
    
    
    }
     
     import java.awt.image.BufferedImage;
    
    import jp.sourceforge.qrcode.data.QRCodeImage;
    
    public class MYQRCodeImage implements QRCodeImage {
    	BufferedImage bufferedImage;
    	public MYQRCodeImage(BufferedImage bufferedImage) {
    		this.bufferedImage=bufferedImage;
    	}
    
    	@Override
    	public int getHeight() {
    		return bufferedImage.getHeight();
    	}
    
    	@Override
    	public int getPixel(int arg0, int arg1) {
    		return bufferedImage.getRGB(arg0, arg1);
    	}
    
    	@Override
    	public int getWidth() {
    		return bufferedImage.getHeight();
    	}
    
    }