laravel-admin 自定义导出excel功能，并导出图片

use MaatwebsiteExcelFacadesExcel;

use PHPExcel_Worksheet_Drawing;

具体代码如下： 
<?php
    /**
     * Created by PhpStorm.
     * User: yuran
     * Date: 2018/10/13
     * Time: 10:04
     */
    namespace App\Admin\Extensions;
    use Encore\Admin\Grid\Exporters\AbstractExporter;
    use Maatwebsite\Excel\Facades\Excel;
    use PHPExcel_Worksheet_Drawing;

    class ExcelExpoter extends AbstractExporter
    {
        protected $head = [];
        protected $body = [];
        public function setAttr($head, $body){
            $this->head = $head;
            $this->body = $body;
        }

        public function export()
        {
            //定义文件名称为日期拼上uniqid()
            $fileName = date(‘YmdHis‘) . ‘-‘ . uniqid();

            Excel::create($fileName, function($excel) {
                $excel->sheet(‘sheet1‘, function($sheet) {
                    // 这段逻辑是从表格数据中取出需要导出的字段
                    $head = $this->head;
                    $body = $this->body;
                    //init列
                    $title_array = [‘A‘, ‘B‘, ‘C‘, ‘D‘, ‘E‘, ‘F‘, ‘G‘, ‘H‘, ‘I‘, ‘J‘, ‘K‘, ‘L‘, ‘M‘, ‘N‘, ‘O‘, ‘P‘, ‘Q‘,
                        ‘R‘, ‘S‘, ‘T‘, ‘U‘, ‘V‘, ‘W‘, ‘X‘, ‘Y‘, ‘Z‘, ‘AA‘, ‘AB‘, ‘AC‘, ‘AD‘, ‘AE‘, ‘AF‘, ‘AG‘, ‘AH‘];

                    $rows = collect([$head]); //写入标题
                    $sheet->rows($rows);
                    collect( $this->getData() )->map( function ($item,$k)use($body,$sheet,$title_array ) {
                        foreach ($body as $i=>$keyName){
                            if($keyName == ‘url‘) { //判断图片列，如果是则放图片
                                $objDrawing = new PHPExcel_Worksheet_Drawing;
                                $v = public_path(‘/upload/‘). array_get($item, $keyName); //拼接图片地址
                                $objDrawing->setPath( $v );
                                $sp = $title_array[$i];
                                $objDrawing->setCoordinates( $sp . ($k+2) );
                                $sheet->setHeight($k+2, 65); //设置高度
                                $sheet->setWidth(array( $sp =>12));  //设置宽度
                                $objDrawing->setHeight(80);
                                $objDrawing->setOffsetX(1);
                                $objDrawing->setRotation(1);
                                $objDrawing->setWorksheet($sheet);
                            } else { //否则放置文字数据
                                $v = array_get($item, $keyName);
                                $sheet->cell($title_array[$i] . ($k+2), function ($cell) use ($v) {
                                    $cell->setValue($v);
                                });
                            }
                        }
                    });
                });
            })->export(‘xls‘);
        }

    }

 $excel = new ExcelExpoter();
        $excel->setAttr([‘id‘, ‘名称‘, ‘类型‘, ‘二维码‘, ‘上传人‘], [‘id‘, ‘name‘, ‘type‘, ‘url‘, ‘admin‘]);
        $grid->exporter($excel);