java Zing生成验证码


package yanzm;

import java.awt.image.BufferedImage;  
import java.io.File;  
import java.io.IOException;  
import java.nio.file.FileSystems;  
import java.nio.file.Path;  
import java.util.HashMap;  
import java.util.Map;  
import javax.imageio.ImageIO;  
import org.junit.Test;  
import com.alibaba.fastjson.JSONObject;  
import com.google.zxing.BarcodeFormat;  
import com.google.zxing.Binarizer;  
import com.google.zxing.BinaryBitmap;  
import com.google.zxing.DecodeHintType;  
import com.google.zxing.EncodeHintType;  
import com.google.zxing.LuminanceSource;  
import com.google.zxing.MultiFormatReader;  
import com.google.zxing.MultiFormatWriter;  
import com.google.zxing.NotFoundException;  
import com.google.zxing.Result;  
import com.google.zxing.WriterException;  
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;  
import com.google.zxing.client.j2se.MatrixToImageWriter;  
import com.google.zxing.common.BitMatrix;  
import com.google.zxing.common.HybridBinarizer;
public class yzm {
    public static void main(String[] args)throws WriterException, IOException {
        testEncode();
    }
 
    /**
     * 生成图像
     *  
     * @throws WriterException
     * @throws IOException
     */   
    public static void testEncode() throws WriterException, IOException {  
        String filePath = "D://";  
        String fileName = "zxing.png";  
        JSONObject json = new JSONObject();  
        json.put(  "zxing","https://github.com/zxing/zxing/tree/zxing-3.0.0/javase/src/main/java/com/google/zxing");  
        json.put("author", "shihy");  
        String content = json.toJSONString();// 内容  
        int width = 200; // 图像宽度  
        int height = 200; // 图像高度  
        String format = "png";// 图像类型  
        Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();  
        hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");  
        BitMatrix bitMatrix = new MultiFormatWriter().encode(content,  
                BarcodeFormat.QR_CODE, width, height, hints);// 生成矩阵  
        Path path = FileSystems.getDefault().getPath(filePath, fileName);  
        MatrixToImageWriter.writeToPath(bitMatrix, format, path);// 输出图像  
        System.out.println("输出成功.");  
    }  
 
    /**
     * 解析图像
     */  
    public void testDecode() {  
        String filePath = "D://zxing.png";  
        BufferedImage image;  
        try {  
            image = ImageIO.read(new File(filePath));  
            LuminanceSource source = new BufferedImageLuminanceSource(image);  
            Binarizer binarizer = new HybridBinarizer(source);  
            BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);  
            Map<DecodeHintType, Object> hints = new HashMap<DecodeHintType, Object>();  
            hints.put(DecodeHintType.CHARACTER_SET, "UTF-8");  
            Result result = new MultiFormatReader().decode(binaryBitmap, hints);// 对图像进行解码  
            JSONObject content = JSONObject.parseObject(result.getText());  
            System.out.println("图片中内容：  ");  
            System.out.println("author： " + content.getString("author"));  
            System.out.println("zxing：  " + content.getString("zxing"));  
            System.out.println("图片中格式：  ");  
            System.out.println("encode： " + result.getBarcodeFormat());  
        } catch (IOException e) {  
            e.printStackTrace();  
        } catch (NotFoundException e) {  
            e.printStackTrace();  
        }  
    }  
}

--------------------------------------------------------二  带logo地址：http://blog.csdn.net/wangnan537/article/details/50353174---------------------------------------------------------------------------

package yanzm;
    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.client.j2se.BufferedImageLuminanceSource;  
    import com.google.zxing.common.BitMatrix;  
    import com.google.zxing.common.HybridBinarizer;  
    import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;  
      
    /**
     * 二维码工具类
     *  
     */  
    public class QRCodeUtil {  
        private static final String CHARSET = "utf-8";  
        private static final String FORMAT = "JPG";  
        // 二维码尺寸  
        private static final int QRCODE_SIZE = 300;  
        // LOGO宽度  
        private static final int LOGO_WIDTH = 60;  
        // LOGO高度  
        private static final int LOGO_HEIGHT = 60;  
      
        private static BufferedImage createImage(String content, String logoPath, 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 (logoPath == null || "".equals(logoPath)) {  
                return image;  
            }  
            // 插入图片  
            QRCodeUtil.insertImage(image, logoPath, needCompress);  
            return image;  
        }  
      
        /**
         * 插入LOGO
         *  
         * @param source
         *            二维码图片
         * @param logoPath
         *            LOGO图片地址
         * @param needCompress
         *            是否压缩
         * @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);  
            if (needCompress) { // 压缩LOGO  
                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); // 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)
         * 二维码文件名随机，文件名可能会有重复
         *  
         * @param content
         *            内容
         * @param logoPath
         *            LOGO地址
         * @param destPath
         *            存放目录
         * @param needCompress
         *            是否压缩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;  
        }  
          
        /**
         * 生成二维码(内嵌LOGO)
         * 调用者指定二维码文件名
         *  
         * @param content
         *            内容
         * @param logoPath
         *            LOGO地址
         * @param destPath
         *            存放目录
         * @param fileName
         *            二维码文件名
         * @param needCompress
         *            是否压缩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;  
        }  
      
        /**
         * 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)
         * @param destPath
         *            存放目录
         */  
        public static void mkdirs(String destPath) {  
            File file = new File(destPath);  
            if (!file.exists() && !file.isDirectory()) {  
                file.mkdirs();  
            }  
        }  
      
        /**
         * 生成二维码(内嵌LOGO)
         *  
         * @param content
         *            内容
         * @param logoPath
         *            LOGO地址
         * @param destPath
         *            存储地址
         * @throws Exception
         */  
        public static String encode(String content, String logoPath, String destPath) throws Exception {  
            return QRCodeUtil.encode(content, logoPath, 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 String encode(String content, String destPath, boolean needCompress) throws Exception {  
            return 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 String encode(String content, String destPath) throws Exception {  
            return QRCodeUtil.encode(content, null, destPath, false);  
        }  
      
        /**
         * 生成二维码(内嵌LOGO)
         *  
         * @param content
         *            内容
         * @param logoPath
         *            LOGO地址
         * @param output
         *            输出流
         * @param needCompress
         *            是否压缩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);  
        }  
      
        /**
         * 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.baidu.com";  
            //不含Logo  
            //QRCodeUtil.encode(text, null, "e:\\", true);  
            //含Logo，不指定二维码图片名  
            //QRCodeUtil.encode(text, "e:\\csdn.jpg", "e:\\", true);  
            //含Logo，指定二维码图片名  
            QRCodeUtil.encode(text, "e:\\csdn.jpg", "e:\\", "qrcode", true);  
        }  
    }

时间： 2024-08-12 17:16:17

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