How to send JSON in a POST request with NodeJS

Question

I'm trying to send a POST request to an endpoint which accepts JSON and it doesn't work. Do I have to send any specific parameter in order to let the network know it is encoded as JSON?

Here is the simple request I've so far:

var request = require('request')

var cookie = '**Here the cookie copied from the Network tab from the Chrome Dev Tools Bar**'
var UA = '**Here the UA copied from the Network tab from the Chrome Dev Tools Bar**'

var JSONformData = {"jsonrpc":"2.0","method":"LMT_split_into_sentences","params":{"texts":["Text"],"lang":{"lang_user_selected":"auto","user_preferred_langs":["EN","ES"]}},"id":8}

var URL = 'https://www.deepl.com/jsonrpc'

request.cookie(cookie)
request.post({
        url: URL, 
        headers: {
            'User-Agent': UA
        },
        form: JSONformData
    }, function(error, response, body) {
        console.log(response)
    }
)

Metabolic · Accepted Answer · 2017-08-30 08:49:37Z

6

If you are sending JSON data then you don't need to specify the form, instead specify the json for data in the options object:

request.post({
        url: URL, 
        headers: {
            'User-Agent': UA
        },
         json: JSONformData
    }, function(error, response, body) {
        console.log(response)
    })

answered Aug 30, 2017 at 8:49

Metabolic

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4 Comments

Metabolic Over a year ago

You must be doing something wrong in your code. Check the docs here: github.com/request/request#requestoptions-callback Specifying Json data with json key will set the content type to json and body to the json data.

Óscar Andreu Over a year ago

As you can see here: github.com/request/request#forms body: JSON.stringify(...) That's the point

Metabolic Over a year ago

What's the point in that? He wanted to send Json data with request module and that's how the docs specify it's done

alexmac Over a year ago

@ÓscarAndreu When you use body: JSON.stringify you need to set content-type to application/json. But when you set data to json field, request sets it automatically.

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