Golang : Convert HTTP Response body to string



Tags : golang string convert http-response

Problem :

While writing tutorial on how to interface with PayPal's IPN(Instant Payment Notification), I need to convert the HTTP Response body to string for verifying the IPN. So how to convert the response body to string ?

Solution :

Use ioutil.ReadAll(resp.Body) function to read all the body and convert to string with string() function.

 package main

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

 func main() {

  resp, err := http.Get("https://golang.org")

  if err != nil {
 fmt.Println(err)
 os.Exit(1)
  }

  defer resp.Body.Close()

  htmlData, err := ioutil.ReadAll(resp.Body) //<--- here!

  if err != nil {
 fmt.Println(err)
 os.Exit(1)
  }

  // print out
  fmt.Println(os.Stdout, string(htmlData)) //<-- here !

  // use Regular Expression to search for keyword
  // for example
  verified, err := regexp.MatchString("VERIFIED", string(htmlData))

  //if err != nil {
  //  fmt.Println(err)
  //  return
  // }

 }

  See also : Golang : Interfacing with PayPal's IPN(Instant Payment Notification) example



Tags : golang string convert http-response

By Adam Ng

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