go-tour-58.go

package main

import (
    "fmt"
    "net/http"
)

type String string

type Struct struct {
    Greeting string
    Punct    string
    Who      string
}

func (s String) ServeHTTP(
    w http.ResponseWriter,
    r *http.Request) {
    fmt.Fprint(w, s)
}

func (s Struct) ServeHTTP(
    w http.ResponseWriter,
    r *http.Request) {
    fmt.Fprint(w, s.Greeting+s.Punct+s.Who)
}

func main() {
    // your http.Handle calls here
    http.Handle("/string", String("I'm a frayed knot."))
    http.Handle("/struct", &Struct{"Hello", ":", "Gophers!"})
    http.ListenAndServe("localhost:4000", nil)
}

-> % http localhost:4000/string
HTTP/1.1 200 OK
Content-Length: 18
Content-Type: text/plain; charset=utf-8
Date: Sat, 08 Mar 2014 07:33:51 GMT

I'm a frayed knot.

-> % http localhost:4000/struct
HTTP/1.1 200 OK
Content-Length: 14
Content-Type: text/plain; charset=utf-8
Date: Sat, 08 Mar 2014 07:33:54 GMT

Hello:Gophers!