进行用户注册，能够成功的注册，但是Nick列显示的总是false。以下是我的代码：

//service代码
@Override
@Transactional//事务提交，防止出错
public void register(UserModel userModel) throws BusinessException {
    if(userModel==null){
        throw new BusinessException(EmBussinessError.PARAMETER_VALIDATION_ERROR,"对象为空");
    }
   if(StringUtils.isEmpty(userModel.getNick())||userModel.getGender()==null||
   userModel.getAge()==null||StringUtils.isEmpty(userModel.getTelphone())){
       throw new BusinessException(EmBussinessError.PARAMETER_VALIDATION_ERROR,"入参不合法");
   }
   UserDO userDO=convertFromUserModel(userModel);//实现model到dataobject方法；
   userDOMapper.insertSelective(userDO);
   userModel.setId(userDO.getId());
   UserPasswordDO userPasswordDO=convertPasswprdFromModel(userModel);//实现model到dataobject
    userPasswordDOMapper.insertSelective(userPasswordDO);

   return;
}
//将model转化为userDo
public UserDO convertFromUserModel(UserModel userModel){
    if(userModel==null){
        return null;
    }
    UserDO userDO=new UserDO();
    BeanUtils.copyProperties(userModel,userDO);
    return userDO;
}
//获取password信息
private UserPasswordDO convertPasswprdFromModel(UserModel userModel){
    if(userModel==null){
        return null;
    }
    UserPasswordDO  userPasswordDO=new UserPasswordDO();
    userPasswordDO.setEncrptpassword(userModel.getEncrptpassword());
    userPasswordDO.setUserId(userModel.getId());
    return userPasswordDO;
}

//controller代码 
//用户注册接口
@RequestMapping(value = "/register",method = {RequestMethod.POST},consumes = {CONTENT_TYPE_FORMED})//获得个头图片的映射
@ResponseBody
public CommonReturnType register(@RequestParam(name="telphone")String telphone,
                                 @RequestParam(name="otpCode")String otpCode,
                                 @RequestParam(name="nick")String nick,
                                 @RequestParam(name="gender")String gender,
                                 @RequestParam(name="age")Integer age,
                                 @RequestParam(name="password")String password) throws BusinessException, UnsupportedEncodingException, NoSuchAlgorithmException {
    //验证手机号和对应的otpcode相符合
    String insessionOtpCode= (String) this.httpServletRequest.getSession().getAttribute(telphone);
    if(!StringUtils.equals(otpCode,insessionOtpCode)){
        throw new BusinessException(EmBussinessError.PARAMETER_VALIDATION_ERROR,"短信验证码不正确");
    }

    //用户的注册流程
    UserModel userModel=new UserModel();
    userModel.setNick(nick);
    userModel.setGender(gender);
    userModel.setAge(age);
    userModel.setTelphone(telphone);
    userModel.setEncrptpassword(this.EncodeByMd5(password));

    userService.register(userModel);
    return CommonReturnType.create(null);
}

描述清楚一点