[url]http://www.mkyong.com/spring/spring-jdbctemplate-jdbcdaosupport-examples/[/url]

private DataSource dataSource;
  private JdbcTemplate jdbcTemplate;

  public void setDataSource(DataSource dataSource) {
    this.dataSource = dataSource;
  }

  public void insert(Customer customer){

    String sql = "INSERT INTO CUSTOMER " +
      "(CUST_ID, NAME, AGE) VALUES (?, ?, ?)";

    jdbcTemplate = new JdbcTemplate(dataSource);

    jdbcTemplate.update(sql, new Object[] { customer.getCustId(),
      customer.getName(),customer.getAge()  
    });

  }

---------------------------------------------

public class JdbcCustomerDAO extends JdbcDaoSupport implements CustomerDAO
  {
     //no need to set datasource here
     public void insert(Customer customer){

    String sql = "INSERT INTO CUSTOMER " +
      "(CUST_ID, NAME, AGE) VALUES (?, ?, ?)";

    getJdbcTemplate().update(sql, new Object[] { customer.getCustId(),
        customer.getName(),customer.getAge()  
    });

  }