Go-模板引擎（一）

package main

import (
    "html/template"
    "net/http"
)

type PageData struct {
    Title string
    Body  string
}

func handlerFunc(w http.ResponseWriter, r *http.Request) {
    var data PageData

    switch r.URL.Path {
    case "/":
        data = PageData{
            Title: "Home",
            Body:  "<h1>Welcome to our website!</h1>",
        }
    case "/about":
        data = PageData{
            Title: "About",
            Body:  "<h1>About us</h1><p>We are a team of web developers.</p>",
        }
    default:
        data = PageData{
            Title: "Not Found",
            Body:  "<h1>404 Page Not Found</h1>",
        }
    }

    tmpl, err := template.ParseFiles("template.html")
    if err != nil {
        http.Error(w, err.Error(), http.StatusInternalServerError)
        return
    }

    err = tmpl.Execute(w, data)
    if err != nil {
        http.Error(w, err.Error(), http.StatusInternalServerError)
        return
    }
}

func main() {
    mux := http.NewServeMux()

    mux.HandleFunc("/", handlerFunc)
    mux.HandleFunc("/about", handlerFunc)

    http.ListenAndServe(":8080", mux)
}