我遵循文档和示例缩放示例签名在springboot中创建端点以生成签名。我能够用api key&secret成功创建签名。但是，当我尝试使用签名加入时，会显示一个错误“会议号码错误”。node js代码运行良好。
这是我的片段

@PostMapping("/signature")
public ResponseEntity<?> generateSignature(String meetingNumber, Integer role) {
    try {
        Mac hasher = Mac.getInstance("HmacSHA256");
        String ts = Long.toString(System.currentTimeMillis() - 30000);
        String msg = String.format("%s%s%s%d", API_KEY, meetingNumber, ts, role);

        hasher.init(new SecretKeySpec(API_SECRET.getBytes(), "HmacSHA256"));

        String message = Base64.getEncoder().encodeToString(msg.getBytes());
        byte[] hash = hasher.doFinal(message.getBytes());

        String hashBase64Str = DatatypeConverter.printBase64Binary(hash);
        String tmpString = String.format("%s.%s.%s.%d.%s", API_KEY, meetingNumber, ts, role, hashBase64Str);
        String encodedString = Base64.getEncoder().encodeToString(tmpString.getBytes());

        return ResponseEntity.ok()
                .body(ApiResponse.success(encodedString.replaceAll("\\=+$", "")));

    }
    catch (NoSuchAlgorithmException e) { 
        return ResponseEntity.badRequest()
            .body(ApiResponse.error("Error creating signature"));
    }
    catch (InvalidKeyException e) {
        return ResponseEntity.badRequest()
                    .body(ApiResponse.error("Error creating signature"));
    }
}