SWI-Prolog の http クライアントの使い方 (Post)

http_post.pl

/* ------------------------------------------------------------------- */
/*
	http_post.pl

						Feb/28/2020
*/
/* ------------------------------------------------------------------- */
:- use_module(library(http/http_client)).

:- initialization main.
main() :-
	format('*** 開始 ***\n'),
	Url_in = 'https://httpbin.org/post',
	http_post(Url_in,form_data([ user = 'jiro',password = '123456']),
		Data, []),
	format(Data),
	format('*** 終了 ***\n'),
	halt.
/* ------------------------------------------------------------------- */

実行結果

$ swipl -f ./http_post.pl
*** 開始 ***
{
  "args": {}, 
  "data": "", 
  "files": {}, 
  "form": {
    "password": "123456", 
    "user": "jiro"
  }, 
  "headers": {
    "Content-Length": "243", 
    "Content-Type": "multipart/form-data; boundary=------1582874349.3074793518a5ea421823a9", 
    "Host": "httpbin.org", 
    "Mime-Version": "1.0", 
    "User-Agent": "SWI-Prolog", 
    "X-Amzn-Trace-Id": "Root=1-5e58beeb-4b81029675de664fb66721a9"
  }, 
  "json": null, 
  "origin": "153.233.38.78", 
  "url": "https://httpbin.org/post"
}
*** 終了 ***

確認したバージョン

$ swipl --version
SWI-Prolog version 9.0.4 for x86_64-linux