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Spring Data JDBC - 一对多 - Kotlin

本文介绍了Spring Data JDBC - 一对多 - Kotlin的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我使用 spring boot 2.1.1.RELEASE 和 spring-data-jdbc 1.0.3.RELEASE，Kotlin 1.3.10.

我在 kotlin 中有以下简单的类定义:

@Table(value = "CUSTOMER")数据类客户(@Idvar id:长?，@Column("名称")变量名:字符串，@Column("PUBLICATION_NAME")var 发布名称:字符串，@Column("START_DATE")var startDate:字符串，@Column("END_DATE")var endDate:字符串，var items: MutableSet)@Table(value = "ITEM")数据类项目(@Idvar id:长?，@Column("名称")变量名:字符串，@Column("标题")var 标题:字符串，@Column("权重")var 重量:双倍)

以及以下数据库表定义:

创建表客户(id 序列主键，名称 VARCHAR(256) 非空，发布名称 VARCHAR(128) 非空，开始日期 VARCHAR(10),结束日期 VARCHAR(10));创建表格项目(id 序列主键，客户整数，名称 VARCHAR(256) 非空，标题 VARCHAR(128),重量双精度非空);

我收到以下错误:

org.springframework.data.mapping.MappingException:无法读取属性@org.springframework.data.annotation.Id()private java.lang.Long net.service.model.query.Item.id from结果集！在 org.springframework.data.jdbc.core.EntityRowMapper.readFrom(EntityRowMapper.java:130)在 org.springframework.data.jdbc.core.EntityRowMapper.readEntityFrom(EntityRowMapper.java:143)在 org.springframework.data.jdbc.core.EntityRowMapper.readFrom(EntityRowMapper.java:124)在 org.springframework.data.jdbc.core.EntityRowMapper.lambda$createInstance$0(EntityRowMapper.java:167)在 org.springframework.data.relational.core.conversion.BasicRelationalConverter$ConvertingParameterValueProvider.getParameterValue(BasicRelationalConverter.java:251)在 org.springframework.data.convert.KotlinClassGeneratingEntityInstantiator$DefaultingKotlinClassInstantiatorAdapter.extractInvocationArguments(KotlinClassGeneratingEntityInstantiator.java:230)在 org.springframework.data.convert.KotlinClassGeneratingEntityInstantiator$DefaultingKotlinClassInstantiatorAdapter.createInstance(KotlinClassGeneratingEntityInstantiator.java:204)在 org.springframework.data.convert.ClassGeneratingEntityInstantiator.createInstance(ClassGeneratingEntityInstantiator.java:84)在 org.springframework.data.relational.core.conversion.BasicRelationalConverter.createInstance(BasicRelationalConverter.java:141)在 org.springframework.data.jdbc.core.EntityRowMapper.createInstance(EntityRowMapper.java:160)在 org.springframework.data.jdbc.core.EntityRowMapper.mapRow(EntityRowMapper.java:71)在 org.springframework.jdbc.core.RowMapperResultSetExtractor.extractData(RowMapperResultSetExtractor.java:94)在 org.springframework.jdbc.core.RowMapperResultSetExtractor.extractData(RowMapperResultSetExtractor.java:61)在 org.springframework.jdbc.core.JdbcTemplate$1.doInPreparedStatement(JdbcTemplate.java:679)在 org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:617)在 org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669)在 org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:694)在 org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:748)在 org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate.queryForObject(NamedParameterJdbcTemplate.java:235)在 org.springframework.data.jdbc.core.DefaultDataAccessStrategy.findById(DefaultDataAccessStrategy.java:204)在 org.springframework.data.jdbc.core.JdbcAggregateTemplate.findById(JdbcAggregateTemplate.java:135)在 org.springframework.data.jdbc.repository.support.SimpleJdbcRepository.findById(SimpleJdbcRepository.java:66)在 sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)在 sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)在 sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)在 java.lang.reflect.Method.invoke(Method.java:498)在 org.springframework.data.repository.core.support.RepositoryComposition$RepositoryFragments.invoke(RepositoryComposition.java:359)在 org.springframework.data.repository.core.support.RepositoryComposition.invoke(RepositoryComposition.java:200)在 org.springframework.data.repository.core.support.RepositoryFactorySupport$ImplementationMethodExecutionInterceptor.invoke(RepositoryFactorySupport.java:644)在 org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)在 org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:608)在 org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.lambda$invoke$3(RepositoryFactorySupport.java:595)在 org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:595)在 org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)在 org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:59)在 org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)在 org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:294)在 org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98)在 org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)在 org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:139)在 org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)在 org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:93)在 org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)在 org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:61)在 org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)在 org.springframework.data.repository.core.support.MethodInvocationValidator.invoke(MethodInvocationValidator.java:99)在 org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)在 org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212)在 com.sun.proxy.$Proxy95.findById(来源不明)在 net.service.model.query.repository.CustomerRepositoryV2Test.should 保存 Customer 和所有 Items(CustomerRepositoryV2Test.kt:24)在 sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)在 sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)在 sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)在 java.lang.reflect.Method.invoke(Method.java:498)在 org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:515)在 org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:115)在 org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:171)在 org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)在 org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:167)在 org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:114)在 org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:59)在 org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:105)在 org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)在 org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively (NodeTestTask.java:95)在 org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:71)在 java.util.ArrayList.forEach(ArrayList.java:1249)在 org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)在 org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:110)在 org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)在 org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively (NodeTestTask.java:95)在 org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:71)在 java.util.ArrayList.forEach(ArrayList.java:1249)在 org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)在 org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:110)在 org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)在 org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively (NodeTestTask.java:95)在 org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:71)在 org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)在 org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)在 org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51)在 org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:220)在 org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$6(DefaultLauncher.java:188)在 org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:202)在 org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:181)在 org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:128)在 com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:74)在 com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)在 com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)在 com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)引起:org.h2.jdbc.JdbcSQLException:未找到列items_id"[42122-197]在 org.h2.message.DbException.getJdbcSQLException(DbException.java:357)在 org.h2.message.DbException.get(DbException.java:179)在 org.h2.message.DbException.get(DbException.java:155)在 org.h2.jdbc.JdbcResultSet.getColumnIndex(JdbcResultSet.java:3148)在 org.h2.jdbc.JdbcResultSet.get(JdbcResultSet.java:3247)在 org.h2.jdbc.JdbcResultSet.getObject(JdbcResultSet.java:529)在 org.springframework.data.jdbc.core.EntityRowMapper.readFrom(EntityRowMapper.java:127)... 88 更多

来自 spring 文档:引用实体的表应该有一个与引用实体的表名称相同的附加列.您可以通过实现 NamingStrategy.getReverseColumnName(RelationalPersistentProperty 属性)来更改此名称.">

我做错了什么?

更新:添加 java set 集合也没有帮助:

var items: java.util.HashSet= 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
解决方案

尝试将 set 从构造函数移到 body 中，如 

@Table(value = "CUSTOMER")数据类客户(@Idvar id:长?，@Column("名称")变量名:字符串，@Column("PUBLICATION_NAME")var 发布名称:字符串，@Column("START_DATE")var startDate:字符串，@Column("END_DATE")var endDate: 字符串){var items: MutableSet= HashSet()}

并像编辑您的测试一样

val gasLineItem = Customer(id = 空，姓名 = "姓名",出版物名称 = "",startDate = "2018-12-01",endDate = "2019-02-01").应用{项目 = mutableSetOf(气体创意1，气体创意2)}

I use spring boot 2.1.1.RELEASE and spring-data-jdbc 1.0.3.RELEASE, Kotlin 1.3.10.

I have the following simple class definitions in kotlin:

@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
)

And the following database table definitions:

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
);

I get the following error:

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$0(EntityRowMapper.java:167)
    at org.springframework.data.relational.core.conversion.BasicRelationalConverter$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$1.doInPreparedStatement(JdbcTemplate.java:679)
    at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:617)
    at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:669)
    at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:694)
    at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:748)
    at org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate.queryForObject(NamedParameterJdbcTemplate.java:235)
    at org.springframework.data.jdbc.core.DefaultDataAccessStrategy.findById(DefaultDataAccessStrategy.java:204)
    at org.springframework.data.jdbc.core.JdbcAggregateTemplate.findById(JdbcAggregateTemplate.java:135)
    at org.springframework.data.jdbc.repository.support.SimpleJdbcRepository.findById(SimpleJdbcRepository.java:66)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.springframework.data.repository.core.support.RepositoryComposition$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$3(RepositoryFactorySupport.java:595)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$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: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$6(TestMethodTestDescriptor.java:171)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:167)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:114)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:59)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:105)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:95)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:71)
    at java.util.ArrayList.forEach(ArrayList.java:1249)
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:110)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:95)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:71)
    at java.util.ArrayList.forEach(ArrayList.java:1249)
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:110)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:72)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:95)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:71)
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51)
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:220)
    at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$6(DefaultLauncher.java:188)
    at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:202)
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:181)
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:128)
    at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:74)
    at com.intellij.rt.execution.junit.IdeaTestRunner$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

From the spring documentation:"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)."

What am I doing wrong?

Update:Adding the java set collection did not help either:

var items: java.util.HashSet<Item> = java.util.HashSet()

Update 2:Still no fix, added a reproducible example project on github:

https://github.com/ielkhalloufi/spring-data-jdbc-example
解决方案

Try moving the set out of the constructor and to the body like 

@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()
}

And edit your test like

val gasLineItem = Customer(
            id = null,
            name = "name",
            publicationName = "",
            startDate = "2018-12-01",
            endDate = "2019-02-01"

    ).apply {
        items = mutableSetOf(
                gasCreative1,
                gasCreative2
        )
    }

这篇关于Spring Data JDBC - 一对多 - Kotlin的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！

08-04 13:39
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