Problemet er løst ved at oprette to bønner. Separat bean oprettes for DataSource og NamedParameterJdbcTemplate.
@Bean
public DataSource dataSource(){
System.out.println(driverClass+" "+ url+" "+username+" "+password);
DriverManagerDataSource source = new DriverManagerDataSource();
source.setDriverClassName(driverClass);
source.setUrl(url);
source.setUsername(username);
source.setPassword(password);
return source;
}
@Bean
public NamedParameterJdbcTemplate namedParameterJdbcTemplate(){
NamedParameterJdbcTemplate namedParameterJdbcTemplate = new NamedParameterJdbcTemplate(this.dataSource());
return namedParameterJdbcTemplate;
}