Caused by: java.sql.SQLException: Unable to load authentication plugin 'caching_sha2_password'.
Estou utilizando java 8 MySql 8 ou seja é o projeto Livraria que baixei..
xml version="1.0" encoding="UTF-8"?>
<persistence-unit name="livraria" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<class>br.com.caelum.livraria.modelo.Livro</class>
<class>br.com.caelum.livraria.modelo.Autor</class>
<properties>
<property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver" />
<property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost/livrariadb" />
<property name="javax.persistence.jdbc.user" value="root" />
<property name="javax.persistence.jdbc.password" value="123456789" />
<property name="hibernate.hbm2ddl.auto" value="update" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect" />
</properties>
</persistence-unit>