如何使用Fetch API下载和保存文件? (Node.js) [英] How can I download and save a file using the Fetch API? (Node.js)

问题描述

我拥有一个可能很大的文件(100+ Mb)的URL，如何使用访存将其保存在本地目录中?

I have the url to a possibly large (100+ Mb) file, how do I save it in a local directory using fetch?

我环顾四周，但是似乎没有很多资源/教程.

I looked around but there don't seem to be a lot of resources/tutorials on how to do this.

谢谢！

推荐答案

使用Fetch API，您可以编写一个可以从如下网址下载的函数:

Using the Fetch API you could write a function that could download from a URL like this:

const downloadFile = (async (url, path) => {
  const res = await fetch(url);
  const fileStream = fs.createWriteStream(path);
  await new Promise((resolve, reject) => {
      res.body.pipe(fileStream);
      res.body.on("error", reject);
      fileStream.on("finish", resolve);
    });
});

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