How to convert request file to base64 string in nodejs

Question

I have file coming in request.file object. If I console.log(request.file) It prints

{
  fieldname: 'file',
  originalname: 'Screenshot from 2021-06-23 18-34-25.png',
  encoding: '7bit',
  mimetype: 'image/png',
  destination: 'public/assets',
  filename: 'file-1628356843810.png',
  path: 'public/assets/file-1628356843810.png',
  size: 620962
}

Now I want to convert file to base64 string and I did

  const encoded = request.file?.buffer.toString("base64")
  console.log(encoded)

It says

TypeError: Cannot read property 'toString' of undefined

Does this answer your question? [How can I check for an empty/undefined/null string in JavaScript?](https://stackoverflow.com/questions/154059/how-can-i-check-for-an-empty-undefined-null-string-in-javascript) — Hazel へいぜる, Aug 09 '21 at 17:35

score -3 · Answer 1 · edited Aug 09 '21 at 12:39

-3

const fs = require('fs');
// read binary data of the file
const binaryData = fs.readFileSync(request.file);
// convert binary data to base64 string
const base64String = new Buffer(binaryData).toString('base64');

edited Aug 09 '21 at 12:39

Tyler2P

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answered Aug 07 '21 at 17:55

Souvanik Dev

81
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Don't only post code as an answer but provide an explanation of what your code does and how it helps the OP. – Tyler2P Aug 07 '21 at 18:09
The code clearly had comments before each line. – Wai Ha Lee Aug 08 '21 at 04:39
Please see the comments. – Souvanik Dev Aug 08 '21 at 11:58
1

This doesn't actually answer the question at hand. Please take some time to elaborate on your answer. Explain some things like *how* it solves the problem. – Hazel へいぜる Aug 09 '21 at 17:34

How to convert request file to base64 string in nodejs

1 Answers1