最近学习golang也有一段时间了，基础差不多学了个大概，因为本人是java程序员，所以对web更感兴趣。根据《go web编程》中的例子改编一个更简单的例子，供新手参考，废话不多说，上菜：
这个例子使用到了beego框架和beedb框架，如果是go新手beego和beedb得自己去google下载安装。
目录结构：
index.go
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
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.go
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("用户名或密码错误！")
}
return nil
}
main.go
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
<html>
<body>
error
</body>
</html>
success.tpl
<html>
<body>
successed
</body>
</html>
index.tpl
<html> <body> <h1>login</h1> <form action="/" method="post"> 用户名:<input type="text" name="username"><br> 密码:<input type="password" name="pwd"><br> <input type="submit" value="登录"><br> <a href="/regist">注册</a> </form> </body> </html>
regist.tpl
<html> <body> <h1>regist</h1> <form action="/regist" method="post"> 用户名:<input type="text" name="username"><br> 密码:<input type="password" name="pwd"><br> <input type="submit" value="注册"> </form> </body> </html>
数据库用的是mysql,建表语句
CREATE TABLE user ( id INT, username VARCHAR(32), pwd VARCHAR(32), PRIMARY KEY(id) );
程序跑起来是没有问题，但是session老是取不到数据，求大神解释！