Spring Boot插入参数

@Repository
public class UserRepository {

    @Autowired
    private JdbcTemplate jdbcTemplate;

    public void insertUser(String username, String password) {
        String sql = "INSERT INTO user (username, password) VALUES (:username, :password)";
        Map<String, Object> params = new HashMap<>();
        params.put("username", username);
        params.put("password", password);
        jdbcTemplate.update(sql, params);
    }
}

@Repository
public class UserRepository {

    @Autowired
    private JdbcTemplate jdbcTemplate;

    public void insertUser(String username, String password) {
        String sql = "INSERT INTO user (username, password) VALUES (?, ?)";
        jdbcTemplate.update(sql, username, password);
    }
}

@Repository
public class UserRepository {

    @Autowired
    private NamedParameterJdbcTemplate jdbcTemplate;

    public void insertUser(String username, String password) {
        String sql = "INSERT INTO user (username, password) VALUES (:username, :password)";
        Map<String, Object> params = new HashMap<>();
        params.put("username", username);
        params.put("password", password);
        jdbcTemplate.update(sql, params);
    }
}