生成Base64编码格式的二维码图片(添加url地址图片logo)

用到是google的zxing

<!-- https://mvnrepository.com/artifact/com.google.zxing/core -->
<dependency>
    <groupId>com.google.zxing</groupId>
    <artifactId>core</artifactId>
    <version>3.3.3</version>
</dependency>

废话不多说，直接上代码吧

/**
 * 生成二维码工具类
 */
public class QRCodeUtil {
	/**
	* @Title: generalQRCode 
	* @Description: 生成二维码并使用Base64编码
	* @param url 要生成的二维码内容
	* @param logoPath logo所在的网络地址
	* @return String 返回的base64格式的图片字符串(png格式)
	* @throws
	 */
	public static String generalQRCode(String url,String logoPath) {
		Hashtable<EncodeHintType, Object> hints = new Hashtable<>();
		hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
		hints.put(EncodeHintType.MARGIN, Constant.QRCODE_MARGIN);  //设置白边
		String binary = null;
		try {
                        //生成二维码矩阵
			BitMatrix bitMatrix = new MultiFormatWriter().encode(url, BarcodeFormat.QR_CODE, 400, 400, hints);
			ByteArrayOutputStream out = new ByteArrayOutputStream();
                        //二维码中画入logo
			BufferedImage image = writeLogoToQrcode(bitMatrix,logoPath);
			//文件转换为字节数组
			ImageIO.write(image, "png", out);
			byte[] bytes = out.toByteArray();
 
			//进行base64编码
			binary = BASE64Encoder.encode(bytes).trim();
 
		} catch (Exception e) {
			e.printStackTrace();
		}
                //返回png格式的base64编码数据 (如果需要其他的，请自行处理)
		return "data:image/png;base64,"+binary;
	}

	  
	/**
	 * 
	* @Title: toBufferedImage 
	* @Description: 二维码矩阵转换为BufferedImage
	* @param matrix
	* @return BufferedImage 返回类型 
	* @throws
	 */
	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++) {
                //Constant.QRCODE_COLOR和Constant.QRCODE_BACKGROUND_COLOR为二维码颜色和背景颜色
				image.setRGB(x, y, matrix.get(x, y) ? Constant.QRCODE_COLOR : Constant.QRCODE_BACKGROUND_COLOR);
			}
		}
		return image;
	}
	/** 
     *  
     * @param matrix 二维码矩阵相关 
     * @param logoPath logo路径 
     * @throws IOException 
     */  
    public static BufferedImage writeLogoToQrcode(BitMatrix matrix,String logoUrl) throws IOException {  
        //二维码矩阵转换为BufferedImage
        BufferedImage image = toBufferedImage(matrix);  
        //是否传入了logo地址
        if(StringUtils.isNotBlank(logoUrl)){
        	URL url = new URL(logoUrl);
            //取得二维码图片的画笔
        	Graphics2D gs = image.createGraphics();  
	        
	        int ratioWidth = image.getWidth()*2/10;
	        int ratioHeight = image.getHeight()*2/10;
	        //读取logo地址
	        Image img = ImageIO.read(url); 
	        int logoWidth = img.getWidth(null)>ratioWidth?ratioWidth:img.getWidth(null);
	        int logoHeight = img.getHeight(null)>ratioHeight?ratioHeight:img.getHeight(null);
	        //设置logo图片的位置
	        int x = (image.getWidth() - logoWidth) / 2; 
	        int y = (image.getHeight() - logoHeight) / 2;
            //开画
	        //gs.drawImage(Image logo, int logo横坐标, int logo纵坐标, int logo宽, int logo高, null);
	        gs.drawImage(img, (int)(x), (int)(y), logoWidth, logoHeight, null); 
	        gs.dispose();  
	        img.flush();  
        }
        return image;
    } 
}

通用配置常量类

/**
 * 
* @ClassName: BMemRewardConstant 
* @Description: 生成base64二维码通用常量类
* @author wujun
* @date 2018年8月10日 上午8:48:15 
*
 */
public class Constant implements Serializable{
	/**
	 * 推荐二维码颜色 0xFF 后的六位为16进制的颜色值#A72325
	 */
	public static final int QRCODE_COLOR = 0xFFA72325;
	/**
	 * 推荐二维码背景颜色
	 */
	public static final int QRCODE_BACKGROUND_COLOR = 0xFFFFFFFF;
	/**
	 * 推荐二维码的白边设置(0-4) 0为无白边
	 */
	public static final int QRCODE_MARGIN = 0;
}

到这里生成二维码就结束了

测试

public class Test {
	@Test
	public void test(){
		String qrcodeWithLogo = QRCodeUtil.generalQRCode("http://www.baidu.com?id=M000001&name=nickname", "http://chuantu.biz/t6/355/1533885835x-1566688556.png");
		String qrcodeWithoutLogo = QRCodeUtil.generalQRCode("http://www.baidu.com?id=M000001&name=nickname", null);
		System.out.println("带有logo的二维码:" + qrcodeWithLogo);
		System.out.println("不带logo的二维码:" + qrcodeWithoutLogo);
	}
}

base64编码串

带有logo的二维码:data:image/png;base64,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

美滋滋

本人也是菜鸟一枚，找了些资料，看到了两位大佬写的一些，整合了一下，原地址我写完给忘掉了，抱歉抱歉!!

生成Base64编码格式的二维码图片(添加url地址图片logo)

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