我有一个带有收据实体的Spring Boot应用程序，这里定义了一个LocalDateTime日期，如下所示：

@Nullable
@Column(name = "date_time")
private LocalDateTime dateTime;

在保存实体之前，我尝试将当前系统日期转换为以下格式：
年月日时：分：秒
但我收到一个DateTimeParseExcetion，其中包含以下文本：

java.time.format.DateTimeParseException: Text '26.12.2022 13:25:30' could not be parsed at index 0

下面是我的代码：

DateTimeFormatter dtf = DateTimeFormatter.ofPattern("dd.MM.yyyy HH:mm:ss", Locale.ROOT);
    LocalDateTime now = LocalDateTime.now();
    log.debug("REST request to save Receipt : {}", receiptDTO);
    if (receiptDTO.getId() != null) {
        throw new BadRequestAlertException("A new receipt cannot already have an ID", ENTITY_NAME, "idexists");
    }
    Optional<User> currentUser = userService.getUserWithAuthoritiesByLogin(SecurityContextHolder.getContext().getAuthentication().getName());
    receiptDTO.setDateTime(LocalDateTime.parse(dtf.format(now)));
    currentUser.ifPresent(user -> receiptDTO.setUser(this.UserMapper.userToUserDTO(user)));
    ReceiptDTO result = receiptService.save(receiptDTO);

更新：

DateTimeFormatter dateFormat = DateTimeFormatter.ofPattern("dd.MM.yyyy HH:mm:ss", Locale.ROOT);
        LocalDateTime now = LocalDateTime.now();
        String formattedCurrentTime = dateFormat.format(now);
        LocalDateTime localdatetime = LocalDateTime.parse(formattedCurrentTime, dateFormat);
        log.debug("REST request to save Receipt : {}", receiptDTO);
        if (receiptDTO.getId() != null) {
            throw new BadRequestAlertException("A new receipt cannot already have an ID", ENTITY_NAME, "idexists");
        }
        Optional<User> currentUser = userService.getUserWithAuthoritiesByLogin(SecurityContextHolder.getContext().getAuthentication().getName());
        receiptDTO.setDateTime(localdatetime);

更新2：
完整方法：

@PostMapping("/receipts")
    public ResponseEntity<ReceiptDTO> createReceipt(@RequestBody ReceiptDTO receiptDTO) throws URISyntaxException {
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("dd.MM.uuuu HH:mm:ss", Locale.ENGLISH);
        LocalDateTime now = LocalDateTime.now();
        String formattedCurrentTime = now.format(formatter);
        log.debug("REST request to save Receipt : {}", receiptDTO);
        if (receiptDTO.getId() != null) {
            throw new BadRequestAlertException("A new receipt cannot already have an ID", ENTITY_NAME, "idexists");
        }
        receiptDTO.setDateTime(now);
        Optional<User> currentUser = userService.getUserWithAuthoritiesByLogin(SecurityContextHolder.getContext().getAuthentication().getName());
        currentUser.ifPresent(user -> receiptDTO.setUser(this.UserMapper.userToUserDTO(user)));
        ReceiptDTO result = receiptService.save(receiptDTO);
        return ResponseEntity
            .created(new URI("/api/receipts/" + result.getId()))
            .headers(HeaderUtil.createEntityCreationAlert(applicationName, true, ENTITY_NAME, result.getId().toString()))
            .body(result);
    }