자바 로그 가 있 는 QR 코드 생 성

  
        
            com.google.zxing
            javase
            3.1.0
        
        
            com.google.zxing
            core
            3.3.3
            compile
        

package com.centnet.chakra.core.utils;


import cn.hutool.extra.qrcode.QrCodeUtil;
import cn.hutool.extra.qrcode.QrConfig;
import com.google.zxing.*;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.OutputStream;
import java.util.Hashtable;
import java.util.Random;

/**
 *         
 *
 * @author 。。。。
 */
public class QRCodeUtil {


    private static final String CHARSET = "utf-8";
    private static final String FORMAT = "JPG";

    /**
     *      
     */
    private static final int QRCODE_SIZE = 300;

    /**
     * LOGO  
     */
    private static final int LOGO_WIDTH = 60;

    /**
     * LOGO  
     */
    private static final int LOGO_HEIGHT = 60;


    /**
     *   LOGO
     *
     * @param source            
     * @param logoPath     LOGO    
     * @param needCompress     
     * @throws Exception
     */
    private static void insertImage(BufferedImage source, String logoPath, boolean needCompress) throws Exception {
        File file = new File(logoPath);
        if (!file.exists()) {
            throw new Exception("logo file not found.");
        }
        Image src = ImageIO.read(new File(logoPath));
        int width = src.getWidth(null);
        int height = src.getHeight(null);
        //   LOGO
        if (needCompress) {
            if (width > LOGO_WIDTH) {
                width = LOGO_WIDTH;
            }
            if (height > LOGO_HEIGHT) {
                height = LOGO_HEIGHT;
            }
            Image image = src.getScaledInstance(width, height, Image.SCALE_SMOOTH);
            BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
            Graphics g = tag.getGraphics();
            //        
            g.drawImage(image, 0, 0, null);
            g.dispose();
            src = image;
        }
        //   LOGO
        Graphics2D graph = source.createGraphics();
        int x = (QRCODE_SIZE - width) / 2;
        int y = (QRCODE_SIZE - height) / 2;
        graph.drawImage(src, x, y, width, height, null);
        Shape shape = new RoundRectangle2D.Float(x, y, width, width, 6, 6);
        graph.setStroke(new BasicStroke(3f));
        graph.draw(shape);
        graph.dispose();
    }


    private static BufferedImage createImage(String content, String logoPath, boolean needCompress) throws Exception {
        Hashtable hints = new Hashtable();
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
        hints.put(EncodeHintType.CHARACTER_SET, CHARSET);
        hints.put(EncodeHintType.MARGIN, 1);
        BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, QRCODE_SIZE, QRCODE_SIZE,
                hints);
        int width = bitMatrix.getWidth();
        int height = bitMatrix.getHeight();
        BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
        for (int x = 0; x < width; x++) {
            for (int y = 0; y < height; y++) {
                image.setRGB(x, y, bitMatrix.get(x, y) ? 0xFF000000 : 0xFFFFFFFF);
            }
        }
        if (logoPath == null || "".equals(logoPath)) {
            return image;
        }
        //     
        QRCodeUtil.insertImage(image, logoPath, needCompress);
        return image;
    }


    /**
     *      (  LOGO)
     *         ，         
     *
     * @param content        
     * @param logoPath     LOGO  
     * @param destPath         
     * @param needCompress     LOGO
     * @throws Exception
     */
    public static String encode(String content, String logoPath, String destPath, boolean needCompress) throws Exception {
        BufferedImage image = QRCodeUtil.createImage(content, logoPath, needCompress);
        mkdirs(destPath);
        String fileName = new Random().nextInt(99999999) + "." + FORMAT.toLowerCase();
        ImageIO.write(image, FORMAT, new File(destPath + "/" + fileName));
        return fileName;
    }

    /**
     *      (  LOGO)
     *         
     *
     * @param content        
     * @param logoPath     LOGO  
     * @param destPath         
     * @param fileName           
     * @param needCompress     LOGO
     * @throws Exception
     */
    public static String encode(String content, String logoPath, String destPath, String fileName, boolean needCompress) throws Exception {
        BufferedImage image = QRCodeUtil.createImage(content, logoPath, needCompress);
        mkdirs(destPath);
        fileName = fileName.substring(0, fileName.indexOf(".") > 0 ? fileName.indexOf(".") : fileName.length())
                + "." + FORMAT.toLowerCase();
        ImageIO.write(image, FORMAT, new File(destPath + "/" + fileName));
        return fileName;
    }

    /**
     *         ，mkdirs         ，   mkdir．
     * (mkdir              )
     *
     * @param destPath     
     */
    public static void mkdirs(String destPath) {
        File file = new File(destPath);
        if (!file.exists() && !file.isDirectory()) {
            file.mkdirs();
        }
    }

    /**
     *      (  LOGO)
     *
     * @param content    
     * @param logoPath LOGO  
     * @param destPath     
     * @throws Exception
     */
    public static String encode(String content, String logoPath, String destPath) throws Exception {
        return QRCodeUtil.encode(content, logoPath, destPath, false);
    }

    /**
     *      
     *
     * @param content        
     * @param destPath         
     * @param needCompress     LOGO
     * @throws Exception
     */
    public static String encode(String content, String destPath, boolean needCompress) throws Exception {
        return QRCodeUtil.encode(content, null, destPath, needCompress);
    }

    /**
     *      
     *
     * @param content    
     * @param destPath     
     * @throws Exception
     */
    public static String encode(String content, String destPath) throws Exception {
        return QRCodeUtil.encode(content, null, destPath, false);
    }

    /**
     *      (  LOGO)
     *
     * @param content        
     * @param logoPath     LOGO  
     * @param output          
     * @param needCompress     LOGO
     * @throws Exception
     */
    public static void encode(String content, String logoPath, OutputStream output, boolean needCompress) throws Exception {
        BufferedImage image = QRCodeUtil.createImage(content, logoPath, needCompress);
        ImageIO.write(image, FORMAT, output);
    }

    /**
     *      
     *
     * @param content   
     * @param output     
     * @throws Exception
     */
    public static void encode(String content, OutputStream output) throws Exception {
        QRCodeUtil.encode(content, null, output, false);
    }


    /**
     *                
     * @param content                   
     * @param logoPath             logo  
     * @param destPath                    
     * @param fileName                  
     * @param effectiveTimes             （            ，            ）
     * @param effectiveSecond          (   )
     */
    public static void encode(String content,String logoPath,String destPath,String fileName ,Integer effectiveTimes,Integer effectiveSecond) throws Exception{
        //                  
        if(null == effectiveTimes){
            //        ：100 
            effectiveTimes = 100 ;
        }
        if(null == effectiveSecond){
            //        ：24H
            effectiveSecond = 24*60*60 ;
        }
        String  redisKey = "QR"+NumberUtil.genOutCaseNum() ;
        RedisUtil.hset(redisKey,redisKey,effectiveTimes.toString(),effectiveSecond);
        //todo http://forzh.xiaomy.net          
        //       
        String qrUrl = "http://forzh.xiaomy.net"+"/qrCode/checkQRCode?"+"key="+redisKey+"&content="+content;
        //     
        encode(qrUrl, logoPath, destPath, fileName, true);
    }


    /**
     *                
     * @param content                   
     * @param effectiveTimes             （            ，            ）
     * @param effectiveSecond          (   )
     */
    public static byte[] encode(String content,Integer effectiveTimes,Integer effectiveSecond){
        //                  
        if(null == effectiveTimes){
            //        ：100 
            effectiveTimes = 100 ;
        }
        if(null == effectiveSecond){
            //        ：24H
            effectiveSecond = 24*60*60 ;
        }
        String  redisKey = "QR"+NumberUtil.genOutCaseNum() ;
        RedisUtil.hset(redisKey,redisKey,effectiveTimes.toString(),effectiveSecond);
        //todo http://forzh.xiaomy.net          
        //       
        String qrUrl = "http://forzh.xiaomy.net/qrCode/checkQRCode?"+"key="+redisKey+"&content="+content;
        return  QrCodeUtil.generatePng(qrUrl, new QrConfig());
    }






    /**
     *      
     *
     * @param file      
     * @return
     * @throws Exception
     */
    public static String decode(File file) throws Exception {
        BufferedImage image;
        image = ImageIO.read(file);
        if (image == null) {
            return null;
        }
        BufferedImageLuminanceSource source = new BufferedImageLuminanceSource(image);
        BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
        Result result;
        Hashtable hints = new Hashtable();
        hints.put(DecodeHintType.CHARACTER_SET, CHARSET);
        result = new MultiFormatReader().decode(bitmap, hints);
        String resultStr = result.getText();
        return resultStr;
    }

    /**
     *      
     *
     * @param path         （    ，     ）
     * @return
     * @throws Exception
     */
    public static String decode(String path) throws Exception {
        return QRCodeUtil.decode(new File(path));
    }

    public static void main(String[] args) throws Exception {
        String text = "https://www.baidu.com";
        // Logo，        
        QRCodeUtil.encode(text, "C:\\Users\\gc\\Desktop\\  .jpg", "e:\\", "     ", null,null);

    }


}