初めての spring mvc アプリケーションを作成しようとしました。私はアーキテクチャを使用しています: Spring MVC-Service-DAO-Persistence アーキテクチャ。このエラーが発生しました:
Field error in object 'rooms' on field 'roomTypeId': rejected value [7]; codes [typeMismatch.rooms.roomTypeId,typeMismatch.roomTypeId,typeMismatch.mypackage.domain.RoomType,typeMismatch]; arguments
[org.springframework.context.support.DefaultMessageSourceResolvable: codes [rooms.roomTypeId,roomTypeId]; arguments []; default message [roomTypeId]];
default message [Failed to convert property value of type 'java.lang.String' to required type 'mypackage.domain.RoomType'
for property 'roomTypeId'; nested exception is java.lang.IllegalStateException:
Cannot convert value of type [java.lang.String] to required type [mypackage.domain.RoomType] for property
'roomTypeId': no matching editors or conversion strategy found]
ドメイン:
@Entity
@Table(name = "rooms")
@XmlRootElement
@NamedQueries({
@NamedQuery(name = "Rooms.findAll", query = "SELECT r FROM Rooms r")})
public class Rooms implements Serializable {
...
@JoinColumn(name = "RoomTypeId", referencedColumnName = "RoomTypeId")
@ManyToOne
private RoomType roomTypeId;
...
public RoomType getRoomTypeId() {
return roomTypeId;
}
public void setRoomTypeId(RoomType roomTypeId) {
this.roomTypeId = roomTypeId;
}
}
コントローラ:
@RequestMapping(value = "/room/add", method = RequestMethod.POST)
public String addRoom(@ModelAttribute("rooms") Rooms room,
BindingResult result) {
roomService.addRoom(room);
return "redirect:/rooms";
}
私は試した:
@RequestMapping(value = "/room/add", method = RequestMethod.POST)
public String addRoom(@ModelAttribute("rooms") Rooms room, @RequestParam Long roomTypeId,
BindingResult result) {
room.setRoomTypeId(typeService.getType(roomTypeId.intValue()));
roomService.addRoom(room);
return "redirect:/rooms";
}
jsp:
<form:form method="post" action="room/add" commandName="room">
<table>
<tr>
<td><form:label path="name">
<spring:message code="label.roomname" />
</form:label></td>
<td><form:input path="name" /></td>
</tr>
<tr>
<td><form:label path="roomTypeId">
<spring:message code="label.typeroom" />
</form:label>
</td>
<td>
<form:select path="roomTypeId" name="roomTypeId">
<c:forEach items="${typeList}" var="type">
<form:option value="${type.roomTypeId}" label="${type.name}"/>
</c:forEach>
</form:select>
</td>
</tr>
<tr>
<td colspan="2"><input type="submit"
value="<spring:message code="label.addroom"/>" /></td>
</tr>
</table>
</form:form>
これが私を示している理由を理解しています。しかし、私はそれを修正する方法がわかりません。私がそれを修正するのを手伝うか、私が間違っていることを教えてください。