go-server-formvalue.go

package main                                                                                                                                                                                                                                            
import (
    "fmt"
    "net/http"
)

func rootHandler(w http.ResponseWriter, r *http.Request) {
    // http://golang.org/pkg/net/http/#Request.FormValue
    firstName, lastName := r.FormValue("name"), r.FormValue("last_name")

    if firstName == "" || lastName == "" { 
        http.Error(w, "name and last_name are mandatory fields", 400) 
    } else {
        fmt.Fprintf(w, "Hello, %v %v!", firstName, lastName)
    }    
}

func main() {
    http.HandleFunc("/", rootHandler)
    http.ListenAndServe(":8080", nil) 
}