如何創建方法從CrudRepository延長複合鍵

Question

我有1類ContainerLoadList與複合鍵ContainerLoadListPK這樣

@Embeddable 
public class ContainerLoadListPK implements Serializable { 

    /** 
    * 
    */ 
    private static final long serialVersionUID = 3526479259987259367L; 
    @Basic(optional = false) 
    @NotNull 
    @Size(min = 1, max = 13) 
    @Column(name = "ContainerNo") 
    private String containerNo; 
    @Basic(optional = false) 
    @NotNull 
    @Size(min = 1, max = 6) 
    @Column(name = "VesselCode") 
    private String vesselCode; 
    @Basic(optional = false) 
    @NotNull 
    @Size(min = 1, max = 8) 
    @Column(name = "Voyage") 
    private String voyage; 

    public ContainerLoadListPK() { 
    } 

    public ContainerLoadListPK(String containerNo, String vesselCode, String voyage) { 
     this.containerNo = containerNo; 
     this.vesselCode = vesselCode; 
     this.voyage = voyage; 
    } 

    public String getContainerNo() { 
     return containerNo; 
    } 

    public void setContainerNo(String containerNo) { 
     this.containerNo = containerNo; 
    } 

    public String getVesselCode() { 
     return vesselCode; 
    } 

    public void setVesselCode(String vesselCode) { 
     this.vesselCode = vesselCode; 
    } 

    public String getVoyage() { 
     return voyage; 
    } 

    public void setVoyage(String voyage) { 
     this.voyage = voyage; 
    } 
} 

和我有另一個接口從CrudRepository擴展這樣

public interface ContainerLoadListRepository extends CrudRepository<ContainerLoadList, ContainerLoadListPK> { 
    List<ContainerLoadList> findByBNo(@Param("bNo") String bNo); 

    @Query(name = "ContainerLoadList.findByVesselCodeAndVoyage") 
    List<ContainerLoadList> findByVesselCodeAndVoyage(@Param("vesselCode") String vesselCode,@Param("voyage") String voyage); 
} 

是你沒有使用@Query，爲findByVesselCodeAndVoyage提供另一個解決方案？

Answer 1

假設內部ContainerLoadList嵌入式鍵字段被稱爲pk，你可以試試這個：

List<ContainerLoadList> findByPkVesselCodeAndPkVoyage(String vesselCode, String voyage); 

欲瞭解更多信息，請查看Spring Data JPA Property Expressions documentation。