स्प्रिंग डेटा + हाइबरनेट का उपयोग करके, हाइबरनेट स्वचालित रूप से स्कीमा बनाने के लिए कॉन्फ़िगर किया गया है। हालांकि जब एक अपवाद पूछताछ फेंक दिया जाता है (नीचे देखें)।वसंत डेटा + हाइबरनेट गलत कॉलम नाम का उपयोग करता है
ऐसा लगता है कि स्वचालित स्कीमा निर्माण के दौरान उपयोग किए गए कॉलम नाम क्वेरी के कॉलम नाम से अलग है।
यदि मैं नामकरण रणनीति का उपयोग करने के लिए LocalSessionFactoryBean
कॉन्फ़िगर करता हूं तो समस्या गायब हो जाती है और परीक्षण कार्य करता है।
क्या यह एक बग है? या मैं कुछ गलत समझ रहा हूँ?
सेटअप नीचे है।
[संपादित करें] संदेश के नीचे दिए गए लॉग के अनुसार ERROR: column datum0_.datum_id does not exist
मौजूद है। हालांकि स्तंभ वास्तव में datumId
नाम पर है, के रूप में लॉग इन किया एसक्यूएल से देखा जा सकता:
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>
(संपादित) उत्पादन + अपवाद:
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.spring[email protected]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
वसंत के डिफ़ॉल्ट नामकरण एक स्तंभ 'datum_id' कहा जाता है के लिए' datumId' नक्शा होगा। यदि आप अपने कॉलम को एक अलग नाम का उपयोग करना चाहते हैं, तो बस इसे कहने के लिए टिप्पणी करें: 'कॉलम (name = "datumId") '। – Steve
स्क्रैच करें ... आपको शायद इसे '@ कॉलम (नाम = "डेटामिड") बनाने की आवश्यकता होगी। यदि आप मिश्रित मामले का उपयोग करते हैं, तो 'SpringNamingStrategy' आपके द्वारा प्रदान किए गए नाम को अनदेखा कर देगा और अंडरस्कोर डालें चाहे आप उन्हें चाहते हों या नहीं। – Steve