tihuo/addons/pickup/controller/Index.php

<?php

namespace addons\pickup\controller;

use app\common\controller\Api;
use think\Config;
use think\Validate;
use think\Db;
use app\common\library\Sms as Smslib;
use Endroid\QrCode\QrCode;

//use think\addons\Controller;
use think\Response;

/**
 * 微信接口
 */
//class Index extends Api{
class Index extends \think\addons\Controller {

    public function _initialize() {
        parent::_initialize();
    }

    /**
     *插件首页
     */
    public function index() {
        return $this->view->fetch();
    }

//生成二维码
     public function qrcode() {

        $config = get_addon_config('qrcode');
        $text = $this->request->get('text', request()->domain().'/addons/pickup#/pages/index/index');
        $size = intval($this->request->get('size', 250));
        $padding = $this->request->get('padding', 5);
        $errorcorrection = $this->request->get('errorcorrection', 'medium');
        $foreground = $this->request->get('foreground', "#000000");
        $background = $this->request->get('background', "#ffffff");

        $params = [
            'text' => $text,
            'size' => $size,
            'padding' => $padding,
            'errorlevel' => $errorcorrection,
            'foreground' => $foreground,
            'background' => $background,
            'format' => 'png',
        ];
        $qrCode = \addons\pickup\library\Service::qrcode($params);

        //也可以直接使用render方法输出结果

        $mimetype='image/png';
        $response = Response::create()->header("Content-Type", $mimetype);

        // 直接显示二维码
        header('Content-Type: ' . $qrCode->getContentType());
        $response->content($qrCode->writeString());

        return $response;
    }

}