Spring Boot controller - Upload Multipart and JSON to DTO

Question

I want to upload a file inside a form to a Spring Boot API endpoint.

The UI is written in React:

export function createExpense(formData) {
  return         


        

Answer 1

Remove this from the react front end:

 'Content-Type': 'application/json'

Modify the Java side controller:

   @PostMapping("/{groupId}")
   public Expense create(@RequestParam("image") MultipartFile image,  @RequestParam("amount") double amount, @RequestParam("description") String description, @RequestParam("title") String title) throws IOException {
         //storageService.store(file); ....
          //String imagePath = path.to.stored.image;
         return new Expense(amount, title, description, imagePath);
 }

This can be written better but tried keeping it as close to your original code as much as I could. I hope it helps.