j_rfid_project/app/Exports/CommonExport.php

<?php

namespace App\Exports;


use Illuminate\Support\Collection;
use Illuminate\Support\Facades\Redis;
use Maatwebsite\Excel\Concerns\FromCollection;

use Maatwebsite\Excel\Concerns\WithEvents;     // 自动注册事件监听器
use Maatwebsite\Excel\Concerns\WithStrictNullComparison;    // 导出 0 原样显示，不为 null
use Maatwebsite\Excel\Events\AfterSheet;




class CommonExport implements FromCollection, WithEvents, WithStrictNullComparison
{

    public $data;

    /**
     * @return \Illuminate\Support\Collection
     */
    public function __construct($data)
    {
        $this->data = $data;
    }

    public function registerEvents(): array
    {
        //这边处理数据格式

        //关于表单的合并
        $params = $this->data['params'];

        $style = [
            AfterSheet::class => function (AfterSheet $event) use($params) {
                $count = count($this->data['data']);

                //设置区域单元格水平居中
                $event->sheet->getDelegate()->getStyle('A1:'.'BZ'.($count+1))->getAlignment()->setHorizontal(\PhpOffice\PhpSpreadsheet\Style\Alignment::HORIZONTAL_CENTER);


                //合并相关
                $merge = $params['merge'];
                $event->sheet->getDelegate()->setMergeCells($merge);
            },
        ];

        return $style;

    }


    //数组转集合
    public function collection()
    {
        return new Collection($this->createData());
    }
    //业务代码
    public function createData()
    {
        $data = $this->export();
        return $data;

    }

    private function export(){
//        var_dump($this->data);die;
        $data = $this->data['data'];
        $list = [];
        foreach ($data as $v){
            $list[] = $v;
        }
        return $list;
    }





}