小编Vik*_*ngh的帖子

我需要捕获错误401响应代码，以便从令牌端点获取新令牌后可以重试。我正在使用fetch方法从API获取数据。

   const request: Request = new Request(url.toString(), {
        headers: this.defaultRequestHeaders,
        method: "get",
        mode: "cors"
    });

   const headers: Headers = new Headers({
        "Accept": "application/json",
        "Content-Type": "application/json"
    });

   fetch(request)
        .then(function(response)
         {
          ///Logic code
         })
        .catch(function(error)
        {
          ///if status code 401. Need help here
        });