<span style="font-size:18px;">普通二維碼生成</span>

<span style="font-size:18px;">public class ZxingEncoderUtil {

	/**
	 * 生成二維碼
	 * @param filePath       文字檔案路徑(文字需以UTF-8)
	 * @param imgFormate     指定生成的二維碼圖片的字尾名
	 * @param width          指定生成的二維碼圖片的寬度
	 * @param height		   指定生成的二維碼圖片的高度
	 */
    public void createTwoDimensionalCode(String filePath, String imgFormate, int width, int height) {
    	File file = new File(filePath);
    	StringBuffer contents = new StringBuffer("");
    	//讀取文字檔案內容到 contents
		try {
			InputStream is = new FileInputStream(file);
			InputStreamReader isr = new InputStreamReader(is);
			BufferedReader br = new BufferedReader(isr);
			try {
				String temp = br.readLine();
				while(temp != null) {
					contents.append(temp+"\r\n");
					temp = br.readLine();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		}
		//得到圖片該存放路徑
		String imgPath = file.getParent();
		//得到檔案該設定的名字
		String imgName = file.getName();
		int endIndex = imgName.lastIndexOf(".");
		imgName = imgName.substring(0, endIndex);
		
		File imageFile = new File(imgPath, imgName+"."+imgFormate);
		Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
        // 指定糾錯等級
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
        // 指定編碼格式
        hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
        try {
            BitMatrix bitMatrix = new MultiFormatWriter().encode(contents.toString(),BarcodeFormat.QR_CODE, width, height, hints);
            MatrixToImageWriter.writeToPath(bitMatrix, imgFormate, imageFile.toPath());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    /**
     * @param args
     */
    public static void main(String[] args) {
    	
    	String filePath = args[0];   //文字檔案路徑(文字需以UTF-8)
    	String imgFormate = args[1];  //指定生成的二維碼圖片的字尾名
    	int width = Integer.parseInt(args[2]); //指定生成的二維碼圖片的寬度
    	int height = Integer.parseInt(args[3]); //指定生成的二維碼圖片的高度
    	new ZxingEncoderUtil().createTwoDimensionalCode(filePath, imgFormate, width, height);
    }
}</span>
 

帶logo二維碼

<span style="font-size:18px;">public class CreatQRCodeImg {

	private static final int BLACK = 0xFF000000;
	private static final int WHITE = 0xFFFFFFFF; 
	
	/**
	 *  最終呼叫該方法生成二維碼圖片
	 * @param url 要生成二維碼的url
	 * @param imgPath 二維碼生成的絕對路徑
	 * @param logoPath 二維碼中間logo絕對地址
	 * @throws Exception
	 */
	public static void get2CodeImage(String url,String imgPath,String logoPath) throws Exception{
		String format = "png";
		Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>(); 
		hints.put(EncodeHintType.CHARACTER_SET, "utf-8");  
		BitMatrix bitMatrix = new MultiFormatWriter().encode(url, BarcodeFormat.QR_CODE, 300, 300, hints);
		File qrcodeFile = new File(imgPath);  
		CreatQRCodeImg.writeToFile(bitMatrix, format, qrcodeFile, logoPath);  
	}
	
	/**
	 * 
	 * @param matrix 二維碼矩陣相關
	 * @param format 二維碼圖片格式
	 * @param file 二維碼圖片檔案
	 * @param logoPath logo路徑
	 * @throws IOException
	 */
	public static void writeToFile(BitMatrix matrix,String format,File file,String logoPath) throws IOException {
		BufferedImage image = toBufferedImage(matrix);
		Graphics2D gs = image.createGraphics();
		
		//載入logo
		Image img = ImageIO.read(new File(logoPath));
		gs.drawImage(img, 125, 125, null);
		gs.dispose();
		img.flush();
		if(!ImageIO.write(image, format, file)){
			throw new IOException("Could not write an image of format " + format + " to " + file);  
		}
	}
	
	public static BufferedImage toBufferedImage(BitMatrix matrix){
		int width = matrix.getWidth();
		int height = matrix.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, matrix.get(x, y) ? BLACK : WHITE);
			}
		}
		return image;	
	}

	
	public static void main(String[] args) {
		try {
			get2CodeImage("www.baidu.com","d:\\test\\logotest\\logocode.jpg","d:\\test\\logotest\\logo.jpg");
		} catch (Exception e) {
			e.printStackTrace();
		} 
	}
}</span>
 

zxing相關jar包下載地址

http://repo1.maven.org/maven2/com/google/zxing/javase/3.1.0/