laravel实现excel表的导入导出功能

namespace App\Http\Controllers;
use App\Http\Controllers\Admin\ContentTypes\File;
use App\Models\Win1;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Input;
use Illuminate\Support\Facades\Schema;
use Illuminate\Support\Facades\Storage;
use Maatwebsite\Excel\Facades\Excel;
use Illuminate\Routing\Controller;
use Symfony\Component\CssSelector\Parser\Reader;

 public function index(Excel $excel){
     //将数据库中的信息转化为excel文件内容
    $data=Win1::with(‘hasManyWindow‘)->get();
   foreach ($data as $key){
     $export[]=array(
         ‘id‘=>$key[‘id‘],
         ‘window‘=>$key[‘window‘],
//         数据表中的两个字段
     );
   }
   $table_name=‘窗口名称‘;

$excel::create($table_name,function ($excel)use($export){
    $excel->sheet(‘Sheet1‘,function ($sheet)use($export){
       $sheet->fromArray($export);
    });
})->store(‘xlsx‘)->export(‘xlsx‘);


    }

public function excelfile(Request $request)
{
    //1.思路get传输过来的Excel文件地址
    //2.循环读取数据保存到数组
    //3.循环数组保存到数据库中

$flag=true;
$file=$request->file(‘file‘);

if($file){
//得到文件的路径
    $realPath = $file->getRealPath();
    //上传文件的后缀.
    $entension =  $file -> getClientOriginalExtension();
//  获取上传的文件缓存在tmp文件夹下的绝对路径
$newpath=$file->getRealPath();
    $tabl_name = date(‘YmdHis‘).mt_rand(100,999);//时间戳
if($flag==true){
    Excel::load($realPath,function ($reader) use ($tabl_name){
        //获取excel的第几张表
        $reader = $reader->getSheet(0);
        //获取表中的数据
        $data = $reader->toArray();
        for($row=0;$row<count($data);$row++){
            //echo $data[$row][‘0‘].‘&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;‘;
            DB::table(‘windowmessage‘)->insert([‘id‘=>$data[$row][‘0‘],‘window‘=>$data[$row][‘1‘]]);
        }

    });
    return ‘<script>alert("文件上传成功");window.location.href="importexcel"</script>‘;
}

}else{
    return ‘<script>alert("文件为空上传失败！请重新上传");window.location.href="importexcel"</script>‘;
}


}

  <a href="{{url(‘excelExport‘)}}" id="href"><div   id="btn" >下载Excel</div></a>

{{--导入按钮--}}

        <form style="display:none" action="{{url(‘excelfile‘)}}" method="post" enctype="multipart/form-data">
            {{csrf_field()}}
            　　<input type="file" name="file" value="">

        </form>
        <input type="submit" value="批量导入" id="tijiao" >

        <!--  记得载入jquery文件 -->

        <script>
            $(‘#tijiao‘).click(function(){
                $(this).prev(‘form‘).find(‘[name="file"]‘).trigger(‘click‘);
            });

            // 当表单文件有变化时执行提交动作

            $(‘[name="file"]‘).change(function(){
                if($(this).val()){
                    $(‘#tijiao‘).addClass(‘disabled‘ );
                    $(this).parent().submit();
                }
            });
        </script>