<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
    <persistence-unit name="bolsa" transaction-type="RESOURCE_LOCAL">
        <provider>org.hibernate.ejb.HibernatePersistenceProvider</provider>
        <class>bean.Permissao</class>
        <class>bean.Usuario</class>
        <class>bean.Pagina</class>
        <exclude-unlisted-classes>false</exclude-unlisted-classes>
        <properties>
            <!-- dados da conexao -->
            <property name="javax.persistence.jdbc.driver_class" value="com.mysql.jdbc.Driver" />
            <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/bolsa" />
            <property name="javax.persistence.jdbc.user" value="root" />
            <property name="javax.persistence.jdbc.password" value="" />
            <!--  propriedades do hibernate -->
            <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect"/>
            <property name="hibernate.format_sql" value="true"/>

        </properties>
    </persistence-unit>
</persistence>

@PersistenceUnit
private final EntityManagerFactory factory;
private final EntityManager manager;

private __constructor() {
    this.factory = Persistence.createEntityManagerFactory("bolsa");
    this.manager = factory.createEntityManager();
}

<dependency>
   <groupId>org.hibernate</groupId>
    <artifactId>hibernate-core</artifactId>
    <version>5.2.11.Final</version>
</dependency>
<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-entitymanager</artifactId>
    <version>5.2.11.Final</version>
</dependency>
<dependency>
    <groupId>org.hsqldb</groupId>
    <artifactId>hsqldb</artifactId>
    <version>2.4.0</version>
</dependency>
<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-jpamodelgen</artifactId>
    <version>5.2.11.Final</version>
    <scope>provided</scope>
</dependency>