DataSource dataSource = new DriverManagerDataSource();

dataSource.setDriverClassName("com.<a style='color:#f60; text-decoration:underline;' href="https://www.php.cn/zt/15713.html" target="_blank">mysql</a>.jdbc.Driver");
dataSource.setUrl("jdbc:mysql://localhost:3306/my_database");
dataSource.setUsername("username");
dataSource.setPassword("password");

@Entity
public class User {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @Column(nullable = false)
    private String name;

    @Column(nullable = false)
    private String email;

    // Getters and setters omitted for brevity
}

public interface UserRepository extends CrudRepository<User, Long> {
    User findByName(String name);
}

public class UserService {

    @Autowired
    private UserRepository userRepository;

    public User findByName(String name) {
        return userRepository.findByName(name);
    }
}