Question

我正在使用springboot + jpa + hibernate设计货币对表的实体。数据库是postgres。架构如下-

DDL货币

CREATE TABLE currency (
    id bigint NOT NULL PRIMARY KEY,
    entity_id VARCHAR(255) NOT NULL UNIQUE,
    code VARCHAR(255),
    name VARCHAR(255),
    description VARCHAR(255),
    denomination_code VARCHAR(255),
    denomination_name VARCHAR(255),
    denomination_description VARCHAR(255),
    denomination_units integer,
    status VARCHAR(255)
);

currency_pair的DDL

CREATE TABLE currency_pair (
    id bigint NOT NULL PRIMARY KEY,
    entity_id VARCHAR(255) NOT NULL UNIQUE,
    code VARCHAR(50) NOT NULL,
    name VARCHAR(250) NOT NULL,
    description VARCHAR(500) NOT NULL,
    base_currency_id VARCHAR(255) NOT NULL REFERENCES currency(entity_id),
    quote_currency_id VARCHAR(255) NOT NULL REFERENCES currency(entity_id),
    status VARCHAR(255),
);

我的实体类如下：-

货币实体-

@Entity
@Table(name = "currency")
public class Currency implements Serializable {

    private static final long serialVersionUID = 1L;

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @NaturalId
    @Column(nullable = false)
    private String entityId;

    @Column(nullable = false)
    private String code;

    @Column(nullable = false)
    private String name;

    @Column(nullable = false)
    private String description;

    @Column(nullable = false)
    private String denominationCode;

    @Column(nullable = false)
    private String denominationName;

    @Column(nullable = false)
    private String denominationDescription;

    @Column(nullable = false)
    private Integer denominationUnits;

    @Column(nullable = false)
    private String mask;

    @Column(nullable = false)
    private String status;

    /* getters and setters */
}

货币对实体-

@Entity
@Table(name = "currency_pair")
public class CurrencyPair implements Serializable {

    private static final long serialVersionUID = 1L;

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @NaturalId
    @Column(nullable = false)
    private String entityId;

    @Column(nullable = false)
    private String code;

    @Column(nullable = false)
    private String name;

    @Column(nullable = false)
    private String description;

    @OneToOne
    @JoinColumn(name = "base_currency_id", referencedColumnName = "entity_id")
    private Currency baseCurrency;

    @OneToOne
    @JoinColumn(name = "quote_currency_id", referencedColumnName = "entity_id")
    private Currency quoteCurrency;

    @Column(nullable = false)
    private String status;

    /* Getters and setters */
}

base_currency_id表中的

quote_currency_id和currency_pair指entity_id表中的非主键列currency。

当我启动springboot应用程序时，出现以下错误-

原因：org.hibernate.MappingException：无法找到具有以下内容的列逻辑名称：org.hibernate.mapping.Table（currency）中的 entity_id 其相关的超表和辅助表位于 org.hibernate.cfg.Ejb3JoinColumn.checkReferencedColumnsType（Ejb3JoinColumn.java:832）〜[hibernate-core-5.3.10.Final.jar：5.3.10.Final]在 org.hibernate.cfg.BinderHelper.createSyntheticPropertyReference（BinderHelper.java:256）〜[hibernate-core-5.3.10.Final.jar：5.3.10.Final]在 org.hibernate.cfg.ToOneFkSecondPass.doSecondPass（ToOneFkSecondPass.java:101）〜[hibernate-core-5.3.10.Final.jar：5.3.10.Final]在 org.hibernate.boot.internal.InFlightMetadataCollectorImpl.processEndOfQueue（InFlightMetadataCollectorImpl.java:1827）〜[hibernate-core-5.3.10.Final.jar：5.3.10.Final]在 org.hibernate.boot.internal.InFlightMetadataCollectorImpl.processFkSecondPassesInOrder（InFlightMetadataCollectorImpl.java:1771）〜[hibernate-core-5.3.10.Final.jar：5.3.10.Final]在 org.hibernate.boot.internal.InFlightMetadataCollectorImpl.processSecondPasses（InFlightMetadataCollectorImpl.java:1658）〜[hibernate-core-5.3.10.Final.jar：5.3.10.Final]在 org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete（MetadataBuildingProcess.java:287）〜[hibernate-core-5.3.10.Final.jar：5.3.10.Final]在 org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata（EntityManagerFactoryBuilderImpl.java:904）〜[hibernate-core-5.3.10.Final.jar：5.3.10.Final]在 org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build（EntityManagerFactoryBuilderImpl.java:935）〜[hibernate-core-5.3.10.Final.jar：5.3.10.Final]在 org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory（SpringHibernateJpaPersistenceProvider.java:57）〜[spring-orm-5.1.8.RELEASE.jar：5.1.8.RELEASE]在 org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory（LocalContainerEntityManagerFactoryBean.java:365）〜[spring-orm-5.1.8.RELEASE.jar：5.1.8.RELEASE]在 org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory（AbstractEntityManagerFactoryBean.java:390）〜[spring-orm-5.1.8.RELEASE.jar：5.1.8.RELEASE]在 org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet（AbstractEntityManagerFactoryBean.java:377）〜[spring-orm-5.1.8.RELEASE.jar：5.1.8.RELEASE]在 org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet（LocalContainerEntityManagerFactoryBean.java:341）〜[spring-orm-5.1.8.RELEASE.jar：5.1.8.RELEASE]在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods（AbstractAutowireCapableBeanFactory.java:1837）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE]在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean（AbstractAutowireCapableBeanFactory.java:1774）〜[spring-beans-5.1.8.RELEASE.jar：5.1.8.RELEASE] ... 95个通用框架省略

注意：我无法更改ddl查询，因此该怎么做才能修复实体类

Answer 1

找不到列entity_id，因为它在Currency表中定义为entityId

您可以通过在name类的entityId列上添加Currency属性来解决此问题：

@Entity
@Table(name = "currency")
public class Currency implements Serializable {

    // ...

    @NaturalId
    @Column(name="entity_id", nullable = false)
    private String entityId;

    // ...

Answer 2

由于您在referencedColumnName = "entity_id"中有CurrencyPair与货币有关。 在“货币”中，名称为与id_entity_id不匹配的entityId。您可以在Currency

中添加 name属性，如下所示

更改

@NaturalId
@Column(nullable = false)
private String entityId;

收件人

@NaturalId
@Column(name = "entity_id", nullable = false)
private String entityId;

带有非主键的JPA一对一显示无法找到具有逻辑名称错误的列

2 个答案: