生成二维码跳转页面（转）

以你之姓@ 2022-12-11 11:27 134阅读 0赞

### 生成二维码跳转页面（转） ###

用的google二维码包写的  
原文链接：https://www.iteye.com/blog/suko-2244138

原文没有配maven，这里给一份

<dependency>
                <groupId>com.google.zxing</groupId>
                <artifactId>core</artifactId>
                <version>3.3.0</version>
            </dependency>
            <dependency>
                <groupId>com.google.zxing</groupId>
                <artifactId>javase</artifactId>
                <version>3.0.0</version>
            </dependency>

代码

package test;  
      
    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;  
      
    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;  
        
        private static BufferedImage createImage(String content, String imgPath,    
                boolean needCompress) throws Exception {     
            Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();    
            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;    
        }    
        
        /** * 插入LOGO * * @param source * 二维码图片 * @param imgPath * LOGO图片地址 * @param needCompress * 是否压缩 * @throws Exception */    
        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();    
        }    
        
        /** * 生成二维码(内嵌LOGO) * * @param content * 内容 * @param imgPath * LOGO地址 * @param destPath * 存放目录 * @param needCompress * 是否压缩LOGO * @throws Exception */    
        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));    
        }    
        
        /** * 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) * @author lanyuan * Email: mmm333zzz520@163.com * @date 2013-12-11 上午10:16:36 * @param destPath 存放目录 */    
        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();    
            }    
        }    
        
        /** * 生成二维码(内嵌LOGO) * * @param content * 内容 * @param imgPath * LOGO地址 * @param destPath * 存储地址 * @throws Exception */    
        public static void encode(String content, String imgPath, String destPath)    
                throws Exception {     
            QRCodeUtil.encode(content, imgPath, destPath, false);    
        }    
        
        /** * 生成二维码 * * @param content * 内容 * @param destPath * 存储地址 * @param needCompress * 是否压缩LOGO * @throws Exception */    
        public static void encode(String content, String destPath,    
                boolean needCompress) throws Exception {     
            QRCodeUtil.encode(content, null, destPath, needCompress);    
        }    
        
        /** * 生成二维码 * * @param content * 内容 * @param destPath * 存储地址 * @throws Exception */    
        public static void encode(String content, String destPath) throws Exception {     
            QRCodeUtil.encode(content, null, destPath, false);    
        }    
        
        /** * 生成二维码(内嵌LOGO) * * @param content * 内容 * @param imgPath * LOGO地址 * @param output * 输出流 * @param needCompress * 是否压缩LOGO * @throws Exception */    
        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);    
        }    
        
        /** * 生成二维码 * * @param content * 内容 * @param output * 输出流 * @throws Exception */    
        public static void encode(String content, OutputStream output)    
                throws Exception {     
            QRCodeUtil.encode(content, null, output, false);    
        }    
        
        /** * 解析二维码 * * @param file * 二维码图片 * @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<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>();    
            hints.put(DecodeHintType.CHARACTER_SET, CHARSET);    
            result = new MultiFormatReader().decode(bitmap, hints);    
            String resultStr = result.getText();    
            return resultStr;    
        }    
        
        /** * 解析二维码 * * @param path * 二维码图片地址 * @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 = "http://www.iteye.com";  //这里设置自定义网站url 
            String logoPath = "d:\\zilv.jpg";   
            String destPath = "d:\\";   
            QRCodeUtil.encode(text, logoPath, destPath, true);    
        }  
    }