SHA_1计算消息摘要

/**
     * SHA_1计算消息摘要
     * @param bytes 待计算数据
     * @return
     */
    public static String SHA_1(byte[] bytes) {
        String encodeBase64String = null;
        try {
            MessageDigest md = MessageDigest.getInstance("SHA1");
            md.update(bytes);
            byte[] _bytes = md.digest();
            encodeBase64String = Base64.encodeBase64String(_bytes);
        } catch (NoSuchAlgorithmException ex) {
            ex.printStackTrace();
        }
        return encodeBase64String;
    }