http_post.go

package main

import (
	"bytes"
	"encoding/json"
	"fmt"
	"io"
	"log"
	"net/http"
)

func main() {

	reqBody, err := json.Marshal(map[string]string{
		"username": "admin",
		"password": "admin",
	})
	if err != nil {
		log.Fatal(err)
	}

	resp, err := http.Post("https://httpbin.org/post", "application/json", bytes.NewBuffer(reqBody))
	if err != nil {
		log.Fatal(err)
	}

	defer resp.Body.Close()

	fmt.Println("Response status:", resp.Status)

	body, err := io.ReadAll(resp.Body)
	if err != nil {
		log.Fatal(err)
	}
	log.Println(string(body))
}