jpa 使用复合/依赖主键的实体持久性失败

bbuxkriu  于 2023-06-23  发布在  其他
关注(0)|答案(1)|浏览(135)

在Sping Boot 3.1（使用Spring Data JPA Starter）中，将实体与具有Composite键的子实体沿着保存失败。我有三个实体名为Invoice，Product和InvoiceItem。InvoiceItem没有自己的唯一键，而是使用invoice_id，product_id的复合键。现在我在应用程序中使用EmbeddedId技术对此进行建模。但是当我保存我的第一张发票时，我得到以下错误

Could not set value of type [java.lang.Long] : `info.fareez.goldin.entities.embeddables.InvoiceItemId.invoiceId` (setter)

我已经检查了所有字段，并与JPA规范和示例进行了比较。我还是无法解决这个问题。
注意：我也尝试了@IdClass技术，它在IdClass和Entity中有重复的字段名称，所以我想用EmbeddedId解决它
这里是代码，

发票：

@Getter
@Setter
@Builder
@NoArgsConstructor
@AllArgsConstructor
@Entity
public class Invoice {

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

    @ManyToOne
    @JoinColumn(name = "customer_id", nullable = true)
    private Customer customer;

    @OneToMany(mappedBy = "invoice", cascade = CascadeType.PERSIST)
    private List<InvoiceItem> invoiceItems;

    private Date timestamp;

    private double price;
}

产品

@Builder
@Entity
@AllArgsConstructor
@NoArgsConstructor
@Setter
@Getter
public class Product {

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

    private String code;

    private String name;

    private double purity;

    private double weight;

    private int stock;

    @OneToMany(mappedBy = "product")
    private List<InventoryTransaction> inventoryTransactions;

}

InvoiceItem

@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
@Embeddable
public class InvoiceItemId {
    private Long invoiceId;
    private Long productId;
}

@Getter
@Setter
@Builder
@NoArgsConstructor
@AllArgsConstructor
@Entity
public class InvoiceItem {

    @EmbeddedId
    private InvoiceItemId invoiceItemId;

    @MapsId("invoiceId")
    @ManyToOne
    private Invoice invoice;

    @MapsId("productId")
    @OneToOne
    private Product product;

    private Double price;
}

当我试图用下面的代码保存一个新的发票时

List<InvoiceItem> invoiceItems = new ArrayList<>();

var invoice = Invoice.builder()
                 .customer(customer)
                 .timestamp(new Date()).build();

for (var itemDto : invoiceRequest.getInvoiceItems()) {
  // prepare invoice items here
  invoiceItems.add(
        InvoiceItem.builder()
            .invoice(invoice)
            .product(product.toProduct())
            // other fields
            .build())
}

invoice.setInvoiceItems(invoiceItems);
invoice.setPrice(totalPrice);

invoiceRepository.save(invoice);

我得到以下错误

Caused by: org.hibernate.PropertyAccessException: Could not set value of type [java.lang.Long] : `info.fareez.goldin.entities.embeddables.InvoiceItemId.invoiceId` (setter)
    at org.hibernate.property.access.spi.SetterFieldImpl.set(SetterFieldImpl.java:81) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.mapping.Component$ValueGenerationPlan.execute(Component.java:538) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.id.CompositeNestedGeneratedValueGenerator.generate(CompositeNestedGeneratedValueGenerator.java:113) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:114) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:184) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:129) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:118) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:779) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:727) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.engine.spi.CascadingActions$7.cascade(CascadingActions.java:301) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.engine.spi.CascadingActions$7.cascade(CascadingActions.java:291) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.engine.internal.Cascade.cascadeToOne(Cascade.java:513) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:434) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:220) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.engine.internal.Cascade.cascadeCollectionElements(Cascade.java:547) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.engine.internal.Cascade.cascadeCollection(Cascade.java:477) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:437) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:220) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.engine.internal.Cascade.cascade(Cascade.java:153) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.cascadeAfterSave(AbstractSaveEventListener.java:474) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:298) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:192) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:122) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:184) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:129) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:53) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:107) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:737) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:721) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[na:na]
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
    at java.base/java.lang.reflect.Method.invoke(Method.java:568) ~[na:na]
    at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:311) ~[spring-orm-6.0.7.jar:6.0.7]
    at jdk.proxy3/jdk.proxy3.$Proxy122.persist(Unknown Source) ~[na:na]
    at org.springframework.data.jpa.repository.support.SimpleJpaRepository.save(SimpleJpaRepository.java:613) ~[spring-data-jpa-3.0.4.jar:3.0.4]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[na:na]
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
    at java.base/java.lang.reflect.Method.invoke(Method.java:568) ~[na:na]
    at org.springframework.data.repository.core.support.RepositoryMethodInvoker$RepositoryFragmentMethodInvoker.lambda$new$0(RepositoryMethodInvoker.java:288) ~[spring-data-commons-3.0.4.jar:3.0.4]
    at org.springframework.data.repository.core.support.RepositoryMethodInvoker.doInvoke(RepositoryMethodInvoker.java:136) ~[spring-data-commons-3.0.4.jar:3.0.4]
    at org.springframework.data.repository.core.support.RepositoryMethodInvoker.invoke(RepositoryMethodInvoker.java:120) ~[spring-data-commons-3.0.4.jar:3.0.4]
    at org.springframework.data.repository.core.support.RepositoryComposition$RepositoryFragments.invoke(RepositoryComposition.java:516) ~[spring-data-commons-3.0.4.jar:3.0.4]
    at org.springframework.data.repository.core.support.RepositoryComposition.invoke(RepositoryComposition.java:285) ~[spring-data-commons-3.0.4.jar:3.0.4]
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$ImplementationMethodExecutionInterceptor.invoke(RepositoryFactorySupport.java:628) ~[spring-data-commons-3.0.4.jar:3.0.4]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184) ~[spring-aop-6.0.7.jar:6.0.7]
    at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.doInvoke(QueryExecutorMethodInterceptor.java:168) ~[spring-data-commons-3.0.4.jar:3.0.4]
    at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.invoke(QueryExecutorMethodInterceptor.java:143) ~[spring-data-commons-3.0.4.jar:3.0.4]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184) ~[spring-aop-6.0.7.jar:6.0.7]
    at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:77) ~[spring-data-commons-3.0.4.jar:3.0.4]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184) ~[spring-aop-6.0.7.jar:6.0.7]
    at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123) ~[spring-tx-6.0.7.jar:6.0.7]
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:391) ~[spring-tx-6.0.7.jar:6.0.7]
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) ~[spring-tx-6.0.7.jar:6.0.7]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184) ~[spring-aop-6.0.7.jar:6.0.7]
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:137) ~[spring-tx-6.0.7.jar:6.0.7]
    ... 35 common frames omitted
Caused by: java.lang.NullPointerException: Cannot invoke "Object.getClass()" because "o" is null
jpa

1条答案

按热度按时间
k3bvogb1

k3bvogb11#

我发现下面的方法奏效了。
遗憾的是，我必须先持久化Invoice，然后分别持久化InvoiceItems，以便能够访问invoiceId。lombok Builder也没有正确填充@EmbeddedId。

List<InvoiceItem> invoiceItems = new ArrayList<>();

var invoice = Invoice.builder()
                 .customer(customer)
                 .timestamp(new Date()).build();
        
invoice = invoiceRepository.save(invoice); // to get the invoiceId

for (var itemDto : invoiceRequest.getInvoiceItems()) {
  // prepare invoice items here
    InvoiceItemId invoiceItemId = new InvoiceItemId(invoice.getId(), product.getId());
    InvoiceItem invoiceItem = new InvoiceItem(invoiceItemId , invoice, product, price );

  invoiceItems.add(
        invoiceItem )
}

invoice.setInvoiceItems(invoiceItems);
invoice.setPrice(totalPrice);

invoiceRepository.save(invoice);

我还必须将invoiceItems设置为CascadeType.ALL

@OneToMany(mappedBy = "invoice", cascade = CascadeType.ALL)
private List<InvoiceItem> invoiceItems;
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