Postman - Sending image file and json on POST - json

Question

I'm using Postman to test REST Web API and I have a method that receives this object:
public class NewShipmentDto implements Serializable {
private String description;
private Long senderId;
private Long receiverId;
private byte[] packageImage;
private CommissionPaidBy commissionPaidBy;
private Long senderPaymentMethod;
private LocationDto senderLocation;
private LocationDto receiverLocation;
// + constructors and gets/sets
}
So the body of my POST needs to be something like this:
{
"description":"Libros",
"senderId":1,
"receiverId":1,
"commissionPaidBy":"BOTH",
"senderPaymentMethod":1,
"senderLocation":
{
"latitud":100,
"longitud":100
},
"receiverLocation":
{
"latitud":100,
"longitud":100
}
}
But I also need to send the file so it can be transformed to a byte []. The thing is if I use form data to pass the file how do I send this bits:
"receiverLocation":
{
"latitud":100,
"longitud":100
}
Is it possible to send nested json in the form data?
This is my POST method, I haven't added the logic of reading the file yet:
#POST
#Consumes({MediaType.APPLICATION_JSON})
#Produces({MediaType.APPLICATION_JSON})
public Response addShipment(String shipment) throws EnviosYaException {
Gson gson = new Gson();
NewShipmentDto newShipmentDto = gson.fromJson(shipment, NewShipmentDto.class);
NewShipmentResponseDto response = shipmentServices.addShipment(newShipmentDto);
return Response.ok(gson.toJson(response)).build();
}
If necessary I could change the structure of the json to avoid having nested json, but I would like to know if it's possible first.
Thanks

Answer 1

It looks like you are using JAX-RS for the REST API. For your use case multipart/format-data content-type is more appropriate.
Please have a look at this JAX-RS question.
Or
If you like keep the JSON structure intact, you can store the base64 encoded data in a string for the image field. The model would looks like.
public class NewShipmentDto implements Serializable {
private String description;
private Long senderId;
private Long receiverId;
private String encodedPackageImage;
private CommissionPaidBy commissionPaidBy;
private Long senderPaymentMethod;
private LocationDto senderLocation;
private LocationDto receiverLocation;
// + constructors and gets/sets
}