Google drive API downloading file nodejs

问题

Im trying to get the contents of a file using the google drive API v3 in node.js. I read in this documentation I get a stream back from drive.files.get({fileId, alt: 'media'})but that isn't the case. I get a promise back.

https://developers.google.com/drive/api/v3/manage-downloads

Can someone tell me how I can get a stream from that method?

回答1:

I believe your goal and situation as follows.

You want to retrieve the steam type from the method of drive.files.get.
You want to achieve this using googleapis with Node.js.
You have already done the authorization process for using Drive API.

For this, how about this answer? In this case, please use responseType. Ref

Pattern 1:

In this pattern, the file is downloaded as the stream type and it is saved as a file.

Sample script:

var dest = fs.createWriteStream("###");  // Please set the filename of the saved file.
drive.files.get(
  {fileId: id, alt: "media"},
  {responseType: "stream"},
  (err, {data}) => {
    if (err) {
      console.log(err);
      return;
    }
    data
      .on("end", () => console.log("Done."))
      .on("error", (err) => {
        console.log(err);
        return process.exit();
      })
      .pipe(dest);
  }
);

Pattern 2:

In this pattern, the file is downloaded as the stream type and it is put to the buffer.

Sample script:

drive.files.get(
  {fileId: id, alt: "media",},
  {responseType: "stream"},
  (err, { data }) => {
    if (err) {
      console.log(err);
      return;
    }
    let buf = [];
    data.on("data", (e) => buf.push(e));
    data.on("end", () => {
      const buffer = Buffer.concat(buf);
      console.log(buffer);
    });
  }
);

Reference:

Google APIs Node.js Client

来源：https://stackoverflow.com/questions/62476413/google-drive-api-downloading-file-nodejs

标签

node.js

google-drive-api