使用Node.js的Multer无法正常工作

Question

Okay, here is my form:

<form action="/measure" method="post">
  <input type="file" name="thisfile"/>
  <input type="submit" value="Give us that file!"/>
</form>

And my server:

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

app.post("/measure", upload.single("thisfile"), function (req, res) {
  console.log(req.file);
  //other stuff
});

When I submit the form to my server, req.file is undefined.

Answer 1

Wow, wrote you code from scratch assuming a few things but I found the error. In the Multer documentation, it says that Multer will not process a form that is not multipart. So you have to add that to your form (enctype="multipart/form-data"):

<form action="/measure" method="post" enctype="multipart/form-data">
  <input type="file" name="thisfile"/>
  <input type="submit" value="Give us that file!"/>
</form>

With that it should work. Let me know if this helped you. PS: Here is the documentation: https://www.npmjs.com/package/multer