无法处理401个错误

// 示例代码：基本认证
fetch('https://example.com/api/resource', {
  headers: {
    'Authorization': 'Basic ' + btoa('username:password')
  }
})
.then(response => {
  if (response.status === 401) {
    throw new Error('Unauthorized');
  }
  return response.json();
})
.catch(error => console.error(error));

// 示例代码：令牌认证
fetch('https://example.com/api/resource', {
  headers: {
    'Authorization': 'Bearer ' + token
  }
})
.then(response => {
  if (response.status === 401) {
    // 获取新的令牌
    return refreshToken().then(newToken => {
      return fetch('https://example.com/api/resource', {
        headers: {
          'Authorization': 'Bearer ' + newToken
        }
      });
    });
  }
  return response.json();
})
.catch(error => console.error(error));