spring jpa设置多个主键遇到的小坑及解决

/*
* 主键-RID
*/
@Id
@Column(name = "RID", length = 36)
private String rid;

package com.southgis.officeHouse.entity;
import java.io.Serializable;
import javax.persistence.Id;
import lombok.Data;
import lombok.NoArgsConstructor;
 
/**
 * 
 * @author Administrator
 *	组合主键
 */
@Data
public class HistoryPK implements Serializable
{
	private static final long serialVersionUID = 1L;
	
	/*
	 * 主键-RID
	 */
	private String rid;
	
	/*
	 * 主键-历史版本号，保存格式年份_版本号，例如2018_1
	 */
	private String historyVersion;
}

package com.southgis.officeHouse.entity;
import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.IdClass;
import javax.persistence.Index;
import javax.persistence.Table;
import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.NoArgsConstructor;
 
/**
*
* @author Administrator
*	单位基本信息历史版本表
*/
 
@Data
@EqualsAndHashCode(callSuper=false)
@NoArgsConstructor
@Entity
@IdClass(HistoryPK.class)
 
@Table(name = "UNIT_HISTORY",indexes={
@Index(name="inx_unitHistory_orgid",columnList="ORGID")})
 
public class UnitHistory extends UnitBase implements Serializable
{
private static final long serialVersionUID = -4466904221026481006L;
/*
* 主键-RID
*/
 
@Id
@Column(name = "RID", length = 36)
private String rid;
/*
* 主键-历史版本号，保存格式年份_版本号，例如2018_1
*/
 
@Id
@Column(name = "HISTORY_VERSION",length=36)
private String historyVersion;
}

@Query(value = "select * from tbl_ic_film_info where StudyId = ?1",nativeQuery = true)
List<IcFilmInfo> findByStudyIdSQL(String studyId);

List<IcFilmInfo> icFilmInfoList= icFilmInfoRepository.findByStudyIdSQL(studyId);

@Query(value = "select StudyId,FileName from tbl_ic_film_info where StudyId = ?1",nativeQuery = true)
List<Map<String,String>> findByStudyIdMap(String studyId);

@AllArgsConstructor
@Data
public class IcFilmInfoVO {
    private String studyId;
    /**
     * 文件名
     */
    private String fileName;
}

@Query(value = "select new cloud.image.vo.IcFilmInfoVO(t.studyId,t.fileName) from IcFilmInfo t where t.studyId = ?1")
List<IcFilmInfoVO> findByStudyId(String studyId);

@Entity
@Data
@IdClass(IcFilmInfoPk.class)
@Table(name = "tbl_ic_film_info")
public class IcFilmInfo implements Serializable {
    private static final long serialVersionUID = 9121531612760132363L;
    @Id
    @Column(name = "StudyId")
    private String studyId;
    /**
     * 文件名
     */
    @Id
    @Column(name = "FileName")
    private String fileName;
}

@Data
public class IcFilmInfoPk implements Serializable {
    private static final long serialVersionUID = -1570834456846579284L;
    private String studyId;
    private String fileName;
}

@Query(value = "select * from tbl_ic_film_info where StudyId = ?1",nativeQuery = true)
List<IcFilmInfo> findByStudyIdSQL(String studyId);