Spring Data Envers Entity 不能为空

Question

假设我们审计了具有@OneToOne 关系的实体：

@Entity
@Audited
@Table(name = "product")
public class Product {
    @Id
    @GeneratedValue
    @Column(name = "id")
    private Long id;
    @Column(name = "name")
    private String name;
    @Column(name = "active")
    private boolean active;
    @OneToOne(mappedBy="product", cascade = CascadeType.ALL, fetch = FetchType.LAZY, orphanRemoval = true)
    private ProductPrice productPrice;
}

@Audited
@Entity
@Table(name = "product_price")
public class ProductPrice {
    @Id
    @GeneratedValue
    @Column(name = "id")
    private Long id;
    @Column(name = "amount")
    private Long amount;
    @OneToOne(optional = false, fetch = FetchType.LAZY)
    @JoinColumn(name = "product_id", nullable = false)
    private Product product;
}

并且 RevisionService 具有获取修订和查找更改的方法：

@Transactional
public Page<Revision<Long, Product>> getGroupRevisions(Long productId, int page) {
    Page<Revision<Long, Product>> revisions = productRepository.findRevisions(productId, PageRequest.of(page, 5, RevisionSort.desc()));
    Long priceId = revisions.getContent().get(0).getEntity().getProductPrice().getId();
    Page<Revision<Long, ProductPrice>> priceRevisions = productPriceRepository.findRevisions(priceId, PageRequest.of(page, 5, RevisionSort.desc()));
    return revisions;
}

现在，如果我创建新的 Product 和 ProductPrice 记录，然后对 Product 进行 5 次以上的更改（将生成 5 个 RevInfo 记录），我会得到异常：

java.lang.IllegalArgumentException: Entity must not be null!
    at org.springframework.util.Assert.notNull(Assert.java:198)
    at org.springframework.data.history.AnnotationRevisionMetadata.<init>(AnnotationRevisionMetadata.java:55)
    at org.springframework.data.envers.repository.support.EnversRevisionRepositoryImpl.getRevisionMetadata(EnversRevisionRepositoryImpl.java:237)
    at org.springframework.data.envers.repository.support.EnversRevisionRepositoryImpl.lambda$toRevisions(EnversRevisionRepositoryImpl.java:223)
    at java.base/java.util.stream.ReferencePipeline.accept(ReferencePipeline.java:195)
    at java.base/java.util.HashMap$EntrySpliterator.forEachRemaining(HashMap.java:1837)
    at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
    at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
    at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913)
    at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
    at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578)
    at org.springframework.data.envers.repository.support.EnversRevisionRepositoryImpl.toRevisions(EnversRevisionRepositoryImpl.java:226)
    at org.springframework.data.envers.repository.support.EnversRevisionRepositoryImpl.getEntitiesForRevisions(EnversRevisionRepositoryImpl.java:196)
    at org.springframework.data.envers.repository.support.EnversRevisionRepositoryImpl.findRevisions(EnversRevisionRepositoryImpl.java:163)

调试后我看到这个 "null" 实体被 Hibernate 代理并且 Spring Data envers 无法解析此时的修订号： Number revNo = this.enversService.getRevisionInfoNumberReader().getRevisionNumber(revision);

这里是link到github的测试项目：https://github.com/aquariusmaster/spring-data-envers-bug

所以我的问题是这是 Spring Data Envers 中的错误，还是我在配置中遗漏了什么？

Answer 1

如spring-data-envers team回复，升级boot版本到2.3。1.RELEASE解决问题： https://github.com/spring-projects/spring-data-envers/issues/34#issuecomment-651681687

Spring Data Envers Entity 不能为空

Spring Data Envers Entity must not be null

hibernate-envers

spring-data-envers