thinkphp5中引入第三方扩展的方法extend

玩的还是phpexcel
目录里面的文件夹是
使用方法
1 控制器顶部加入
use think\Loader;
2 控制器的函数里面
Loader::import("phpexcel.PHPExcel");
整个文件代码
<?php

namespace app\admin\controller;

// use app\think\Controller;
use app\common\controller\Backend;
use app\admin\model\SecurityCode as SecurityCodeModel;
use think\Request;
use think\Loader;
 

class SecurityCode extends Backend
{
     

    //导出
    public function Output()
    {
        $cc = new SecurityCodeModel();
        $info = $cc->order('id')->select();

        $data=array();   
        foreach($info as $k=>$v) {
            $data[$k]['id']=$v['id'];
            $data[$k]['serial_number']=$v['serial_number'];
            // $data[$k]['code1']=$v['code1'];
            // $data[$k]['code2']=$v['code2'];
            // $data[$k]['is_active']=$v['is_active'];
            // $data[$k]['product_code']=$v['product_code'];
            // $data[$k]['line']=$v['line'];
            // $data[$k]['xuhao']=$v['xuhao'];
            $data[$k]['batch']=$v['batch'];
        }
         
        $filename='序列号';
        $field = array(
            'A' => array('id', '序号'),
            'B' => array('serial_number', '序列号'),
            'C' => array('batch', '批次'),
        );
        //$this->downloadExcel($data,$title,$filename);
        $this->phpExcelList($field,$data,$filename);
            
         
    }
    
    /**
     * 直接导出需要生产的内容
     * @param $field
     * @param $list
     * @param string $title
     * @throws \PHPExcel_Exception
     * @throws \PHPExcel_Writer_Exception
     */
    public function phpExcelList($field, $list, $filename='文件')
    {
        //vendor("PHPExcel.PHPExcel");
        Loader::import("phpexcel.PHPExcel");//引入phpexcel文件夹下的PHPExcel
        $objPHPExcel = new \PHPExcel();
        $objWriter = new \PHPExcel_Writer_Excel5($objPHPExcel); //设置保存版本格式
        foreach ($list as $key => $value) {
            foreach ($field as $k => $v) {
                if ($key == 0) {
                    $objPHPExcel->getActiveSheet()->setCellValue($k . '1', $v[1]);
                }
                $i = $key + 2; //表格是从2开始的
                $objPHPExcel->getActiveSheet()->setCellValue($k . $i, $value[$v[0]]);
            }
        }
        header("Pragma: public");
        header("Expires: 0");
        header("Cache-Control:must-revalidate, post-check=0, pre-check=0");
        header("Content-Type:application/force-download");
        header("Content-Type:application/vnd.ms-execl");
        header("Content-Type:application/octet-stream");
        header("Content-Type:application/download");;
        header('Content-Disposition:attachment;filename='.$filename.'.xls');
        header("Content-Transfer-Encoding:binary");
        $objWriter->save('php://output');
    }
    
   
   
}
thinkphp5中引入第三方扩展的方法extend

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