@RequestMapping(value = "/edit/update", method = RequestMethod.POST)
public String update(@Valid BookForm form, BindingResult result, Model model,
@RequestParam(value="uploadFile",required=false) MultipartFile file) {
logger.info("update start");
if (file.getSize() > uploadFileSize) {
result.rejectValue("cover", "error.fileSize",
new Object[]{uploadFileSize},"File size error");
}
if (result.hasErrors()) {
return "editBook";
}
///
}