public ResponseMessageWrap <int> DeleteById(long id)
 {
     return(new ResponseMessageWrap <int>
     {
         Body = PaperContentService.DeleteById(id)
     });
 }
 public ResponseMessageWrap <int> Update([FromBody] PaperContent paperContent)
 {
     return(new ResponseMessageWrap <int>
     {
         Body = PaperContentService.Update(paperContent)
     });
 }
 public PaperContentController(PaperContentService paperContentService, IPaperContentRepository paperContentRepository)
 {
     PaperContentService    = paperContentService;
     PaperContentRepository = paperContentRepository;
 }