Java 无法提取结果集，列不存在

我有一个像这样的实体

  @Entity
    @Table(name = "ebooking")
    public class EBooking {

        @Id
        @Column(name = "bookId")
        private String bookId;

我也像你一样

public interface EBookingRepository extends JpaRepository<EBooking, String>, JpaSpecificationExecutor<EBooking> {

    @Query("select book from EBooking book where book.bookId = :id")
    EBooking getByBookId(@Param("id") String id);
}

为什么

ebooking0.book\u id

？只有

ebooking

表

---

谢谢大家!

ebooking\uu

是由Hibernate生成的

ebooking

表的别名。如果您打开SQL日志记录，您可以检查这一点

错误表明表

ebooking

中没有列

book\u id

org.springframework.dao.InvalidDataAccessResourceUsageException: could not extract ResultSet; SQL [n/a]; nested exception is org.hibernate.exception.SQLGrammarException: could not extract ResultSet

org.postgresql.util.PSQLException: ERROR: column ebooking0_.book_id does not exist
  Position: 8