Spring MVC的：獲取會話屬性進行的跨在同一個控制器

請與我有限的Spring MVC的knowlodge承擔不同的方法，仍試圖瞭解它是如何工作的。Spring MVC的：獲取會話屬性進行的跨在同一個控制器

我的問題如下：我正在進行一個簡單的猜謎遊戲，在該遊戲中，您將從下拉選擇選項中選擇一封信，並刷新相同的視圖，並更新您做出多少次猜測的信息。

遊戲（模型類）

public class Game { 

    private Player player; 
    private Language language; 
    private Random randomGenerator; 

    private List<String> dictionary; 
    private char[] selectedWord;

與其相應的getter/setter方法和這樣。

控制器類：

@Controller 
@SessionAttributes({"game"}) 
public class SimpleController { 

@Autowired 
private SessionLocaleResolver localeResolver; 

private LoginValidator loginValidator; 
private GameValidator gameValidator; 

@Autowired 
public void setLoginValidator(LoginValidator loginValidator) { 
    this.loginValidator = loginValidator; 
} 

@Autowired 
public void setGameValidator(GameValidator gameValidator) { 
    this.gameValidator = gameValidator; 
} 


@RequestMapping(value = "/login", method = RequestMethod.GET) 
public ModelAndView init(ModelMap model) { 

    ModelAndView mav = new ModelAndView("/views/login.jsp"); 
    LoginBean loginBean = new LoginBean(); 
    model.addAttribute("game", new Game()); 
    model.addAttribute("ENGLISH", Language.ENGLISH); 
    model.addAttribute("SPANISH", Language.SPANISH); 

    mav.addObject("LoginBean", loginBean); 
    return mav; 

} 

@RequestMapping (value="/processLogin", method=RequestMethod.POST) 
public String login (HttpServletRequest request, HttpServletResponse response, 
     @ModelAttribute("LoginBean") LoginBean loginBean, 
     @ModelAttribute("Game") Game game, 
     BindingResult result, 
     SessionStatus status, ModelMap model) { 

    /* I'm aware I would need a validator of some sort, but for now I'm trying to get this to work without one*/ 


    if (loginBean.getLanguage() == Language.ENGLISH) {   
     localeResolver.setLocale(request, response, new Locale("EN")); 
    } 
    else{ 
     localeResolver.setLocale(request, response, new Locale("ES")); 
    } 

    loginBean.setDictionary(FileLoader.loadDictionary(loginBean.getLanguage()));   

    game.setPlayer(loginBean.getPlayer()); 
    game.setLanguage(loginBean.getLanguage()); 
    game.setDictionary(loginBean.getDictionary()); 
    game.setSelectedWord(game.getRandomWord(game.getDictionary())); 


    model.addAttribute("Game", game); 
    request.getSession().setAttribute("game", game); 

    System.out.println(game.getSelectedWord()); 
    return "redirect:/index.htm"; 
} 


@RequestMapping(value = "/index", method = RequestMethod.GET) 
public ModelAndView play(HttpServletRequest request, HttpSession session, 
     @ModelAttribute("Game") Game game) { 

    ModelAndView mav = new ModelAndView("/views/index.jsp"); 

    if(session.getAttribute("game") != null) { 
     System.out.println("finding session attributes"); 
     game = (Game)session.getAttribute("game"); 
     mav.addObject("game", game);   
    } else { 
     System.out.println("no luck finding those"); 
    } 

    return mav; 
} 

@RequestMapping (value="/guessLetter", method=RequestMethod.POST) 
public String guessLetter (HttpServletRequest request, HttpServletResponse response, 
     HttpSession session, @ModelAttribute("Game") Game game) { 


    if(session.getAttribute("game") != null) { 
     System.out.println("ESTOY buscando session attr mietras adivino"); 
     game = (Game)session.getAttribute("game");   
     System.out.println("guess?" + game.getGuess()); 
    } else { 
     System.out.println("nothing gets here"); 
    }  

    return "redirect:/index.htm"; 

} 



}

請讓我知道，如果我需要更多的一些信息

來源

2017-05-04 Juan M

'@ModelAttribute（「遊戲」）'根本不匹配'@SessionAttributes名稱（「遊戲」）'，因此不能存儲，並從會話檢索。 –

@ M.Deinum就是這樣！謝謝！如果您將它作爲答案發布，我會將其作爲正確答案進行檢查。 –

由於我投了問題的封閉，因爲它只是一個錯字答案的性質。 –

可以聲明一個會話範圍bean類，你可以將所有必要的屬性更新的問題。

當bean是在您的控制器，你可以從你的控制器的任何方法需要獲取/設置的所有字段@Autowired。

只是註釋遊戲爲@Component和自動裝配它，而不是手動創建它。

來源

2017-05-04 14:27:59 StanislavL

Spring MVC的：獲取會話屬性進行的跨在同一個控制器

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