首先:在extend里面引入PHPexcel文件,直接根目录导入进去

html创建上传按钮

<form  class="layui-form" method="post" action="">



                        <div class="layui-form-item" >
                            <label class="layui-form-label">上传excel</label>
                            <div class="layui-input-inline">
                                <div class="layui-upload">
                                    <button type="button" name="myfile" class="layui-btn" id="myfile"><i class="layui-icon"></i>上传文件</button>
                                </div>
                            </div>
                        </div>

                        <div class="layui-form-item" style="padding-left: 35%;">
                            <div class="layui-input-inline"  >
                                <button class="layui-btn" lay-submit lay-filter="formsub">立即提交</button>
                                <button type="reset" class="layui-btn layui-btn-primary">重置</button>
                            </div>
                        </div>

                    </form>


<script type="text/javascript">
    layui.use(['form','upload'],function(){

        var form=layui.form;
        var upload=layui.upload;

        upload.render({ //允许上传的文件后缀
            elem: '#myfile'
            ,url: "{:url('sale/do_upload')}"
            ,accept: 'file' //普通文件
            ,exts: 'xls|excel|xlsx' //只允许上传压缩文件
            ,done: function(res){
                if(res.code==1){
                    layer.msg('上传成功,已解析数据',{icon:6});
                }else{
                    layer.msg('解析失败',{icon:5});
                }
            }
        });

        form.on('submit(formsub)',function(data){
            layer.msg('导入数据具体详情未协商确认,待确认后处理');
            return false;
        })
        

    })

</script>

在上传后的sale/do_upload中去进行解析上传的excel

public function do_upload(){



        //引入文件
        \think\Loader::import('PHPExcel.PHPExcel');
        $objPHPExcel = new \PHPExcel();

        //获取表单上传文件
        $file = request()->file('file');
        $info = $file->validate(['ext' => 'xlsx,xls'])->move(ROOT_PATH . 'public' . DS . 'uploads');

        //数据为空返回错误
        if(empty($info)){
            $output['status'] = false;
            $output['info'] = '导入数据失败~';
            $this->ajaxReturn($output);
        }

        //获取文件名
        $exclePath = $info->getSaveName();
        //上传文件的地址
        $filename = ROOT_PATH . 'public' . DS . 'uploads'.DS . $exclePath;


        $extension = strtolower( pathinfo($filename, PATHINFO_EXTENSION) );

        \think\Loader::import('PHPExcel.IOFactory.PHPExcel_IOFactory');
        if ($extension =='xlsx') {
            $objReader = new \PHPExcel_Reader_Excel2007();
            $objExcel = $objReader ->load($filename);

        } else if ($extension =='xls') {

            $objReader = new \PHPExcel_Reader_Excel5();
            $objExcel = $objReader->load($filename);


        }


        $excel_array=$objExcel->getsheet(0)->toArray();   //转换为数组格式
        array_shift($excel_array);  //删除第一个数组(标题);
        array_shift($excel_array);  //删除th

        $data=[];
        foreach ($excel_array as $k=>$v){
            $data[$k]["danhao"]=$v[0];//单号
            $data[$k]["type_name"]=$v[1];//类型名称
            $data[$k]["name"]=$v[2];
            $data[$k]["number"]=$v[3];
            $data[$k]["price"]=$v[4];
            $data[$k]["danwei"]=$v[0];
            $data[$k]["create_user"]=$v[5];
            $data[$k]["create_time"]=$v[6];
            $data[$k]["remark"]=$v[7];
        }

        $msg=[
            'code'=>1,
            'msg'=>'已获取信息',
        ];
        $msg['data']['src']=$filename;
        $msg['data']['data']=$data;

        return json_encode($msg);


    }