利用Node.js和Express（4.x及以上版本）构建高效文件上传功能

var multipart = require('connect-multiparty');
var multipartMiddleware = multipart();
app.post('/upload', multipartMiddleware, function(req, resp) {
  console.log(req.body, req.files);
  // don't forget to delete all req.files when done 
});

  1 extends layout
  2 
  3 block content                                                                                                                                                                                                                                                               
  4   form(method='post', action='/file/uploading', enctype='multipart/form-data')
  5     input(name='inputFile', type='file', multiple='mutiple')
  6     input(name='btnUp', type='submit',value='上传')

  1 var express = require('express');                                                                                                                                                                                                                                           
  2 var router = express.Router();
  3 var multiparty = require('multiparty');
  4 var util = require('util');
  5 var fs = require('fs');
  6 
  7 /* 上传页面 */
  8 router.get('/', function(req, res, next) {
  9   res.render('index', { title: 'Express' });
 10 });
 11 
 12 /* 上传*/
 13 router.post('/file/uploading', function(req, res, next){
 14   //生成multiparty对象，并配置上传目标路径
 15   var form = new multiparty.Form({uploadDir: './public/files/'});
 16   //上传完成后处理
 17   form.parse(req, function(err, fields, files) {
 18     var filesTmp = JSON.stringify(files,null,2);
 19 
 20     if(err){
 21       console.log('parse error: ' + err);
 22     } else {
 23       console.log('parse files: ' + filesTmp);
 24       var inputFile = files.inputFile[0];
 25       var uploadedPath = inputFile.path;
 26       var dstPath = './public/files/' + inputFile.originalFilename;
 27       //重命名为真实文件名
 28       fs.rename(uploadedPath, dstPath, function(err) {
 29         if(err){
 30           console.log('rename error: ' + err);
 31         } else {
 32           console.log('rename ok');
 33         }
 34       });
 35     }
 36 
 37     res.writeHead(200, {'content-type': 'text/plain;charset=utf-8'});
 38     res.write('received upload:\n\n');
 39     res.end(util.inspect({fields: fields, files: filesTmp}));
 40  });
 41 });
 42 
 43 module.exports = router;