GET and POST golang API

main.go

/*
* Sample API with GET and POST endpoint.
* POST data is converted to string and saved in internal memory.
* GET endpoint returns all strings in an array.
 */
package main

import (
	"encoding/json"
	"flag"
	"fmt"
	"io/ioutil"
	"log"
	"net/http"
	"time"
)

var (
	// flagPort is the open port the application listens on
	flagPort = flag.String("port", "9000", "Port to listen on")
)

var results []string

// GetHandler handles the index route
func GetHandler(w http.ResponseWriter, r *http.Request) {
	jsonBody, err := json.Marshal(results)
	if err != nil {
		http.Error(w, "Error converting results to json",
			http.StatusInternalServerError)
	}
	w.Write(jsonBody)
}

// PostHandler converts post request body to string
func PostHandler(w http.ResponseWriter, r *http.Request) {
	if r.Method == "POST" {
		body, err := ioutil.ReadAll(r.Body)
		if err != nil {
			http.Error(w, "Error reading request body",
				http.StatusInternalServerError)
		}
		results = append(results, string(body))

		fmt.Fprint(w, "POST done")
	} else {
		http.Error(w, "Invalid request method", http.StatusMethodNotAllowed)
	}
}

func init() {
	log.SetFlags(log.Lmicroseconds | log.Lshortfile)
	flag.Parse()
}

func main() {
	results = append(results, time.Now().Format(time.RFC3339))

	mux := http.NewServeMux()
	mux.HandleFunc("/", GetHandler)
	mux.HandleFunc("/post", PostHandler)

	log.Printf("listening on port %s", *flagPort)
	log.Fatal(http.ListenAndServe(":"+*flagPort, mux))
}

111

111

Useless bro. Post is a method it is not a part of URL. Client won't tell you whether he is using post or get method.

"The POST method is used to request that the origin server accept the entity enclosed in the request as a new subordinate of the resource identified by the Request-URI in the Request-Line."
RFC 2616, § 9.5

POST is an HTTP method and should not be included as part of the URL endpoint.