Laravel Excel3.0導出的方法

這篇文章主要介紹了Laravel Excel3.0導出的方法，具有一定借鑒價值，需要的朋友可以參考下。希望大家閱讀完這篇文章后大有收獲。下面讓小編帶著大家一起了解一下。

導出方法抽離：

<?php
namespace App\Exports;
use Maatwebsite\Excel\Concerns\FromCollection;
use Maatwebsite\Excel\Concerns\ShouldAutoSize;
use Maatwebsite\Excel\Concerns\WithColumnFormatting;
use Maatwebsite\Excel\Concerns\WithCustomValueBinder;
use Maatwebsite\Excel\Concerns\WithEvents;
use Maatwebsite\Excel\Concerns\WithStrictNullComparison;
use Maatwebsite\Excel\Events\AfterSheet;
use PhpOffice\PhpSpreadsheet\Cell\StringValueBinder;
use PhpOffice\PhpSpreadsheet\Style\NumberFormat;

class Export extends StringValueBinder implements FromCollection,
    ShouldAutoSize,WithColumnFormatting,WithCustomValueBinder,WithStrictNullComparison,WithEvents
{
    private $row;
    private $data;
    private $mergeCell;
    private $columnName;
    private $formatNumber;

    /*
     * $mergeCell $columnName ：合并單元格所需參數;
     * $mergeCell 需要合并的位置數組以MAP形式存儲 [開始行=>結束行]
     * $columnName 需要合并列 與合并行數結合使用ARRAY存儲 ['A','B']
     */
    public function __construct($row,$data,$mergeCell=null,$columnName=null,$formatNumber=[])
    {
        $this->row = $row;
        $this->data = $data;
        $this->mergeCell = $mergeCell;
        $this->columnName = $columnName;
        $this->formatNumber = $formatNumber;
    }

    public function collection()
    {
        $row = $this->row;
        $data = $this->data;

//設置表頭
        foreach ($row[0] as $key => $value) {
            $key_arr[] = $key;
        }

//輸入數據
        foreach ($data as $key => &$value) {
            $js = [];
            for ($i=0; $i < count($key_arr); $i++) {
                $js = array_merge($js,[ $key_arr[$i] => $value[ $key_arr[$i] ] ]);
            }
            array_push($row, $js);
            unset($val);
        }
        return collect($row);
    }
    public function registerEvents(): array
    {
        // TODO: Implement registerEvents() method.
        if ($this->mergeCell && $this->columnName){
            return [
                AfterSheet::class => function(AfterSheet $event){
                    foreach ($this->columnName as $column){
                        foreach ($this->mergeCell as $key=>$value){
                            $event->sheet->getDelegate()->mergeCells($column.$key.':'.$column.$value);
                        }
                    }
                }
            ];
        }
        return [];
    }

    public function columnFormats(): array{
        $formatNumber = [];
        foreach ($this->formatNumber as $column){
            $formatNumber[$column] = NumberFormat::FORMAT_TEXT;
        }
        return $formatNumber;
    }
}

使用：

/*表頭表體都為二維數組*/
$row=[['row1'=>'列1','row2'=>'列2']];
/*與表頭key對應，缺少數據報錯*/
$list=[['row1'=>'行1列1'，'row2'=>'行1列2'],['row1'=>'行2列1'，'row2'=>'行2列2']];
/*將第一行到第三行，第五行到第七行的A,B,C列各自合并*/
$mergeCell=[1=>3,5=>7];
$columnName=["A","B","C"];
/*數字過長的列轉換格式防止科學計數*/
$formatNumber=['A','B','C'];
//上方A,B,C列都為示意，根據自己需求調整，對應EXCEL的列
return Excel::download(new Export($row,$list,$mergeCell,$columnName，$formatNumber),'fileName');

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