base64转字符串

    /**
	 * 本地图片转换Base64的方法
	 * 
	 * @param imgPath
	 * @return
	 */
	public static String ImageToBase64(String imgPath) {
		byte[] data = null;
		// 读取图片字节数组
		try {
			InputStream in = new FileInputStream(imgPath);
			data = new byte[in.available()];
			in.read(data);
			in.close();
		} catch (IOException e) {
			e.printStackTrace();
			log.error("图片读取失败");
			return null;
		}
		String baseStr = Base64.getEncoder().encodeToString(data);
		log.info("base64字符串为:" + baseStr);
		return baseStr;
	}