야곱 :
나는 봄 부트를 사용하여 JPQL 쿼리를 사용하여 데이터베이스의 데이터를 가져 오는 루프에 데이터를하려 할 때, 나는 다음과 같은 오류를 얻고있다
{
"message": "[Ljava.lang.Object; cannot be cast to com.spacestudy.model.RoomCPCMapping",
"error": "Internal Server Error",
"path": "/spacestudy/rockefeller/survey/surveyform/occupant/getClientCPCWithPercentage"
}
다음과 같은 내 저장소 쿼리
@Query("SELECT u.nCCPCode,u.nPercent FROM RoomCPCMapping u JOIN u.clientCPC ur where u.nRoomAllocationId=:nRoomAllocationId")
List<RoomCPCMapping> findNCCPCodeByNRoomAllocationID(@Param(value="nRoomAllocationId") Integer nRoomAllocationId );
그리고, 다음과 같은 쿼리 함수를 호출하고
List<RoomCPCMapping>
roomCpcMappingCodeObj = roomCPCMappingRepositoryObj.findNCCPCodeByNRoomAllocationID(nRoomAllocationID);
결과 개체를 사용하여, 나는 다음과 같은 루프를 시도하고있다
for(RoomCPCMapping rpcLoopObj:roomCpcMappingCodeObj)
{
if(clientCpcCodeMappingLoopObj.nClientCPCMappingId==rpcLoopObj.getnCCPCode())
{
clientCpcCodeMappingLoopObj.nPercentage=rpcLoopObj.nPercent;
}
}
클래스는 다음과 같은 내 모델,
@Entity
@Table(name="roomccpcmapping")
public class RoomCPCMapping implements Serializable
{
/**
*
*/
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "roomccpcmapping_seq_generator")
@SequenceGenerator(name = "roomccpcmapping_seq_generator", sequenceName = "roomccpcmapping_seq",allocationSize=1)
@Column(name="nroom_ccpc_mapping_id", columnDefinition="serial")
public Integer nRoomCcpcMappingId;
@Column(name="nroom_allocation_id")
public Integer nRoomAllocationId;
@Column(name="nccp_code")
public Integer nCCPCode;
@Column(name="npercent")
public Integer nPercent;
@Column(name="nresponsible_person_id")
public Integer nResponsiblePersonId;
@ManyToOne(optional = true, cascade = { CascadeType.MERGE })
@JoinColumn(name = "nccp_code", insertable = false, updatable = false)
public ClientCostPoolCodes clientCPC ;
public Integer getnRoomCcpcMappingId()
{
return nRoomCcpcMappingId;
}
public void setnRoomCcpcMappingId(Integer nRoomCcpcMappingId)
{
this.nRoomCcpcMappingId = nRoomCcpcMappingId;
}
public Integer getnRoomAllocationId()
{
return nRoomAllocationId;
}
public void setnRoomAllocationId(Integer nRoomAllocationId)
{
this.nRoomAllocationId = nRoomAllocationId;
}
public Integer getnCCPCode()
{
return nCCPCode;
}
public void setnCCPCode(Integer nCCPCode)
{
this.nCCPCode = nCCPCode;
}
public Integer getnPercent()
{
return nPercent;
}
public void setnPercent(Integer nPercent)
{
this.nPercent = nPercent;
}
public Integer getnResponsiblePersonId()
{
return nResponsiblePersonId;
}
public void setnResponsiblePersonId(Integer nResponsiblePersonId)
{
this.nResponsiblePersonId = nResponsiblePersonId;
}
public ClientCostPoolCodes getClientCPC()
{
return clientCPC;
}
public void setClientCPC(ClientCostPoolCodes clientCPC)
{
this.clientCPC = clientCPC;
}
public RoomCPCMapping(Integer nRoomCcpcMappingId, Integer nRoomAllocationId, Integer nCCPCode, Integer nPercent,
Integer nResponsiblePersonId, ClientCostPoolCodes clientCPC) {
super();
this.nRoomCcpcMappingId = nRoomCcpcMappingId;
this.nRoomAllocationId = nRoomAllocationId;
this.nCCPCode = nCCPCode;
this.nPercent = nPercent;
this.nResponsiblePersonId = nResponsiblePersonId;
this.clientCPC = clientCPC;
}
public RoomCPCMapping() {
}
}
왜 오류가 이러한 종류는 무엇입니까?
마치에이 코왈 스키 :
옵션 1) 있는지 확인은 RoomCPCMapping
투사 인터페이스입니다 :
public interface RoomCPCMappingResult {
String getNCCPCode();
String getNPercent();
...
}
옵션 2) 결과 클래스 레거시 옵션을 사용합니다 :
SELECT new com.my.package.RoomCPCMappingResult(u.nCCPCode,u.nPercent)
FROM RoomCPCMapping u JOIN u.clientCPC ur
where u.nRoomAllocationId=:nRoomAllocationId
단지 당신이 거기에 적절한 생성자의 존재를 확인하십시오.