Multipart File upload Spring Boot

Question

Im using Spring Boot and want to use a Controller to receive a multipart file upload. When sending the file I keep getting the error 415 unsupported content type

Answer 1

@RequestBody MultipartFile[] submissions

should be

@RequestParam("file") MultipartFile[] submissions

The files are not the request body, they are part of it and there is no built-in HttpMessageConverter that can convert the request to an array of MultiPartFile.

You can also replace HttpServletRequest with MultipartHttpServletRequest, which gives you access to the headers of the individual parts.