How to convert req.body to string?

Question

I'm attempting to save req.body to a string in node however whenever I do console.log(req.body.toString) the output is [object Object]. Any idea on what i could be doing wrong?

var express = require('express');
var app = express();
var fs = require("fs");
var bodyParser = require("body-parser");
app.use(bodyParser.urlencoded({extended:false}));
app.use(bodyParser.json());

app.post('/addUser', function (req, res) {
    console.log(req.body.toString());
    res.end("thanks\n");
})

Output is:

[object Object]

When using JSON.stringify the output is:

" [object Object] "

Possible duplicate of [Converting an object to a string](http://stackoverflow.com/questions/5612787/converting-an-object-to-a-string) — JJJ, Aug 29 '16 at 17:11
Put a breakpoint on your console.log(...) line. Then have a look at req.body. — Chris Neve, Aug 29 '16 at 17:14
console.log(req.body) itself prints out a json. I just want to save that as a string. @ThomCunningham — mobutt, Aug 29 '16 at 17:15
I very much doubt that JSON.stringify gives that output, unless you're doing `JSON.stringify(req.body.toString())`. — JJJ, Aug 29 '16 at 17:19

vkstack · Accepted Answer · 2016-08-29T17:16:47.383

32

Use JSON.stringify() to convert any JSON or js Object(non-circular) to string. So in your case the following will work.

console.log(JSON.stringify(req.body))

edited Aug 29 '16 at 17:16

answered Aug 29 '16 at 17:15

vkstack

1,582
11
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This is also handy because if you've missed and forgot to specify a property you'll know right away what one to use. – tadman Aug 29 '16 at 17:15

score 2 · Answer 2 · answered Aug 29 '16 at 17:16

2

Try this

JSON.stringify(req.body);

Object.prototype.toString will allways return a string with object + type, unless you override it.

answered Aug 29 '16 at 17:16

delpo

210
2
18

score -1 · Answer 3 · edited Sep 18 '21 at 18:17

-1

It is a circular object so u need to stringify it as follow:

console.log(JSON.stringify(req.body));

edited Sep 18 '21 at 18:17

Mike

14,010
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answered Aug 29 '16 at 17:45

Muhamad Eissa

57
6

circular objects cant be stringified, i believe – vkstack Jul 10 '17 at 07:57

How to convert req.body to string?

3 Answers3

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