How to use

getContentItemData

method

in

org.flowable.content.api.ContentService

InputStream dataStream = contentService.getContentItemData(contentItemId);
if (dataStream == null) {
  throw new FlowableObjectNotFoundException("Content item with id '" + contentItemId + "' doesn't have content associated with it.");

public void getRawContent(String contentId, HttpServletResponse response) {
  ContentItem contentItem = contentService.createContentItemQuery().id(contentId).singleResult();
  if (contentItem == null) {
    throw new NotFoundException("No content found with id: " + contentId);
  }
  if (!contentItem.isContentAvailable()) {
    throw new NotFoundException("Raw content not yet available for id: " + contentId);
  }
  if (!permissionService.canDownloadContent(SecurityUtils.getCurrentUserObject(), contentItem)) {
    throw new NotPermittedException("You are not allowed to read the content with id: " + contentId);
  }
  // Set correct mine-type
  if (contentItem.getMimeType() != null) {
    response.setContentType(contentItem.getMimeType());
  }
  // Write content response
  try (InputStream inputstream = contentService.getContentItemData(contentId)) {
    IOUtils.copy(inputstream, response.getOutputStream());
  } catch (IOException e) {
    throw new InternalServerErrorException("Error while writing raw content data for content: " + contentId, e);
  }
}