Spring事务传播行为问题解决

public class UserServiceImpl implements UserService{
 
  @Autowired
  private UserDao userDao;
  @Autowired
  private MsgDao msgDao;
  @Autowired
  private MsgService msgService;
    @Autowired
    private UserService userService;
 
   
  @Transactional(propagation = Propagation.REQUIRED)
  public void saveUser(User user) throws Exception {
    System.out.println(user.toString());
    try {
      userDao.saveUser(user);
      int i = 1/0;
//     saveUser2(user);
    } catch (Exception e) {
//     msgService.saveMsg();
//           this.saveMsg();
      userService.saveMsg();
      throw new RuntimeException();
    }
  }
   
  @Transactional(propagation = Propagation.REQUIRES_NEW)
  public void saveMsg() {
    TbMsg msg = TbMsg.builder().name("xiaocao").msg("xiaoxiao").age(27).build();
    msgDao.saveMsg(msg);
  }
}