How to save a file received via post?

Question

HTML

The file is large, from 100MB to 1GB, so I don't want to keep it in RAM, that is, I need to save it to disk for temporary use. How to take it correctly, I have express, I looked at the documentation on the official site and did not master it, please explain to whom it is not difficult.

Answer 1

In general, here is a solution I got, maybe it will be useful to someone.

const express = require('express'), // Web сервер
app = express(), // Привязываем express к нашему "приложению"
multiparty = require('multiparty'); // Для сохранения файла

// Обработчик запросов
app.post('*', function(req, res) {
  var form = new multiparty.Form(); 
  form.parse(req, function(err, fields, files) { 
    console.log(files.txt[0].path); // Выводим в консоль адрес файла(txt это значение поля name, то есть в данном случае name="txt")
  })
});

txt is the value of name in the imput to be saved.

Answer 2

And it seems to be not stored in the RAM, but as a temporary file
https://www.w3schools.com/nodejs/nodejs_uploadfiles.asp