javascript - 使用axios接收到403错误时如何停止writestream创建文件

Question

我正在使用axios下载图像并将其保存在本地。我从https://stackoverflow.com/a/61269447/7468791取得了以下答案，该答案对于较大的图像非常有用，以确保它们在写入之前已完全下载。
但是，某些图片网址返回403错误。我仍然为这些文件创建了一个图像文件，尽管它是一个空文件。我该如何调整代码，以便如果get请求收到403错误，它将不会尝试编写任何内容？

export async function downloadFile(fileUrl: string, outputLocationPath: string) {
const writer = createWriteStream(outputLocationPath);

return Axios({
  method: 'get',
  url: fileUrl,
  responseType: 'stream',
}).then(response => {

  //ensure that the user can call `then()` only when the file has
  //been downloaded entirely.

  return new Promise((resolve, reject) => {
    response.data.pipe(writer);
    let error = null;
    writer.on('error', err => {
      error = err;
      writer.close();
      reject(err);
    });
    writer.on('close', () => {
      if (!error) {
        resolve(true);
      }
      //no need to call the reject here, as it will have been called in the
      //'error' stream;
    });
  });
});

}

Answer 1

响应代码应该在response.status中可用，然后您可以检查并有条件地拒绝 promise 。