我的应用程序中有这些属性：

spring.first.datasource.jdbc-url=jdbc:oracle:thin:first-datasource-url
spring.first.datasource.username=user1
spring.first.datasource.password=pass1
spring.first.datasource.driver-class-name=oracle.jdbc.OracleDriver

spring.second.datasource.jdbc-url=jdbc:oracle:thin:second-datasource-url
spring.second.datasource.username=user2
spring.second.datasource.password=pass2
spring.second.datasource.driver-class-name=oracle.jdbc.OracleDriver

问题是一个db与ojdbc6兼容，另一个与ojbc8兼容。有没有什么方法可以使每个数据源配置的版本或jar显式化？
这是我的配置文件：

@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
 entityManagerFactoryRef = "firstEntityManagerFactory",
 transactionManagerRef = "firstTransactionManager",
)
public class FirstConfiguration {

    @Bean(name = "firstDataSource")
    @ConfigurationProperties(prefix = "spring.first.datasource")
    public DataSource dataSource() {
        return DataSourceBuilder.create().build();
    }

    @Bean(name = "firstEntityManagerFactory")
    public LocalContainerEntityManagerFactoryBean barEntityManagerFactory(EntityManagerFactoryBuilder builder,
            @Qualifier("firstDataSource") DataSource dataSource) {
        return builder.dataSource(dataSource).build();
    }

    @Bean(name = "firstTransactionManager")
    public PlatformTransactionManager firstTransactionManager(
            @Qualifier("firstEntityManagerFactory") EntityManagerFactory firstEntityManagerFactory) {
        return new JpaTransactionManager(firstEntityManagerFactory);
    }

    @Bean(name = "firstJdbcTemplate")
    public JdbcTemplate jdbcTemplateFirst(@Qualifier("firstDataSource") DataSource dataSource) {
        return new JdbcTemplate(dataSource);
    }

}