multer - req.file总是未定义 [英] multer - req.file always undefined

问题描述

我已经看到了同样的问题的很多答案，但是我还没有找到一个有效的解决方案。我试图制作一个网络应用程序，您可以将文件上传到使用express和multer，而且我有一个问题，即无法上传文件，并且req.file始终未定义。

I've looked at a lot of answer for this same question, but I haven't found a working solution yet. I am trying to make a web app that you can upload files to using express and multer, and I am having a problem that no files are being uploaded and req.file is always undefined.

我的代码如下

'use strict';

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

var app = express();
require('dotenv').load();

app.use(express.static(path.join(__dirname, 'main')));

app.post('/upload', upload.single('upl'), function (req, res, next) {
  // req.file is the `avatar` file
  // req.body will hold the text fields, if there were any
  console.log(req.file);
  res.status(204).end();
})

var port = process.env.PORT || 8080;
app.listen(port,  function () {
    console.log('Node.js listening on port ' + port + '...');
});

表单

    <form class="uploadForm" action="/upload" method="post" enctype="multipart/formdata">
        <label class="control-label">Select File</label>
        <input name="upl" id="input-1" type="file" class="file">
        <input type="submit" value="submit" />
    </form>

帮助非常感谢，这让我疯狂了。

Help very much appreciated, this is driving me crazy.

推荐答案

您的 enctype 略有不正确，应该是 multipart / form-data 而不是 multipart / formdata 。

Your enctype is slightly incorrect, it should be multipart/form-data instead of multipart/formdata.

这篇关于multer - req.file总是未定义的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！