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public String generateToken(String username) { return Jwts.builder() .setSubject(username) .setExpiration(Date.from(Instant.now().plus(Duration.ofHours(1)))) // 1 óra .signWith(SignatureAlgorithm.HS256, SECRET_KEY) .compact(); } public boolean validateToken(String token) { try { Jws<Claims> jws = Jwts.parserBuilder() .setSigningKey(SECRET_KEY) .build() .parseClaimsJws(token); Claims claims = jws.getBody(); String username = claims.getSubject(); return isTokenValidForUser(username, token); } catch (Exception e) { return false; } } private boolean isTokenValidForUser(String username, String token) { User user = userService.findByUsername(username); if (user != null) { return token.equals(user.getJwtToken()); } return false; }
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