better way to POST multipart files with JSON data springboot - spring-boot

Question

I am working on a spring boot project, I have a customer model which consists of properties, including image paths which I am storing in the file system or folder and uploading the entire form with image paths in DB, I have successfully implemented my target task however I was wondering if there is a better and nicer way to achieve this, your answers, comments, and feedbacks are appreciated here is my code
Customer model:
public class Customer {
private String contactMode = "Mobile Number";
#Pattern(regexp ="(251|0)[0-9]{9}" , message = "Invalid phone number")
private String phoneNumber; // phone number
private String identityType = "101-ID [0]";
#NotNull(message = "ID number is required")
private String idNumber;
private String countryOfIssue = "XXXXXXX";
#NotNull(message = "Issue date is required")
#PastOrPresent(message = "Issue date cannot be future date")
private Date issueDate;
#Future(message = "Expiry date cannot be in the past or present")
#NotNull(message = "Expiry date is required")
private Date expiryDate;
// storing customerImage , customerID and customerSignature paths in DB
private String customerImage;
private String customerID;
private String customerSignature;
}
Customer Service:
private String path = "C:\Users\User\Desktop\docs\uploaded_files\";
public Customer saveCustomer(Customer customer, MultipartFile customerImage, MultipartFile customerID,
MultipartFile customerSignature) throws Exception {
final String PATH = path + customer.getContactDetail();
Customer phoneNumberExists = customerRepository.findByContactDetail(customer.getContactDetail());
byte[] imageBytes = customerImage.getBytes();
byte[] idBytes = customerID.getBytes();
byte[] signatureBytes = customerSignature.getBytes();
Path customerImagePath = Paths.get
(PATH + "_photo_" + customerImage.getOriginalFilename());
Files.write(customerImagePath, imageBytes);
Path customerIDPath =
Paths.get(PATH + "_ID_" + customerID.getOriginalFilename());
Files.write(customerIDPath, idBytes);
Path customerSignaturePath =
Paths.get(PATH + "_Sign_" + customerSignature.getOriginalFilename() + "");
Files.write(customerSignaturePath, signatureBytes);
if (phoneNumberExists != null) {
throw new PhoneNumberTakenException("Phone number is taken ");
}
customer.setAge(new Date().getYear() - customer.getDateOfBirth().getYear());
customer.setCustomerImage(String.valueOf(customerImagePath));
customer.setCustomerID(String.valueOf(customerIDPath));
customer.setCustomerSignature(String.valueOf(customerSignaturePath));
customer.setFromDate(LocalDate.now());
customer.setStatus(Customer.Status.Submitted);
Customer customerRecord = customerRepository.saveAndFlush(customer);
return customerRecord;
}
Customer Controller : look at how iam passing multipart files and other fields in the controller to service
#PostMapping()
public ResponseEntity<Customer> createCustomer(#Valid #RequestPart("customer") String customer, MultipartFile customerImage, MultipartFile customerID, MultipartFile customerSignature
) throws Exception {
ObjectMapper customerMapper = new ObjectMapper();
Customer savedCustomer = customerMapper.readValue(customer, Customer.class);
Customer customerRecord = customerService.saveCustomer(savedCustomer, customerImage, customerID, customerSignature);
log.debug("inside createCustomer() controller : {}", customerRecord);
return ResponseEntity.status(HttpStatus.CREATED).body(customerRecord);
}
Postman post request to the endpoint:
Postman response :