tp phpexcel 导入后台访问方法

 public function addall(){
        $Water = M('Waterrate');

        $config = array(
                        'maxSize' => 0,
                        'rootPath' => 'Public',
                        'savePath' => '/Home/excel/',
                        'saveName' => array('uniqid',''),
                        'exts' => array('xlsx','xls'),                    '
                        autoSub' => false,
                        'subName' => ''
                    );
                $upload = new \Think\Upload($config);
                $excel = $upload->upload();
                $xls = $excel['excel']['savename'];
                $uploadfile = "Public/Home/excel/".$xls;

                vendor('phpexcel.Classes.PHPExcel');   //导入thinkphp第三方类库
                vendor('phpexcel.Classes.PHPExcel.IOFactory');   //导入thinkphp第三方类库
                if($excel[0]['extension'] == 'xlsx'){
                    $objReader = PHPExcel_IOFactory::createReader('Excel2007');//use excel2007 for 2007 format
                }else if($excel[0]['extension'] == 'xls'){
                    $objReader = PHPExcel_IOFactory::createReader('Excel5');//use excel2007 for 2007 format
                }
                $objReader = \PHPExcel_IOFactory::createReader('Excel5');//use excel2007 for 2007 format
                $objPHPExcel = $objReader->load($uploadfile);
                $sheet = $objPHPExcel->getSheet(0);
                $highestRow = $sheet->getHighestRow(); // 取得总行数
                $highestColumn = $sheet->getHighestColumn(); // 取得总列数

               //循环读取excel文件,读取一条,插入一条
                for($j=1;$j<=$highestRow;$j++)
                {
                    for($k='A';$k<=$highestColumn;$k++)
                    {
                        $str .= iconv('utf-8','gbk',$objPHPExcel->getActiveSheet()->getCell("$k$j")->getValue()).'\\';//读取单元格
                    }
                    //explode:函数把字符串分割为数组。
                    $strs = explode("\\",$str);
                    // $sql = "INSERT INTO tab_zgjx_award (jx_name,jx_degree,jx_item_name,jx_unit,dy_originator,de_originator,xm_intro,hj_item_id) VALUES('".
                    // $strs[0]."','". //奖项名称
                    // $strs[1]."','". //奖项届次
                    // $strs[2]."','". //获奖项目名
                    // $strs[3]."','". //获奖单位
                    // $strs[4]."','". //第一发明人
                    // $strs[5]."','". //第二发明人
                    // $strs[6]."','". //项目简介
                    // $strs[7]."')"; //获奖项目编号
                    
                    $data['name'] = $strs[0]; //奖项名称
                    $data['waterrate'] = $strs[1]; //奖项届次

                    $res = $Water->add($data);

                    $str = "";
                }

                    // unlink($uploadfile); //删除上传的excel文件,导入成功


                if($res){
                    $this->success('提交成功');
                }else{
                    $this->error("提交失败");
                }
    }