Golang-Form表单提交

go提供html/template用于解析html模板文件，将模板文件提交的输入转换成结构体并用于渲染。

package main

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

type ContactDetails struct {
	Email   string
	Subject string
	Message string
}

func main() {
	tmpl := template.Must(template.ParseFiles("H:\\go\\main\\forms.html"))

	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		if r.Method != http.MethodPost {
			tmpl.Execute(w, nil)
			return
		}

		details := ContactDetails{
			Email:   r.FormValue("email"),
			Subject: r.FormValue("subject"),
			Message: r.FormValue("message"),
		}

		// do something with details
		_ = details

		tmpl.Execute(w, struct {Success bool}{true})
	})

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

html模板文件内容：

{{if .Success}}
<h1>Thanks for your message!h1>
{{else}}
<h1>Contacth1>
<form method="POST">
    <label>Email:label><br />
    <input type="text" name="email"><br />
    <label>Subject:label><br />
    <input type="text" name="subject"><br />
    <label>Message:label><br />
    <textarea name="message">textarea><br />
    <input type="submit">
form>
{{end}}

启动项目，访问http://8080端口

随意输入，点击提交输出显示成功的信息。