server.js

var express = require('express');                                                                                                                                                                                                                                           
var multiparty = require('multiparty');
var util = require('util');
var fs = require('fs');

var app = express();
app.use(express.static('example'));
app.use(express.static('dist'));
// respond with "hello world" when a GET request is made to the homepage
app.get('/', function(req, res) {
  res.send('hello world');
});

/* 上传*/
app.post('/file/uploading', function(req, res, next){
  //生成multiparty对象，并配置上传目标路径
  var form = new multiparty.Form({uploadDir: './server/temp/'});
  //上传完成后处理
  form.parse(req, function(err, fields, files) {
    var filesTmp = JSON.stringify(files,null,2);

    if(err){
      console.log('parse error: ' + err);
    } else {
      console.log('parse files: ' + filesTmp);
      var inputFile = files.file[0];
      var uploadedPath = inputFile.path;
      var dstPath = './server/files/' + inputFile.originalFilename;
      //重命名为真实文件名
      fs.rename(uploadedPath, dstPath, function(err) {
        if(err){
          console.log('rename error: ' + err);
        } else {
          console.log('rename ok');
        }
      });
    }

    res.writeHead(200, {'content-type': 'text/plain;charset=utf-8'});
    //随机生成一个延迟
    var timeout=Math.ceil(Math.random()*10)+3
    setTimeout(function(){
      res.end('{"success":true}');
    },timeout*1000)
    
 });
});

var server = app.listen(3000, function () {
  var host = server.address().address;
  var port = server.address().port;

  console.log('Example app listening at http://%s:%s', host, port);
});
// module.exports = app;