register中userModel，userDO获取不到id，都获取不到id

@Override

@Transactional

public void register(UserModel userModel) throws BusinessException {

if (userModel == null) {

throw new BusinessException(EmBusinessError.PARAMETER_VALIDATION_ERROR);

}

if (StringUtils.isEmpty(userModel.getName()) || userModel.getGender() == null || userModel.getAge() == null

|| StringUtils.isEmpty(userModel.getTelphone())) {

throw new BusinessException(EmBusinessError.PARAMETER_VALIDATION_ERROR);

}

// 实现Model -> DataObject方法

UserDO userDO = convertFromModel(userModel);

userModel.setId(userDO.getId());

try {

userDOMapper.insertSelective(userDO);

} catch (DuplicateKeyException ex) {

throw new BusinessException(EmBusinessError.PARAMETER_VALIDATION_ERROR, "手机号已重复注册");

}

UserPasswordDO userPasswordDO = convertPasswordFromModel(userModel);

userPasswordDOMapper.insertSelective(userPasswordDO);

return;

}

private UserDO convertFromModel(UserModel userModel) {

if (userModel == null) {

return null;

}

UserDO userDO = new UserDO();

BeanUtils.copyProperties(userModel, userDO);

return userDO;

}

private UserPasswordDO convertPasswordFromModel(UserModel userModel) {

if (userModel == null) {

return null;

}

UserPasswordDO userPasswordDO = new UserPasswordDO();

userPasswordDO.setEncrptPassword(userModel.getEncrptPassword());

userPasswordDO.setUserId(userModel.getId());

return userPasswordDO;

}