/**

     * @param imgStr 图片的base64

     * @param path   将要生成的地址

     * @return

     */

    public static boolean generateImage(String imgStr, String path) {

        if (imgStr == null) {

            return false;

        }

        BASE64Decoder decoder = new BASE64Decoder();

        try {

            //解密

            byte[] b = decoder.decodeBuffer(imgStr);

            //处理数据

            for (int i = 0; i < b.length; ++i) {

                if (b[i] < 0) {

                    b[i] += 256;

                }

            }

            OutputStream out = new FileOutputStream(path);

            out.write(b);

            out.flush();

            out.close();

            return true;

        } catch (IOException e) {

            e.printStackTrace();

            return false;

        }

    }