如何在nodejs中从邮递员发送CSV文件并在后台读取文件

$ npm install express-generator -g
$ express myapp
$ cd myapp
$ npm install

$ npm install multer csv-parser

var express = require('express');
var multer  = require('multer');
var csv = require('csv-parser');
var fs = require('fs');

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

app.post('/upload', upload.single('csvFile'), function (req, res, next) {
  var results = [];

  fs.createReadStream(req.file.path)
    .pipe(csv())
    .on('data', function (data) {
      results.push(data);
    })
    .on('end', function () {
      fs.unlinkSync(req.file.path); // 删除上传的临时文件
      res.json(results);
    });
});

app.listen(3000, function () {
  console.log('Server is running on port 3000');
});

$ npm start