könemer2.0

    ObjectMapper objectMapper = new ObjectMapper();

    @PostMapping("/v1/applikation/{applikationID}/{sprache}/import")
    public ResponseEntity<Void> createApplikation(@RequestParam("json") MultipartFile file, @PathVariable long applikationID, @PathVariable Sprache sprache) throws IOException {
        final Map<String, ?> keyValue = objectMapper.readValue(file.getInputStream(), Map.class);

        for (Map.Entry<String, ?> entry : keyValue.entrySet()) {
            if (entry.getValue() instanceof String) {
                System.out.println(entry.getKey() + "=" + entry.getValue());
            }
        }
        return new ResponseEntity<>(HttpStatus.CREATED);
    }