Spring中的事务管理如何配置

public interface PlatformTransactionManager {
  TransactionStatus getTransaction(TransactionDefinition var1) throws TransactionException;

  void commit(TransactionStatus var1) throws TransactionException;

  void rollback(TransactionStatus var1) throws TransactionException;
}

@EnableTransactionManagement //开启事务管理
@ComponentScan("com.springTx") //扫描组件，这里扫描UserDao和UserService
@Configuration
public class MainTxConfig {

  /**
   * 配置数据源
   * @return
   * @throws Exception
   */
    @Bean
    public DataSource dataSorce() throws Exception {
      ComboPooledDataSource comboPooledDataSource = new ComboPooledDataSource();
      comboPooledDataSource.setUser("root");
      comboPooledDataSource.setPassword("123456");
      comboPooledDataSource.setDriverClass("com.mysql.jdbc.Driver");
      comboPooledDataSource.setJdbcUrl("jdbc:mysql://localhost:3306/study");
      return comboPooledDataSource;
    }

    /**
     * jdbc模板操作数据库，这里需要获取到数据源，dataSorce()是从容器中获取已有的组件，而不是重新又创建一个数据源
     * @return
     * @throws Exception
     */
    @Bean
    public JdbcTemplate jdbcTemplate() throws Exception {
      return new JdbcTemplate(dataSorce());
    }

    @Bean
    public PlatformTransactionManager platformTransactionManager() throws Exception {
      return new DataSourceTransactionManager(dataSorce());
    }
}

@Service
public class UserService {

  @Autowired
  private UserDao userDao;

  @Transactional
  public void insertUser(){
    userDao.insert();
    int n = 1/0;
    System.out.println("插入成功");
  }
}

@Repository
public class UserDao {

  @Autowired
  private JdbcTemplate jdbcTemplate;

  public void insert(){
    String sql = "insert into user (name,age) value(?,?)";
    String name = UUID.randomUUID().toString().substring(1,7);
    jdbcTemplate.update(sql,name, 20);
  }
}

public class Txtest {
  @Test
  public void test(){
    //创建容器
    AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(MainTxConfig.class);
    UserService userService = applicationContext.getBean(UserService.class);
    userService.insertUser();
    applicationContext.close();
  }
}