getHyperlink（） - ＆gt; getUrl（）不工作phpexcel

Question

我的代码：

$fileName = $_FILES['list']['tmp_name'];
$excelReader = PHPExcel_IOFactory::createReaderForFile($fileName);
$excelReader->setLoadAllSheets();
$excelObj = $excelReader->load($fileName);
$arr = array();
echo $excelObj->getActiveSheet()->getCell('B2')->getHyperlink()->getUrl();

如果单元格B2包含超链接。