java二維碼工具類，中間帶ＬＯＧＯ的，很強大

jar包下載maven 配置： Xml代碼收藏代碼 <dependency> <groupId>com.google.zxing</groupId> <artifactId>core</artifactId> <version>3.2.1</version> </dependency> Java代
jar包下載maven 配置：
Xml代碼  收藏代碼
<dependency>  
    <groupId>com.google.zxing</groupId>  
    <artifactId>core</artifactId>  
    <version>3.2.1</version>  
</dependency>  
   
 
Java代碼  收藏代碼
package com.util.cccm;  
  
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;  
  
/** 
 * 二維碼工具類 
 *  
 */  
public class QRCodeUtil {  
  
    private static final String CHARSET = "utf-8";  
    private static final String FORMAT_NAME = "JPG";  
    // 二維碼尺寸  
    private static final int QRCODE_SIZE = 300;  
    // LOGO寬度  
    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;  
        }  
        // 插入圖片  
        QRCodeUtil.insertImage(image, imgPath, needCompress);  
        return image;  
    }  
  
    /** 
     * 插入LOGO 
     *  
     * @param source 
     *            二維碼圖片 
     * @param imgPath 
     *            LOGO圖片地址 
     * @param needCompress 
     *            是否壓縮 
     * @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+"   該文件不存在！");  
            return;  
        }  
        Image src = ImageIO.read(new File(imgPath));  
        int width = src.getWidth(null);  
        int height = src.getHeight(null);  
        if (needCompress) { // 壓縮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); // 繪製縮小後的圖  
            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();  
    }  
  
    /** 
     * 生成二維碼(內嵌LOGO) 
     *  
     * @param content 
     *            內容 
     * @param imgPath 
     *            LOGO地址 
     * @param destPath 
     *            存放目錄 
     * @param needCompress 
     *            是否壓縮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));  
    }  
  
    /** 
     * 當文件夾不存在時，mkdirs會自動創建多層目錄，區別於mkdir．(mkdir如果父目錄不存在則會拋出異常) 
     * @author lanyuan 
     * Email: [email protected] 
     * @date 2013-12-11 上午10:16:36 
     * @param destPath 存放目錄 
     */  
    public static void mkdirs(String destPath) {  
        File file =new File(destPath);      
        //當文件夾不存在時，mkdirs會自動創建多層目錄，區別於mkdir．(mkdir如果父目錄不存在則會拋出異常)  
        if (!file.exists() && !file.isDirectory()) {  
            file.mkdirs();  
        }  
    }  
  
    /** 
     * 生成二維碼(內嵌LOGO) 
     *  
     * @param content 
     *            內容 
     * @param imgPath 
     *            LOGO地址 
     * @param destPath 
     *            存儲地址 
     * @throws Exception 
     */  
    public static void encode(String content, String imgPath, String destPath)  
            throws Exception {  
        QRCodeUtil.encode(content, imgPath, destPath, false);  
    }  
  
    /** 
     * 生成二維碼 
     *  
     * @param content 
     *            內容 
     * @param destPath 
     *            存儲地址 
     * @param needCompress 
     *            是否壓縮LOGO 
     * @throws Exception 
     */  
    public static void encode(String content, String destPath,  
            boolean needCompress) throws Exception {  
        QRCodeUtil.encode(content, null, destPath, needCompress);  
    }  
  
    /** 
     * 生成二維碼 
     *  
     * @param content 
     *            內容 
     * @param destPath 
     *            存儲地址 
     * @throws Exception 
     */  
    public static void encode(String content, String destPath) throws Exception {  
        QRCodeUtil.encode(content, null, destPath, false);  
    }  
  
    /** 
     * 生成二維碼(內嵌LOGO) 
     *  
     * @param content 
     *            內容 
     * @param imgPath 
     *            LOGO地址 
     * @param output 
     *            輸出流 
     * @param needCompress 
     *            是否壓縮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);  
    }  
  
    /** 
     * 生成二維碼 
     *  
     * @param content 
     *            內容 
     * @param output 
     *            輸出流 
     * @throws Exception 
     */  
    public static void encode(String content, OutputStream output)  
            throws Exception {  
        QRCodeUtil.encode(content, null, output, false);  
    }  
  
    /** 
     * 解析二維碼 
     *  
     * @param file 
     *            二維碼圖片 
     * @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;  
    }  
  
    /** 
     * 解析二維碼 
     *  
     * @param path 
     *            二維碼圖片地址 
     * @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 = "薯　燈可分列式本上楞珂要瓜熟蒂落！000000000000000";  
        QRCodeUtil.encode(text, "c:/df.jsp", "c:/a/", true);  
    }  
}
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