参数传递

[zhongxiaohang]

您给的实例运行后没有问题，但是我想使用curl命令行的方式向生成或者认证函数传递参数，请问我应该怎么传递

[mojocn]

我这里有一个算术公式example代码,看看是否是你需要的

import (
	"github.com/mojocn/base64Captcha"
	"image/color"
	"time"
)

type Captcha struct {
	Driver base64Captcha.DriverMath
	Store  base64Captcha.Store
}

func NewCaptcha() *Captcha {
	d := base64Captcha.DriverMath{
		Height:          36,
		Width:           240,
		NoiseCount:      0,
		ShowLineOptions: 0, //base64Captcha.OptionShowSlimeLine,//base64Captcha.OptionShowHollowLine | base64Captcha.OptionShowSineLine | base64Captcha.OptionShowSlimeLine,
		BgColor: &color.RGBA{
			R: 0,
			G: 0,
			B: 0,
			A: 0,
		}, //transparent background color
		Fonts: []string{"wqy-microhei.ttc"}, //randomly use all fonts
	}
	d.ConvertFonts() //use all fonts
	return &Captcha{
		Driver: d,
		Store:  base64Captcha.NewMemoryStore(1<<20, time.Second*300),
	}
}

//Generate generates a random id, base64 image string or an error if any
func (c *Captcha) Generate() (id, b64s string, err error) {
	id, content, answer := c.Driver.GenerateIdQuestionAnswer()
	item, err := c.Driver.DrawCaptcha(content)
	if err != nil {
		return "", "", err
	}
	c.Store.Set(id, answer)
	b64s = item.EncodeB64string()
	return
}

//Verify by a given id key and remove the captcha value in store,
//return boolean value.
//if you has multiple captcha instances which share a same store.
//You may want to call `store.Verify` method instead.
func (c *Captcha) Verify(id, answer string, clear bool) (match bool) {
	match = c.Store.Get(id, clear) == answer
	return
}