LuminanceSource二维码生产

Posted 2022-12-14 CuratorCrision

package com.yntravlesky.qrcode;


import java.awt.Graphics2D;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;


import com.google.zxing.LuminanceSource;


/**
 * @author :zhqb
 * @date :2016年8月3日 下午2:05:26
 */


public class BufferedImageLuminanceSource extends LuminanceSource


private final BufferedImage image;
private final int left;
private final int top;


protected BufferedImageLuminanceSource(BufferedImage image)
this(image, 0, 0, image.getWidth(), image.getHeight());



public BufferedImageLuminanceSource(BufferedImage image, int left, int top,int width, int height)
super(width, height);
int sourceWidth = image.getWidth();
int sourceHeight = image.getHeight();
if (left + width > sourceWidth || top + height > sourceHeight)
throw new IllegalArgumentException(
"Crop rectangle does not fit within image data.");



for (int y = top; y < top + height; y++)
for (int x = left; x < left + width; x++)
if ((image.getRGB(x, y) & 0xFF000000) == 0)
image.setRGB(x, y, 0xFFFFFFFF); // = white





this.image = new BufferedImage(sourceWidth, sourceHeight,BufferedImage.TYPE_BYTE_GRAY);
this.image.getGraphics().drawImage(image, 0, 0, null);
this.left = left;
this.top = top;



@Override
public byte[] getMatrix()
int width = getWidth();
int height = getHeight();
int area = width * height;
byte[] matrix = new byte[area];
image.getRaster().getDataElements(left, top, width, height, matrix);
return matrix;



@Override
public byte[] getRow(int y, byte[] row)
if (y < 0 || y >= getHeight())
throw new IllegalArgumentException(
"Requested row is outside the image: " + y);

int width = getWidth();
if (row == null || row.length < width)
row = new byte[width];

image.getRaster().getDataElements(left, top + y, width, 1, row);
return row;



public boolean isCropSupported()
return true;



public LuminanceSource crop(int left, int top, int width, int height)
return new BufferedImageLuminanceSource(image, this.left + left,
this.top + top, width, height);



public boolean isRotateSupported()
return true;



public LuminanceSource rotateCounterClockwise()
int sourceWidth = image.getWidth();
int sourceHeight = image.getHeight();
AffineTransform transform = new AffineTransform(0.0, -1.0, 1.0, 0.0,0.0, sourceWidth);
BufferedImage rotatedImage = new BufferedImage(sourceHeight,sourceWidth, BufferedImage.TYPE_BYTE_GRAY);
Graphics2D g = rotatedImage.createGraphics();
g.drawImage(image, transform, null);
g.dispose();
int width = getWidth();
return new BufferedImageLuminanceSource(rotatedImage, top, sourceWidth - (left + width), getHeight(), width);

package com.yntravlesky.qrcode;


import java.awt.BasicStroke;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Shape;
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;


import javax.imageio.ImageIO;


import com.google.zxing.BarcodeFormat;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.DecodeHintType;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.Result;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;


/** 
 * @author :zhqb
 * @date :2016年8月3日 下午2:05:41 
 */


public class QRCodeUtil


    private static final String CHARSET = "utf-8";
    private static final String FORMAT_NAME = "JPG";
    // 二维码尺寸
    private static final int QRCODE_SIZE = 300;
    // LOGO宽度
    private static final int WIDTH = 60;
    // LOGO高度
    private static final int HEIGHT = 60;


    @SuppressWarnings( "unchecked", "rawtypes" )
private static BufferedImage createImage(String content, String imgPath,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 (imgPath == null || "".equals(imgPath))
            return image;
       
        // 插入图片
        QRCodeUtil.insertImage(image, imgPath, needCompress);
        return image;
   


   
    private static void insertImage(BufferedImage source, String imgPath,
            boolean needCompress) throws Exception
        File file = new File(imgPath);
        if (!file.exists())
            System.err.println(""+imgPath+"   该文件不存在！");
            return;
       
        Image src = ImageIO.read(new File(imgPath));
        int width = src.getWidth(null);
        int height = src.getHeight(null);
        if (needCompress) // 压缩LOGO
            if (width > WIDTH)
                width = WIDTH;
           
            if (height > HEIGHT)
                height = 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); // 绘制缩小后的图
            g.dispose();
            src = image;
       
        // 插入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();
   


   
    public static void encode(String content, String imgPath, String destPath,boolean needCompress) throws Exception
        BufferedImage image = QRCodeUtil.createImage(content, imgPath,needCompress);
        mkdirs(destPath);
        String file = new Random().nextInt(99999999)+".jpg";
        ImageIO.write(image, FORMAT_NAME, new File(destPath+"/"+file));
   


   
    public static void mkdirs(String destPath)
        File file =new File(destPath);   
        //当文件夹不存在时，mkdirs会自动创建多层目录，区别于mkdir．(mkdir如果父目录不存在则会抛出异常)
        if (!file.exists() && !file.isDirectory())
            file.mkdirs();
       
   


   
    public static void encode(String content, String imgPath, String destPath)
            throws Exception
        QRCodeUtil.encode(content, imgPath, destPath, false);
   


   
    public static void encode(String content, String destPath,
            boolean needCompress) throws Exception
        QRCodeUtil.encode(content, null, destPath, needCompress);
   


   
    public static void encode(String content, String destPath) throws Exception
        QRCodeUtil.encode(content, null, destPath, false);
   


   
    public static void encode(String content, String imgPath,
            OutputStream output, boolean needCompress) throws Exception
        BufferedImage image = QRCodeUtil.createImage(content, imgPath,
                needCompress);
        ImageIO.write(image, FORMAT_NAME, output);
   


   
    public static void encode(String content, OutputStream output)
            throws Exception
        QRCodeUtil.encode(content, null, output, false);
   


   
    @SuppressWarnings( "rawtypes", "unchecked" )
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;
   


   
    public static String decode(String path) throws Exception
        return QRCodeUtil.decode(new File(path));
   
   
   
    public static void main(String[] args) throws Exception
        String text = "http://bbs.csdn.net/home";
        QRCodeUtil.encode(text, "E:/MyWorkDoc/cnds.jpg", "E:/MyWorkDoc/", true);