Maatwebsite 3.1版本excel导出，对数据，样式进行处理，再此记录一下

下载laravel-excel,下载的是最新版本的，需要注意框架版本是否符合，框架版本低可以下载2.1

下载

composer require maatwebsite/excel

发布配置，会添加一个config/excel.php文件

php artisan vendor:publish --provider="Maatwebsite\Excel\ExcelServiceProvider" --tag=config

创建 App\Exports\UsersExport.php

<?php

namespace App\Exports;

use App\Models\User;//引入用户表models类
use App\Models\Motorcade;
use Dcat\Admin\Grid\Exporters\AbstractExporter;
use Illuminate\Support\Str;
use Maatwebsite\Excel\Concerns\Exportable;
use Maatwebsite\Excel\Concerns\FromCollection;
use Maatwebsite\Excel\Concerns\WithHeadings;
use Maatwebsite\Excel\Concerns\WithMapping;
use Maatwebsite\Excel\Concerns\WithColumnWidths;
use Maatwebsite\Excel\Concerns\WithPreCalculateFormulas;
use Maatwebsite\Excel\Concerns\WithEvents;
use Maatwebsite\Excel\Events\AfterSheet;
class UsersExport  extends AbstractExporter implements WithMapping, WithHeadings, FromCollection,WithColumnWidths,
WithPreCalculateFormulas,WithEvents
{
    use Exportable;
    protected $fileName = '司机数据表';//导出文件名
    protected $titles = [];//标题
     public function __construct()
    {
        $this->fileName = $this->fileName.'_'.Str::random(6).'.xlsx';//拼接下载文件名称
        $this->titles = ['id' => 'id','name'=>'司机名称', 'car_id' => '所属车队' ,'created_at'=>'创建时间','updated_at'=>'更新时间'];
        parent::__construct();
    }

     public function export()
    {
        // TODO: Implement export() method.
        $this->download($this->fileName)->prepare(request())->send();
        exit;
    }


    public function collection()
    {
        // TODO: Implement collection() method.

        return collect($this->buildData());
    }
  public function headings(): array
    {
        // TODO: Implement headings() method.
        return $this->titles();
    }
    //设置宽度
    public function columnWidths(): array
    {
    //设置行宽度
        return [
            'A' => 15,
            'B' => 35, 
            'C' => 35,
            'D' => 35,
            'E' => 35,
        ];
    }
   //自定义添加公式
     public function registerEvents(): array
    {
        return [
            AfterSheet::class => function(AfterSheet $event) {
                
                $rows_line = $event->sheet->getHighestRow();//获取当前总共有多少条数据
                $count = $rows_line+1;//获取最后一行
               
                $event->sheet->setCellValue("A$count","=SUM(A:A)");// 设置A列  最后一行的值，值为A列的总和
            }
        ];
    }

public function map($row): array
    {
    //可在里面对数据进行修改
        $car = Motorcade::where('id',$row['car_id'])->first();
        $row['car_id'] = $car['name'];//修改 $row['car_id']的值

        // TODO: Implement map() method.
        return [
            $row['id'],
            $row['name'],
            $row['car_id'],
            $row['created_at'],
            $row['updated_at'],
        ];
    }



}

在控制器中引入

use App\Exports\UsersExport;


$grid->export(new UsersExport());

导出来的数据