$ vi web.go
// +build ignore
package main
import (
"fmt"
"log"
"net/http"
)
func handler(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "Hi there, I love %s!", r.URL.Path[1:])
}
func main() {
http.HandleFunc("/", handler)
log.Fatal(http.ListenAndServe(":8080", nil))
}
$ go run web.go
safariでhttp://localhost:8080/monkeys を開く
Writing Web Applications - The Go Programming Language