Spring boot: Upload several MultipartFile with several additional data - spring

Question

I need to create an endpoint that:
Receives N ItemType.
Receive 1 GroupType.
Each ItemType has:
attributes.
MultipartFile.
GroupType only contains attributes.
public class ItemType {
private String description;
private String security;
private Date bestdate;
private MultipartFile content;
}
public class GroupType {
private String description;
private String security;
private String metadata;
}
So, my endpoint would be something like:
public ResponseEntity<String> group(
List<ItemType> items,
GroupType group);
I don't know if it's the best approach. Some thinks comes up with this approach:
What about GroupType.security and ItemType.security?
What about MultiPart files?
How might this endpoint be called?
Any ideas?

Answer 1

Here is a solution using Multipart-FormData.
Enabling multipart properties:
# MULTIPART (MultipartProperties)
spring.servlet.multipart.enabled=true # Enable multipart uploads
spring.servlet.multipart.max-file-size=200MB # Max file
spring.servlet.multipart.max-request-size=215MB # Max Request Size
Controller:
#PostMapping(consumes = "multipart/form-data")
public ResponseEntity<String> uploadWithData(
#RequestPart("itemTypes") List<ItemType> ,
#RequestPart("group") Group group
#RequestPart MultipartFile[] file) {
// your code
}
ItemType will contain filename field to allow linking of ItemType to the uploaded file.