问题描述
在我的项目中，我有一个Kotlin（1.3.72）Spring Boot（2.3.3.RELEASE）JPA支持的存储库，该存储库运行良好，Spring应用程序上下文正常启动，项目通过了所有测试，等等。等等：
@Repository
interface MappingRepository : CrudRepository<RoutingMapping,Long> {
fun findByCompanyId(companyId: Long): RoutingMapping?
}
当我像这样将其切换为扩展org.springframework.data.repository.kotlin.CoroutineCrudRepository而不更改其他任何内容时：
@Repository
interface MappingRepository : CoroutineCrudRepository<RoutingMapping,Long> {
fun findByCompanyId(companyId: Long): RoutingMapping?
}
启动Spring应用程序上下文在启动时失败，并引发以下内容：
Caused by: org.springframework.data.mapping.PropertyReferenceException:
No property count found for type RoutingMapping!`
这是一个令人困惑的异常，因为RoutingMapping是映射的@Entity。我不清楚我是否@Entity方面缺少什么，或者是我对如何使用org.springframework.data.repository.kotlin.CoroutineCrudRepository的误解。
Caused by: org.springframework.data.mapping.PropertyReferenceException: No property count found for type RoutingMapping!
at org.springframework.data.mapping.PropertyPath.<init>(PropertyPath.java:94)
at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:382)
at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:358)
at org.springframework.data.mapping.PropertyPath.lambda$from$0(PropertyPath.java:311)
at java.base/java.util.concurrent.ConcurrentMap.computeIfAbsent(ConcurrentMap.java:330)
at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:293)
at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:276)
at org.springframework.data.repository.query.parser.Part.<init>(Part.java:82)
at org.springframework.data.repository.query.parser.PartTree$OrPart.lambda$new$0(PartTree.java:251)
at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)
at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
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$ReduceOp.evaluateSequential(ReduceOps.java:913)
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578)
at org.springframework.data.repository.query.parser.PartTree$OrPart.<init>(PartTree.java:252)
at org.springframework.data.repository.query.parser.PartTree$Predicate.lambda$new$0(PartTree.java:381)
at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)
at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
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$ReduceOp.evaluateSequential(ReduceOps.java:913)
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578)
at org.springframework.data.repository.query.parser.PartTree$Predicate.<init>(PartTree.java:382)
at org.springframework.data.repository.query.parser.PartTree.<init>(PartTree.java:94)
at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:89)
... 137 more
解决方法
暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！
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