thinkcmf php 前后端分离验证码实现流程

需要考虑尽可能在原始代码上修改，但又不影响原先的代码逻辑。

已知，原始代码的验证码储存与 session，vue是无法带上session进行请求，也就无法验证验证码。

那么，我们需要把验证码数据储存与缓存。

vendor\topthink\think-captcha\src\Captcha.php

public function entry($id = '')
//改为
public function entry($id = '',$cache=false)

//把原先的Session::set($key . $id, $secode, '');加多一个储存方式
        if ($cache) {
            cache($key . $id, $secode,3600);
        }else{
            Session::set($key . $id, $secode, '');
        }

验证码修改文件

\vendor\thinkcmf\cmf\src\controller\CaptchaController.php

在$response = hook_one('captcha_image', $config);上边加上代码，用于判断是否要储存与缓存。

$cache = $request->param('cache', null);
        if (!empty($cache)) {
            $cache = true;
        }else{
            $cache = false;
        }

$response = $captcha->entry($id,$cache);//与$response = $captcha->entry($id);

//源代码
@ob_clean();// 清除输出缓存
return $response;

//改为
        @ob_clean();// 清除输出缓存
        if ($cache) {
            $id = time() . mt_rand(100, 999);
            $data['imgData'] = 'data:image/png;base64,'.base64_encode($response);
            $data['captchaId'] = $id;
            return json(['code' => 1,'msg'=> 'success','data' => $data]);

        }
        return $response;

获取/new_captcha.html?height=40&width=200&font_size=15&length=4&cache=1返回结果

{
    "code": 1,
    "msg": "success",
    "data": {
        "imgData": "data:image/png;base64,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",
        "captchaId": "1616053804248"
    }
}

 

验证

文件vendor\topthink\think-captcha\src\Captcha.php找到check改为

public function check($code, $id = '',$cache=false)
    {
        $key = $this->authcode($this->seKey) . $id;
        // 验证码不能为空
        if ($cache) {
            $secode = cache($key);
        }else{
            $secode = Session::get($key, '');
        }

        //halt($secode);
        if (empty($code) || empty($secode)) {
            return false;
        }
        // session 过期
        if (time() - $secode['verify_time'] > $this->expire) {
            if ($cache) {
                cache($key, NULL);
            }else{
                Session::delete($key, '');
            }
            return false;
        }

        if ($this->authcode(strtoupper($code)) == $secode['verify_code']) {
            if ($cache) {
                cache($key, NULL);
            }else{
                $this->reset && Session::delete($key, '');
            }
            return true;

        }

        return false;
    }

 

文件\vendor\thinkcmf\cmf\src\common.php找到cmf_captcha_check

改为

function cmf_captcha_check($value, $id = "", $reset = true,$ceche=false)
{
    $captcha        = new \think\captcha\Captcha();
    $captcha->reset = $reset;
    //halt($id);

    return $captcha->check($value, $id,$ceche);
}

文件vendor\thinkcmf\cmf-app\src\user\controller\LoginController.php找到doLogin

改为

$data = $this->request->post();

            $ValidateData = [
                'captcha' => 'require',
                'username' => 'require',
                'password' => 'require|min:6|max:32',
            ];
            $ValidateMsg = [
                'username.require' => '用户名不能为空',
                'password.require' => '密码不能为空',
                'password.max' => '密码不能超过32个字符',
                'password.min' => '密码不能小于6个字符',
                'captcha.require' => '验证码不能为空',
            ];
            $captchaId = '';
            $ceche = false;
            if (isset($data['captchaId'])) {
                $ceche = true;
                $captchaId = $data['captchaId'];
                $Validate['captchaId'] = 'require';
                $ValidateMsg['captchaId.require'] = '验证码ID不能为空';
            }

            $validate = new \think\Validate($ValidateData);

            $validate->message($ValidateMsg);


            if (!$validate->check($data)) {
                $this->error($validate->getError());
            }

            if (!cmf_captcha_check($data['captcha'],$captchaId,true,$ceche)) {
                $this->error(lang('CAPTCHA_NOT_RIGHT'));
            }