/**
     * 图片网络地址转为byte[]
     *
     * @param url
     * @return
     * @throws IOException
     */
    public static byte[] imgPathBytes(String url) throws IOException {
        URL urlConet = new URL(url);
        URLConnection con = urlConet.openConnection();
        InputStream in = con.getInputStream();
        byte[] buffer = new byte[4 * 1024];
        int n = 0;
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        while ((n = in.read(buffer)) != -1) {
            out.write(buffer, 0, n);
        }
        byte[] bs = out.toByteArray();
        return bs;
    }