6 votes

Andres Cárdenas avatar

HHH000342 : Impossible d'obtenir une connexion aux métadonnées de la requête : null

Demandé el 2 de Avril, 2019
Quand la question a-t-elle été
25966 affichage
Nombre de visites la question a
1 Réponses
Nombre de réponses aux questions
Résolu
Situation réelle de la question

J'essaie d'insérer des données simples dans ma base de données mysql locale en utilisant jpa-2.2 avec hibernate dans mon projet Java.

c'est le pom lié :

<!-- JPA -->
        <dependency>
            <groupId>javax.persistence</groupId>
            <artifactId>javax.persistence-api</artifactId>
            <version>2.2</version>
        </dependency>
        <!-- HIBERNATE -->
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>5.4.2.Final</version>
        </dependency>
        <!-- MYSQL -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.15</version>
        </dependency>

Voici mon daoClass et la ligne où il s'interrompt :

import beans.CulturalEvent;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.EntityTransaction;
import javax.persistence.Persistence;
import java.util.ArrayList;

public class CulturalEventDao implements ICulturalEventDao {

// this lane gives error
private static final EntityManagerFactory ENTITY_MANAGER_FACTORY = Persistence
        .createEntityManagerFactory("EventsPersistence");
private ArrayList<CulturalEvent> allEventsList = new ArrayList<>();

public void insertEvent (CulturalEvent event) throws Exception {
    //code i want to try
}

}

Voici la trace d'erreur :

    abr 02, 2019 10:43:14 AM org.hibernate.jpa.internal.util.LogHelper logPersistenceUnitInformation
INFO: HHH000204: Processing PersistenceUnitInfo [name: EventsPersistence]
abr 02, 2019 10:43:14 AM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {5.4.2.Final}
abr 02, 2019 10:43:15 AM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {5.1.0.Final}
abr 02, 2019 10:58:09 AM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
WARN: HHH10001002: Using Hibernate built-in connection pool (not for production use!)
abr 02, 2019 10:58:09 AM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001005: using driver [com.mysql.cj.jdbc.Driver] at URL [jdbc:mysql://localhost:3306/inventario]
abr 02, 2019 10:58:09 AM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001001: Connection properties: {user=root, password=****, dialect=MySQLDialect}
abr 02, 2019 10:58:09 AM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001003: Autocommit mode: false
abr 02, 2019 10:58:09 AM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl$PooledConnections <init>
INFO: HHH000115: Hibernate connection pool size: 20 (min=1)
abr 02, 2019 10:58:10 AM org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator initiateService
WARN: HHH000342: Could not obtain connection to query metadata : null
Exception in thread "main" java.lang.ExceptionInInitializerError
    at Inventario.main(Inventario.java:25)
Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:275)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214)
    at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:51)
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:107)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:246)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214)
    at org.hibernate.engine.jdbc.connections.internal.BasicConnectionCreator.convertSqlException(BasicConnectionCreator.java:116)
    at org.hibernate.engine.jdbc.connections.internal.DriverConnectionCreator.makeConnection(DriverConnectionCreator.java:41)
    at org.hibernate.engine.jdbc.connections.internal.BasicConnectionCreator.createConnection(BasicConnectionCreator.java:58)
    at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl$PooledConnections.addConnections(DriverManagerConnectionProviderImpl.java:321)
    at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl$PooledConnections.<init>(DriverManagerConnectionProviderImpl.java:240)
    at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl$PooledConnections.<init>(DriverManagerConnectionProviderImpl.java:218)
    at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl$PooledConnections$Builder.build(DriverManagerConnectionProviderImpl.java:359)
    at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.buildPool(DriverManagerConnectionProviderImpl.java:98)
    at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.configure(DriverManagerConnectionProviderImpl.java:73)
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:107)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:246)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214)
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.buildJdbcConnectionAccess(JdbcEnvironmentInitiator.java:145)
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:66)
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35)
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214)
    at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214)
    at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:175)
    at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:118)
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:900)
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:931)
    at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:56)
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:79)
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:54)
    at models.dao.CulturalEventDao.<clinit>(CulturalEventDao.java:15)
    ... 1 more
Caused by: org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
    at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.determineDialect(DialectFactoryImpl.java:100)
    at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:54)
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:137)
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35)
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263)
    ... 38 more

Mais j'ai aussi trouvé cette erreur EntityManagerFactoryBuilderImpl.java(jpa class : org.hibernate.jpa.boot.internal) dans la méthode EntityManagerFactory build() dans cette ligne :

build error image

Une autre chose intéressante est que les valeurs de configuration de 'persistence.xml' sont correctement lues comme vous pouvez le voir dans cette image. configuration values working

Voici le fichier persistence.xml :

<?xml version="1.0" encoding="UTF-8"?>
    <persistence xmlns="http://java.sun.com/xml/ns/persistence" version="2.0">

        <persistence-unit name="EventsPersistence">
            <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
            <class>beans.CulturalEvent</class>
            <class>beans.Location</class>
            <properties>
                <property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/inventario"/>
                <property name="hibernate.connection.driver_class" value="com.mysql.cj.jdbc.Driver"/>
                <property name="hibernate.connection.username" value="root"/>
                <property name="hibernate.connection.password" value="0001"/>
                <property name="hibernate.connection.dialect" value="MySQLDialect" />
                <property name="hibernate.archive.autodetection" value="class"/>
                <property name="hibernate.show_sql" value="true"/>
                <property name="hibernate.format_sql" value="true"/>
                <property name="hbm2ddl.auto" value="update"/>
            </properties>
        </persistence-unit>
    </persistence>

Merci pour votre temps et votre aide ^^

Demandé el 2 de Avril, 2019 par Andres Cárdenas

Réponse

Trop de publicités?

6voto

coladict avatar
coladict Points 318

Renommer hibernate.connection.dialect a hibernate.dialect dans votre persistence.xml

Je vous suggère également d'utiliser MySQLInnoDBDialect o MySQLMyISAMDialect directement.

Et il faut que ce soit le nom complet de la classe, comme ceci :

<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLInnoDBDialect"/>
Répondu el 2 de Avril, 2019 par coladict (318 Points )

Questions en vedette

Top Tags

Dans notre réseau

Prograide.com

Prograide est une communauté de développeurs qui cherche à élargir la connaissance de la programmation au-delà de l'anglais.
Pour cela nous avons les plus grands doutes résolus en français et vous pouvez aussi poser vos propres questions ou résoudre celles des autres.

Powered by:

Yandex
X