Question

I’m just beginning with Spring framework. I’m also using DBCP pooling and i’m still not sure how to work right with jdbcTemplate.

It is best practice to reuse created/injected jdbcTemplate instance between multiple DAOs or it is right to create jdbcTemplate for each DAO ?

I’m currently using annotation approach:

public class FooDAO  {

  private JdbcTemplate jdbcTemplate;

  @Autowired
  public void setDatasource( DataSource dataSource ) {
     this.jdbcTemplate = new JdbcTemplate( dataSource );
  }
}

I’m aware about JdbcDaoSupport, but I don’t know how to inject datasource, because method setDatasource is marked as final.

But still, I’m not sure if is best practice to reuse created jdbcTemplate or not.

Answer 1

Inject it in and share it. Don’t call “new”; that takes control out of the hands of the Spring bean factory.