java 用hmac-sha1进行签名

    public static String getSignature(String s) throws NoSuchAlgorithmException, UnsupportedEncodingException, InvalidKeyException {//        String Token = "O-xJVg7ZEXrtjWDNhzu05R7iZtyyXmv6NGt-xymKg0eOLCwwBCIgBBaDqJabzbPVCez1BvcI8q7blDGy4ZeCQQ";        String key = "O-xJVg7ZEXrtjWDNhzu05R7iZtyyXmv6NGt-xymKg0eOLCwwBCIgBBaDqJabzbPVCez1BvcI8q7blDGy4ZeCQQ";        System.out.println(key);        String request = s.toLowerCase();        Mac mac = Mac.getInstance("HmacSHA1");        SecretKeySpec keySpec = new SecretKeySpec(key.getBytes(), "HmacSHA1");        mac.init(keySpec);        mac.update(request.getBytes());        byte[] encryptedBytes = mac.doFinal();        return Base64.encodeBase64String(encryptedBytes);    }