使用spring @RestController在null上返回HTTP 204

当然可以

选项1 ：

@RestControllerpublic class RepoController {    @RequestMapping(value = "/document/{id}", method = RequestMethod.GET)    public Object getdocument(@PathVariable long id, HttpServletResponse response) {       Object object = getObject();       if( null == object ){          response.setStatus( HttpStatus.SC_NO_CONTENT);       }       return object ;    }}

选项2：

@RestControllerpublic class RepoController {    @RequestMapping(value = "/document/{id}", method = RequestMethod.GET)    public Object getdocument(@PathVariable long id) {       Object object = getObject();       if ( null == object ){          return new ResponseEntity<Void>(HttpStatus.NO_CONTENT);       }       return object ;    }}

可能有错别字，但您会明白。