从Node.js服务器上载媒体文件到MongoDB

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

const app = express();
const upload = multer({ dest: 'uploads/' });

app.post('/upload', upload.single('file'), (req, res) => {
  // 处理上传的文件
  const file = req.file;
  // 将文件信息存储到MongoDB中
  // ...
  res.send('文件上传成功');
});

app.listen(3000, () => {
  console.log('服务器已启动');
});

<form action="/upload" method="post" enctype="multipart/form-data">
  <input type="file" name="file">
  <input type="submit" value="上传">
</form>

const mongoose = require('mongoose');

mongoose.connect('mongodb://localhost/mydatabase', { useNewUrlParser: true });

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

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

app.post('/upload', upload.single('file'), (req, res) => {
  const file = req.file;

  // 创建一个新的文件对象
  const newFile = new File({
    filename: file.originalname,
    size: file.size,
    mimetype: file.mimetype,
    path: file.path
  });

  // 将文件对象保存到MongoDB中
  newFile.save((err) => {
    if (err) {
      console.error(err);
      res.status(500).send('文件保存失败');
    } else {
      res.send('文件上传成功');
    }
  });
});