验证码包:github.com/mojocn/base64Captcha
var driver = &base64Captcha.DriverString{
Length: 4,
Height: 60,
Width: 240,
ShowLineOptions: 6,
Source: "1234567890qwertyuioplkjhgfdsazxcvbnm",
}
var store = base64Captcha.DefaultMemStore
c := base64Captcha.NewCaptcha(driver, store)
_, b64s, code, errs := c.Generate()
if errs != nil {
return "", errors.New(errs.Error())
}
会生成图片(b64s)、真实验证码(code)