bee go用base64Captcha生成base64的验证码

废话不多说 直接 上代码：
login.go

package controllers

import (
    "fmt"
    "strings"

    "github.com/astaxie/beego"
    "github.com/mojocn/base64Captcha"
)

var store = base64Captcha.DefaultMemStore

/*
var store base64Captcha.Store

func init() {
    store = base64Captcha.DefaultMemStore
    // base64Captcha.DefaultMemStore是默认的:10240 个 过期时间10分钟
    // 也可以自己设定参数base64Captcha.NewMemoryStore(GCLimitNumber, Expiration
}
*/
type LoginController struct {
    beego.Controller
}

func If(condition bool, trueVal, falseVal interface{}) interface{} {
    if condition {
        return trueVal
    } else {
        return falseVal
    }
}

///获取验证码
func (c *LoginController) Captcha() {
    type CaptchaResult struct {
        Id         string `json:"captchaId"`
        Base64Blob string `json:"img"`
    }
    /*
        driverString := base64Captcha.DriverString{
            Height:          30,
            Width:           60,
            NoiseCount:      0,
            ShowLineOptions: 2 | 2,
            Length:          4,
            Source:          "1234567890qwertyuioplkjhgfdsazxcvbnm",
            BgColor: &color.RGBA{
                R: 3,
                G: 102,
                B: 214,
                A: 125,
            },
            Fonts: []string{"wqy-microhei.ttc"},
        }

        driver := driverString.ConvertFonts()
    */
    driver := base64Captcha.DefaultDriverDigit
    captcha := base64Captcha.NewCaptcha(driver, store)
    id, b64s, err := captcha.Generate()
    if err != nil {
        fmt.Println(err)
    }

    detail := make(map[string]string, 2)
    detail["captchaId"] = id
    detail["img"] = b64s

    res := make(map[string]interface{}, 3)
    res["status"] = 0
    res["msg"] = ""
    res["data"] = detail

    c.Data["json"] = res
    c.ServeJSON()
}

///登陆
func (c *LoginController) Verify() {

    type CaptchaData struct {
        captchaid  string
        verifycode string
    }
    var obj CaptchaData
    var msg = "验证码不正确"
    verify := false
    //json data
    //json.Unmarshal(c.Ctx.Input.RequestBody, &obj)
    obj.captchaid = strings.TrimSpace(c.GetString("captchaid"))
    obj.verifycode = strings.TrimSpace(c.GetString("verifycode"))
    if obj.verifycode == "" || obj.captchaid == "" {
        msg = "验证码不能为空"
    } else {
        verify = store.Verify(obj.captchaid, obj.verifycode, true)
        if verify {
            msg = ""
        }
    }

    fmt.Println(verify)
    res := make(map[string]interface{}, 3)
    res["status"] = If(msg == "", 0, -1)
    res["msg"] = msg

    c.Data["json"] = res
    c.ServeJSON()

}

修改路由文件 router.go 测试所有verify 就用GET方便

    beego.Router("v1/api/captcha", &controllers.LoginController{}, "GET:Captcha")
    beego.Router("v1/api/verify", &controllers.LoginController{}, "GET:Verify")

运行效果：

 把img 通过http://tool.chinaz.com/tools/imgtobase/ 可以查看正正的验证码