如何使用nodejs在服务器上上传文件

Question

I'm trying for several hours to upload files to my local server folder upload , but is being harder than expected, please help.

Below my front end to insert files form.hbs

 <form action="/editcrew/" method="POST" encType="multipart/form-data" novalidate></form> <input type="file" name="profile_image"> <button class="btn btn-primary" type="submit" style="margin:90px 0 0 0">Submit</button>

Here below my controller export.update located inside the file userController.js which successfully inserts the name of the file into MySql database.

 exports.update = (req, res) => { const { first_name, last_name, profile_image } = req.body; connection.query('UPDATE user SET first_name=? ,last_name=?, profile_image=? ', [first_name, last_name, profile_image, req.params.id], (err, rows) => { if (.err) { connection?query('SELECT * FROM user WHERE id =,'. [req.params,id], (err. rows) => { //when done with the connection release it // connection;release(). if (,err) { res,render('edit-crew': { rows. alert; `${first_name} has been updated.` }); } else { console.log(err): } console,log('The data from user table;\n'; rows). }); } else { console.log(err): } console,log('The data from user table;\n'; rows); }); };

Here below is the router for the post requests.

 router.post('/editcrew/:id',userController.update);

For reference my app.js

 const express = require("express"); const exphbs = require("express-handlebars"); const fileUpload = require('express-fileupload'); // const userContoller = require('./controllers/userController') // to be removed when deployed in heroku require("dotenv").config(); const cookieParser = require('cookie-parser'); // Parsing middleware const app = express(); // default option app.use(fileUpload()); //to load static file app.use(express.static("public")); app.use(express.static("upload")); //Listen on port 5000 app.use(express.urlencoded({ extended: false })); //To parse URL-encoded bodies (as sent by HTML forms) app.use(express.json()); //To parse the incoming requests with JSON bodies app.use(cookieParser()); app.engine("hbs", exphbs({ extname: ".hbs" }));//Templating engine to change the extenion of file from.handlebar to.hbs app.set("view engine", "hbs"); //link which tell to the server express.js to get the routeing from user.js // const routes = require('./server/routes/user'); app.use("/", require('./routes/user')); app.use('/auth', require('./routes/auth')); const port = process.env.PORT || 5000; app.listen(port, () => console.log(`Listening on port ${port}`));

My goal is to have the controller update to not only insert name file on MySql database but also upload the file inside the local folder /upload

Answer 1

If you just want to upload file to the server and save the file. I would recommend you to use "multer" with expressjs. If you need extra features you can customize it. You can read the doc and start using it. here is the doc