Spring data + hibernate utilizza il nome della colonna errato

Question

Utilizzando Spring Data + hibernate, Hibernate è configurato per creare automaticamente lo schema. Tuttavia quando viene lanciata un'eccezione viene lanciata (vedi sotto).

Sembra che il nome della colonna utilizzato durante la creazione dello schema automatico sia diverso dal nome della colonna per la query.

Se si configura LocalSessionFactoryBean per utilizzare una strategia di denominazione, il problema scompare e il test funziona.

È un errore? o sto fraintendendo qualcosa?

L'installazione è di seguito.

[Modifica] Come da registro sottostante è presente il messaggio ERROR: column datum0_.datum_id does not exist. Tuttavia la colonna in realtà si chiama datumId, come si può vedere dal SQL ingresso:

create table Datum (
    datumId int4 not null, 
    value varchar(255), 
    primary key (datumId) 
) 

---

Application.java:

package test; 

import org.apache.commons.logging.Log; 
import org.apache.commons.logging.LogFactory; 
import org.springframework.boot.SpringApplication; 
import org.springframework.boot.autoconfigure.EnableAutoConfiguration; 
import org.springframework.context.ConfigurableApplicationContext; 
import org.springframework.context.annotation.Configuration; 
import org.springframework.context.annotation.ImportResource; 

@Configuration 
@ImportResource("classpath:Application.xml") 
@EnableAutoConfiguration 
public class Application { 
    static Log log = LogFactory.getLog(Application.class); 

    public static void main(String[] args) throws Exception { 
     ConfigurableApplicationContext context = SpringApplication.run(Application.class, args); 
     DatumRepository repository = context.getBean(DatumRepository.class); 
     repository.findAll(); 
    } 
} 

Datum.java:

package test; 

import javax.persistence.*; 

@Entity 
public class Datum { 
    @Id 
    @GeneratedValue 
    private int datumId; 

    @Column 
    private String value; 

    public int getDatumId() { 
     return datumId; 
    } 

    public void setDatumId(int datumId) { 
     this.datumId = datumId; 
    } 

    public String getValue() { 
     return value; 
    } 

    public void setValue(String value) { 
     this.value = value; 
    } 
} 

DatumRepository .java:

package test; 

import org.springframework.data.repository.CrudRepository; 

public interface DatumRepository extends CrudRepository<Datum, Integer> { 
} 

Application.xml:

<?xml version="1.0" encoding="UTF-8"?> 
<beans 
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
     xmlns="http://www.springframework.org/schema/beans" 
     xmlns:context="http://www.springframework.org/schema/context" 
     xmlns:jpa="http://www.springframework.org/schema/data/jpa" 
     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd 
          http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd 
          http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd"> 

    <!--Searches for @Configuration classes and stereotypes--> 
    <context:component-scan base-package="test" /> 

    <!--Searches for @Autowired/@Inject--> 
    <context:annotation-config /> 

    <!-- For creation of repositories --> 
    <!--<jpa:repositories base-package="test" />--> 

    <!--Data source--> 
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> 
     <property name="driverClassName" value="org.postgresql.Driver"/> 
     <property name="url" value="jdbc:postgresql://localhost/nexus"/> 
     <property name="username" value="nexus"/> 
     <property name="password" value="nexus"/> 
    </bean> 

    <!-- Hibernate --> 
    <bean class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> 
     <property name="dataSource" ref="dataSource"/> 
     <property name="packagesToScan" value="test" /> 
     <!--<property name="namingStrategy"><ref bean="naming" /></property>--> 

     <property name="hibernateProperties"> 
      <value> 
       hibernate.hbm2ddl.auto=create-drop 
       hibernate.show_sql=true 
       hibernate.format_sql=true 
      </value> 
     </property> 
    </bean> 

    <bean id="naming" class="org.hibernate.cfg.ImprovedNamingStrategy"></bean> 
</beans> 

pom.xml:

<?xml version="1.0" encoding="UTF-8"?> 
<project xmlns="http://maven.apache.org/POM/4.0.0" 
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 
    <modelVersion>4.0.0</modelVersion> 

    <groupId>test</groupId> 
    <artifactId>test1</artifactId> 
    <version>1.0-SNAPSHOT</version> 

    <parent> 
     <groupId>org.springframework.boot</groupId> 
     <artifactId>spring-boot-starter-parent</artifactId> 
     <version>1.2.1.RELEASE</version> 
    </parent> 

    <dependencies> 
     <dependency> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-starter-data-jpa</artifactId> 
     </dependency> 

     <dependency> 
      <groupId>org.postgresql</groupId> 
      <artifactId>postgresql</artifactId> 
      <version>9.3-1100-jdbc41</version> 
     </dependency> 

     <dependency> 
      <groupId>commons-dbcp</groupId> 
      <artifactId>commons-dbcp</artifactId> 
      <version>1.4</version> 
     </dependency> 
    </dependencies> 

    <build> 
     <plugins> 
      <plugin> 
       <groupId>org.springframework.boot</groupId> 
       <artifactId>spring-boot-maven-plugin</artifactId> 
      </plugin> 
     </plugins> 
    </build> 

    <repositories> 
     <repository> 
      <id>spring-releases</id> 
      <url>https://repo.spring.io/libs-release</url> 
     </repository> 
    </repositories> 

    <pluginRepositories> 
     <pluginRepository> 
      <id>spring-releases</id> 
      <url>https://repo.spring.io/libs-release</url> 
     </pluginRepository> 
    </pluginRepositories> 

</project> 

(edit) Uscita + eccezione:

2015-02-03 13:49:14.697 INFO 3515 --- [lication.main()] test.Application       : Starting Application on desktop with PID 3515 (/home/breamec/src/test1/target/classes started by breamec in /home/breamec/src/test1) 
2015-02-03 13:49:14.747 INFO 3515 --- [lication.main()] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@5b525b5f: startup date [Tue Feb 03 13:49:14 GMT 2015]; root of context hierarchy 
2015-02-03 13:49:15.232 INFO 3515 --- [lication.main()] o.s.b.f.xml.XmlBeanDefinitionReader  : Loading XML bean definitions from class path resource [Application.xml] 
2015-02-03 13:49:16.070 INFO 3515 --- [lication.main()] o.s.j.d.DriverManagerDataSource   : Loaded JDBC driver: org.postgresql.Driver 
2015-02-03 13:49:16.308 INFO 3515 --- [lication.main()] j.LocalContainerEntityManagerFactoryBean : Building JPA container EntityManagerFactory for persistence unit 'default' 
2015-02-03 13:49:16.340 INFO 3515 --- [lication.main()] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [ 
    name: default 
    ...] 
2015-02-03 13:49:16.454 INFO 3515 --- [lication.main()] org.hibernate.Version     : HHH000412: Hibernate Core {4.3.7.Final} 
2015-02-03 13:49:16.457 INFO 3515 --- [lication.main()] org.hibernate.cfg.Environment   : HHH000206: hibernate.properties not found 
2015-02-03 13:49:16.458 INFO 3515 --- [lication.main()] org.hibernate.cfg.Environment   : HHH000021: Bytecode provider name : javassist 
2015-02-03 13:49:16.683 INFO 3515 --- [lication.main()] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {4.0.5.Final} 
2015-02-03 13:49:17.202 INFO 3515 --- [lication.main()] org.hibernate.dialect.Dialect   : HHH000400: Using dialect: org.hibernate.dialect.PostgreSQL9Dialect 
2015-02-03 13:49:17.218 INFO 3515 --- [lication.main()] o.h.e.jdbc.internal.LobCreatorBuilder : HHH000424: Disabling contextual LOB creation as createClob() method threw error : java.lang.reflect.InvocationTargetException 
2015-02-03 13:49:17.355 INFO 3515 --- [lication.main()] o.h.h.i.ast.ASTQueryTranslatorFactory : HHH000397: Using ASTQueryTranslatorFactory 
2015-02-03 13:49:18.189 INFO 3515 --- [lication.main()] org.hibernate.dialect.Dialect   : HHH000400: Using dialect: org.hibernate.dialect.PostgreSQL9Dialect 
2015-02-03 13:49:18.190 INFO 3515 --- [lication.main()] o.h.e.jdbc.internal.LobCreatorBuilder : HHH000424: Disabling contextual LOB creation as createClob() method threw error : java.lang.reflect.InvocationTargetException 
2015-02-03 13:49:18.199 INFO 3515 --- [lication.main()] o.h.e.t.i.TransactionFactoryInitiator : HHH000399: Using default transaction strategy (direct JDBC transactions) 
2015-02-03 13:49:18.199 INFO 3515 --- [lication.main()] o.h.h.i.ast.ASTQueryTranslatorFactory : HHH000397: Using ASTQueryTranslatorFactory 
2015-02-03 13:49:18.211 INFO 3515 --- [lication.main()] org.hibernate.tool.hbm2ddl.SchemaExport : HHH000227: Running hbm2ddl schema export 
Hibernate: 
    drop table Datum cascade 
2015-02-03 13:49:18.219 ERROR 3515 --- [lication.main()] org.hibernate.tool.hbm2ddl.SchemaExport : HHH000389: Unsuccessful: drop table Datum cascade 
2015-02-03 13:49:18.219 ERROR 3515 --- [lication.main()] org.hibernate.tool.hbm2ddl.SchemaExport : ERROR: table "datum" does not exist 
Hibernate: 
    drop sequence hibernate_sequence 
2015-02-03 13:49:18.221 ERROR 3515 --- [lication.main()] org.hibernate.tool.hbm2ddl.SchemaExport : HHH000389: Unsuccessful: drop sequence hibernate_sequence 
2015-02-03 13:49:18.221 ERROR 3515 --- [lication.main()] org.hibernate.tool.hbm2ddl.SchemaExport : ERROR: sequence "hibernate_sequence" does not exist 
Hibernate: 
    create table Datum (
     datumId int4 not null, 
     value varchar(255), 
     primary key (datumId) 
    ) 
Hibernate: 
    create sequence hibernate_sequence 
2015-02-03 13:49:18.230 INFO 3515 --- [lication.main()] org.hibernate.tool.hbm2ddl.SchemaExport : HHH000230: Schema export complete 
2015-02-03 13:49:18.737 INFO 3515 --- [lication.main()] o.s.j.e.a.AnnotationMBeanExporter  : Registering beans for JMX exposure on startup 
2015-02-03 13:49:18.745 INFO 3515 --- [lication.main()] test.Application       : Started Application in 4.32 seconds (JVM running for 8.385) 
2015-02-03 13:49:18.961 WARN 3515 --- [lication.main()] o.h.engine.jdbc.spi.SqlExceptionHelper : SQL Error: 0, SQLState: 42703 
2015-02-03 13:49:18.961 ERROR 3515 --- [lication.main()] o.h.engine.jdbc.spi.SqlExceptionHelper : ERROR: column datum0_.datum_id does not exist 
    Position: 8 
[WARNING] 
java.lang.reflect.InvocationTargetException 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:606) 
    at org.springframework.boot.maven.RunMojo$LaunchRunner.run(RunMojo.java:418) 
    at java.lang.Thread.run(Thread.java:745) 
Caused by: org.springframework.dao.InvalidDataAccessResourceUsageException: could not extract ResultSet; SQL [n/a]; nested exception is org.hibernate.exception.SQLGrammarException: could not extract ResultSet 
    at org.springframework.orm.jpa.vendor.HibernateJpaDialect.convertHibernateAccessException(HibernateJpaDialect.java:231) 
    at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:214) 
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:417) 
    at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:59) 
    at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:213) 
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:147) 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) 
    at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodIntercceptor.invoke(CrudMethodMetadataPostProcessor.java:122) 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) 
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) 
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) 
    at com.sun.proxy.$Proxy51.findAll(Unknown Source) 
    at test.Application.main(Application.java:20) 
    ... 6 more 
Caused by: org.hibernate.exception.SQLGrammarException: could not extract ResultSet 
    at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:123) 
    at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49) 
    at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126) 
    at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:112) 
    at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:91) 
    at org.hibernate.loader.Loader.getResultSet(Loader.java:2066) 
    at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1863) 
    at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1839) 
    at org.hibernate.loader.Loader.doQuery(Loader.java:910) 
    at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:355) 
    at org.hibernate.loader.Loader.doList(Loader.java:2554) 
    at org.hibernate.loader.Loader.doList(Loader.java:2540) 
    at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2370) 
    at org.hibernate.loader.Loader.list(Loader.java:2365) 
    at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:497) 
    at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:387) 
    at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:236) 
    at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1264) 
    at org.hibernate.internal.QueryImpl.list(QueryImpl.java:103) 
    at org.hibernate.jpa.internal.QueryImpl.list(QueryImpl.java:573) 
    at org.hibernate.jpa.internal.QueryImpl.getResultList(QueryImpl.java:449) 
    at org.hibernate.jpa.criteria.compile.CriteriaQueryTypeQueryAdapter.getResultList(CriteriaQueryTypeQueryAdapter.java:67) 
    at org.springframework.data.jpa.repository.support.SimpleJpaRepository.findAll(SimpleJpaRepository.java:289) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:606) 
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.executeMethodOn(RepositoryFactorySupport.java:442) 
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:427) 
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:381) 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) 
    at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) 
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281) 
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) 
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136) 
    ... 14 more 
Caused by: org.postgresql.util.PSQLException: ERROR: column datum0_.datum_id does not exist 
    Position: 8 
    at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2161) 
    at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1890) 
    at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:255) 
    at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:560) 
    at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:417) 
    at org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:302) 
    at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:82) 
    ... 45 more 

Answer 1

Per impostazione predefinita, Primavera di avvio utilizza org.springframework.boot.orm.jpa.SpringNamingStrategy.

Hibernate NamingStrategy che segue le convenzioni di denominazione Spring consigliate.

strategia Questa denominazione prende solo il nome del campo e ne deduce un nome di colonna basata solo su quello, sostituendo caso cammello con sottolineatura. Non hai pubblicato l'eccezione, ma basandoti su questo Hibernate probabilmente hai interrogato per la colonna datum_id.

Related issue raised on Spring boot project

Answer 2

SpringNamingStrategy extends ImprovedNamingStrategy 

in modo da applicare il qui sotto:

ho trovato il problema è nel ImprovedNamingStrategy se si vuole risolvere senza particolari utilizzano DefaultNamingStrategy invece ImprovedNamingStrategy come di seguito nel file di proprietà

spring.jpa.hibernate.naming-strategy=org.hibernate.cfg.DefaultNamingStrategy 

Dettagli: Esistono 2 metodi nell'interfaccia NamingStrategy propertyToColumnNa me e columnName, il primo chiamato se non hai specificato il nome in @Column e il secondo chiamato se specifichi il nome in @Column.

in ImprovedNamingStrategy cambiano entrambi il nome da cammello a formato _ mentre in DefaultNamingStrategy restituisce il nome poiché è nel 2 ° metodo che è dal mio punto di vista il comportamento corretto.

Answer 3

Capito.

Utilizzare DefaultNamingStrategy e i backtick nell'annotazione @Column.

spring.jpa.hibernate.naming-strategy=org.hibernate.cfg.DefaultNamingStrategy 

e

@Column(name = "`datumId`") 
private int datumId;