go語言實現一個簡單的登陸註冊web小程序

時間 2019-11-05

標籤語言實現一個簡單登陸註冊 web 程序欄目 HTML 简体版

原文原文鏈接

最近學習golang也有一段時間了，基礎差很少學了個大概，由於本人是java程序員，因此對web更感興趣。根據《go web編程》中的例子改編一個更簡單的例子，供新手參考，廢話很少說，上菜：html

這個例子使用到了beego框架和beedb框架，若是是go新手beego和beedb得本身去google下載安裝。java

目錄結構：mysql

index.gogit

package controllers

import (
	"fmt"
	"github.com/astaxie/beego"
	"login/models"
)

type IndexController struct {
	beego.Controller
}

func (index *IndexController) Get() {
	sess := index.StartSession()
	username := sess.Get("username")
	fmt.Println(username)
	if username == nil || username == "" {
		index.TplNames = "index.tpl"
	} else {
		index.TplNames = "success.tpl"
	}

}

func (index *IndexController) Post() {
	sess := index.StartSession()
	var user models.User
	inputs := index.Input()
	//fmt.Println(inputs)
	user.Username = inputs.Get("username")
	user.Pwd = inputs.Get("pwd")
	err := models.ValidateUser(user)
	if err == nil {
		sess.Set("username", user.Username)
		fmt.Println("username:", sess.Get("username"))
		index.TplNames = "success.tpl"
	} else {
		fmt.Println(err)
		index.TplNames = "error.tpl"
	}
}

regist.go程序員

package controllers

import (
	"fmt"
	"github.com/astaxie/beego"
	"login/models"
)

type RegistController struct {
	beego.Controller
}

func (this *RegistController) Get() {
	this.TplNames = "regist.tpl"
}

func (this *RegistController) Post() {
	var user models.User
	inputs := this.Input()
	//fmt.Println(inputs)
	user.Username = inputs.Get("username")
	user.Pwd = inputs.Get("pwd")
	err := models.SaveUser(user)
	if err == nil {
		this.TplNames = "success.tpl"
	} else {
		fmt.Println(err)
		this.TplNames = "error.tpl"
	}
}

models.gogithub

package models

import (
	"database/sql"
	"errors"
	"fmt"
	"github.com/astaxie/beedb"
	_ "github.com/ziutek/mymysql/godrv"
)

type User struct {
	Id       int `PK`
	Username string
	Pwd      string
}

func getLink() beedb.Model {
	db, err := sql.Open("mysql", "root:root@tcp(192.168.1.81:3306)/test_my?charset=utf8")
	if err != nil {
		panic(err)
	}
	orm := beedb.New(db)
	return orm
}

func SaveUser(user User) error {
	orm := getLink()
	fmt.Println(user)
	err := orm.Save(&user)
	return err
}

func ValidateUser(user User) error {
	orm := getLink()
	var u User
	orm.Where("username=? and pwd=?", user.Username, user.Pwd).Find(&u)
	if u.Username == "" {
		return errors.New("用戶名或密碼錯誤！")
	}
	return nil
}

main.gogolang

package main

import (
	//"fmt"
	"github.com/astaxie/beego"
	"login/controllers"
)

type MainController struct {
	beego.Controller
}

func main() {
	beego.SessionOn = true
	beego.RegisterController("/", &controllers.IndexController{})
	beego.RegisterController("/regist", &controllers.RegistController{})
	beego.Run()
}

error.tpl web

<html>
	<body>
            error
	</body>
</html>

success.tplsql

<html>
	<body>
            successed
	</body>
</html>

index.tpl數據庫

<html>
	<body>
		<h1>login</h1>
		<form action="/" method="post">
			用戶名:<input type="text" name="username"><br>
			密碼:<input type="password" name="pwd"><br>
			<input type="submit" value="登陸"><br>
			<a href="/regist">註冊</a>
		</form>
	</body>
</html>

regist.tpl

<html>
	<body>
		<h1>regist</h1>
		<form action="/regist" method="post">
			用戶名:<input type="text" name="username"><br>
			密碼:<input type="password" name="pwd"><br>
			<input type="submit" value="註冊">
		</form>
	</body>
</html>

數據庫用的是mysql,建表語句

CREATE TABLE user (
id      INT,
username   VARCHAR(32),
pwd VARCHAR(32),
PRIMARY KEY(id) 
);

程序跑起來是沒有問題，可是session總是取不到數據，求大神解釋！

相關標籤/搜索

每日一句

每一个你不满意的现在，都有一个你没有努力的曾经。