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All right, here’s the deal. I am doing a java web project and when I add mysql-Connector-java as dependency within the pom.xml folder, the project does not communicate with the database.
However, what’s funny is that when I lower the mysql . jar and add it in the build path, then yes it communicates with the database normally. But I need the project to make the connection as a database using the dependency in the pom.xml file to not give problem there in front.
I am using Hibernate for connection to the bank
Folder pom.xml:
<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>br.pro.delfino.drogaria</groupId>
<artifactId>Drogaria</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<!-- Codificação dos caracteres -->
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<!-- Parâmetros de execução -->
<build>
<!-- Nome do projeto empacotado -->
<finalName>Drogaria</finalName>
<!-- Plugins -->
<plugins>
<!-- Compilador -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
<!-- Dependências -->
<dependencies>
<!-- Hibernate Core -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>4.3.11.Final</version>
</dependency>
<!-- MySQL dependencia -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.15</version>
</dependency>
<!-- junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13</version>
<scope>test</scope>
</dependency>
<!-- JSF -->
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.faces</artifactId>
<version>2.2.20</version>
</dependency>
<!-- primefaces -->
<dependency>
<groupId>org.primefaces</groupId>
<artifactId>primefaces</artifactId>
<version>7.0</version>
</dependency>
<!--OmniFaces: https://mvnrepository.com/artifact/org.omnifaces/omnifaces -->
<dependency>
<groupId>org.omnifaces</groupId>
<artifactId>omnifaces</artifactId>
<version>1.13</version>
</dependency>
</dependencies>
</project>
Pasta Hibernate.cfg:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<!-- Configurações de conexão com o banco de dados -->
<property name="hibernate.connection.driver_class">com.mysql.cj.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://127.0.0.1:3306/drogaria</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password">xyc2dy9t</property>
<!-- Pool de Conexões -->
<property name="connection.pool_size">1</property>
<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property>
<!-- Gerenciamento do Contexto das Sessões -->
<property name="current_session_context_class">thread</property>
<!-- Cache de Segundo Nível -->
<property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property>
<!-- Mostra as SQLs Geradas -->
<property name="show_sql">true</property>
<!-- Cria as tabelas do banco de dados -->
<property name="hbm2ddl.auto">validate</property>
<!-- Mapeamento das entidades -->
<mapping class="br.pro.delfino.drogaria.domain.Cidade" />
<mapping class="br.pro.delfino.drogaria.domain.Cliente" />
<mapping class="br.pro.delfino.drogaria.domain.Estado" />
<mapping class="br.pro.delfino.drogaria.domain.Fabricante" />
<mapping class="br.pro.delfino.drogaria.domain.Funcionario" />
<mapping class="br.pro.delfino.drogaria.domain.ItemVenda" />
<mapping class="br.pro.delfino.drogaria.domain.Pessoa" />
<mapping class="br.pro.delfino.drogaria.domain.Produto" />
<mapping class="br.pro.delfino.drogaria.domain.Usuario" />
<mapping class="br.pro.delfino.drogaria.domain.Venda" />
</session-factory>
</hibernate-configuration>
I am using the Hibernate class to generate the connection as follows:
package br.pro.delfino.drogaria.util;
import org.hibernate.SessionFactory;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;
public class HibernateUtil {
private static SessionFactory fabricaDeSessoes = criarFabricaDeSessoes();
public static SessionFactory getFabricaDeSessoes() {
return fabricaDeSessoes;
}
private static SessionFactory criarFabricaDeSessoes() {
try {
Configuration configuracao = new Configuration().configure();
ServiceRegistry registro = new StandardServiceRegistryBuilder().applySettings(configuracao.getProperties()).build();
SessionFactory fabrica = configuracao.buildSessionFactory(registro);
return fabrica;
} catch (Throwable ex) {
System.err.println("A fábrica de sessões não pode ser criada " + ex);
throw new ExceptionInInitializerError(ex);
}
}
}