@Bean
public DataSource dataSource() {
    // load BasicDbcpPooledDataSourceCreator before TomcatJdbcPooledDataSourceCreator
    List<String> dataSourceNames = Arrays.asList("BasicDbcpPooledDataSourceCreator", "TomcatJdbcPooledDataSourceCreator", "HikariCpPooledDataSourceCreator", "TomcatDbcpPooledDataSourceCreator");
    DataSourceConfig dbConfig = new DataSourceConfig(dataSourceNames);
    return connectionFactory().dataSource(dbConfig);
}