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Solucionado (ver solução)

Conexão null e não acha a página (404)

Segue erro:

WARN  [org.jboss.jca.core.connectionmanager.pool.strategy.OnePool] (ServerService Thread Pool -- 63) IJ000604: Throwable while attempting to get a new connection: null: javax.resource.ResourceException: IJ031084: Unable to create connection
    at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createLocalManagedConnection(LocalManagedConnectionFactory.java:345)
    at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.getLocalManagedConnection(LocalManagedConnectionFactory.java:352)
    at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createManagedConnection(LocalManagedConnectionFactory.java:287)
    at org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreConcurrentLinkedDequeManagedConnectionPool.createConnectionEventListener(SemaphoreConcurrentLinkedDequeManagedConnectionPool.java:1327)
    at org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreConcurrentLinkedDequeManagedConnectionPool.getConnection(SemaphoreConcurrentLinkedDequeManagedConnectionPool.java:499)
    at org.jboss.jca.core.connectionmanager.pool.AbstractPool.getSimpleConnection(AbstractPool.java:632)
    at org.jboss.jca.core.connectionmanager.pool.AbstractPool.getConnection(AbstractPool.java:604)
    at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.getManagedConnection(AbstractConnectionManager.java:624)
    at org.jboss.jca.core.connectionmanager.tx.TxConnectionManagerImpl.getManagedConnection(TxConnectionManagerImpl.java:430)
    at org.jboss.jca.core.connectionmanager.AbstractConnectionManager.allocateConnection(AbstractConnectionManager.java:789)
    at org.jboss.jca.adapters.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:138)
    at org.jboss.as.connector.subsystems.datasources.WildFlyDataSource.getConnection(WildFlyDataSource.java:64)
    at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122)
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentInitiator.java:180)
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:68)
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35)
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:88)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:254)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:228)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:207)
    at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:51)
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:94)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:207)
    at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.handleTypes(MetadataBuildingProcess.java:352)
    at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:111)
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:848)
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:875)
    at 

Aparentemente não tem nada de diferente do que foi apresentado na aula. Estou meio confuso com esse erro. Se precisar posto os códigos.

5 respostas

Fala Elison, tudo bem?

Como está sua URL de conexão? Você está usando o Wildfly na versão 10 Final?

Estou usando o WildFly 12. Além disso quando executo eu dou run on server direto do xhtml. Vem com /faces/ antes da pasta que eu criei. O endereço do JNDI / JTA está igual no standalon.xml (não estou usando o full)

Segue meu persistence.xml

Segue meu persistence.xml

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    version="2.1" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence
    http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
    <persistence-unit name="casadocodigo-dev" transaction-type="JTA">
        <description>Dev persistence unit</description>
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
       <!-- java transaction api || JNDI (NESSE CASO O MYSQL SERÁ EM PARTE CONFIGURADO DIRETO NO WILDFLY) -->
        <jta-data-source>java:jboss/datasources/casadocodigoDS</jta-data-source>
        <properties>
            <property name="hibernate.hbm2ddl.auto" value="update"/>
            <property name="hibernate.show_sql" value="true" />
            <property name="hibernate.format_sql" value="true" />
            <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect"/>
        </properties>
    </persistence-unit>
</persistence>

Quanto a URL CONNECTIONS está assim:

<datasource jndi-name="java:jboss/datasources/casadocodigoDS"
                        pool-name="casadocodigoDS">
                        <connection-url>jdbc:mysql://localhost:3306/casadocodigo_javaee</connection-url>
                        <connection-property name="DatabaseName">
                            casadocodigo_javaee
                        </connection-property>
                        <driver>mysql</driver>
                        <pool>
                            <min-pool-size>10</min-pool-size>
                            <max-pool-size>20</max-pool-size>
                        </pool>
                        <security>
                            <user-name>root</user-name>
                            <password>1234</password>
                        </security>
                </datasource>
                <drivers>
                    <driver name="mysql" module="com.mysql">
                            <datasource-class>com.mysql.jdbc.jdbc2.optional.MysqlDataSource</datasource-class>
                    </driver>
solução

Descobri o que aconteceu. Eu estava usando uma versão recente do MySql e por isso não estava funcionando. (estava usando a versão 8.0) Voltei a usar a 5.5 e funcionou. Claro que eu acho isso incoerente, pois entende-se que se a versão é mais nova, vai contemplar aplicações configuradas para versões anteriores.... mas enfim... graças a Deus deu certo. Obrigado