로직 순서1. 발급@Componentpublic class JwtUtils { private final SecretKey secretKey; public JwtUtils(@Value("${spring.jwt.secret}") String secret) { secretKey = new SecretKeySpec(secret.getBytes(StandardCharsets.UTF_8), Jwts.SIG.HS256.key().build().getAlgorithm()); } public String createJwt(String category, String phoneNumber, String role, Long expiredMs) { return Jwts.builder() ..