问题

Can someone please tell me the recommended (up to date) way to get POSTed form data in express.

So many tutorials/ posts etc talk about bodyParser but this is no longer bundled with Express and other blogs etc recommend using urlencoded directly, but now this is not available either.

Trying to find accurate information on these frameworks or technologies is doing my head in.

BTW what I am intrerested in is very simple and small form data

回答1:

You should install body-parser through npm-install. Now it comes as a separate middleware.

After that add following line in your app.js

var bodyParser = require('body-parser');
app.use(bodyParser.json());
app.use(bodyParser.urlencoded());
// in latest body-parser use like below.
app.use(bodyParser.urlencoded({ extended: true }));

It parses the post request as an object. You will get your variables in req.body.

In your post request handler.

app.post('/post',function(request,response){
   console.log(request.body) //you will get your data in this as object.
})

Edit 1

The answer above was for the question specifically asked, the OP was looking for the bodyParser(deprecated) which was not part of express anymore.

Since the title of the question is very generic and the answer doesn't include all aspects of form-data, I will put @StLia's answer as an edit.

Body-Parser Readme

This does not handle multipart bodies, due to their complex and typically large nature. For multipart bodies, you may be interested in the following modules:

busboy and connect-busboy
multiparty and connect-multiparty
formidable
multer

回答2:

You can make use of express-formidable module to that. install 'express-formidable' by the following command npm install express-formidable

the simple example is as follows

const express = require('express');
const formidable = require('express-formidable');

var app = express();

app.use(formidable());

app.post('/upload', (req, res) => {
  //req.fields contains non-file fields 
  //req.files contains files 
  res.send(JSON.stringify(req.fields));
});

Click here for further description

回答3:

From the README of body-parser:

This does not handle multipart bodies, due to their complex and typically large nature.

The above is going to work with x-www-form-urlencoded and json but it will NOT work with any multipart. form-data is also multipart with the header multipart/form-data.

In case of form-data, your best solution would be to use express-formidable.

来源：https://stackoverflow.com/questions/24800511/express-js-form-data

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