String query = "WITH Search(id, name, merchantId, merchantName,merchantNo, purpose, maxDate, paymentAmount) AS (SELECT PAS.GATEWAY_ID AS id, (SELECT NAME FROM GATEWAY_DETAILS WHERE GATEWAY_ID=(SELECT GATEWAY_ID FROM GATEWAY WHERE GATEWAY_ID=PAS.GATEWAY_ID)) AS NAME, PD.merchantName_ID, (SELECT merchantName_NAME FROM merchantName_MASTER WHERE merchantName_ID=PD.merchantName_ID) AS merchantName, PD.TXN_NO, (SELECT MERCHANT_DESC FROM MERCHANTS WHERE DESC_ID=PAS.DESC_ID) AS PURPOSE, PD.TXN_DATE AS maxDate,CHEQUE_AMOUNT FROM TXN_DETAILS PD INNER JOIN GATEWAY_PASS PAS ON PD.PMNT_TXN_ID=PAS.PMNT_TXN_ID WHERE PD.TXN_DATE BETWEEN '2016/10/28' AND '2016/12/28' AND PD.GATEWAY_ID=PAS.GATEWAY_ID), MaxDate1(id1, MAX_DATE) AS (SELECT PD.GATEWAY_ID, MAX(maxDate) AS MAX_DATE FROM TXN_DETAILS PD, Search SMD WHERE GATEWAY_ID IN(SELECT id FROM Search) GROUP BY PD.GATEWAY_ID), MaxDate2(id1, MAX_DATE) AS ( SELECT PD.GATEWAY_ID, MAX(PD.TXN_DATE) FROM TXN_DETAILS PD, Search SMD WHERE PD.GATEWAY_ID IN(SMD.id) GROUP BY PD.GATEWAY_ID ), TxnDetails(GATEWAY1, txnDate1, GATEWAY2, txnDate2) AS ( SELECT MD1.id1,MD2.id1,MD1.MAX_DATE, MD2.MAX_DATE FROM MaxDate1 MD1 INNER JOIN MaxDate2 MD2 ON MD1.id1=MD2.id1 WHERE MD1.MAX_DATE=MD2.MAX_DATE ) SELECT PD.GATEWAY_ID, (SELECT NAME FROM GATEWAY_DETAILS WHERE GATEWAY_ID=(SELECT GATEWAY_ID FROM GATEWAY WHERE GATEWAY_ID=PD.GATEWAY_ID)) AS NAME, (SELECT merchantName_NAME FROM merchantName_MASTER WHERE merchantName_ID=PD.merchantName_ID) AS merchantName_NAME, PD.TXN_NO, PD.TXN_DATE, PD.CHEQUE_AMOUNT, (SELECT DESC_ID FROM MERCHANTS WHERE DESC_ID IN (SELECT DESC_ID FROM GATEWAY_PASS WHERE PMNT_TXN_ID=PD.PMNT_TXN_ID)) AS DESC_ID , (SELECT MERCHANT_DESC FROM MERCHANTS WHERE DESC_ID IN (SELECT DESC_ID FROM GATEWAY_PASS WHERE PMNT_TXN_ID=PD.PMNT_TXN_ID)) AS PURPOSE , PD.TXN_DATE FROM TXN_DETAILS PD WHERE PD.GATEWAY_ID IN (SELECT GATEWAY1 FROM TxnDetails) AND PD.TXN_DATE IN (SELECT txnDate2 FROM TxnDetails)";
List<Object[]> ObjList = entityManager.createNativeQuery(query).getResultList();
List<TxntxnDTO> txnDtoList = new ArrayList();
for (Object[] object : ObjList) {
TxnDTO txnDTO = new TxnDTO();
txnDTO.setid((String) object[0]);
txnDTO.setname((String) object[1]);
txnDTO.setmerchantNameName((String) object[2]);
txnDTO.setmerchantNo((String) object[3]);
txnDTO.setTxnDate((Date) object[4]);
txnDTO.setTxnAmount((BigDecimal) object[5]);
txnDTO.setMerchantId((Integer) object[6]);
txnDTO.setTxnDesc((String) object[7]);
txnDtoList.add(txnDTO);
}
查询在SQL中正常工作但在DAO中出错
答案 0 :(得分：0)
我设法通过强制转换对象解决了这个问题：
SELECT CAST(field AS VARCHAR(20)) AS field
从https://stackoverflow.com/a/12986024/2454665开始，有时数据库会返回奇怪类型的自定义SQL查询结果，这些查询无法映射到Hibernate类型，因此也就是CAST。
答案 1 :(得分：0)
我已按照
解决了这个问题这是我的DTO课程
public class PaymentPostingDTO {
private String id;
private String name;
private String merchantId;
private String merchantName;
private Integer merchantNo;
private String purpose;
private Date maxDate;
private BigDecimal paymentAmount;
/**
* @return the id
*/
public String getId() {
return id;
}
/**
* @param id
* the id to set
*/
public void setId(String id) {
this.id = id;
}
/**
* @return the name
*/
public String getName() {
return name;
}
/**
* @param name
* the name to set
*/
public void setName(String name) {
this.name = name;
}
/**
* @return the merchantId
*/
public String getMerchantId() {
return merchantId;
}
/**
* @param merchantId
* the merchantId to set
*/
public void setMerchantId(String merchantId) {
this.merchantId = merchantId;
}
/**
* @return the merchantName
*/
public String getMerchantName() {
return merchantName;
}
/**
* @param merchantName
* the merchantName to set
*/
public void setMerchantName(String merchantName) {
this.merchantName = merchantName;
}
/**
* @return the merchantNo
*/
public Integer getMerchantNo() {
return merchantNo;
}
/**
* @param merchantNo
* the merchantNo to set
*/
public void setMerchantNo(Integer merchantNo) {
this.merchantNo = merchantNo;
}
/**
* @return the purpose
*/
public String getPurpose() {
return purpose;
}
/**
* @param purpose
* the purpose to set
*/
public void setPurpose(String purpose) {
this.purpose = purpose;
}
/**
* @return the maxDate
*/
public Date getMaxDate() {
return maxDate;
}
/**
* @param maxDate
* the maxDate to set
*/
public void setMaxDate(Date maxDate) {
this.maxDate = maxDate;
}
/**
* @return the paymentAmount
*/
public BigDecimal getPaymentAmount() {
return paymentAmount;
}
/**
* @param paymentAmount
* the paymentAmount to set
*/
public void setPaymentAmount(BigDecimal paymentAmount) {
this.paymentAmount = paymentAmount;
}
}
这是我的DAO实施
Session session = getHibernateSession();
String query = "WITH Search(id, name, merchantId, merchantName,merchantNo, purpose, maxDate, paymentAmount) AS
(
SELECT PAS.GATEWAY_ID AS id, (SELECT NAME FROM GATEWAY_DETAILS WHERE GATEWAY_ID=(SELECT GATEWAY_ID FROM GATEWAY WHERE GATEWAY_ID=PAS.GATEWAY_ID)) AS NAME, PD.merchantName_ID, (SELECT merchantName_NAME FROM merchantName_MASTER WHERE merchantName_ID=PD.merchantName_ID) AS merchantName, PD.TXN_NO, (SELECT MERCHANT_DESC FROM MERCHANTS WHERE DESC_ID=PAS.DESC_ID) AS PURPOSE, PD.TXN_DATE AS maxDate,CHEQUE_AMOUNT FROM TXN_DETAILS PD INNER JOIN GATEWAY_PASS PAS ON PD.PMNT_TXN_ID=PAS.PMNT_TXN_ID WHERE PD.TXN_DATE BETWEEN '2016/10/28' AND '2016/12/28' AND PD.GATEWAY_ID=PAS.GATEWAY_ID), MaxDate1(id1, MAX_DATE) AS (SELECT PD.GATEWAY_ID, MAX(maxDate) AS MAX_DATE FROM TXN_DETAILS PD, Search SMD WHERE GATEWAY_ID IN(SELECT id FROM Search) GROUP BY PD.GATEWAY_ID), MaxDate2(id1, MAX_DATE) AS ( SELECT PD.GATEWAY_ID, MAX(PD.TXN_DATE) FROM TXN_DETAILS PD, Search SMD WHERE PD.GATEWAY_ID IN(SMD.id) GROUP BY PD.GATEWAY_ID ), TxnDetails(GATEWAY1, txnDate1, GATEWAY2, txnDate2) AS ( SELECT MD1.id1,MD2.id1,MD1.MAX_DATE, MD2.MAX_DATE FROM MaxDate1 MD1 INNER JOIN MaxDate2 MD2 ON MD1.id1=MD2.id1 WHERE MD1.MAX_DATE=MD2.MAX_DATE ) SELECT PD.GATEWAY_ID, (SELECT NAME FROM GATEWAY_DETAILS WHERE GATEWAY_ID=(SELECT GATEWAY_ID FROM GATEWAY WHERE GATEWAY_ID=PD.GATEWAY_ID)) AS NAME, (SELECT merchantName_NAME FROM merchantName_MASTER WHERE merchantName_ID=PD.merchantName_ID) AS merchantName_NAME, PD.TXN_NO, PD.TXN_DATE, PD.CHEQUE_AMOUNT, (SELECT DESC_ID FROM MERCHANTS WHERE DESC_ID IN (SELECT DESC_ID FROM GATEWAY_PASS WHERE PMNT_TXN_ID=PD.PMNT_TXN_ID)) AS DESC_ID , (SELECT MERCHANT_DESC FROM MERCHANTS WHERE DESC_ID IN (SELECT DESC_ID FROM GATEWAY_PASS WHERE PMNT_TXN_ID=PD.PMNT_TXN_ID)) AS PURPOSE , PD.TXN_DATE FROM TXN_DETAILS PD WHERE PD.GATEWAY_ID IN (SELECT GATEWAY1 FROM TxnDetails) AND PD.TXN_DATE IN (SELECT txnDate2 FROM TxnDetails
)";
SQLQuery sqlQuery = session.createSQLQuery(query);
sqlQuery.addScalar("id", StringType.INSTANCE);
sqlQuery.addScalar("name", StringType.INSTANCE);
sqlQuery.addScalar("merchantId", StringType.INSTANCE);
sqlQuery.addScalar("merchantName", StringType.INSTANCE);
sqlQuery.addScalar("merchantNo", IntegerType.INSTANCE);
sqlQuery.addScalar("purpose", StringType.INSTANCE);
sqlQuery.addScalar("maxDate", DateType.INSTANCE);
sqlQuery.addScalar("paymentAmount", BigDecimalType.INSTANCE);
sqlQuery.setResultTransformer(Transformers.aliasToBean(PaymentPostingDTO.class));
List<PaymentPostingDTO> paymentList = sqlQuery.list();