hibernate - 带有非键连接列的 Spring boot 多对一不起作用

Question

我有一个包含两个实体的旧数据库设计

@Entity
@Table(name = "tblRouters")
public class Router implements Serializable {

    private static final long serialVersionUID = 1L;

    @Id
    @Column(name = "nRouterID")
    private Integer routerId;

    @Column(name = "strRouterName")
    private String routerName;

    @Column(name = "strRouterIP")
    private String routerIp;

    @Column(name = "strLastAutomaticCheckTime")
    private String lastCheckTime;

    @Column(name = "nSupportedSnmpVersion")
    private String protocol;

    @OneToMany(fetch =FetchType.EAGER)
    @JoinColumn(name="strIpAddr", referencedColumnName="strRouterIP")
    //@JoinColumn(name="strIpAddr")
    private Set<RouterDetail> routerDetails;
cons, getters setters....

和 RouterDetail 类

@Entity
@Table(name = "tblRouter_Detail")
public class RouterDetail implements Serializable {


    private static final long serialVersionUID = 1L;

    @Id
    @Column(name = "nObjectId")
    private Integer objectId;

    @Column(name = "cObjectType")
    private Character objectType;

    @Column(name = "strSysName")
    private String systemName;

    @Column(name = "strDescription")
    private String systemDescription;

    @ManyToOne()
    @JoinColumn(name="strRouterIP")
    private Router router;

经过一番努力，我设法创建了正确的映射，使我能够在 Router 类中的 @JoinColumn 中使用引用的ColumnName 后执行查询，但是我需要查询急切地获取数据，所以我去更改了这一点(在 Router 类上)

@OneToMany()

至

@OneToMany(fetch =FetchType.EAGER)

这破坏了我的代码，但出现以下异常

Caused by: com.microsoft.sqlserver.jdbc.SQLServerException: Invalid column name 'strRouterIP'.

我使用 spring boot 1.5.3 和此接口(interface)来执行查询

public interface RouterService extends CrudRepository<Router, Integer> {

    public Iterable<Router> findAllByRouterDetailsObjectType(Character objectType);


}

这个映射有什么问题？

Answer 1

我能够通过将 RouterDetail join 列修改为此来解决此问题

@JoinColumn(name ="strIpAddr", referencedColumnName="strRouterIP")