golangHow to get request body from HTTP server

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

func hi(w http.ResponseWriter, req *http.Request) {
  defer req.Body.Close()
  b, _ := io.ReadAll(req.Body)
  fmt.Fprintf(w, string(b))
}

func main() {
  http.HandleFunc("/hi", hi)
  http.ListenAndServe(":8222", nil)
}ctrl + cgithub

`package main` default package declaration	`func main() {` declare `main` function that will be launched automatically
`net/http` http package to work with http protocol	`io.ReadAll(req.Body)` reads entire body into `b` variable (and then printed back to client)
`"/hi", hi` handle `/hi` request with `hi()` function	`http.ListenAndServe` launch HTTP server
`8222` port to listen HTTP server on

Usage example

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

func hi(w http.ResponseWriter, req *http.Request) {
  defer req.Body.Close()
  b, _ := io.ReadAll(req.Body)
  fmt.Fprintf(w, string(b))
}

func main() {
  http.HandleFunc("/hi", hi)
  http.ListenAndServe(":8222", nil)
}

output

# returns "123" on "localhost:8222/hi?test=123" request

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golangHow to get request body from HTTP server

Usage example

output

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