login.go

package main

import (
	"fmt"

	"html/template"

	"log"

	"net/http"

	"strings"
)

func sayhelloName(w http.ResponseWriter, r *http.Request) {

	r.ParseForm() //Parse url parameters passed, then parse the response packet

	fmt.Println(r.Form) // print information on server side.

	fmt.Println("path", r.URL.Path)

	fmt.Println("scheme", r.URL.Scheme)

	fmt.Println(r.Form["url_long"])

	for k, v := range r.Form {
		fmt.Println("key:", k)

		fmt.Println("val:", strings.Join(v, ""))

	}

	fmt.Fprintf(w, "Hello astaxie!") // write data to response
}

func login(w http.ResponseWriter, r *http.Request) {

	fmt.Println("method:", r.Method) //get request method

	if r.Method == "GET" {

		t, err := template.ParseFiles("login.gtpl")
		if err != nil {
			log.Fatal(err)
		}

		t.Execute(w, nil)

	} else {

		r.ParseForm()

		// logic part of log in

		fmt.Println("username:", r.Form["username"])

		fmt.Println("password:", r.Form["password"])
		fmt.Println("username:", template.HTMLEscapeString(r.Form.Get("username"))) // print at server side
		fmt.Println("password:", template.HTMLEscapeString(r.Form.Get("password")))

	}
}

// func init() {
// 	http.HandleFunc("/", sayhelloName) // setting router rule

// 	http.HandleFunc("/login", login)
// }

func main() {

	http.HandleFunc("/", sayhelloName) // setting router rule

	http.HandleFunc("/login", login)

	err := http.ListenAndServe(":8080", nil) // setting listening port

	if err != nil {

		log.Fatal("ListenAndServe: ", err)

	}
}