导出的excel文件中显示 thinkphp 报错的页面

[qq_36718813]

public function exportExcels($expTitle,$expCellName,$expTableData){
$xlsTitle = iconv('utf-8', 'gb2312', $expTitle);//文件名称
$fileName = $expTitle.date('_YmdHis');//or $xlsTitle 文件名称可根据自己情况设定
$cellNum = count($expCellName);
$dataNum = count($expTableData);
vendor("PHPExcel.PHPExcel");
$objPHPExcel = new \PHPExcel();
$cellName = array('A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','AA','AB','AC','AD','AE','AF','AG','AH','AI','AJ','AK','AL','AM','AN','AO','AP','AQ','AR','AS','AT','AU','AV','AW','AX','AY','AZ');

$objPHPExcel->getActiveSheet(0)->mergeCells('A1:'.$cellName[$cellNum-1].'1');//合并单元格
$objPHPExcel->setActiveSheetIndex(0)->setCellValue('A1', $expTitle.' Export time:'.date('Y-m-d H:i:s'));
for($i=0;$i<$cellNum;$i++){
$objPHPExcel->setActiveSheetIndex(0)->setCellValue($cellName[$i].'2', $expCellName[$i][1]);
}
// Miscellaneous glyphs, UTF-8
for($i=0;$i<$dataNum;$i++){
for($j=0;$j<$cellNum;$j++){
$objPHPExcel->getActiveSheet(0)->setCellValue($cellName[$j].($i+3), $expTableData[$i][$expCellName[$j][0]]);
}
}
header('pragma:public');
header('Content-type:application/vnd.ms-excel;charset=utf-8;name="'.$xlsTitle.'.xls"');
header("Content-Disposition:attachment;filename=$fileName.xls");//attachment新窗口打印inline本窗口打印
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');
$objWriter->save('php://output');
exit;
}


public function excel_out(){
$xlsCell = array(
array('article_id', '文章ID'),
array('writer_id', '作者id'),
array('title', '文章名'),
);
$xlsName = 'icmcs2019';
$field = null;
foreach ($xlsCell as $key => $value) {
if($key == 0){
$field = $value[0];
}else{
$field .= "," . $value[0];
}
}
$xlsData = $this->article->Field($field)->order('article_id DESC')->select();
// p($xlsName); p($xlsCell); p($xlsData);die;
$a = $this->exportExcels($xlsName,$xlsCell,$xlsData);
}

[qq_36718813]