An introduction to Multipartfile in spring boot
1- to read content of multipartfile in string format, use this code snippet:
String data = new String(file.getBytes());
2- to upload file in spring boot, we use following format for controller endpoints:
@PostMapping(value = "url",consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
public void methodName(@RequestPart MultipartFile fileName) {
}