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express-fileupload

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express-fileupload

Simple express file upload middleware that wraps around Busboy

  • 1.5.1
  • latest
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  • npm
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What is express-fileupload?

The express-fileupload npm package is a middleware for handling file uploads in Express applications. It simplifies the process of uploading files to a server by providing an easy-to-use interface and various configuration options.

What are express-fileupload's main functionalities?

Basic File Upload

This feature allows for basic file uploads. The code sets up an Express server with the express-fileupload middleware, and defines a POST route to handle file uploads. Uploaded files are moved to a specified directory on the server.

const express = require('express');
const fileUpload = require('express-fileupload');
const app = express();

app.use(fileUpload());

app.post('/upload', (req, res) => {
  if (!req.files || Object.keys(req.files).length === 0) {
    return res.status(400).send('No files were uploaded.');
  }

  let sampleFile = req.files.sampleFile;

  sampleFile.mv('/somewhere/on/your/server/filename.jpg', function(err) {
    if (err)
      return res.status(500).send(err);

    res.send('File uploaded!');
  });
});

app.listen(3000, () => {
  console.log('Server started on http://localhost:3000');
});

File Size Limit

This feature allows setting a file size limit for uploads. The code configures the express-fileupload middleware to limit the file size to 50MB.

const express = require('express');
const fileUpload = require('express-fileupload');
const app = express();

app.use(fileUpload({
  limits: { fileSize: 50 * 1024 * 1024 }, // 50MB
}));

app.post('/upload', (req, res) => {
  if (!req.files || Object.keys(req.files).length === 0) {
    return res.status(400).send('No files were uploaded.');
  }

  let sampleFile = req.files.sampleFile;

  sampleFile.mv('/somewhere/on/your/server/filename.jpg', function(err) {
    if (err)
      return res.status(500).send(err);

    res.send('File uploaded!');
  });
});

app.listen(3000, () => {
  console.log('Server started on http://localhost:3000');
});

Using Temp Files

This feature allows the use of temporary files during the upload process. The code configures the express-fileupload middleware to use temporary files and specifies a directory for these temp files.

const express = require('express');
const fileUpload = require('express-fileupload');
const app = express();

app.use(fileUpload({
  useTempFiles: true,
  tempFileDir: '/tmp/'
}));

app.post('/upload', (req, res) => {
  if (!req.files || Object.keys(req.files).length === 0) {
    return res.status(400).send('No files were uploaded.');
  }

  let sampleFile = req.files.sampleFile;

  sampleFile.mv('/somewhere/on/your/server/filename.jpg', function(err) {
    if (err)
      return res.status(500).send(err);

    res.send('File uploaded!');
  });
});

app.listen(3000, () => {
  console.log('Server started on http://localhost:3000');
});

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Package last updated on 13 Jul 2024

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