package main

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

func simpleGet() {
   // header나 추가적인 요청을 보낼 수 없음
   resp, err := http.Get("https://naver.com")
   if err != nil {
      panic(err)
   }

   defer resp.Body.Close()

   // 결과 출력
   data, err := ioutil.ReadAll(resp.Body)
   if err != nil {
      panic(err)
   }
   fmt.Printf("%s\n", string(data))
}

func customGet() {
   // Request 객체 생성
   req, err := http.NewRequest("GET", "https://naver.com", nil)
   if err != nil {
      panic(err)
   }

   //헤더 추가
   req.Header.Add("User-Agent", "Golang-test")

   // Client 객체에서 Request 실행
   client := &http.Client{}
   resp, err := client.Do(req)
   if err != nil {
      panic(err)
   }
   defer resp.Body.Close()

   // 결과 출력
   bytes, _ := ioutil.ReadAll(resp.Body)
   str := string(bytes) //바이트를 문자열로
   fmt.Println(str)
}


func main() {
   simpleGet()
   customGet()

}

package main

import (
   "bytes"
   "encoding/json"
   "encoding/xml"
   "io/ioutil"
   "net/http"
)

//Person -
type Person struct {
   Name string
   Age  int
}


func simpleTextPost() {
   reqBody := bytes.NewBufferString("Post plain text")
   resp, err := http.Post("http://httpbin.org/post", "text/plain", reqBody)
   if err != nil {
      panic(err)
   }

   defer resp.Body.Close()

   // Response 체크.
   respBody, err := ioutil.ReadAll(resp.Body)
   if err == nil {
      str := string(respBody)
      println(str)
   }
}

func simpleJSONPost() {
   person := Person{"Alex", 10}
   pbytes, _ := json.Marshal(person)
   buff := bytes.NewBuffer(pbytes)
   resp, err := http.Post("http://httpbin.org/post", "application/json", buff)

   defer resp.Body.Close()

   // Response 체크.
   respBody, err := ioutil.ReadAll(resp.Body)
   if err == nil {
      str := string(respBody)
      println(str)
   }

}

func simpleXMLPost() {
   person := Person{"Alex", 10}
   pbytes, _ := xml.Marshal(person)  // xml marshal
   buff := bytes.NewBuffer(pbytes)
   resp, err := http.Post("http://httpbin.org/post", "application/xml", buff)

   defer resp.Body.Close()

   // Response 체크.
   respBody, err := ioutil.ReadAll(resp.Body)
   if err == nil {
      str := string(respBody)
      println(str)
   }

}

func customPost() {
   person := Person{"Alex", 10}
   pbytes, _ := xml.Marshal(person)
   buff := bytes.NewBuffer(pbytes)

   // Request 객체 생성
   req, err := http.NewRequest("POST", "http://httpbin.org/post", buff)
   if err != nil {
      panic(err)
   }

   //Content-Type 헤더 추가
   req.Header.Add("Content-Type", "application/xml")

   // Client객체에서 Request 실행
   client := &http.Client{}
   resp, err := client.Do(req)
   if err != nil {
      panic(err)
   }
   defer resp.Body.Close()

   // Response 체크.
   respBody, err := ioutil.ReadAll(resp.Body)
   if err == nil {
      str := string(respBody)
      println(str)
   }
}

func main() {
   simpleTextPost()
   simpleJSONPost()
   simpleXMLPost()
   customPost()
}