我有一个与另一个实体有关系的实体:
public class MyEntity {
@Id
@GeneratedValue
@Column(name = "id", nullable = false)
private UUID id;
@Column(name = "deleted", nullable = false)
private Boolean deleted = false;
@ManyToMany
@JoinTable(name = "feature_assignment",
joinColumns = @JoinColumn(name = "my_entity_id"),
inverseJoinColumns = @JoinColumn(name = "feature_id"))
private List<MyEntityFeature> myEntityFeatures;
我有一个完美运行的存储库:
public interface MyEntityRepository extends JpaRepository<MyEntity, UUID>,
JpaSpecificationExecutor<MyEntity> {
Optional<MyEntity> findByIdAndDeletedIsFalse(UUID id);
}
但是当我在我的存储库中扩展 EntityGraphJpaSpecificationExecutor 时,它似乎无法识别没有实体图的以前的存储库方法,即使存储库仍在实现 findById 方法。我得到以下异常:
Caused by: java.lang.IllegalArgumentException: Failed to create query for method public abstract java.util.Optional com.cosium.spring.data.jpa.entity.graph.repository.EntityGraphJpaSpecificationExecutor.findOne(org.springframework.data.jpa.domain.Specification,com.cosium.spring.data.jpa.entity.graph.domain.EntityGraph)! No property findOne found for type MyEntity!
at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:96) ~[spring-data-jpa-2.6.1.jar:2.6.1]
at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:113) ~[spring-data-jpa-2.6.1.jar:2.6.1]
at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateIfNotFoundQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:254) ~[spring-data-jpa-2.6.1.jar:2.6.1]
at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$AbstractQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:87) ~[spring-data-jpa-2.6.1.jar:2.6.1]
at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.lookupQuery(QueryExecutorMethodInterceptor.java:102) ~[spring-data-commons-2.6.1.jar:2.6.1]
... 57 common frames omitted
Caused by: org.springframework.data.mapping.PropertyReferenceException: No property findOne found for type MyEntity!
at org.springframework.data.mapping.PropertyPath.<init>(PropertyPath.java:90) ~[spring-data-commons-2.6.1.jar:2.6.1]
at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:437) ~[spring-data-commons-2.6.1.jar:2.6.1]
at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:413) ~[spring-data-commons-2.6.1.jar:2.6.1]
at org.springframework.data.mapping.PropertyPath.lambda$from$0(PropertyPath.java:366) ~[spring-data-commons-2.6.1.jar:2.6.1]
at java.base/java.util.concurrent.ConcurrentMap.computeIfAbsent(ConcurrentMap.java:330) ~[na:na]
at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:348) ~[spring-data-commons-2.6.1.jar:2.6.1]
at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:331) ~[spring-data-commons-2.6.1.jar:2.6.1]
at org.springframework.data.repository.query.parser.Part.<init>(Part.java:81) ~[spring-data-commons-2.6.1.jar:2.6.1]
at org.springframework.data.repository.query.parser.PartTree$OrPart.lambda$new$0(PartTree.java:249) ~[spring-data-commons-2.6.1.jar:2.6.1]
at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197) ~[na:na]
at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) ~[na:na]
at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:992) ~[na:na]
at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) ~[na:na]
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) ~[na:na]
at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:921) ~[na:na]
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:na]
at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:682) ~[na:na]
at org.springframework.data.repository.query.parser.PartTree$OrPart.<init>(PartTree.java:250) ~[spring-data-commons-2.6.1.jar:2.6.1]
at org.springframework.data.repository.query.parser.PartTree$Predicate.lambda$new$0(PartTree.java:383) ~[spring-data-commons-2.6.1.jar:2.6.1]
at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197) ~[na:na]
at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179) ~[na:na]
at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:992) ~[na:na]
at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) ~[na:na]
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) ~[na:na]
at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:921) ~[na:na]
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:na]
at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:682) ~[na:na]
at org.springframework.data.repository.query.parser.PartTree$Predicate.<init>(PartTree.java:384) ~[spring-data-commons-2.6.1.jar:2.6.1]
at org.springframework.data.repository.query.parser.PartTree.<init>(PartTree.java:92) ~[spring-data-commons-2.6.1.jar:2.6.1]
at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:89) ~[spring-data-jpa-2.6.1.jar:2.6.1]
... 61 common frames omitted
我的 pom.xml 包含以下依赖项:
<dependency>
<groupId>com.cosium.spring.data</groupId>
<artifactId>spring-data-jpa-entity-graph</artifactId>
<version>2.5.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
谁能解释为什么会这样?我该如何解决这个错误?实现EntityGraphJpaSpecificationExecutor后是否必须重写findOne方法?