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Hibernate/Envers 无法读取属性映射

2024-03-22

我无法使用连接表实现多对多关系（https://stackoverflow.com/a/7603036 https://stackoverflow.com/a/7603036 & https://en.wikibooks.org/wiki/Java_Persistence/ManyToMany#Mapping_a_Join_Table_with_Additional_Columns https://en.wikibooks.org/wiki/Java_Persistence/ManyToMany#Mapping_a_Join_Table_with_Additional_Columns）。当我尝试重现它时，持久性单元无法构建 EntityManagerFactory。恩弗斯似乎无法读取属性映射，尽管它对我来说看起来不错。我究竟做错了什么？使用额外列（和 Envers）实现多对多关系的正确方法是什么？

产品.java

@Entity
@Audited
public class Product extends UserModel {
...
    @OneToMany(mappedBy = "product", orphanRemoval = true, cascade = CascadeType.ALL, fetch = FetchType.EAGER)
    public List<ProductForm> forms = new ArrayList<ProductForm>();
...
}

表单.java

@Entity
@Audited
public class Form extends UserModel {
...
    @OneToMany(mappedBy = "form", fetch = FetchType.LAZY)
    public List<ProductForm> products = new ArrayList<ProductForm>();
...
}

产品表单.java

@Entity
@Table(name = "Product_Form")
@IdClass(ProductForm.ProductFormId.class)
public class ProductForm {
    @Id
    @JoinColumn(name = "product_id")
    @ManyToOne
    public Product product;

    @Id
    @JoinColumn(name = "form_id")
    @ManyToOne
    public Form form;

    public ProductForm(Product product, Form form) {
        this.product = product;
        this.form = form;
    }

    @Embeddable
    @SuppressWarnings("serial")
    public class ProductFormId implements Serializable {
        @Column(name = "product_id")
        public Long product;

        @Column(name = "form_id")
        public Long form;
    }
}

堆栈跟踪

play.api.UnexpectedException: Unexpected exception[PersistenceException: [PersistenceUnit: defaultPersistenceUnit] Unable to build EntityManagerFactory]
    at play.core.ReloadableApplication$$anonfun$get$1$$anonfun$1.apply(ApplicationProvider.scala:142) ~[play_2.10-2.1.1.jar:2.1.1]
    at play.core.ReloadableApplication$$anonfun$get$1$$anonfun$1.apply(ApplicationProvider.scala:106) ~[play_2.10-2.1.1.jar:2.1.1]
    at scala.Option.map(Option.scala:145) ~[scala-library.jar:na]
    at play.core.ReloadableApplication$$anonfun$get$1.apply(ApplicationProvider.scala:106) ~[play_2.10-2.1.1.jar:2.1.1]
    at play.core.ReloadableApplication$$anonfun$get$1.apply(ApplicationProvider.scala:104) ~[play_2.10-2.1.1.jar:2.1.1]
    at scala.util.Either$RightProjection.flatMap(Either.scala:523) [scala-library.jar:na]
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: defaultPersistenceUnit] Unable to build EntityManagerFactory
    at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:930) ~[hibernate-entitymanager-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:904) ~[hibernate-entitymanager-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:72) ~[hibernate-entitymanager-4.2.0.Final.jar:4.2.0.Final]
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:63) ~[hibernate-jpa-2.0-api-1.0.1.Final.jar:1.0.1.Final]
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:47) ~[hibernate-jpa-2.0-api-1.0.1.Final.jar:1.0.1.Final]
    at play.db.jpa.JPAPlugin.onStart(JPAPlugin.java:35) ~[play-java-jpa_2.10-2.1.1.jar:2.1.1]
Caused by: org.hibernate.MappingException: Unable to read the mapped by attribute for products in models.ProductForm!
    at org.hibernate.envers.configuration.metadata.CollectionMetadataGenerator.getMappedBy(CollectionMetadataGenerator.java:642) ~[hibernate-envers-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.envers.configuration.metadata.CollectionMetadataGenerator.addOneToManyAttached(CollectionMetadataGenerator.java:187) ~[hibernate-envers-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.envers.configuration.metadata.CollectionMetadataGenerator.addCollection(CollectionMetadataGenerator.java:169) ~[hibernate-envers-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.envers.configuration.metadata.AuditMetadataGenerator.addValueInSecondPass(AuditMetadataGenerator.java:223) ~[hibernate-envers-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.envers.configuration.metadata.AuditMetadataGenerator.addValue(AuditMetadataGenerator.java:245) ~[hibernate-envers-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.envers.configuration.metadata.AuditMetadataGenerator.addProperties(AuditMetadataGenerator.java:258) ~[hibernate-envers-4.2.0.Final.jar:4.2.0.Final]

PS我尝试添加@AuditMappedBy(mappedBy = "product")至产品：

play.api.UnexpectedException: Unexpected exception[PersistenceException: [PersistenceUnit: defaultPersistenceUnit] Unable to build EntityManagerFactory]
    at play.core.ReloadableApplication$$anonfun$get$1$$anonfun$1.apply(ApplicationProvider.scala:142) ~[play_2.10-2.1.1.jar:2.1.1]
    at play.core.ReloadableApplication$$anonfun$get$1$$anonfun$1.apply(ApplicationProvider.scala:106) ~[play_2.10-2.1.1.jar:2.1.1]
    at scala.Option.map(Option.scala:145) ~[scala-library.jar:na]
    at play.core.ReloadableApplication$$anonfun$get$1.apply(ApplicationProvider.scala:106) ~[play_2.10-2.1.1.jar:2.1.1]
    at play.core.ReloadableApplication$$anonfun$get$1.apply(ApplicationProvider.scala:104) ~[play_2.10-2.1.1.jar:2.1.1]
    at scala.util.Either$RightProjection.flatMap(Either.scala:523) [scala-library.jar:na]
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: defaultPersistenceUnit] Unable to build EntityManagerFactory
    at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:930) ~[hibernate-entitymanager-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:904) ~[hibernate-entitymanager-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:72) ~[hibernate-entitymanager-4.2.0.Final.jar:4.2.0.Final]
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:63) ~[hibernate-jpa-2.0-api-1.0.1.Final.jar:1.0.1.Final]
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:47) ~[hibernate-jpa-2.0-api-1.0.1.Final.jar:1.0.1.Final]
    at play.db.jpa.JPAPlugin.onStart(JPAPlugin.java:35) ~[play-java-jpa_2.10-2.1.1.jar:2.1.1]
Caused by: org.hibernate.MappingException: @AuditMappedBy points to a property that doesn't exist: models.ProductForm.product
    at org.hibernate.envers.configuration.ClassesAuditingData.forcePropertyInsertable(ClassesAuditingData.java:84) ~[hibernate-envers-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.envers.configuration.ClassesAuditingData.updateCalculatedFields(ClassesAuditingData.java:70) ~[hibernate-envers-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.envers.configuration.EntitiesConfigurator.configure(EntitiesConfigurator.java:85) ~[hibernate-envers-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.envers.configuration.AuditConfiguration.<init>(AuditConfiguration.java:114) ~[hibernate-envers-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.envers.configuration.AuditConfiguration.getFor(AuditConfiguration.java:164) ~[hibernate-envers-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.envers.event.EnversIntegrator.integrate(EnversIntegrator.java:64) ~[hibernate-envers-4.2.0.Final.jar:4.2.0.Final]

Edit

当我添加@Audited to ProductForm仍然得到相同的错误，下面是最新的堆栈跟踪。

play.api.UnexpectedException: Unexpected exception[PersistenceException: [PersistenceUnit: defaultPersistenceUnit] Unable to build EntityManagerFactory]
    at play.core.ReloadableApplication$$anonfun$get$1$$anonfun$1.apply(ApplicationProvider.scala:142) ~[play_2.10-2.1.1.jar:2.1.1]
    at play.core.ReloadableApplication$$anonfun$get$1$$anonfun$1.apply(ApplicationProvider.scala:106) ~[play_2.10-2.1.1.jar:2.1.1]
    at scala.Option.map(Option.scala:145) ~[scala-library.jar:na]
    at play.core.ReloadableApplication$$anonfun$get$1.apply(ApplicationProvider.scala:106) ~[play_2.10-2.1.1.jar:2.1.1]
    at play.core.ReloadableApplication$$anonfun$get$1.apply(ApplicationProvider.scala:104) ~[play_2.10-2.1.1.jar:2.1.1]
    at scala.util.Either$RightProjection.flatMap(Either.scala:523) [scala-library.jar:na]
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: defaultPersistenceUnit] Unable to build EntityManagerFactory
    at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:930) ~[hibernate-entitymanager-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:904) ~[hibernate-entitymanager-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:72) ~[hibernate-entitymanager-4.2.0.Final.jar:4.2.0.Final]
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:63) ~[hibernate-jpa-2.0-api-1.0.1.Final.jar:1.0.1.Final]
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:47) ~[hibernate-jpa-2.0-api-1.0.1.Final.jar:1.0.1.Final]
    at play.db.jpa.JPAPlugin.onStart(JPAPlugin.java:35) ~[play-java-jpa_2.10-2.1.1.jar:2.1.1]
Caused by: org.hibernate.MappingException: Unable to read the mapped by attribute for products in models.ProductForm!
    at org.hibernate.envers.configuration.metadata.CollectionMetadataGenerator.getMappedBy(CollectionMetadataGenerator.java:642) ~[hibernate-envers-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.envers.configuration.metadata.CollectionMetadataGenerator.addOneToManyAttached(CollectionMetadataGenerator.java:187) ~[hibernate-envers-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.envers.configuration.metadata.CollectionMetadataGenerator.addCollection(CollectionMetadataGenerator.java:169) ~[hibernate-envers-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.envers.configuration.metadata.AuditMetadataGenerator.addValueInSecondPass(AuditMetadataGenerator.java:223) ~[hibernate-envers-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.envers.configuration.metadata.AuditMetadataGenerator.addValue(AuditMetadataGenerator.java:245) ~[hibernate-envers-4.2.0.Final.jar:4.2.0.Final]
    at org.hibernate.envers.configuration.metadata.AuditMetadataGenerator.addProperties(AuditMetadataGenerator.java:258) ~[hibernate-envers-4.2.0.Final.jar:4.2.0.Final]

如果您的问题是由复合键引起的，请在可能的情况下将您的 hibernate 版本更新到 5.2.2。因为这个bug在这个版本中已经被修复了。

See: https://hibernate.atlassian.net/browse/HHH-7625 https://hibernate.atlassian.net/browse/HHH-7625

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