Java Hibernate异常-找不到命名参数
我试图从entity(table)StudySeries中从数据库中提取对象列表:Java Hibernate异常-找不到命名参数,java,hibernate,jakarta-ee,jpa,hibernate-criteria,Java,Hibernate,Jakarta Ee,Jpa,Hibernate Criteria,我试图从entity(table)StudySeries中从数据库中提取对象列表: @Entity @Table(name="StudySeries", uniqueConstraints = { @UniqueConstraint(columnNames = "SeriesInstanceUID")}) public class StudySeries implements Serializable { ... @Id @GeneratedValue(strategy
@Entity
@Table(name="StudySeries", uniqueConstraints = {
@UniqueConstraint(columnNames = "SeriesInstanceUID")})
public class StudySeries implements Serializable {
...
@Id
@GeneratedValue(strategy = IDENTITY)
@Column(name = "SeId", unique = true, nullable = false)
private Long seId;
@Column(name="SeriesInstanceUID", unique=true, nullable = false)
private String seriesInstanceUID;
...
@ManyToOne
@JoinColumn(name = "StId", referencedColumnName="StId")
private StudyDetails studyDetails;
...
}
@Entity
@Table(name="StudyDetails", uniqueConstraints = @UniqueConstraint(columnNames = "StudyInstanceUID"))
public class StudyDetails implements Serializable {
@Id
@GeneratedValue(strategy = IDENTITY)
@Column(name="StId", unique = true, nullable = false)
private Long stId;
@Column(name="StudyInstanceUID", unique=true, nullable = false)
private String studyInstanceUID;
...
@OneToMany(fetch = FetchType.LAZY, mappedBy = "studyDetails", cascade = CascadeType.ALL)
private Set<StudySeries> studySeries = new HashSet<StudySeries>(0);
...
}
此实体与StudyDetails N-1连接(在StudyDetails上有许多StudySeries):
然而,我得到:
org.hibernate.QueryParameterException: could not locate named parameter [stId]
at org.hibernate.engine.query.spi.ParameterMetadata.getNamedParameterDescriptor(ParameterMetadata.java:100) at org.hibernate.engine.query.spi.ParameterMetadata.getNamedParameterDescriptor(ParameterMetadata.java:100)
at org.hibernate.engine.query.spi.ParameterMetadata.getNamedParameterExpectedType(ParameterMetadata.java:106)
at org.hibernate.internal.AbstractQueryImpl.determineType(AbstractQueryImpl.java:466)
at org.hibernate.internal.AbstractQueryImpl.setParameter(AbstractQueryImpl.java:436)
at com.npap.dao.StudySeriesDAOImpl.getStudySeriesObjectsByStudyId(StudySeriesDAOImpl.java:239)
有什么问题吗?在StudySeries类中,id被命名为“seId”,而不是“stId”。
您应该这样做:String hql=“from StudySeries E where E.seId=stId”
其中E.studyDetails.stId=:stId
.oopss!你是对的。。。在查询中忘记“:”。。。pffff…参数名称前面也必须紧跟“:”!i、 e没有空格,我想在where子句中使用外键stId。看看StudySeries实体上的@ManyToOne注释好的,我找到了。错误是您忘记在查询中使用冒号=:了。您应该执行String hql=“from StudySeries E,其中E.studyDetails.stId=:stId”;如果不使用:它将找不到参数。
String hql = "from StudySeries E where E.stId = stId";
org.hibernate.QueryParameterException: could not locate named parameter [stId]
at org.hibernate.engine.query.spi.ParameterMetadata.getNamedParameterDescriptor(ParameterMetadata.java:100) at org.hibernate.engine.query.spi.ParameterMetadata.getNamedParameterDescriptor(ParameterMetadata.java:100)
at org.hibernate.engine.query.spi.ParameterMetadata.getNamedParameterExpectedType(ParameterMetadata.java:106)
at org.hibernate.internal.AbstractQueryImpl.determineType(AbstractQueryImpl.java:466)
at org.hibernate.internal.AbstractQueryImpl.setParameter(AbstractQueryImpl.java:436)
at com.npap.dao.StudySeriesDAOImpl.getStudySeriesObjectsByStudyId(StudySeriesDAOImpl.java:239)