Thinkphp3.2 PHPexcel 导出

private  function getExcel($fileName,$headArr,$data){
//导入PHPExcel类库，因为PHPExcel没有用命名空间，只能inport导入
import("Org.Util.PHPExcel");
import("Org.Util.PHPExcel.Writer.Excel5");
import("Org.Util.PHPExcel.IOFactory.php");

$date = date("Y_m_d",time());
$fileName .= "_{$date}.xls";

//创建PHPExcel对象，注意，不能少了\
$objPHPExcel = new \PHPExcel();
$objProps = $objPHPExcel->getProperties();

//设置表头
$key = ord("A");
//print_r($headArr);exit;
foreach($headArr as $v){
$colum = chr($key);
$objPHPExcel->setActiveSheetIndex(0) ->setCellValue($colum.'1', $v);

$objPHPExcel->setActiveSheetIndex(0) ->setCellValue($colum.'1', $v);
$key += 1;
}

$column = 2;
$objActSheet = $objPHPExcel->getActiveSheet();

//print_r($data);exit;
foreach($data as $key => $rows){ //行写入
$span = ord("A");
foreach($rows as $keyName=>$value){// 列写入
$j = chr($span);
$objActSheet->setCellValue($j.$column, $value);
$span++;
}
$column++;
}

$fileName = iconv("utf-8", "gb2312", $fileName);

//重命名表
//$objPHPExcel->getActiveSheet()->setTitle('test');
//设置活动单指数到第一个表,所以Excel打开这是第一个表
$objPHPExcel->setActiveSheetIndex(0);
ob_end_clean();//清除缓冲区,避免乱码
header('Content-Type: application/vnd.ms-excel');
header("Content-Disposition: attachment;filename=\"$fileName\"");
header('Cache-Control: max-age=0');

$objWriter = \PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');
$objWriter->save('php://output'); //文件通过浏览器下载
exit;
}

public function index(){
$user=M('table');
$data=$user->select();
foreach ($data as $key => $value) {
$data[$key][id]=$value['id'];
$data[$key][name]=$value['name'];
$data[$key][sex]=$value['sex'];
$data[$key][content]=$value['content'];
}
foreach ($data as $filed => $value) {
if($filed== 'id'){$headArr[]='序号';}
if($filed== 'name'){$headArr[]='名字';}
if($filed== 'sex'){$headArr[]='性别';}
if($filed== 'content'){$headArr[]='备注';}
}

$filename="测试";  //文件名字
$this->getExcel($filename,$headArr,$data);

}