Golang http request demo

client.go

package main

import (
	"bytes"
	"encoding/json"
	"io/ioutil"
	"log"
	"net/http"
	"net/url"
	"strings"
)

const testURL = "http://127.0.0.1:8080"

func getMethod() {
	resp, err := http.Get(testURL + "/getMethod")
	if err != nil {
		log.Panic(err)
	}
	defer resp.Body.Close()

	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		log.Panic(err)
	}
	log.Println("getMethod: " + string(body))
}

func postMethod() {
	resp, err := http.Post(testURL+"/postMethod",
		"application/x-www-form-urlencoded",
		strings.NewReader("Method=post"))
	if err != nil {
		log.Panic(err)
	}
	defer resp.Body.Close()

	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		log.Panic(err)
	}
	log.Println("postMethod: " + string(body))
}

func postFormMethod() {
	resp, err := http.PostForm(testURL+"/postFormMethod",
		url.Values{"name": {"JOE"}})
	if err != nil {
		log.Panic(err)
	}
	defer resp.Body.Close()
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		log.Panic(err)
	}
	log.Println("postFormMethod: " + string(body))
}

type formData struct {
	Name string `json:"name"`
	Age  int    `json:"age"`
}

func postJSON() {
	fd := formData{"JOE", 28}
	b, err := json.Marshal(fd)
	if err != nil {
		log.Panic(err)
	}

	resp, err := http.Post(testURL+"/postJSON",
		"application/json",
		bytes.NewReader(b))
	if err != nil {
		log.Panic(err)
	}
	defer resp.Body.Close()
	res, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		log.Panic(err)
	}
	log.Print("postJSON: " + string(res))
}

func main() {
	getMethod()
	postMethod()
	postFormMethod()
	postJSON()
}

server.go

package main

import (
	"io/ioutil"
	"log"
	"net/http"
)

func handle(w http.ResponseWriter, r *http.Request) {
	b, err := ioutil.ReadAll(r.Body)
	if err != nil {
		log.Panic(err)
	}
	defer r.Body.Close()

	w.Write(b)
}

func main() {
	http.HandleFunc("/getMethod", handle)
	http.HandleFunc("/postMethod", handle)
	http.HandleFunc("/postFormMethod", handle)
	http.HandleFunc("/postJSON", handle)

	log.Println("Listen on 8080")
	if err := http.ListenAndServe(":8080", nil); err != nil {
		log.Fatal(err)
	}
}