私はここで機知に富んでいます。これは非常に些細なことのように思えますが、うまくいきません。サーバーに Long (tournamentId) とオブジェクトのリストを返す jsp ページがあります。フォームを投稿すると、リストは適切に渡されますが、Long メンバーは、送信されたことがわかりますが、null として返されます。
jsp:
<form:form method="post" action="addBets" modelAttribute="gwbCollection">
<c:choose>
<c:when test="${gwbCollection.tournamentState == 'CLOSED_FOR_BETS'}">
<br>
</c:when>
</c:choose>
<input name="tournamentId" value="${gwbCollection.tournamentId}" type="hidden"/>
<table>
<tr>
<td>Side A:</td>
<td>Score A:</td>
<td>Side B:</td>
<td>Score B:</td>
</tr>
<c:forEach var="gwb" items="${gwbCollection.games}" varStatus="status">
<tr>
<td><input name="games[${status.index}].game.gameId" value="${gwb.game.gameId}" type="hidden"/>
<input name="games[${status.index}].userId" value="${gwb.userId}" type="hidden"/>
<input name="games[${status.index}].game.tournamentId" value="${gwb.game.tournamentId}" type="hidden"/>
<input name="games[${status.index}].bet.betId" value="${gwb.bet.betId}" type="hidden"/>
${gwb.game.sideA}</td>
<td><input name="games[${status.index}].bet.scoreA" value="${gwb.bet.scoreA}"/></td>
<td>${gwb.game.sideB}</td>
<td><input name="games[${status.index}].bet.scoreB" value="${gwb.bet.scoreB}"/></td>
</tr>
</c:forEach>
</table>
<c:choose>
<c:when test="${gwbCollection.tournamentState == 'OPEN_FOR_BETS'}">
<input type="submit" />
</c:when>
</c:choose>
</form:form>
コントローラー:
@Controller
@SessionAttributes
public class BetController {
...
@RequestMapping(value = "/addBets", method = RequestMethod.POST)
public String addBet(@ModelAttribute("gwbCollection") GamesWithBetsCollection gwbCollection) {
List<Bet> bets = gwbUtil.getBets(gwbCollection);
...
}
最後に、GamesWithBetsCollection:
public class GamesWithBetsCollection {
private TournamentState tournamentState;
private Long tournamentId;
private List<GameWithBet> games;
public GamesWithBetsCollection() {
}
public List<GameWithBet> getGames() {
return games;
}
public void setGames(List<GameWithBet> games) {
this.games = games;
}
public TournamentState getTournamentState() {
return tournamentState;
}
public void setTournamentState(TournamentState tournamentState) {
this.tournamentState = tournamentState;
}
public Long getTournamentId() {
return tournamentId;
}
public void setTournamentId(long tournamentId) {
this.tournamentId = tournamentId;
}
}