可以通过以下方式（半伪代码）通过spring安全性完成此操作：

import org.springframework.security.web.savedrequest.RequestCache;
import org.springframework.security.web.savedrequest.SavedRequest;

@Controller
public class SignupController
{

    @Autowired
    RequestCache requestCache;

    @Autowired
    protected AuthenticationManager authenticationManager;

    @RequestMapping(value = "/account/signup/", method = RequestMethod.POST)
    public String createNewUser(@ModelAttribute("user") User user, BindingResult result,  HttpServletRequest request, HttpServletResponse response) {
        //After successfully Creating user
        authenticateUserAndSetSession(user, request);

        return "redirect:/home/";
    }

    private void authenticateUserAndSetSession(User user, HttpServletRequest request) {
        String username = user.getUsername();
        String password = user.getPassword();
        UsernamePasswordAuthenticationToken token = new UsernamePasswordAuthenticationToken(username, password);

        // generate session if one doesn't exist
        request.getSession();

        token.setDetails(new WebAuthenticationDetails(request));
        Authentication authenticatedUser = authenticationManager.authenticate(token);

        SecurityContextHolder.getContext().setAuthentication(authenticatedUser);
    }
}

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