我正在使用帶有 Spirng JPA 的 spring boot strater 2.2.0.BUILD-SNAPSHOT。我需要將一些復雜的 SQL 與一些組一起使用我正在使用基于接口的投影的本機查詢，我能夠檢索所有字段但返回類型異常java.sql.Timestamp示例：我的實體類@Entity@Table(name = "trade")public class Trade {@Id@GeneratedValue(strategy = GenerationType.AUTO)@Column(name = "trade_id")private long tradeId;@Column(name = "symbol")private String symbol;@Column(name = "exchange")private String exchange;@Column(name = "segment")private String segment;@Column(name = "clinet_trade_id")private long clientTradeId;@Column(name = "order_id")private long orderId;@Column(name = "price")private double price;@Column(name = "sell_type")private String tradeType;@Column(name = "quantity")private int quantity;@Column(name = "trade_date_time")private Timestamp tradeDateTime;}存儲庫接口與投影接口@Repository("TradeRepository")public interface TradeRepository extends JpaRepository<Trade, Long> {// projection//https://docs.spring.io/spring-data/jpa/docs/current/reference/html/#projections//Interface-based Projections//https://www.baeldung.com/spring-data-jpa-projections@Query(value = "select symbol,date(trade_date_time) as trade_date_time , sum(quantity) as quantity , sum(quantity*price) as price  from trade where sell_type ='sell' \n" +         "and trader_date > ?1  and trader_date < ?2 and user_id= ?3 " +         "group by symbol, date(trade_date_time) " +         "order by symbol, date(trade_date_time) ", nativeQuery = true) public List<TradeView> findByNativeQuery(Timestamp fromdate, Timestamp toDate, int userId);public static interface TradeView {     public String getSymbol();     public Timestamp getTradeDateTime();     public int getQuantity();     public double getPrice();  }}在這里我得到該方法的異常getTradeDateTime()