golang解析html网页的方法

html>
 head>
 title>Go web/title>
 /head>
 body>
 img src="/html/pics/girl.jpg" width="500" height="500">
 form action="http://127.0.0.1:8080/login" method="post">
 用户名:input type="text" name="username">
 密码:input type="password" name="password">
 input type="submit" value="登陆">
 /form>
 /body>
/html>

package main
 
import (
 "fmt"
 "html/template"
 "log"
 "net/http"
)
 
func login(w http.ResponseWriter, r *http.Request) {
 r.ParseForm()
 if r.Method == "GET" {
 t, err := template.ParseFiles("html/login.html")
 if err != nil {
 fmt.Fprintf(w, "parse template error: %s", err.Error())
 return
 }
 t.Execute(w, nil)
 } else {
 username := r.Form["username"]
 password := r.Form["password"]
 fmt.Fprintf(w, "username = %s, password = %s", username, password)
 }
}
 
func main() {
 http.HandleFunc("/html/pics/", func(w http.ResponseWriter, r *http.Request) {
 http.ServeFile(w, r, r.URL.Path[1:])
 })
 http.HandleFunc("/login", login)
 err := http.ListenAndServe(":8080", nil)
 if err != nil {
 log.Fatal("ListenAndServe: ", err)
 }
}