/**
     * 重置密码页,验证链接有效性,页面发送邮件调用sendResetPwdEmail()方法
     * @author [email protected]
     * https://www.cnblogs.com/wxzxc
     */
    public function resetPwd()
    {
        $param = input('');
        $bool  = $this->verifyUrl($param);
        if ($bool) {
            $this->assign("param", $param);
            return $this->fetch('resetpwd');
        } else {
            abort(404, '链接失效或错误');
        }
    }

    /**
     * 执行重置密码
     * @author [email protected]
     * https://www.cnblogs.com/wxzxc
     */
    public function doResetPwd()
    {
        $param = input('param.');
　　　　　// 验证链接有效性
        $bool  = $this->verifyUrl($param);
        if ($bool) {
            $validateRes = is_pwd($param['password']);
            if (!$validateRes) {
                return info(lang("密码必须包含大小写字母,数字,长度为8~16"), 0);
            }
            if ($param['password'] != $param['rpassword']) {
                return info('两次密码输入不一致', 1);
            } else {
                $c = explode('+', base64_decode($param['c']));
                try {
                    model('User')->where(['email' => $c[0]])->update(['password' => mduser($param['password'])]);
                    return info('密码重置成功');
                } catch (Exception $e) {
                    return info('密码重置失败，请联系管理员');
                }
            }
        } else {
            abort(404, '链接失效或错误');
        }
    }

    /**
     * 重置密码发送邮箱
     * @author [email protected] 
     * https://www.cnblogs.com/wxzxc
     */
    public function sendResetPwdEmail()
    {
        $param = input('post.email');
        if (empty($param)) {
            return false;
        }
        $data = model('user')->getRow(['email' => $param], 'id,it_code,password');
        if (empty($data)) {
            return info('邮箱未注册', 0);
        }

        $time = time();
        $key1 = base64_encode($param . '+' . $time);
        $key2 = md5($data['id'] . $data['it_code'] . $data['password'] . $time . config('user_auth_key'));
        $url  = $_SERVER['REQUEST_SCHEME'] . '://' . $_SERVER['SERVER_NAME'] . url('/resetPwd', ['c' => $key1, 'k' => $key2]);
        $body = "<b>" . $data['it_code'] . ',您好：</b></br></br></n>'
            . '&nbsp;&nbsp;感谢您使用门户平台！</br></br>'
            . '&nbsp;&nbsp;请<a href="' . $url . '">点击这里重置密码</a>。';

        $receiver = array($param);
　　　　　// 发送邮件方法自己写
        $res      = send_mail($receiver, '门户平台密码重置', $body);

        if ($res) {
            return info('邮件发送成功，请查收邮件', 1);
        } else {
            return info('邮件发送失败，请联系管理员', 0);
        }
    }

    /**
     * 验证链接有效性
     * @author [email protected] 
     * https://www.cnblogs.com/wxzxc
     */
    private function verifyUrl($param)
    {
        if (empty($param['c']) || empty($param['k'])) {
            return false;
        }
        $c = explode('+', base64_decode($param['c']));
        if (count($c) != 2) {
            return false;
        }
　　　　　// 用户数据不存在 页面失效
        $userData = model('user')->getRow(['email' => $c[0]], 'id,it_code,password');
        if (empty($userData)) {
            return false;
        }
　　　　　// 密码重置后 页面失效
        $key = md5($userData['id'] . $userData['it_code'] . $userData['password'] . $c[1] . config('user_auth_key'));
        if ($key != $param['k']) {
            return false;
        }
　　　　　// 时间过1800s 页面失效
        if ($c[1] + 1800 < time()) {
            return false;
        }
        return true;
    }