二維碼生成：

引用的包：
        <dependency>
            <groupId>com.google.zxing</groupId>
            <artifactId>core</artifactId>
            <version>2.2</version>
        </dependency>
        <dependency>
            <groupId>com.google.zxing</groupId>
            <artifactId>javase</artifactId>
            <version>2.2</version>
        </dependency>
 

生成程式碼：
    /**
     * 
    * @Title: createQrCodeByStringName
    * @param @param path 生成二維碼路徑
    * @param @param name  二維碼名稱
    * @param @param content 二維碼儲存的資訊
    * @param @param qrCodeSize  二維碼長度和寬度
    * @param @param imageFormat 圖片型別
    * @param @throws WriterException
    * @param @throws IOException    設定檔案
    * @return void    返回型別
    * @throws
     */
    public static void createQrCodeByStringName(String path,String name, String content, int qrCodeSize, String imageFormat) throws WriterException, IOException{  
        FileOutputStream outputStream = new FileOutputStream(new File(path+name));
    	Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();  
        hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");  
        BitMatrix bitMatrix = new MultiFormatWriter().encode(content,  
                BarcodeFormat.QR_CODE, qrCodeSize, qrCodeSize, hints);// 生成矩陣  
        MatrixToImageWriter.writeToStream(bitMatrix, imageFormat, outputStream);// 輸出影象  
        System.out.println("二維碼生成成功.");   
    } 

 

二維碼解析：
    /**
     * 讀二維碼並輸出攜帶的資訊
     */
    public static void readQrCode(FileInputStream inputStream) throws IOException{  
        BufferedImage image;  
        try {  
            image = ImageIO.read(inputStream);  
            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);// 對影象進行解碼  
            System.out.println("二維碼掃描結果："+result.getText());
        } catch (IOException e) {  
            e.printStackTrace();  
        } catch (NotFoundException e) {  
            e.printStackTrace();  
        }   
    }
 

測試程式碼：
    /**
     * 測試程式碼
     * @throws WriterException 
     * @throws ParseException 
     */
    public static void main(String[] args) throws IOException, WriterException, ParseException { 
createQrCodeByStringName("d:\\","www.jpg","哈哈哈哈",500,"JPEG");
 readQrCode(new FileInputStream(new File("d:\\www.jpg")));  
    }