使用Express和Node在MongoDB中上传文本文件

npm install express multer mongoose

const express = require('express');
const multer = require('multer');
const mongoose = require('mongoose');

const storage = multer.diskStorage({
  destination: function (req, file, cb) {
    cb(null, 'uploads/');
  },
  filename: function (req, file, cb) {
    cb(null, file.originalname);
  }
});

const upload = multer({ storage: storage });

mongoose.connect('mongodb://localhost/mydatabase', { useNewUrlParser: true, useUnifiedTopology: true })
  .then(() => console.log('MongoDB connected'))
  .catch(err => console.log(err));

const fileSchema = new mongoose.Schema({
  filename: String,
  path: String
});

const File = mongoose.model('File', fileSchema);

const app = express();

app.post('/upload', upload.single('file'), (req, res) => {
  const file = new File({
    filename: req.file.originalname,
    path: req.file.path
  });

  file.save()
    .then(() => res.send('File uploaded successfully'))
    .catch(err => console.log(err));
});

app.listen(3000, () => console.log('Server started on port 3000'));