在Spring REST应用程序中成功验证后，为什么Principal为null？

Question

我现在正在Spring rest应用程序中实现身份验证，所以我从Electron.js应用程序发送请求，Spring处理所有内容。

所以现在如果我通过浏览器登录它会保存我的对象并成功返回Principal。但是，如果我登录并尝试通过Electron.js应用程序发送返回该Principal的请求，则会抛出NullException。

@GetMapping("/user")
public String user(Principal principal)
{
    return principal.getName(); // null via rest app (electron app), not null via browser (authenticated)
}

@GetMapping("/loginRequest") // this is method that requires user's credentials
public UserModel login(Principal principal)
{
   return userDAO.findByUsername(principal.getName()); // signs in on both (browser and rest app), returns json object
}

配置看起来像这样：

    @Autowired
    private MongoUserDetailsService userDetailsService;

    @Override
    public void configure(HttpSecurity http) throws Exception
    {
        http.cors().and()
                .csrf().disable()
                .authorizeRequests()
                .antMatchers("/loginRequest").authenticated()
                .and()
                .httpBasic();
    }

    @Override
    public void configure(AuthenticationManagerBuilder builder) throws Exception
    {
        builder.userDetailsService(userDetailsService);
    }

    @Bean
    public PasswordEncoder passwordEncoder()
    {
        return new BCryptPasswordEncoder();
    }

来自Electron.js的请求

axios(API + 'loginRequest', {
          method: 'GET',
          auth: {
            username: this.username, // Both username & pass are taken from fields
            password: this.password
          }
        })
        .then(response => {
          this.userObject = response.data;
        }).catch(err => this.showError('Username or password is invalid', 2));

先感谢您！