如何在不打开浏览器的情况下在 node.js 中使用 $.ajax

Question

First of all, I'm kinda new in node.js. I want use this code (it works in browser) $.ajax('/postmessage'{method: "POST",data:{message: 'foo', username: 'bar'}) without opening the browser and let it run while I am doing any other thing. Is it possible ? Or there is a better way ?

thanks.

edit: I tried use axios :
const axios = require('axios'); const instance = axios.create({ baseURL: 'sitehere' });
instance.post('/postmessage', { message: 'foo', username: 'bar'}) .then( function (response) { console.log(response); }) .catch( function (error) { console.log(error); })

and I get the error 403 and my message is not sent.

Answer 1

See the documentation :

By default, axios serializes JavaScript objects to JSON. To send data in the application/x-www-form-urlencoded format instead, you can use one of the following options.

…

In node.js, you can use the querystring module as follows:

 var querystring = require('querystring'); axios.post('http://something.com/', querystring.stringify({ foo: 'bar' }));

You can also use the qs library.

Answer 2

You were almost there. There is one caveat. The following:

$.ajax('/postmessage'{method: "POST",data:{message: 'foo', username: 'bar'})

Sends this HTTP request:

POST /postMessage HTTP/1.1
Content-Type: application/x-www-form-urlencoded

message=foo&username=bar

Your use of axios would send the following:

POST /postMessage HTTP/1.1
Content-Type: application/json

{"message":"foo", "username":"bar"}

This is indicated in the axios documentation and is a deliberate choice as one of the main use cases for axios is the consumption REST APIs.

node.js has a built-in querystring module, allowing you to feed a string as body content of the POST request to axios, as follows:

const axios = require('axios'); 
const querystring = require("querystring");
const instance = axios.create({ baseURL: 'sitehere' });

instance.post('/postmessage', querystring.stringify({ message: 'foo', username: 'bar'}))
.then(
      function (response) { console.log(response); })
.catch(
      function (error) { console.log(error); })