Fix Set-User for Link

code of sreekanthmcit

    @PostMapping("/link/submit")
    public String createLink(@Valid Link link, BindingResult bindingResult, Model model, RedirectAttributes redirectAttributes){
        User user = null;
        Optional optionalemail = BeanUtil.getBean(AuditorAwareImpl.class).getCurrentAuditor();
        if(optionalemail.isPresent()) {
            Optional optionalUser = userRepository.findByEmail((String) optionalemail.get());
            if(optionalUser.isPresent()){
                user = (User) optionalUser.get();
            }else{
                user = null;
            }
        }

        if (bindingResult.hasErrors()){
            logger.info("Validation Error Found while submitting a new Link");
            model.addAttribute("link", link);
            return "link/submit";
        }else{
            link.setUser(user);
            linkService.save(link);
            redirectAttributes.addAttribute("id", link.getId()).addFlashAttribute("success", "true");
            return "redirect:/link/{id}";
        }

    }

improved code

@PostMapping("/link/submit")
    public String createLink(@Valid Link link, BindingResult bindingResult, Model model, RedirectAttributes redirectAttributes){
        User user = (User) SecurityContextHolder.getContext().getAuthentication().getPrincipal();

        if (bindingResult.hasErrors()){
            logger.info("Validation Error Found while submitting a new Link");
            model.addAttribute("link", link);
            return "link/submit";
        }else{
            link.setUser(user);
            linkService.save(link);
            redirectAttributes.addAttribute("id", link.getId()).addFlashAttribute("success", "true");
            return "redirect:/link/{id}";
        }

    }