Bean.java

@Bean
ConnectionFactoryInitializer initializer(@Qualifier("connectionFactory") ConnectionFactory connectionFactory) {
  ConnectionFactoryInitializer initializer = new ConnectionFactoryInitializer();
  initializer.setConnectionFactory(connectionFactory);
  ResourceDatabasePopulator resource =
      new ResourceDatabasePopulator(new ClassPathResource("schema.sql"));
  initializer.setDatabasePopulator(resource);
  return initializer;
}