Spring Data Neo4j - Practical Neo4j - page 275

Listing 11-23. login Controller
@RequestMapping(value = "/login", method = RequestMethod.POST)
public ModelAndView addUser (@ModelAttribute("graphStory") GraphStory graphStory, HttpServletResponse
response) {
ModelAndView modelAndView;
try {
graphStory = graphStoryInterface.getUserInterface().login (graphStory);
// no errors, user was found
if (CollectionUtils.isEmpty(graphStory.getErrorMsgs())) {
response.addCookie (graphStoryInterface.getHelperInterface().
addCookie(GraphStoryConstants.graphstoryUserAuthKey, graphStory.getUser().
getUsername()));
modelAndView = new ModelAndView("redirect:/social");
// user was not found
} else {
modelAndView = new ModelAndView("/mustache/html/home/message.html");
modelAndView.addObject("title", "Tell Yours");
modelAndView.addObject(graphStory.getErrorMsgs());
}
return modelAndView;
}
catch (Exception e) {
log.error(e);
return null;
}
}
Login Service
To check to see if the user attempting to log in is a valid user, the application uses the login method in UserImpl ,
which implements in UserInterface . An abbreviated version of UserInterface is shown in Listing 11-24.
Listing 11-24. UserInterface with the login Method
public interface UserInterface {
...
public GraphStory login (GraphStory graphStory) throws Exception;
...
}