java使用zxing生成带logo，文字说明二维码

二维码生成解析帮助类

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.IOException;  import java.io.OutputStream;  import java.util.Hashtable;  import java.util.UUID;  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;  /**   * 二维码 生成、解析器 帮助类     *   */    public class QRCodeUtil {         private static final String CHARSET = "utf-8";            private static final String FORMAT_NAME = "png";            // 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;            /**           *  检查路径 图片是否存在           * @param imgPath           * @return           * @throws IOException           */            private static BufferedImage CheckImageExist(String imgPath) throws IOException{                File file = new File(imgPath);                if (!file.exists()) {                    System.err.println(""+imgPath+"   该文件不存在！");                    return null;                }                BufferedImage src = ImageIO.read(new File(imgPath));                return src;            }            /**           * 创建 二维码所需图片            * @param content   内容           * @param imgPath   Logo图片地址           * @param needCompress 是否压缩Logo大小          * @param needDescription 是否需要底部描述           * @return             * @throws Exception           */            private static BufferedImage createImage(String content,BufferedImage logoImage, String bottomDes,                  boolean needCompress) throws Exception {                Hashtable hints = new Hashtable();                hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H); //容错级别 H->30%                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();               int tempHeight = height;              boolean needDescription=(null==bottomDes&&"".equals(bottomDes));              if (needDescription) {                  tempHeight += 30;              }               BufferedImage image = new BufferedImage(width, tempHeight,                        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(null==logoImage)                     return image;                // 插入图片                QRCodeUtil.insertImage(image, logoImage, needCompress);              if(needDescription)                   return image;              QRCodeUtil.addFontImage(image, bottomDes);              return image;            }            /**          * 添加 底部图片文字          * @param source   图片源          * @param declareText 文字本文          */          private static void addFontImage(BufferedImage source, String declareText) {              BufferedImage textImage = FontImage.getImage(declareText, QRCODE_SIZE, 50);              Graphics2D graph = source.createGraphics();              int width = textImage.getWidth(null);                int height = textImage.getHeight(null);                Image src =textImage;                graph.drawImage(src, 0, QRCODE_SIZE - 20, width, height, null);                 graph.dispose();            }          /**           *  插入Logo图片           * @param source    图片操作对象           * @param imgPath   Logo图片地址           * @param needCompress 是否压缩Logo大小           * @throws Exception           */            private static void insertImage(BufferedImage source,BufferedImage logoImage,                    boolean needCompress) throws Exception {                int width = logoImage.getWidth(null);                int height = logoImage.getHeight(null);                Image src =logoImage;                if (needCompress) {                   if (width > WIDTH) {                        width = WIDTH;                    }                    if (height > HEIGHT) {                        height = HEIGHT;                    }                    Image  image = logoImage.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;                }                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();            }            /**           * 创建 目录           * @param destPath           */            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 (以Logo路径)           * @param content  内容 (若带http:// 会自动跳转)           * @param imgPath  Logo 图片地址           * @param destPath   保存二维码 地址 (没有该目录会自动创建)           * @param bottomDes 底部文字描述          * @param needCompress 是否压缩Logo大小           * @throws Exception           */            public static void encodeOfPath(String content, String imgPath,String bottomDes,String destPath,                    boolean needCompress) throws Exception {                BufferedImage image = QRCodeUtil.createImage(content, CheckImageExist(imgPath),                        bottomDes,needCompress);                mkdirs(destPath);                String file = UUID.randomUUID().toString()+".png";                ImageIO.write(image, FORMAT_NAME, new File(destPath+"/"+file));            }            /**          *           * @param content 内容              * @param logoImage  图片源 LOGO          * @param bottomDes 底部描述文字          * @param destPath   保存二维码 地址 (没有该目录会自动创建)          * @param needCompress  是否压缩logo          * @throws Exception          */          public static void encode(String content, BufferedImage logoImage,String bottomDes, String destPath,                    boolean needCompress) throws Exception {                BufferedImage image = QRCodeUtil.createImage(content, logoImage, bottomDes,                       needCompress);                mkdirs(destPath);                String file = UUID.randomUUID().toString()+".png";                ImageIO.write(image, FORMAT_NAME, new File(destPath+"/"+file));            }            /**          *           * @param content  内容              * @param logoImage  图片源LOGO          * @param bottomDes 底部描述文字          * @param picName   图片名          * @param destPath     保存二维码 地址 (没有该目录会自动创建)          * @param needCompress 是否压缩logo          * @throws Exception          */          public static void encode(String content, BufferedImage logoImage,String bottomDes,String picName,String destPath,                    boolean needCompress) throws Exception {                        BufferedImage image=QRCodeUtil.createImage(content, logoImage,bottomDes,                           needCompress);                mkdirs(destPath);                String file = picName+".png";                ImageIO.write(image, FORMAT_NAME, new File(destPath+"/"+file));            }           /**          *           * @param content  内容          * @param destPath     保存二维码 地址 (没有该目录会自动创建)          * @throws Exception          */          public static void encode(String content, String destPath) throws Exception {                QRCodeUtil.encode(content, null,null,destPath, false);            }            /**          *             * @param content   内容          * @param imgPath    图片源地址LOGO          * @param bottomDes 底部描述文字          * @param output    输出流          * @param needCompress 是否压缩logo          * @throws Exception          */          public static void encodeOfPath(String content, String imgPath,String bottomDes,                    OutputStream output, boolean needCompress) throws Exception {                BufferedImage image = QRCodeUtil.createImage(content, CheckImageExist(imgPath), bottomDes,                       needCompress);                ImageIO.write(image, FORMAT_NAME, output);            }            /**          *           * @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,null, output, false);            }            /**           * 解析 二维码           * @param file 图片文件           * @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;            }            /**           *  解析二维码           * @param path 图片地址           * @return           * @throws Exception           */           public static String decode(String path) throws Exception {                return QRCodeUtil.decode(new File(path));            }                            }

测试生成

public static void main(String[] args) throws Exception {        String text = "http://www.baidu.com";        QRCodeUtil.encodeOfPath(text, "d:/test/a1.png",null,"d:/test", true);        QRCodeUtil.encode(text,"d:/test"); // 不带logo       BufferedImage bi = ImageIO.read(new File("d:/test/a1.png"));      QRCodeUtil.encode(text,bi,"ok","123","d:/test", true);  }   

注:本文转自yuki，点击跳转