laravel框架excel扩展包maatwebsite-excel升级3.1版本兼容处理_call to undefined method maatwebsite\excel\excel::-CSD

单Sheet导入

旧的写法使用新的扩展包导入会报错 Call to undefined method Maatwebsite\Excel\Facades\Excel::load() ,解决方法
	$file = $request->file('exfile');
    Excel::load($file, function($reader) use ($data){
        $reader = $reader->getSheet(0); //获取excel的第1张表
        $results = $reader->toArray();  //获取表中的数据
        ......
    });
	$file = $request->file('exfile');
    $import = new Import();
    $path = storage_path('app').'/'.$file->store('temp');
    Excel::import($import, $path);
    $results = $import->data->toArray();
    ......
 Import.php代码如下，根据实际命名空间调整： 
namespace App;
use Illuminate\Support\Collection;
use Maatwebsite\Excel\Concerns\ToCollection;
 * Class Import
 * @package App
class Import implements ToCollection
    public $data;
    public function __construct()
     * @param Collection $rows
    public function collection(Collection $rows)
        $this->data = $rows;
注意：上面的写法只能读取到最后的Sheet,如果有空的Sheet请删除，只保留一个工作Sheet，不然会影响读取结果。 
多Sheet导入
 
创建一个继承多sheet类MultipleImport.php，如果已存在则不需要创建，同样用到上面的Import.php，MultipleImport.php代码内容如下 
namespace App;
use Maatwebsite\Excel\Concerns\WithMultipleSheets;
class MultipleImport implements WithMultipleSheets
    public $sheet;
    public $sheetCount;
     * UserImport constructor.
     * @param int $sheetCount sheet数量
    public function __construct($sheetCount)
        $this->sheetCount = $sheetCount;
    public function sheets(): array
        for ($i = 0; $i < $this->sheetCount; $i++) {
            $this->sheet[$i] = new Import();
        return $this->sheet;
在控制器中使用： 
$file = $request->file('exfile');
$import = new MultipleImport(3);
Excel::import($import, $file->getRealPath());
$results = $import->sheet[0]->data->toArray();
$results2 = $import->sheet[1]->data->toArray();
$results3 = $import->sheet[2]->data->toArray();
dd($results,$results2,$results3);
导出excel
 
创建文件Export.php 
namespace App;
use Illuminate\Support\Collection;
use Maatwebsite\Excel\Concerns\FromCollection;
use Maatwebsite\Excel\Concerns\WithEvents;
use Maatwebsite\Excel\Concerns\WithHeadings;
use Maatwebsite\Excel\Events\AfterSheet;
use PhpOffice\PhpSpreadsheet\Style\Border;
class Export implements FromCollection,WithHeadings, WithEvents
    protected $data;
    protected $headings;
    protected $columnWidth = [];//设置列宽       key：列  value:宽
    protected $rowHeight = [];  //设置行高       key：行  value:高
    protected $mergeCells = []; //合并单元格    value:A1:K8
    protected $font = [];       //设置字体       key：A1:K8  value:Arial
    protected $fontSize = [];       //设置字体大小       key：A1:K8  value:11
    protected $bold = [];       //设置粗体       key：A1:K8  value:true
    protected $background = []; //设置背景颜色    key：A1:K8  value:#F0F0F0F
    protected $vertical = [];   //设置定位       key：A1:K8  value:center
    protected $sheetName; //sheet title
    protected $borders = []; //设置边框颜色  key：A1:K8  value:#000000
    //设置页面属性时如果无效   更改excel格式尝试即可
    //构造函数传值
    public function __construct($data, $headings,$sheetName)
        $this->data = $data;
        $this->headings = $headings;
        $this->sheetName = $sheetName;
        $this->createData();
    public function headings(): array
        return $this->headings;
    //数组转集合
    public function collection()
        return new Collection($this->data);
    //业务代码
    public function createData()
        $this->data = collect($this->data)->toArray();
     * @return array
     *    'B' => 40,
     *    'C' => 60
    public function setColumnWidth (array $columnwidth)
        $this->columnWidth = array_change_key_case($columnwidth, CASE_UPPER);
     * @return array
     *    1 => 40,
     *    2 => 60
    public function setRowHeight (array $rowHeight)
        $this->rowHeight = $rowHeight;
     * @return array
     *    A1:K7 => '宋体'
    public function setFont (array $font)
        $this->font = array_change_key_case($font, CASE_UPPER);
     * @return array
     * @2020/3/22 10:33
     *    A1:K7 => true
    public function setBold (array $bold)
        $this->bold = array_change_key_case($bold, CASE_UPPER);
     * @return array
     * @2020/3/22 10:33
     *    A1:K7 => F0FF0F
    public function setBackground (array $background)
        $this->background = array_change_key_case($background, CASE_UPPER);
     * @return array
     *    A1:K7
    public function setMergeCells (array $mergeCells)
        $this->mergeCells = array_change_key_case($mergeCells, CASE_UPPER);
     * @return array
     *    A1:K7 => 14
    public function setFontSize (array $fontSize)
        $this->fontSize = array_change_key_case($fontSize, CASE_UPPER);
     * @return array
     *    A1:K7 => #000000
    public function setBorders (array $borders)
        $this->borders = array_change_key_case($borders, CASE_UPPER);
在控制器中调用导出下载： 
use App\Export;
use Maatwebsite\Excel\Facades\Excel as LaravelExcel;
$data = [];//导出数据
$head = [];//第一行的列标题
$filename = 'excel';//导出文件名，中文好像有乱码
$excel = new Export($data, $head , 'Sheet1');
return LaravelExcel::download($excel, $filename . date('Y-m-d') . '.xls');
注意：download方法只能在控制器中使用
				今天项目需要提取excel的内容，composer require maatwebsite/excel；
下边开始代码部分
public function readFile(\Maatwebsite\Excel\Excel $excel)
	   	$excel_file_path = storage_path('zip/weather_forecast/weather_forecast/Ch...
$filePath = 'xxx.xlsx'; 
//$filePath 根据 config/filesystems.php文件中配置找到文件
Excel::import($import,$filePath,null,\Maatwebsite\Excel\Excel::XLSX);
XXImport
<?php
namespace App\Imports;
         private static $host="localhost";
         private static $user="root";
         private static $password="123456";
         private static $dbName=
//showPage(页号，总页数，分隔符)
function showPage($page,$totalPage,$sep=" "){
    $url = $_SERVER ['PHP_SELF'];           //获取当前路径
    $index = ($page == 1) ? "首页" : "首页";
    $last
个人博客：https://jian1098.github.io
CSDN博客：https://blog.csdn.net/c_jian
简书：https://www.jianshu.com/u/8ba9ac5706b6
联系方式：jian1098@qq.com
1.安装方式
thinkphp6只能通过composer安装
composer config -g repo.packagist composer https://mirrors.aliyun.com/composer		# 设.
				你可以在以下网站中下载jsp-api.jar 3.1版本：
1. Maven仓库：https://mvnrepository.com/artifact/javax.servlet.jsp/jsp-api/2.3.3
2. Jar下载网站：http://www.java2s.com/Code/Jar/j/Downloadjspapi313jar.htm
请注意，这个版本的jsp-api.jar适用于Servlet API 3.1。如果你使用的是其他版本的Servlet API，请下载相应版本的jsp-api.jar。