Java:如何为流项目添加映射器

    @PostMapping(...)
    ...
    public ResponseEntity<List<PresignedUrlsResponse>> getPresignedUrlBatch(@Valid @RequestBody PresignedUrlsRequest urlsRequest) {

        List<PresignedUrlsResponse> presignedUrlResponses = urlsRequest.getRequests().stream().map(request -> {
            // TODO: put this in it's own mapping
            String url = this.mediaService.getPresignedUrl(request.getObjectId(), request.getBucket());

            PresignedUrlsResponse response = new PresignedUrlsResponse();
            response.setId(request.getId());
            response.setUrl(url);
            return response;
        }).collect(Collectors.toList());

        return ResponseEntity.ok().body(presignedUrlResponses);
    }