exampl.txt

 String key = "userProfile";

    @Autowired
    transient UserProfileRepository userProfileRepository;

    @Autowired
    transient UserRepository userRepository;

    @Override
    public UserProfile initilizeOrFind() {
        RequestContext context = org.springframework.webflow.execution.RequestContextHolder.getRequestContext();
        ServletExternalContext externalContext = (ServletExternalContext) context.getExternalContext();
        HttpServletResponse response = (HttpServletResponse) externalContext.getNativeResponse();
        HttpServletRequest request = (HttpServletRequest) externalContext.getNativeRequest();
        return doInit(response, request, context);
    }

    public UserProfile doInit(HttpServletResponse response, HttpServletRequest request, RequestContext context) {
        UserProfile sessionUserProfile = getUserProfile(request);
        UserProfile ownedUserProfile = null;
        User user = null;
        if (SecurityContextHolder.getContext() != null && SecurityContextHolder.getContext().getAuthentication() != null) {
            Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
            if (authentication.getPrincipal() instanceof CustomUserDetails) {
                CustomUserDetails customUserDetails = (CustomUserDetails) authentication.getPrincipal();
                user = customUserDetails.getUser();
                ownedUserProfile = user.getUserProfile();
            }
        }

        if (ownedUserProfile != null) {
            sessionUserProfile = ownedUserProfile;
        } else {
            if (sessionUserProfile == null) {
                sessionUserProfile = createNewInstance();
            }
            if (user != null) {
                user.setUserProfile(sessionUserProfile);
                sessionUserProfile.setUser(user);
                userRepository.save(user);
                userProfileRepository.save(sessionUserProfile);
            }
        }
        if (sessionUserProfile != null) {
            installUserProfile((HttpServletResponse) response, sessionUserProfile);
        } else {
            throw new RuntimeException();
        }
        return sessionUserProfile;
    }

    void installUserProfile(HttpServletResponse response, UserProfile userProfile) {
        Cookie cookie = new Cookie(key, userProfile.getId().toString());
        cookie.setMaxAge(31536000);
        response.addCookie(cookie);
    }

    UserProfile getUserProfile(HttpServletRequest request) {
        UserProfile userProfile = null;
        userProfile = (UserProfile) request.getSession().getAttribute(key);
        if (userProfile == null) {
            Integer id = getProfileId(request);
            if (id != null) {
                userProfile = userProfileRepository.findOne(id);
            }
            request.getSession().setAttribute(key, userProfile);
        }
        return userProfile;
    }

    Integer getProfileId(HttpServletRequest request) {
        Integer id = null;
        Cookie cookie = findCookie(request);
        if (cookie != null) {
            return new Integer(cookie.getValue());
        }
        return id;
    }

    Cookie findCookie(HttpServletRequest request) {
        if (request.getCookies() != null) {
            for (Cookie c : request.getCookies()) {
                if (key.equals(c.getName())) {
                    return c;
                }
            }
        }
        return null;
    }

    Cookie createCookie(Integer idProfile) {
        return new Cookie(key, idProfile.toString());
    }

    public String getKey() {
        return key;
    }

    public void setKey(String key) {
        this.key = key;
    }