为什么我的带有@EmbeddedId 的实体不能在其对应的@Embeddable 类中使用LocalDateTime？

【问题标题】：Why can't my entity with an @EmbeddedId use the LocalDateTime in it's corresponding @Embeddable Class?为什么我的带有@EmbeddedId 的实体不能在其对应的@Embeddable 类中使用LocalDateTime？
【发布时间】：2020-01-14 07:05:18
【问题描述】：

我实现了一个使用@EmbeddedId 的实体。 @Embeddable - 类将数据类型 LocalDateTime 用于两个组合键属性之一。当我通过控制器收集严重属性时，我收到java.util.Date 预期的错误。 我正在使用：kotlin("plugin.jpa") version "1.2.71"Gradle: org.hibernate:hibernate-core:5.3.10.Final 和 MySQL - Server

我设法确定在我实现复合键时发生了错误。

更新：当我创建一个完全不同的实体（也使用 LocalDateTime）时会发生错误。如果我摆脱了复合键（并且只对@Id 使用一个属性），则不会出现错误。但是一旦我实现复合键，就会发生错误。这让我很困惑，因为我不知道为什么复合键会影响其他实体

import java.io.Serializable
import javax.persistence.EmbeddedId
import javax.persistence.Entity

@Entity(name = "entity")
class SensorHistory(@EmbeddedId val entityId: EntityId,
                    val value: Float) : Serializable {
}

import java.io.Serializable
import java.time.LocalDateTime
import javax.persistence.Embeddable

@Embeddable
class EntityId(val timestamp: LocalDateTime,
               val sensor_id: Long) :
        Serializable {
}

这是控制器正在使用的存储库的一部分：

@Query("SELECT COALESCE(SUM(value),0) FROM entity WHERE sensor_id = ?1 AND timestamp > ?2")
    fun countLitersSince(sensor_id: Long?, since: LocalDateTime): Float

这是堆栈跟踪：

org.springframework.dao.InvalidDataAccessApiUsageException: Parameter value [2000-01-01T12:00:01] did not match expected type [java.util.Date (n/a)]; nested exception is java.lang.IllegalArgumentException: Parameter value [2000-01-01T12:00:01] did not match expected type [java.util.Date (n/a)]

    at org.springframework.orm.jpa.EntityManagerFactoryUtils.convertJpaAccessExceptionIfPossible(EntityManagerFactoryUtils.java:373)
    at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:255)
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:527)
    at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:61)
    at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:242)
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:153)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:144)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$ExposeRepositoryInvocationInterceptor.invoke(CrudMethodMetadataPostProcessor.java:364)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:93)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    at org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:61)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    at org.springframework.data.repository.core.support.MethodInvocationValidator.invoke(MethodInvocationValidator.java:99)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212)
    at com.sun.proxy.$Proxy109.countLitersSince(Unknown Source)
    at de.iteratec.sodadispenser.controller.SodaDispenserController.getAllSodaDispensers(SodaDispenserController.kt:39)
    at de.iteratec.sodadispenser.tests.controller.SodaDispenserControllerTest.check(SodaDispenserControllerTest.kt:121)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:74)
    at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:84)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
    at org.junit.runners.Suite.runChild(Suite.java:128)
    at org.junit.runners.Suite.runChild(Suite.java:27)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
    at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: java.lang.IllegalArgumentException: Parameter value [2000-01-01T12:00:01] did not match expected type [java.util.Date (n/a)]
    at org.hibernate.query.spi.QueryParameterBindingValidator.validate(QueryParameterBindingValidator.java:54)
    at org.hibernate.query.spi.QueryParameterBindingValidator.validate(QueryParameterBindingValidator.java:27)
    at org.hibernate.query.internal.QueryParameterBindingImpl.validate(QueryParameterBindingImpl.java:90)
    at org.hibernate.query.internal.QueryParameterBindingImpl.setBindValue(QueryParameterBindingImpl.java:55)
    at org.hibernate.query.internal.AbstractProducedQuery.setParameter(AbstractProducedQuery.java:511)
    at org.hibernate.query.internal.AbstractProducedQuery.setParameter(AbstractProducedQuery.java:106)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at org.springframework.orm.jpa.SharedEntityManagerCreator$DeferredQueryInvocationHandler.invoke(SharedEntityManagerCreator.java:403)
    at com.sun.proxy.$Proxy126.setParameter(Unknown Source)
    at org.springframework.data.jpa.repository.query.QueryParameterSetter$NamedOrIndexedQueryParameterSetter.lambda$setParameter$5(QueryParameterSetter.java:124)
    at org.springframework.data.jpa.repository.query.QueryParameterSetter$ErrorHandling$1.execute(QueryParameterSetter.java:175)
    at org.springframework.data.jpa.repository.query.QueryParameterSetter$NamedOrIndexedQueryParameterSetter.setParameter(QueryParameterSetter.java:124)
    at org.springframework.data.jpa.repository.query.ParameterBinder.lambda$bind$0(ParameterBinder.java:79)
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1540)
    at java.base/java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1083)
    at org.springframework.data.jpa.repository.query.ParameterBinder.bind(ParameterBinder.java:79)
    at org.springframework.data.jpa.repository.query.ParameterBinder.bind(ParameterBinder.java:74)
    at org.springframework.data.jpa.repository.query.ParameterBinder.bindAndPrepare(ParameterBinder.java:96)
    at org.springframework.data.jpa.repository.query.AbstractStringBasedJpaQuery.doCreateQuery(AbstractStringBasedJpaQuery.java:93)
    at org.springframework.data.jpa.repository.query.AbstractJpaQuery.createQuery(AbstractJpaQuery.java:210)
    at org.springframework.data.jpa.repository.query.JpaQueryExecution$SingleEntityExecution.doExecute(JpaQueryExecution.java:221)
    at org.springframework.data.jpa.repository.query.JpaQueryExecution.execute(JpaQueryExecution.java:91)
    at org.springframework.data.jpa.repository.query.AbstractJpaQuery.doExecute(AbstractJpaQuery.java:136)
    at org.springframework.data.jpa.repository.query.AbstractJpaQuery.execute(AbstractJpaQuery.java:125)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:605)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.lambda$invoke$3(RepositoryFactorySupport.java:595)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:595)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:59)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:295)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:139)
    ... 54 more

【问题讨论】：

  • 我会说在你的数据库中你想要一个日期类型。
  • 另一个实体使用 LocalDateTime，我没有遇到任何问题。
  • 您确定错误出在这部分代码中吗？在您的错误中，我看到您没有使用对 java.util.Date 的引用。我还在您的堆栈跟踪中看到了对countLitersSince 的引用。你能显示那个代码吗？
  • @g00glen00b 我已将其添加到原始帖子中
  • 感谢您添加代码。你不应该把你的查询改成SELECT COALESCE(SUM(value),0) FROM entity WHERE entity.entityId.sensor_id = ?1 AND entity.entityId.timestamp > ?2吗？

标签： hibernate spring-boot jpa kotlin


【解决方案1】：

您问题中的堆栈跟踪表明错误在您的存储库调用com.sun.proxy.$Proxy109.countLitersSince 中。原因是查询无效，因为timestamp 和sensor_id 以这种方式存在。

如果您使用 Spring Data JPA，则默认查询语言是 JPQL，它代表 JPA 查询语言。这意味着查询应该遵循您的实体声明：

  • 虽然您的实体名称通常为 SensorHistory，但您对其进行了重命名，因此应该像以前一样从 entity 查询。
  • 此外，它使用了更加面向对象的方法。由于value 是entity 的一部分，它应该变成entity.value。
  • sensor_id 和 timestamp 也应如此。这两个字段都是 entity.entityId 的一部分，也应该被替换。
@Query("select coalesce(sum(entity.value), 0) from entity where entity.entityId.sensor_id = ?1 and entity.entityId.timestamp > ?2")
fun countLitersSince(sensor_id: Long?, since: LocalDateTime): Float

或者，如果您想使用纯 SQL，您可以将 nativeQuery 设置为 true：

@Query(value = "SELECT COALESCE(SUM(value),0) FROM entity WHERE sensor_id = ?1 AND timestamp > ?2", nativeQuery = true) // Add nativeQuery
fun countLitersSince(sensor_id: Long?, since: LocalDateTime): Float

我不确定为什么这个错误没有更清楚。通常它应该抛出一个异常，告诉你它不知道如何处理“entity”、“timestamp”或“sensor_id”，但它设法找到一个名为entity 的实体，其类型为timestamp java.util.Date.

从 cmets 看来，您将实体命名为 StatusHistory，而您的表命名为 status_history。如果您想使用 JPQL，您可以将实体更改为如下所示：

@Entity
@Table(name = "sensor_history")
class SensorHistory(@EmbeddedId val id: SensorHistoryId,
                    val value: Float) : Serializable {
}

@Embeddable
class SensorHistoryId(val timestamp: LocalDateTime,
                      @Column(name = "sensor_id") val sensorId: Long) : Serializable {
}

然后你应该可以使用这样的查询：

@Query("select coalesce(sum(sh.value), 0) from SensorHistory sh where sh.id.sensorId = ?1 and sh.id.timestamp > ?2")
fun countLitersSince(sensorId: Long?, since: LocalDateTime): Float

使用 @Table 和 @Column 注释，您可以在 Kotlin 类中正确使用替代名称。

【讨论】：

  • 谢谢先生！ nativeQuery = true 的方法对我有用。虽然我不知道如何应用其他方法。我的真实实体是：SensorHistory（而不是 Entity）/sensor_history（在数据库中）和 SensorHistoryId（而不是 EntityId）。查询应该是什么样子？
  • 我在答案的底部添加了一个示例。
猜你喜欢
  • 1970-01-01
  • 2016-09-23
  • 1970-01-01
  • 2013-10-20
  • 2013-01-27
  • 1970-01-01
  • 1970-01-01
  • 2013-03-07
相关资源
最近更新 更多
热门标签
Java Python linux javascript Mysql C# Docker 算法 前端 SpringBoot Redis Vue spring 设计模式 .net core .net kubernetes c++ 数据库 数据结构 大数据 js 机器学习 微服务 Android Go 程序员 面试 JVM ASP.net core 云原生 人工智能 后端 PHP git CSS golang k8s Nginx Django mybatis 深度学习 多线程 React 架构 devops 爬虫 云计算 Spring Boot LeetCode