验证码

验证码分成两部分：一个是展示验证码的页面；一个是验证验证码。

于是我们可以先定义两个接口：

  1. // Get - address: http://127.0.0.1:8080/
  2. func (ctrl *Controller) Get() {
  3.     ctrl.TplName = "captcha.html"
  4.     ctrl.Data["name"] = "Home"
  6.     // don't forget this
  7.     _ = ctrl.Render()
  8. }
  10. // Captcha - address: http://127.0.0.1:8080/sendCaptcha
  11. func (ctrl *Controller) Captcha() {
  12.     ctrl.TplName = "captcha.html"
  14.     if !cpt.VerifyReq(ctrl.Ctx.Request) {
  15.         logs.Error("Captcha does not match")
  16.         _ = ctrl.Render()
  17.         return
  18.     }
  20.     logs.Info("matched")
  21.     _ = ctrl.Render()
  22. }

前端页面可以很简单：

  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4.     <meta charset="UTF-8">
  5.     <title>Title</title>
  6. </head>
  8. <body>
  9.   Hello, world! This is {{.name}}, don't forget to remove the comments to test the form
  10. {{/*  <form action="/sendCaptcha" method="post">*/}}
  11. {{/*    {{create_captcha}}*/}}
  12. {{/*    <input name="captcha" type="text">*/}}
  13. {{/*  </form>*/}}
  14. </body>
  15. </html>