Caused by: java.lang.IllegalArgumentException: 'dataSource' or 'jdbcTemplate' is required

A Simple DAO class extends JdbcDaoSupport, but, unable to inject or @autowired a “dataSource”, the method setDataSource is final, can’t override.

Solution

To quickly fix it, uses @PostConstruct to inject the dataSource like this :

@Repository
public class UserDetailsDaoImpl extends JdbcDaoSupport implements UserDetailsDao {

 @Autowired
 private DataSource dataSource;

 @PostConstruct
 private void initialize() {
  setDataSource(dataSource);
 }

}

Alternatively, create an own implementation of JdbcDaoSupport class, and do whatever you want. Dive inside the source code of JdbcDaoSupport, it’s just a simple helper class to create a jdbcTemplate.


Source :- https://www.mkyong.com/spring/how-to-autowire-datasource-in-jdbcdaosupport/