Maximum upload size exceeded; nested exception is
java.lang.IllegalStateException:
org.apache.tomcat.util.
http.fileupload.FileUploadBase$FileSizeLimitExceededException: The
field file exceeds its maximum permitted size of 1048576 bytes.

@PostMapping("/post")
    public ResponseEntity<String> handleFileUpload(@RequestParam("file") MultipartFile file) {
      String message = "";
      try {
        storageService.store(file);
        files.add(file.getOriginalFilename());

        message = "You successfully uploaded " + file.getOriginalFilename() + "!";
        return ResponseEntity.status(HttpStatus.OK).body(message);
      } catch (Exception e) {
      message = "FAIL to upload " + file.getOriginalFilename() + "!";
      return ResponseEntity.status(HttpStatus.EXPECTATION_FAILED).body(message);
  }

}

spring.servlet.multipart.max-file-size=-1
spring.servlet.multipart.max-request-size=-1

spring.servlet.multipart.max-file-size=5MB
spring.servlet.multipart.max-request-size=5MB

spring.http.multipart.max-file-size=5MB
spring.http.multipart.max-request-size=5MB

multipart.max-file-size=5MB
multipart.max-request-size=5MB