Java Spring：如何使用@RequestBody来POST JSON对象

Question

我正在创建一个接收以下输入的API，并提供以下输出。

我已经为“new”创建了一个工作方法：

@RequestMapping(value = "/new", method = RequestMethod.GET)
public StartedGame startGame(HttpSession session){
    List<Game> games = getCurrentGames(session);
    Game newGame = new Game(wordList);
    games.add(newGame);
    return new StartedGame(newGame);
}

返回以下JSON：

{
    "gameId": "kvmuyw",
    "word": "_______"
}

但是，我需要创建一个猜测函数。我没有运气。我有这个作为我的函数头，但它似乎不正确......

@RequestMapping(value = "/guess", method = RequestMethod.POST, consumes = "application/json", produces = "application/json")
public Game makeGuess(@RequestBody String json, HttpSession session) 

Answer 1

你可能想要像

这样的东西

@RequestMapping(value = "/guess", method = RequestMethod.POST,
   consumes = "application/json", produces = "application/json")
public Game makeGuess(@RequestBody Guess guess){
  // ..
}

@Data // <- this assuming you're using Lombok - add required accessors if not
public class Guess {
  String game;
  String guess;
}

但是，如果您收到404 Not Found，则问题不在于方法定义，而在于您发布的错误网址。