beego2.x中如何引入验证码模块

发布于 2 年前 作者 phonegap100 1182 次浏览 来自 分享

beego2.x中如何引入验证码模块呢

Beego框架真的很贴心，默认有captcha这个验证码插件。

https://pkg.go.dev/github.com/beego/beego/v2/server/web/captcha

1、引入captcha对应的两个模块

"github.com/beego/beego/v2/client/cache"
"github.com/beego/beego/v2/server/web/captcha"

2、生成验证码

var cpt *captcha.Captcha
func init() {
	store := cache.NewMemoryCache()
	cpt = captcha.NewWithFilter("/captcha/", store)
	cpt.ChallengeNums = 4
	cpt.StdWidth = 100
	cpt.StdHeight = 40
}

3、在模板中使用 {{create_captcha}}显示验证码

<form action="/admin/login/doLogin" method="post" id="myform">
       <div class="l_title">小米商城后台管理系统-IT营</div>
       <dl>
           <dd>用户名：<input class="text" type="text" name="username" id="username"></dd>
           <dd>密码：<input class="text" type="password" name="password" id="password"></dd>
           <dd>验证码：<input id="captcha" type="text" name="captcha">
                            {{create_captcha}}
                         </dd>			
           <dd><input type="submit" class="submit" name="dosubmit" value=""></dd>	
       </dl>
</form>

4、验证验证码 1、第一种验证方式: {{create_captcha}}这样的方式生成验证码后，它会自动的在我们html上面生成一个隐藏的表单域，所以我们可以通过captchaId来获取表单传过来的 captcha_id

func (c *LoginController) DoLogin() {
	captchaId := c.GetString("captchaId")
	captchaValue := strings.Trim(c.GetString("captcha"), "")
	if !cpt.VerifyReq(captchaId, captchaValue) {
		c.Ctx.WriteString("验证码失败")
	} else {
		c.Ctx.WriteString("验证码成功")
	}
}

第二种验证方式:

func (c *LoginController) DoLogin() {
	if !cpt.VerifyReq(c.Ctx.Request) {
		c.Ctx.WriteString("验证码失败")
	} else {
		c.Ctx.WriteString("验证码成功")
	}
}

5、完整代码 Login控制器

package admin
import (
	"strings"
	"github.com/astaxie/beego"
	"github.com/beego/beego/v2/client/cache"
	"github.com/beego/beego/v2/server/web/captcha"
)
var cpt *captcha.Captcha
func init() {
	store := cache.NewMemoryCache()
	cpt = captcha.NewWithFilter("/captcha/", store)
	cpt.ChallengeNums = 4
	cpt.StdWidth = 100
	cpt.StdHeight = 40
}

type LoginController struct {
	beego.Controller
}
func (c *LoginController) Get() {
	c.TplName = "admin/login/index.html"
}

func (c *LoginController) DoLogin() {
	captchaId := c.GetString("captchaId")
	captchaValue := strings.Trim(c.GetString("captcha"), "")
	if !cpt.VerifyReq(captchaId, captchaValue) {
		c.Ctx.WriteString("验证码失败")

	} else {
		c.Ctx.WriteString("验证码成功")
	}
}

模板文件

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    
    <title>用户登录</title>
    <link rel="stylesheet" href="/static/css/login.css"> 
</head>
<body>
    <div class="container">
        <div id="login">
                <form action="/admin/login/doLogin" method="post" id="myform">
                   
                    <div class="l_title">小米商城后台管理系统-IT营</div>
                    <dl>
                        <dd>管理员姓名：<input class="text" type="text" name="username" id="username"></dd>
                        <dd>管理员密码：<input class="text" type="password" name="password" id="password"></dd>
                        <dd>验　证　码：<input id="captcha" type="text" name="captcha">

                            {{create_captcha}}
                         </dd>			
                        <dd><input type="submit" class="submit" name="dosubmit" value=""></dd>			
                    </dl>
                </form>
            </div>
</div>
</body>
</html>
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