Spring 数据 JDBC - 一对多 - Kotlin
Spring Data JDBC - One to Many - Kotlin
我使用 spring boot 2.1.1.RELEASE 和 spring-data-jdbc 1.0.3.RELEASE, Kotlin 1.3.10.
我在 kotlin 中有以下简单的 class 定义：
@Table(value = "CUSTOMER")
data class Customer(
@Id
var id: Long?,
@Column("NAME")
var name: String,
@Column("PUBLICATION_NAME")
var publicationName: String,
@Column("START_DATE")
var startDate: String,
@Column("END_DATE")
var endDate: String,
var items: MutableSet<Item>
)
@Table(value = "ITEM")
data class Item (
@Id
var id: Long?,
@Column("name")
var name: String,
@Column("title")
var title: String,
@Column("weight")
var weight: Double
)
以及以下数据库 table 定义：
CREATE TABLE customer(
id SERIAL PRIMARY KEY,
name VARCHAR(256) NOT NULL,
publication_name VARCHAR(128) NOT NULL,
start_date VARCHAR(10),
end_date VARCHAR(10)
);
CREATE TABLE item(
id SERIAL PRIMARY KEY,
customer INTEGER,
name VARCHAR(256) NOT NULL,
title VARCHAR(128),
weight DOUBLE PRECISION NOT NULL
);
我收到以下错误：
org.springframework.data.mapping.MappingException: Could not read property @org.springframework.data.annotation.Id()private java.lang.Long net.service.model.query.Item.id from result set!
at org.springframework.data.jdbc.core.EntityRowMapper.readFrom(EntityRowMapper.java:130)
at org.springframework.data.jdbc.core.EntityRowMapper.readEntityFrom(EntityRowMapper.java:143)
at org.springframework.data.jdbc.core.EntityRowMapper.readFrom(EntityRowMapper.java:124)
at org.springframework.data.jdbc.core.EntityRowMapper.lambda$createInstance[=14=](EntityRowMapper.java:167)
at org.springframework.data.relational.core.conversion.BasicRelationalConverter$ConvertingParameterValueProvider.getParameterValue(BasicRelationalConverter.java:251)
at org.springframework.data.convert.KotlinClassGeneratingEntityInstantiator$DefaultingKotlinClassInstantiatorAdapter.extractInvocationArguments(KotlinClassGeneratingEntityInstantiator.java:230)
at org.springframework.data.convert.KotlinClassGeneratingEntityInstantiator$DefaultingKotlinClassInstantiatorAdapter.createInstance(KotlinClassGeneratingEntityInstantiator.java:204)
at org.springframework.data.convert.ClassGeneratingEntityInstantiator.createInstance(ClassGeneratingEntityInstantiator.java:84)
at org.springframework.data.relational.core.conversion.BasicRelationalConverter.createInstance(BasicRelationalConverter.java:141)
at org.springframework.data.jdbc.core.EntityRowMapper.createInstance(EntityRowMapper.java:160)
at org.springframework.data.jdbc.core.EntityRowMapper.mapRow(EntityRowMapper.java:71)
at org.springframework.jdbc.core.RowMapperResultSetExtractor.extractData(RowMapperResultSetExtractor.java:94)
at org.springframework.jdbc.core.RowMapperResultSetExtractor.extractData(RowMapperResultSetExtractor.java:61)
at org.springframework.jdbc.core.JdbcTemplate.doInPreparedStatement(JdbcTemplate.java:679)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:617)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:694)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:748)
at org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate.queryForObject(NamedParameterJdbcTemplate.java:235)
at org.springframework.data.jdbc.core.DefaultDataAccessStrategy.findById(DefaultDataAccessStrategy.java:204)
at org.springframework.data.jdbc.core.JdbcAggregateTemplate.findById(JdbcAggregateTemplate.java:135)
at org.springframework.data.jdbc.repository.support.SimpleJdbcRepository.findById(SimpleJdbcRepository.java:66)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.data.repository.core.support.RepositoryComposition$RepositoryFragments.invoke(RepositoryComposition.java:359)
at org.springframework.data.repository.core.support.RepositoryComposition.invoke(RepositoryComposition.java:200)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$ImplementationMethodExecutionInterceptor.invoke(RepositoryFactorySupport.java:644)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:608)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.lambda$invoke(RepositoryFactorySupport.java:595)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$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:294)
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)
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.$Proxy95.findById(Unknown Source)
at net.service.model.query.repository.CustomerRepositoryV2Test.should save Customer with all Items(CustomerRepositoryV2Test.kt:24)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:515)
at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:115)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod(TestMethodTestDescriptor.java:171)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:167)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:114)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:59)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively(NodeTestTask.java:105)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:95)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:71)
at java.util.ArrayList.forEach(ArrayList.java:1249)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively(NodeTestTask.java:110)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:95)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:71)
at java.util.ArrayList.forEach(ArrayList.java:1249)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively(NodeTestTask.java:110)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:95)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:71)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:220)
at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute(DefaultLauncher.java:188)
at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:202)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:181)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:128)
at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:74)
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: org.h2.jdbc.JdbcSQLException: Column "items_id" not found [42122-197]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:357)
at org.h2.message.DbException.get(DbException.java:179)
at org.h2.message.DbException.get(DbException.java:155)
at org.h2.jdbc.JdbcResultSet.getColumnIndex(JdbcResultSet.java:3148)
at org.h2.jdbc.JdbcResultSet.get(JdbcResultSet.java:3247)
at org.h2.jdbc.JdbcResultSet.getObject(JdbcResultSet.java:529)
at org.springframework.data.jdbc.core.EntityRowMapper.readFrom(EntityRowMapper.java:127)
... 88 more
来自 spring 文档：
"The table of the referenced entity is expected to have an additional column named the same as the table of the referencing entity. You can change this name by implementing NamingStrategy.getReverseColumnName(RelationalPersistentProperty property)."
我做错了什么？
更新：
添加 java 集集合 没有 帮助：
var items: java.util.HashSet<Item> = java.util.HashSet()
更新 2：
仍然没有修复，在 github:
上添加了一个可重现的示例项目
https://github.com/ielkhalloufi/spring-data-jdbc-example
这似乎是一个与通过构造函数设置的集合值属性相关的错误。
Kotlin 创建一个包含所有属性的构造函数，包括 Set。
不幸的是，这会触发一个错误，其中 Spring 数据 JDBC 试图从外部实体的 ResultSet 加载包含的实体。
相反，它应该发出另一个 select，当 属性 只能通过 setter 或 "wither".
设置时它会这样做
请在 https://jira.spring.io/projects/DATAJDBC
提交问题
解决方法是从构造函数中排除集合值属性。
由于我对 Kotlin 几乎一无所知，所以我无法告诉您如何做到这一点。
尝试像
一样将集合移出构造函数并移至正文
@Table(value = "CUSTOMER")
data class Customer(
@Id
var id: Long?,
@Column("NAME")
var name: String,
@Column("PUBLICATION_NAME")
var publicationName: String,
@Column("START_DATE")
var startDate: String,
@Column("END_DATE")
var endDate: String
){
var items: MutableSet<Item> = HashSet()
}
并像
一样编辑你的测试
val gasLineItem = Customer(
id = null,
name = "name",
publicationName = "",
startDate = "2018-12-01",
endDate = "2019-02-01"
).apply {
items = mutableSetOf(
gasCreative1,
gasCreative2
)
}
您还可以使用 @PersistenceConstructor 明确地告诉 Spring 数据 JDBC 一个不包含 Set 的构造函数（这是错误的原因） .例如：
@Table(value = "CUSTOMER")
data class Customer(
@Id
var id: Long?,
@Column("NAME")
var name: String,
@Column("PUBLICATION_NAME")
var publicationName: String,
@Column("START_DATE")
var startDate: String,
@Column("END_DATE")
var endDate: String,
var items: MutableSet<Item>
) {
@PersistenceConstructor
constructor(
id: Long?, name: String, publicationName: String, startDate: String, endDate: String
) : this(
id,
name,
publicationName,
startDate,
endDate,
hashSetOf()
)
}
我使用 spring boot 2.1.1.RELEASE 和 spring-data-jdbc 1.0.3.RELEASE, Kotlin 1.3.10.
我在 kotlin 中有以下简单的 class 定义：
@Table(value = "CUSTOMER")
data class Customer(
@Id
var id: Long?,
@Column("NAME")
var name: String,
@Column("PUBLICATION_NAME")
var publicationName: String,
@Column("START_DATE")
var startDate: String,
@Column("END_DATE")
var endDate: String,
var items: MutableSet<Item>
)
@Table(value = "ITEM")
data class Item (
@Id
var id: Long?,
@Column("name")
var name: String,
@Column("title")
var title: String,
@Column("weight")
var weight: Double
)
以及以下数据库 table 定义：
CREATE TABLE customer(
id SERIAL PRIMARY KEY,
name VARCHAR(256) NOT NULL,
publication_name VARCHAR(128) NOT NULL,
start_date VARCHAR(10),
end_date VARCHAR(10)
);
CREATE TABLE item(
id SERIAL PRIMARY KEY,
customer INTEGER,
name VARCHAR(256) NOT NULL,
title VARCHAR(128),
weight DOUBLE PRECISION NOT NULL
);
我收到以下错误：
org.springframework.data.mapping.MappingException: Could not read property @org.springframework.data.annotation.Id()private java.lang.Long net.service.model.query.Item.id from result set!
at org.springframework.data.jdbc.core.EntityRowMapper.readFrom(EntityRowMapper.java:130)
at org.springframework.data.jdbc.core.EntityRowMapper.readEntityFrom(EntityRowMapper.java:143)
at org.springframework.data.jdbc.core.EntityRowMapper.readFrom(EntityRowMapper.java:124)
at org.springframework.data.jdbc.core.EntityRowMapper.lambda$createInstance[=14=](EntityRowMapper.java:167)
at org.springframework.data.relational.core.conversion.BasicRelationalConverter$ConvertingParameterValueProvider.getParameterValue(BasicRelationalConverter.java:251)
at org.springframework.data.convert.KotlinClassGeneratingEntityInstantiator$DefaultingKotlinClassInstantiatorAdapter.extractInvocationArguments(KotlinClassGeneratingEntityInstantiator.java:230)
at org.springframework.data.convert.KotlinClassGeneratingEntityInstantiator$DefaultingKotlinClassInstantiatorAdapter.createInstance(KotlinClassGeneratingEntityInstantiator.java:204)
at org.springframework.data.convert.ClassGeneratingEntityInstantiator.createInstance(ClassGeneratingEntityInstantiator.java:84)
at org.springframework.data.relational.core.conversion.BasicRelationalConverter.createInstance(BasicRelationalConverter.java:141)
at org.springframework.data.jdbc.core.EntityRowMapper.createInstance(EntityRowMapper.java:160)
at org.springframework.data.jdbc.core.EntityRowMapper.mapRow(EntityRowMapper.java:71)
at org.springframework.jdbc.core.RowMapperResultSetExtractor.extractData(RowMapperResultSetExtractor.java:94)
at org.springframework.jdbc.core.RowMapperResultSetExtractor.extractData(RowMapperResultSetExtractor.java:61)
at org.springframework.jdbc.core.JdbcTemplate.doInPreparedStatement(JdbcTemplate.java:679)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:617)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:694)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:748)
at org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate.queryForObject(NamedParameterJdbcTemplate.java:235)
at org.springframework.data.jdbc.core.DefaultDataAccessStrategy.findById(DefaultDataAccessStrategy.java:204)
at org.springframework.data.jdbc.core.JdbcAggregateTemplate.findById(JdbcAggregateTemplate.java:135)
at org.springframework.data.jdbc.repository.support.SimpleJdbcRepository.findById(SimpleJdbcRepository.java:66)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.data.repository.core.support.RepositoryComposition$RepositoryFragments.invoke(RepositoryComposition.java:359)
at org.springframework.data.repository.core.support.RepositoryComposition.invoke(RepositoryComposition.java:200)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$ImplementationMethodExecutionInterceptor.invoke(RepositoryFactorySupport.java:644)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:608)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.lambda$invoke(RepositoryFactorySupport.java:595)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:595)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:59)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:294)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:139)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:93)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:61)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.data.repository.core.support.MethodInvocationValidator.invoke(MethodInvocationValidator.java:99)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212)
at com.sun.proxy.$Proxy95.findById(Unknown Source)
at net.service.model.query.repository.CustomerRepositoryV2Test.should save Customer with all Items(CustomerRepositoryV2Test.kt:24)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:515)
at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:115)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod(TestMethodTestDescriptor.java:171)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:167)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:114)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:59)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively(NodeTestTask.java:105)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:95)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:71)
at java.util.ArrayList.forEach(ArrayList.java:1249)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively(NodeTestTask.java:110)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:95)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:71)
at java.util.ArrayList.forEach(ArrayList.java:1249)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively(NodeTestTask.java:110)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:95)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:71)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:220)
at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute(DefaultLauncher.java:188)
at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:202)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:181)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:128)
at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:74)
at com.intellij.rt.execution.junit.IdeaTestRunner$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: org.h2.jdbc.JdbcSQLException: Column "items_id" not found [42122-197]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:357)
at org.h2.message.DbException.get(DbException.java:179)
at org.h2.message.DbException.get(DbException.java:155)
at org.h2.jdbc.JdbcResultSet.getColumnIndex(JdbcResultSet.java:3148)
at org.h2.jdbc.JdbcResultSet.get(JdbcResultSet.java:3247)
at org.h2.jdbc.JdbcResultSet.getObject(JdbcResultSet.java:529)
at org.springframework.data.jdbc.core.EntityRowMapper.readFrom(EntityRowMapper.java:127)
... 88 more
来自 spring 文档： "The table of the referenced entity is expected to have an additional column named the same as the table of the referencing entity. You can change this name by implementing NamingStrategy.getReverseColumnName(RelationalPersistentProperty property)."
我做错了什么？
更新： 添加 java 集集合 没有 帮助：
var items: java.util.HashSet<Item> = java.util.HashSet()
更新 2： 仍然没有修复，在 github:
上添加了一个可重现的示例项目https://github.com/ielkhalloufi/spring-data-jdbc-example
这似乎是一个与通过构造函数设置的集合值属性相关的错误。
Kotlin 创建一个包含所有属性的构造函数，包括 Set。
不幸的是，这会触发一个错误，其中 Spring 数据 JDBC 试图从外部实体的 ResultSet 加载包含的实体。
相反，它应该发出另一个 select，当 属性 只能通过 setter 或 "wither".
请在 https://jira.spring.io/projects/DATAJDBC
提交问题解决方法是从构造函数中排除集合值属性。 由于我对 Kotlin 几乎一无所知，所以我无法告诉您如何做到这一点。
尝试像
一样将集合移出构造函数并移至正文@Table(value = "CUSTOMER")
data class Customer(
@Id
var id: Long?,
@Column("NAME")
var name: String,
@Column("PUBLICATION_NAME")
var publicationName: String,
@Column("START_DATE")
var startDate: String,
@Column("END_DATE")
var endDate: String
){
var items: MutableSet<Item> = HashSet()
}
并像
一样编辑你的测试val gasLineItem = Customer(
id = null,
name = "name",
publicationName = "",
startDate = "2018-12-01",
endDate = "2019-02-01"
).apply {
items = mutableSetOf(
gasCreative1,
gasCreative2
)
}
您还可以使用 @PersistenceConstructor 明确地告诉 Spring 数据 JDBC 一个不包含 Set 的构造函数（这是错误的原因） .例如：
@Table(value = "CUSTOMER")
data class Customer(
@Id
var id: Long?,
@Column("NAME")
var name: String,
@Column("PUBLICATION_NAME")
var publicationName: String,
@Column("START_DATE")
var startDate: String,
@Column("END_DATE")
var endDate: String,
var items: MutableSet<Item>
) {
@PersistenceConstructor
constructor(
id: Long?, name: String, publicationName: String, startDate: String, endDate: String
) : this(
id,
name,
publicationName,
startDate,
endDate,
hashSetOf()
)
}