JWT & Spring Boot

 @PostMapping("/login")
    public ResponseEntity<?> loginUser(@RequestBody User user) {
        User userFound = userRepository.findByEmail(user.getEmail());
        if(userFound == null) {
            return ResponseEntity.status(HttpStatus.UNAUTHORIZED).body("Email non trouvé");
        }

        if(!passwordEncoder.matches(user.getPassword(), userFound.getPassword())) {
            return ResponseEntity.status(HttpStatus.UNAUTHORIZED).body("Mot de passe incorrect");
        }

        return ResponseEntity.ok("Login effectué");
    }